For training purposes, I think consistency is more important than accuracy. Even if it wasn't possible to adjust the 6% offset, it's good to know that it's consistent.
This is honestly a piece of kit for those like myself who aren't athletes, aren't aspiring to be athletes, and just want something to track overall fitness. I'd been looking at getting a power meter since before I bought my current Roubaix Comp and now I have an option that integrates seamlessly into my Rival AXS groupset, right on! And the fact that it works as well as something definitely much more expensive makes me smile. I can't wait to buy one for my bike and really begin to track my progress on my fitness rides. Thanks for sharing Shane!
Hey Shane, have you had an answer yet fro Sram ......only joking! You have the patience of a saint sometimes mate. That question must have been asked more than 50 times in the comments and you didn’t lose your rag once. Well played sir.
@@jamesguirguis2435 thanks mate! I'm not familiar with SRAM yet but I'm waiting on a new bike with SRAM and thinking to upgrade to the power meter eventually
My LBS just hit me up to let me know they're (finally) getting these in soon. Got my order in so it'll go onto my Tarmac SL7 Comp. Can't wait to run some comparison tests and put the DCR Analyzer to work to see if I also have the 6% offset.
I can't wait to get a pair of said mystery box. The initial data I've been hearing from around the traps....day 1 purchase for sure....shame you can't discuss further on said mystery box (darn trade embargo) would be easy advertising for them.
I just got one, I ust got a new bike with Sram Rival and the crankset that came with it was the wrong cranklength and not the gearing I wanted. The Crankset was €122 without Powermeter and €270 with, that's not even €150 difference that's a lot less than any other Powermeter! It's even less than the 4iiii Precision 3 I have on my last bike. From my first test, it's within 10 watts of the 4iiii, so for me that's good enough especially because I don't really do powertraining, I just like it for not going to hard on long climbs.
Thanks Shane for this review very helpful, I have been looking for a budget power meter for a while and have now ordered this one and its out of stock until May 2022.
Awesome review! Was waiting for real numbers on this before I go out and buy it. But I still have a view doubts about the compatability. I have a force crankset and think about just getting the rival upgrade kit. But it would be interesting if the asymmetric stiffness and weight actually have an influence on performance, as well as on power readings. Even though its the non drive side, i could imagine the stiffness difference has an effect on your right and left side power distribution. I would really be interested in a short test of a asymmetric setup and if the power reading still makes sense or if it's thrown off by an offset or just gibberish...
Something I learned the extremely hard way is not to compare two power meters due to the variability. You give a great example of this with the KICKR versus the SRAM. There are too many variables.
We have five sources of power in our household that agree almost perfectly. And I know this because I have compared them. And we have had 3 sources of power that don't agree, and I know this because I compared them. Two of the sources that don't agree are smart trainers so we simply use our bike power meters as the power source. The other source has the battery removed as it's junk. It's false that no two power meters can be compared. That's only true for bad ones, not good ones!
@@johntobin1383 You kinda made my point. In my case I had a power meter on a wheel versus a crank. They never matched and shouldn't. A power meter on a trainer and a crank based meter shouldn't either. But they should be consistent.
Hello! There's a new update: New Firmware Available (Version 1.1.16) Release Notes Improve power accuracy in certain rare edge cases. Maybe they fixed the 6%?
I am a great fan of that channel specifically, and more other channels like this , but I can’t understand why to use the term “inaccuracies” for those wattage differences ? It is a “bias” , and bias can easily be fixed or compensated(like you did). “Inaccurate readings” is a phrase that should be related to noisy reading with some big standard deviations around the bias or some drifts (bias that changes with time for some reasons).
After seeing this video I tried it for myself and 6% offset is correct. Did the test vs my kickr today, the latest quarq firmware installed on the quarq dub. Thanks GPLama! 👍🏻
Which do you have? 1x, 2x, 2x wide? And I seem to be too stupid but how do you apply the upscale or is it just after the ride when you analyze the data?
Hi Shane, great video as always. Had a quick look though the comments, but couldnt find if SRAM got back to you about the 6% scaling. Is this still required or have they released a firmware upgrade or explanation. Thanks Chirs
Fascinating.... I have a 4iiii single sided shimano 105 that I suspect is under reporting. Might dig into my own experiments now I have a Kickr as a reference system. I guess I could record a zwift session with the 4iiii as the power source but then have my phone record an indoor cycling session for the Kickr. At least I'll have a better idea what is happening with my outdoors numbers. I love home science experiments :D
My Quarq Dzero was reading 6% lower than everything I compared it to ;) It was one of the early ones (2017). Static calibration was fixing it by +4% and I bumped it another 2% by doing long term dynamic comparisons with other power sources. Only after that my power data started to make sense. That's why I think every power meter should have an option to fine tune the calibration if someone have good comparison data to correct it.
Had a similar issue with my 2018 Quarq Dzero it is overreading 5-6% in stock configuration, but apart from that it's doing a good job. Just aligned it to my KickR Core
@@Freddy3792 How do you know it's overreading? If it's just by comparison to the Core that doesn't tell you anything. Have you done a static calibration or compared to any other known power devices? It sounds like the poster above had an inaccurate Quarq and I'm sure every brand has some bad units, but they have a good reputation and the 3 Quarqs we've had at various times have all agreed with one another. I'd trust the Quarq before I trusted the Core.
@@johntobin1383 I have compared it to multiple powermeters in- and outdoors. I have Assiomas, the Kickr and a 4iiii. So I could compare the Kickr to multiple powermeters. I also have a lot of friends who have a similar weight to me with powermeters and we have a lot of climbs here. The quarq consistently overread.
I have two Rival PM spindles: one reads extremely low (to the tune of 6%) and the other is pretty darn good at factory slope. I'm curious what your slope values looked like before and after the 6% correction. SRAM meters are all over the place as I've also had a Force AXS Quarq spider that read almost 10% lower than a KICKR... so like actually 12% low because of drivetrain loss.
I appreciate your video! A point that I am missing: What is your experience regarding "Manual Zero required". According to SRAM it should be done prior to EVERY ride. Isn't this a bummer? Actually, I dont understand why this should be done repeatedly. I guess what you show here tell us this is not necessary, however, a precise initial calibration has to be done instead?
You'll find most meters that don't have auto-cal will advise a manual zero before every ride. It shouldn't be necessary for every ride if the conditions are the same as the previous manual zero. If being confident with the accuracy without calibration or faff like this is a requirement, this isn't the power meter to use.
@@gplama for sure. Just adding another data point as it seems that it's been low in all reviews that actually compare it to something. But if nothing else I hope that adjusting this may help me get comparable numbers on the road that I'm used to from Zwift.
Hi Shane, I found this video as I just bought a bike with this power meter installed. From my previous riding I have Assioma Duos. Would you say it is reasonable/good idea to keep them or that this is sufficient and I can sell them?
I have the Rival AXS setup. Why is the upgrade kit sold with the whole left crank and spindle instead of the power meter alone? Can’t the power meter be mated to any existing Rival crank arms?
The power meter is in the spindle that's attached to the left crank arm, so they're sold as a single left arm + spindle. It can be used with an exiting rival right crank arm/spider.
I know it’s too early to know why the 6% difference is there but for those without access to a second single power source do you think I would be accurate enough to do left leg drills on the kickr to determine if we need to adjust the scaling ?
Even without adjusting 6% the only really important thing is that it's measuring consistently which it was. You could just have an FTP equivalent on each meter.
True, but adjusting your FTP based on the equipment used isn't an ideal scenario. If a meter is consistent then it should be made to be consistently accurate.
@@gplama you wouldn't need to adjust your FTP as in have 2 FTP tests, you could just know that your adjusted FTP on one of the meters is x and it's y on the other. Ultimately it makes no difference as long as it's consistent. One thing I think would be great for you to highlight in videos is that these findings are only accurate and true to the specific meters you're testing. Favor Assioma pedals and Wahoo Kickrs and SRAM Rival power meters are not all going to be consistent to their cousins from the same brand and build.
Absolute perfect timing, getting one of these this coming week. Do you know if you can split the v3's to uno the same you did with the assiomas? I'd like to perform the same testing when I get mine next week, but have v3's not the assiomas.
Hi there!! Hope you’re doing great!! I’m having issues with my power meter. I bought a second hand bike which came with this quarq. My wahoo element finds it and paired with it but is not showing any data. I changed the battery (just in case) but still. Is not showing anything 😢 Any advice? Thanks a lot!
@GPLama - I have been running this PM along with my pair of Assioma Duo's .... I have cranked the slope now all the way to +9 and my last steady state ride it was still reading like 7% under the Assioma's , last I checked my left / right balance was pretty much 50/50. Any suggestions or should I just keep cranking up the slope setting until I get it closer?
Split the DUO into UNO so you're comparing apples to apples (Single left power with single left power). Then perform a number of tests at different power zones. Review this data to see if there's an average difference.
Hi just want to ask which one is compatible with the Giant Advanced Revolt 1 2022 Sram Rival etap AXS 1x, is the Road DUB BBS or the Road Wide DUB version of the power meter?
I have been waiting on this review as I have been closing in on pulling the trigger on the rival groupset...when/if it's available. OK, now to the one question I have based on the review, and I know you are still waiting on more information on them. But since you were able to make that six percent adjustment in the app, is it accurate to assume that whatever the issue is, it will be correctable through a firmware update? Great review, now if we could actually get them...that would be awesome.
@@gplama cheers mate appreciate the reply, can't seem to find any in stock anywhere anyway so might have to try something else for the gravel bike anyway!
I'm a bit surprised that both you and DCrainmaker had major issues with the accuracy of this crank based powermeter and neither of you has followed up on it. This is still a current device and I would assume many 1000's sold. I don't tend to read any other reviewers about tech stuff like this as you two really dig deep when testing stuff and I trust your advice. But this product seems to have slipped through the net. Your massive testing of Shimano power meters to get to the bottom of those issues shows what lengths you went to, why hasn't Sram faced the same scrutiny? It's very hard for average users to do comparison testing as we don't have multiple head units and power meters. So coming up with a number like 6% that we should adjust the offset to isn't easy.
I didn’t have any follow up from SRAM. I’ve also recently installed this again, updated the firmware, and am retesting. Mentioned in my recent Assioma PRO MX video. Shimano meters aren’t a good comparison here. This is a single sided low spec meter that isn’t used in the pro peloton. They use Quarq spiders. Of which I’ve done a LOT of content. Anyhow… this is low demand and low view content. If you’re asking me to follow up and retest for your own interests, maybe there was a better way to phrase it.
@@gplama Sorry, I didn't mean to criticise, I'm just puzzled. I was surprised that something that I thought would have interested a lot of people didn't seem to get follow up. I trust the reviews that both you and DC do and the time you spend testing stuff, which is why this review, where both of you found issues but seemed generally happy caused my frustration. Given the low cost I would have expected this to have been one of the most popular options for getting power data. If you are not getting any demand or views for it then I'm obviously wrong. I wasn't expecting you to re-test for my benefit. I just don't know where else to go (or trust) to find out if there is an ongoing issue with this or if both of you just had faulty units to test, hence my frustration.
Thanks for the follow-up. I've had a few things thrown my way in the last 24hrs that have rattled me a little in this space. Back on track - Ultimately it's up to SRAM (and every other company) to not only produce products but also build trust with consumers in their products. Ideally their marketing wouldn't simply be the technical specs and influencers 'using' the product, but almost copying what both DCR and I do - actually testing the product, or at the very least, giving insight into their own internal testing/validation/certification processes. I do have a pretty good line of communication with SRAM, but they never responded to this specific query/review. I'll keep collecting data from this meter and the PRO MX-1 (single sided pedal meter) and see how things line up.
Hi Shane! Does every quarq gauge in the spindle (I'm considering buying an MTB X0 crankset) has as big reading difference (6%). Have you tested any other quarq spindle power meters? In some comment you mentioned that you were waiting for apex crankset
@Shane Miller - GPLama Hi Shane. Thanks for this great review. Shame I only found it after ordering this blindly to cross match it with my SRAM Force ASX 2x 43/30 Wide crankset. I would be much more confident to go ahead with this having seen your Rival/Red demonstration. Like you have said - this is probably the only available option apart from dual pedal based PMs for my gravel bike. Just wanted to confirm that the Wide version (labeled as Quark Rival ASX 1 Wide Upgrade at Bikebug) works well with my Force 2x 43/30. Looks like you are showing Cadence data collected from this power meter. I am unable to display the Cadence rate on my Wahoo Element Bolt v2 from the Quark power meter. Bolt recognizes the Quark PM as a power source only. I had to pair separate Wahoo cadence sensor to get the data. Is this a problem with Wahoo Bolt only? How did you manage to get the Cadence data from Quark PM?
@@gplama thanks. That's what I was expecting to see. Unfortunately cadence field was not showing on my display when only powermeter was paired. I was also unable to manually add this field to my screen. Perhaps it's just a quirk with Bolt V2 and Quark Rival PM combination. Not a biggie for me since I already had a spare cadence sensor but it would be nice to get rid of redundancy.
@@gplama it must have been some kind of a glitch. I am able now to show cadence data directly from the Quarq powermeter. Firstly I had to enable Cadence field on the Bolts screen by pairing it with Wahoo cadence sensor. Once the Cadence field was showing on the main screen I have uninstalled the Wahoo sensor (Forget sensor) and now cadence is shown without pairing any other sensor - presumably reported by Quarq powermeter. It's just bizarre that I wasn't able to add Cadence field manually earlier on. I have found an old thread on internet discussing similar problem back in 2017. groups.google.com/g/wahoo-elemnt-users/c/XKXvY0kjWkI Hopefully this can help someone with similar issue in the future.
Thanks, Shane! Any updates from SRAM on the 6%? In the meantime, I have a few questions: - I see you have firmware version 1.1.13. I just checked and mine shows up to date at 1.1.12. Did you get a test version from SRAM? - I use a Garmin watch and head unit. Is there any advantage to doing the ‘Calibrate’ function on the watch, head unit, or zeroing in the SRAM app? I wasn’t sure whether the Garmin calibrate function actually affects the power meter itself or only allows the Garmin unit to know how much it needs to offset values given the power meter’s state - Do you think MagicZero can be added in a firmware update?
- No word back on the 6%. - Not sure on the firmware version side of things. - Calibration (or zeroing) only needs to be done with one device. It's then updated/stored on the meter. - MagicZero... unlikely. I'm not sure if it's technically possible with a spindle meter. They also need to differentiate the lower/budget units from the other offerings. If they make the low end units really really good, why buy the more expensive ones? :)
@@gplama Thanks for the updates. How did you do the 6% offset? I didn't see an option to do that in the SRAM AXS app (the only manual adjustment I could make was on the slope)
I an confirm I've needed to adjust 5.5% to get inline with my Tacx. At 0% Tacx at 250W the Quarq was reading 225-230W. after adjustment of 5.5% in the app both are reading ~250W (I have several bikes I've used on my Tacx and still do and they've all been closer to the Tacx so I trust the Quarq was under reading)
Hello. Good morning. I have a Sram Rival AXS powerometer. It marks me approximately 5 percent of others. What data do I have to change in the Sram APP so that it marks me well. Greetings and thanks.
Hey Shane, have you retested the rotor inspider again yet maybe?. They have had a new firmware update. I've updated all seems all good, but got nothing to compare with but its been solid so far. Ta Rick
Great review, Shane. Would the Quarq AXS Spider be compatible with the Rival D1 wide crank (1x 40T)? I can't seem to confirm compatibility on SRAMs website.
Hi, Shane do you know if Sram Red 1x come in a “wide” version similar to the rival ? I can’t seem to find any info on their website. Also red does not have as wide a chain line as a rival.. 145 and 147.5 mm respectively.
Maybe it's too late for the answer, but: Red doesn't come in a wide option at all, only Force or Rival do. And both 1x and 2x are available in both wide and regular versions, so 4 combinations in total.
Excellent review as always Shane! I’m in the market for a dual sided power meter pedal set for SPD (was interested in the Favero until seeing the extra Q-factor in your review). Have u found the Garmin pedals reliable? I moved away from Garmin head units due to all the issues my wife and I have had with reliability (or lack there of) of them and am hesitant to drop the coin back into Garmin. I’m well aware that all products can have issues, we maybe have just had a lot of bad luck with Garmin products
SPD = MTB. SPD-SL = Road pedals. The Garmin Rally RS (SPD-SL) are a better option in regard to q-factor compared to the DUO-Shi. As for the power accuracy.... it's complicated. The Garmin meter would likely be fine for most people. I'm having ongoing issues with drift after high power sprints (>1200W).
Greetings from Portugal!!! Great review (As always 😉) I'm looking to buy a nwe road bike and it will be my second road bike. I would like to purchase one with electronic gears, 12speed and powermeter option. Because the total plafond is around 4800-5000€ I'm looking for bikes with SRAM Rival Axs. In your opinion, it will make such a big difference buying the version with the spider power meter versus purchasing the one with power meter left crank arm - I have a little imbalance between L and R Leg (the left produces a little bit more watts ~4-6W) And does SRAM gave some kind of answer about those 6% or this a difference that we'll have to live/ride forever with? Keep up the good work and good rides👍👍
Eu comprei recentemente uma Canyon CF SL 7 disk eTap já com este potenciómetro. Acho que vale a pena dares uma vista de olhos, a bici está muito bem conseguida por 3.4k€.
You’ll only need to upscale it if you’ve measured and found an offset. Otherwise just complete the install process and new calibration within the AXS app and you’re good.
Shane, What are your thoughts about this Power meter vs. PowerPod? Both are in the same price range, but if you combine them, they could give you your cda in real-time on your Garmin. An interesting idea for the price.
To be honest, I'm not all that interested in 'opposing force' meters such as the PowerPod. Setup and configuration is usually clunky, you can't use them indoors, etc.
Hi Shane , thanks for the review, did you hear from SRAM about the 6%? I just received my new bike and it comes with one and I would like to know about their answer
I just purchased a Domane sl6 with etap rival axs groupset. Is there any reason why I should go with the sram axs spider power meter ($458) versus purchasing the upgrade sram power meter left crank arm ($249)? Thank you in advance.
Hi Shane. Any idea if you can set the left vs right balance for this power meter? E.g. rather than doubling, can I account for a 52:48 bias to the left.
It's a single sided meter... so the best you can do to account for an imbalance is to scale it up/down. If you know you have an imbalance then a single sided meter isn't the best option, imo.
@@gplama - I understand it’s a single sided meter, however you can still correct for imbalance if you know what the bias is…I would speculate that most people have an imbalance across the full range of power you deliver on a bike. My L-R balance varies from endurance to threshold. I see there is the slope adjustment, so I guess you could fiddle it there.
Hi sorry me again, with the static weight test, where did you find the guide or reference how to do this with this PM? Cannot find much on SRAM site and not sure what to make of the figures in the app, which you are showing.
Got this power meter on my Canyon Endurace CF SL. However it doesn't show me any power on my Wahoo ELEMNT. Candence works, but power is 0 during a ride. Any ideas?
How do you get rid of a old Strava who is connected to your Swift set up changed it to your new Strava please can you do this video for me because I've been trying to do this ages and ages
Hi Shane! I've encountered quite a few instances of my unit reporting non-0 cadence and power numbers while coasting - is this something you've encountered?
will this Rival AXS crank work with a SRAM 11x groupset? looking to upgrade my SRAM Apex-equipped bike to include power, just didn't know if the Rival crank would be "backwards compatible". unofficially, of course.
Apex is a different type of bottom bracket (GXP). Rival is DUB. Stages do a GXP left sided crank that looks easy to fit. Albeit much more £££ than the Rival upgrade. Failing that, it’s pedals.
@@dannyhopkin8882 swapping from Pressfit GXP to Pressfit DUB a possibility? seems like a new BB and and $400 crankset would be cheaper than the dual sided pedal alternatives
Shane Miller - GPLama did you ever get a response from SRAM / Quarq on this? I just ordered the upgrade kit and am curious if it's been addressed. Also, what tool are you using to compare power meter data files? Is it Rays?
Nothing back from SRAM on this one. There was a firmware update or two since this video for the Rival AXS meter, maybe that could address the issue. This was only a sample of one though. Comparison tool was the DCR Analyzer, yep.
@@gplama really appreciate the response, especially such a quick response! I’ll see about comparing my new one to single sided Assiomas over the next few weeks.
@@gplama 1st ride comparison, zeroed both in the house but forgot to at ride start. 3.125% difference on Power (not weighted average). BUT max average power (20 minutes) and normalized power were both within 1 watt between Rival spindle and left side only Assioma. Work (kJ) was equal between the two power meters.
Can it really get a pass if another, known good, Power Meter is required to test the readings and offset it a certain amount? With it being a budget PM, the likelihood that anyone buying will have a trusted source of Power seems quite low.
Good question. That’s up to people to decide. If you want accurate power then pay for a trusted/proven power meter, or validate the budget option as I have here.
@@gplama thanks mate. I’ve been pondering and waiting for the right pwr meter for the MTB that I’m not going to spend big bucks and then smash! Re garmin pedals. I sort of buy and bikes more often than I need to. Hence “cheaper” option haha
No follow up on this from SRAM. There is a firmware update I need to apply they released. I'd go with no adjustment unless you can measure/confirm it reads different than it should.
@@gplama Did my first ride yesterday. When compairing my HR zones with my Power zones they do not line up. When I did a short spin on my kickr after my ride to see the HR and power there they did line up. Seems to me that the 6% offset is still there. Can't put my bike on the kickr for full comparison beqause I don't have the right hub.
Hi @Shane Miller - GPLama my girlfriend just bought a new bike with this power meter, especifically the 1by xplr version, and we don't have a smart trainer or another power meter to do what you did... any feedback from sram on the 6% issue?
Anyone had issues with the battery going flat within a couple of days using this power meter? The power meter on my 2022 emonda sl6 seems to last 24hrs and then flat. this is using a lithium AAA... an expensive battery to keep replacing - let alone the environmental concerns! Any advice gratefully received
@@srenjepsen3723 I have the same problem, two or three trips and I have to change the battery, I heard that it may be necessary to leave it in the correct position so that the power meter is not active. But I did not find information on the Internet about this.
@Shane Miller thanks for the review. Any update from SRAM on why the power meter reads 6% high? I want to swap out my R8000 drivetrain for SRAM Force AXS 1x but with this Rival power meter crankset. I need an aluminum crankset because I use pedal extenders which break carbon cranks. Also, I have a set of Favero Assioma Duos which I could use to calibrate the SRAM meter. My left/right power is about 47%/53% right now at FTP wattages, so it seems like it would be better to calibrate the SRAM meter against total power (both Assiomas) rather than just the left pedal. What do you think? The Assiomas are great but I'm going with TIME ATAC pedals on both road and MTB because those are much better for my knees.
Still nothing back on this subject from them. As for calibrating against total power.... entirely your call. Not something I'd do myself due to the variability in L/R balance.
I bought this and is it was total trash. Calibrated at the beggining off every ride and about 30/40 minutes later the power would start going to zero. I was peddaling hard uphils and it would say 20/30/40W. I send it back and now waiting for replacement. I kinda lost faith in it
Hey folks, complete newb here and I have no idea what I am doing. I'm interested in purchasing the SRAM RIVAL AXS POWER METER, thing is. i have no idea if it is simply a case of swapping it over with the current crank (Ultegra) on my 2017 Giant Propel Advanced Pro 1. Has anyone out there performed this straight swap?
I purchased this a couple weeks ago and the big variance isn’t there. After doing the software updates and the calibration (pre-ride each time) I’ve done a few workouts and a zwift race. My most recent workout was 3x9 min over unders with z2 before and after. Rival power meter was 190w avg and DiretoXR was 187.5, although the first set was about 10w difference (higher on the rival), but the last 2 sets were only 2w difference
So I’ll share my experience with the Rival Power Meter: I’m lucky and own a Tacx Neo Bike which I use as my source of truth. But that power meter has an important caveat, it measures power on the magnetic wheel itself where as the Rival measures power in the crank (there’s always a small power loss between the crank and the wheel). But I like to use the Neo Bike as source of truth since it cannot be calibrated (in theory it has a very very small margin of error). I borrowed this week a Assioma Uno and calibrated the Uno against the Neo. The power factor is set to about -6.9%. Then I calibrated the Rival against that Uno. And there I had to set the Rival to ~ -8.5, yes, negative number. So I don’t think Gplama’s number here is a fixed value … sadly.
I can't see why this is described as brilliant when it's 6% off for no obvious reason, and most users would have no clue that it's off?! Some manual fudge is a really unsatisfactory solution
For training purposes, I think consistency is more important than accuracy. Even if it wasn't possible to adjust the 6% offset, it's good to know that it's consistent.
exactly..... the only thing that matters from any power meter is a consistent error.
This is honestly a piece of kit for those like myself who aren't athletes, aren't aspiring to be athletes, and just want something to track overall fitness. I'd been looking at getting a power meter since before I bought my current Roubaix Comp and now I have an option that integrates seamlessly into my Rival AXS groupset, right on! And the fact that it works as well as something definitely much more expensive makes me smile. I can't wait to buy one for my bike and really begin to track my progress on my fitness rides. Thanks for sharing Shane!
Hey Shane, have you had an answer yet fro Sram ......only joking! You have the patience of a saint sometimes mate. That question must have been asked more than 50 times in the comments and you didn’t lose your rag once. Well played sir.
Just wanted to stop here and say I just got this power meter and the 6%+ boost is needed! Boosted mine and numbers are very accurate!
Thanks - that's great to know! But how do you boost it?
@@ivanyhtang sram axs app>slope adjustment
@@jamesguirguis2435 thanks mate! I'm not familiar with SRAM yet but I'm waiting on a new bike with SRAM and thinking to upgrade to the power meter eventually
The timing could not have been better. I’ve been researching power meters for the past 2 weeks, gonna pull the trigger after my next pay period.
Can't wait to see that peedsplay power meter review
It’s a mystery box! 🎁
My LBS just hit me up to let me know they're (finally) getting these in soon. Got my order in so it'll go onto my Tarmac SL7 Comp. Can't wait to run some comparison tests and put the DCR Analyzer to work to see if I also have the 6% offset.
Keep me posted!
Hey mate, what did you end up doing?
Man, someone is a real sleepy tester or just slided into the comments to tell everyone that he's riding a SL 7.
I’m guessing the power meter in the mystery box is the Wahoo speedplay power pedals
I can't wait to get a pair of said mystery box. The initial data I've been hearing from around the traps....day 1 purchase for sure....shame you can't discuss further on said mystery box (darn trade embargo) would be easy advertising for them.
I just got one, I ust got a new bike with Sram Rival and the crankset that came with it was the wrong cranklength and not the gearing I wanted. The Crankset was €122 without Powermeter and €270 with, that's not even €150 difference that's a lot less than any other Powermeter! It's even less than the 4iiii Precision 3 I have on my last bike. From my first test, it's within 10 watts of the 4iiii, so for me that's good enough especially because I don't really do powertraining, I just like it for not going to hard on long climbs.
Thanks Shane for this review very helpful, I have been looking for a budget power meter for a while and have now ordered this one and its out of stock until May 2022.
They Mysterious power meter could only by the wahoo speed play dual pedals… Excellent video
Thank you, your reviews are always very thorough and well put together, KUDOS!
Also looking forward to hear back about this why 6%
any update Shane?
You and I have very different favourite websites.
Not sure if anyone noticed or did the firmware update to power meter, but could this be the fix for the 6% difference?
none of these power meters are consistent meter to meter. His assiomas are different from yours, etc. Same with everything.
Thanks Shane, great review! In a nutshell: Add 6% and you have your wattage 😅
Good to see that the Wahoo Speedplay power pedals are looking good ;-)
Awesome review! Was waiting for real numbers on this before I go out and buy it. But I still have a view doubts about the compatability. I have a force crankset and think about just getting the rival upgrade kit. But it would be interesting if the asymmetric stiffness and weight actually have an influence on performance, as well as on power readings. Even though its the non drive side, i could imagine the stiffness difference has an effect on your right and left side power distribution.
I would really be interested in a short test of a asymmetric setup and if the power reading still makes sense or if it's thrown off by an offset or just gibberish...
Something I learned the extremely hard way is not to compare two power meters due to the variability. You give a great example of this with the KICKR versus the SRAM. There are too many variables.
We have five sources of power in our household that agree almost perfectly. And I know this because I have compared them. And we have had 3 sources of power that don't agree, and I know this because I compared them. Two of the sources that don't agree are smart trainers so we simply use our bike power meters as the power source. The other source has the battery removed as it's junk. It's false that no two power meters can be compared. That's only true for bad ones, not good ones!
@@johntobin1383 You kinda made my point. In my case I had a power meter on a wheel versus a crank. They never matched and shouldn't. A power meter on a trainer and a crank based meter shouldn't either. But they should be consistent.
Mystery box? If only I could think of a brand who said they would launch their power meter pedals in July 2021 🤔
🤷🏻♂️😉
Hello!
There's a new update:
New Firmware Available (Version 1.1.16)
Release Notes
Improve power accuracy in certain rare edge cases.
Maybe they fixed the 6%?
I am a great fan of that channel specifically, and more other channels like this , but I can’t understand why to use the term “inaccuracies” for those wattage differences ?
It is a “bias” , and bias can easily be fixed or compensated(like you did).
“Inaccurate readings” is a phrase that should be related to noisy reading with some big standard deviations around the bias or some drifts (bias that changes with time for some reasons).
Keeping it simple. If it’s not accurate when compared to a known good/accurate meter or static torque test, it’s inaccurate.
After seeing this video I tried it for myself and 6% offset is correct. Did the test vs my kickr today, the latest quarq firmware installed on the quarq dub.
Thanks GPLama! 👍🏻
Which do you have? 1x, 2x, 2x wide? And I seem to be too stupid but how do you apply the upscale or is it just after the ride when you analyze the data?
@@BassSlaughter there's the slope value within the app you can adjust
Hi Shane, great video as always. Had a quick look though the comments, but couldnt find if SRAM got back to you about the 6% scaling. Is this still required or have they released a firmware upgrade or explanation. Thanks Chirs
No response from them on this one. There was a firmware update since posting... but I'm not across the specifics.
@@gplama thanks for getting back. Much appreciated
Fascinating.... I have a 4iiii single sided shimano 105 that I suspect is under reporting. Might dig into my own experiments now I have a Kickr as a reference system. I guess I could record a zwift session with the 4iiii as the power source but then have my phone record an indoor cycling session for the Kickr. At least I'll have a better idea what is happening with my outdoors numbers. I love home science experiments :D
Great review. Interested to get Sram’s response…!
My Quarq Dzero was reading 6% lower than everything I compared it to ;) It was one of the early ones (2017). Static calibration was fixing it by +4% and I bumped it another 2% by doing long term dynamic comparisons with other power sources. Only after that my power data started to make sense. That's why I think every power meter should have an option to fine tune the calibration if someone have good comparison data to correct it.
Had a similar issue with my 2018 Quarq Dzero it is overreading 5-6% in stock configuration, but apart from that it's doing a good job. Just aligned it to my KickR Core
@@Freddy3792 How do you know it's overreading? If it's just by comparison to the Core that doesn't tell you anything. Have you done a static calibration or compared to any other known power devices? It sounds like the poster above had an inaccurate Quarq and I'm sure every brand has some bad units, but they have a good reputation and the 3 Quarqs we've had at various times have all agreed with one another. I'd trust the Quarq before I trusted the Core.
@@johntobin1383 I have compared it to multiple powermeters in- and outdoors. I have Assiomas, the Kickr and a 4iiii. So I could compare the Kickr to multiple powermeters. I also have a lot of friends who have a similar weight to me with powermeters and we have a lot of climbs here. The quarq consistently overread.
I have two Rival PM spindles: one reads extremely low (to the tune of 6%) and the other is pretty darn good at factory slope. I'm curious what your slope values looked like before and after the 6% correction. SRAM meters are all over the place as I've also had a Force AXS Quarq spider that read almost 10% lower than a KICKR... so like actually 12% low because of drivetrain loss.
I appreciate your video! A point that I am missing: What is your experience regarding "Manual Zero required". According to SRAM it should be done prior to EVERY ride. Isn't this a bummer? Actually, I dont understand why this should be done repeatedly. I guess what you show here tell us this is not necessary, however, a precise initial calibration has to be done instead?
You'll find most meters that don't have auto-cal will advise a manual zero before every ride. It shouldn't be necessary for every ride if the conditions are the same as the previous manual zero. If being confident with the accuracy without calibration or faff like this is a requirement, this isn't the power meter to use.
Tested the Rival AXS power meter, compared to the trainer (Elite Suito) the PM is 8% to 10% lower (during initial testing).
You've still got the L/R balance to isolate there. Comparing a single sided meter to something that measures total power isn't ideal.
@@gplama for sure. Just adding another data point as it seems that it's been low in all reviews that actually compare it to something.
But if nothing else I hope that adjusting this may help me get comparable numbers on the road that I'm used to from Zwift.
Tested only pedalling with the left foot, the quark (divided by two) is on average 3-4% lower compared to the trainer.
I know this review is a year old now, Has anyone chucked this on a MTB with a DUB eagle drive side bolted up?
Hi Shane, I found this video as I just bought a bike with this power meter installed. From my previous riding I have Assioma Duos. Would you say it is reasonable/good idea to keep them or that this is sufficient and I can sell them?
I have the Rival AXS setup. Why is the upgrade kit sold with the whole left crank and spindle instead of the power meter alone? Can’t the power meter be mated to any existing Rival crank arms?
The power meter is in the spindle that's attached to the left crank arm, so they're sold as a single left arm + spindle. It can be used with an exiting rival right crank arm/spider.
I know it’s too early to know why the 6% difference is there but for those without access to a second single power source do you think I would be accurate enough to do left leg drills on the kickr to determine if we need to adjust the scaling ?
Ahhhh… that’d be an interesting experiment. Not sure it’d give accurate enough results.
Even without adjusting 6% the only really important thing is that it's measuring consistently which it was. You could just have an FTP equivalent on each meter.
True, but adjusting your FTP based on the equipment used isn't an ideal scenario. If a meter is consistent then it should be made
to be consistently accurate.
@@gplama you wouldn't need to adjust your FTP as in have 2 FTP tests, you could just know that your adjusted FTP on one of the meters is x and it's y on the other. Ultimately it makes no difference as long as it's consistent. One thing I think would be great for you to highlight in videos is that these findings are only accurate and true to the specific meters you're testing. Favor Assioma pedals and Wahoo Kickrs and SRAM Rival power meters are not all going to be consistent to their cousins from the same brand and build.
Absolute perfect timing, getting one of these this coming week.
Do you know if you can split the v3's to uno the same you did with the assiomas? I'd like to perform the same testing when I get mine next week, but have v3's not the assiomas.
Not sure on this. I've never split a set of Vector 3 (or Rally) from dual into single. It should be possible.... but I'd need to check.
Hi there!! Hope you’re doing great!! I’m having issues with my power meter. I bought a second hand bike which came with this quarq. My wahoo element finds it and paired with it but is not showing any data. I changed the battery (just in case) but still. Is not showing anything 😢 Any advice? Thanks a lot!
@gpllama Did you ever hear back from SRAM?
Is the really necessary probably not but I really love this👍
I just got a Sram Rival axs power meter and found that mine read between 6-8% too low so was wondering how to upscale it in the app.
@GPLama - I have been running this PM along with my pair of Assioma Duo's .... I have cranked the slope now all the way to +9 and my last steady state ride it was still reading like 7% under the Assioma's , last I checked my left / right balance was pretty much 50/50. Any suggestions or should I just keep cranking up the slope setting until I get it closer?
Split the DUO into UNO so you're comparing apples to apples (Single left power with single left power). Then perform a number of tests at different power zones. Review this data to see if there's an average difference.
@Forest Penland Any update?
I remember hearing about SRAM single use power meters, which you bin after you've worn through the chainrings --- is this one of them too?
No
Hi just want to ask which one is compatible with the Giant Advanced Revolt 1 2022 Sram Rival etap AXS 1x, is the Road DUB BBS or the Road Wide DUB version of the power meter?
Is that the Cervelo Áspero Red frame? That’s the Color of my Áspero the color is Wicked Pissah Cool 😎
I have been waiting on this review as I have been closing in on pulling the trigger on the rival groupset...when/if it's available.
OK, now to the one question I have based on the review, and I know you are still waiting on more information on them. But since you were able to make that six percent adjustment in the app, is it accurate to assume that whatever the issue is, it will be correctable through a firmware update?
Great review, now if we could actually get them...that would be awesome.
I’ll wait to hear back on this one from SRAM.
@@gplama Sounds great. Thanks, Shane. I'll just wait to see what you hear back then.
Awesome review as always Shane have you any word back why the 6% yet?
I never got an explanation on this.
@@gplama cheers mate appreciate the reply, can't seem to find any in stock anywhere anyway so might have to try something else for the gravel bike anyway!
I'm a bit surprised that both you and DCrainmaker had major issues with the accuracy of this crank based powermeter and neither of you has followed up on it. This is still a current device and I would assume many 1000's sold. I don't tend to read any other reviewers about tech stuff like this as you two really dig deep when testing stuff and I trust your advice. But this product seems to have slipped through the net. Your massive testing of Shimano power meters to get to the bottom of those issues shows what lengths you went to, why hasn't Sram faced the same scrutiny?
It's very hard for average users to do comparison testing as we don't have multiple head units and power meters. So coming up with a number like 6% that we should adjust the offset to isn't easy.
I didn’t have any follow up from SRAM. I’ve also recently installed this again, updated the firmware, and am retesting. Mentioned in my recent Assioma PRO MX video. Shimano meters aren’t a good comparison here. This is a single sided low spec meter that isn’t used in the pro peloton. They use Quarq spiders. Of which I’ve done a LOT of content. Anyhow… this is low demand and low view content. If you’re asking me to follow up and retest for your own interests, maybe there was a better way to phrase it.
@@gplama Sorry, I didn't mean to criticise, I'm just puzzled. I was surprised that something that I thought would have interested a lot of people didn't seem to get follow up. I trust the reviews that both you and DC do and the time you spend testing stuff, which is why this review, where both of you found issues but seemed generally happy caused my frustration. Given the low cost I would have expected this to have been one of the most popular options for getting power data. If you are not getting any demand or views for it then I'm obviously wrong. I wasn't expecting you to re-test for my benefit.
I just don't know where else to go (or trust) to find out if there is an ongoing issue with this or if both of you just had faulty units to test, hence my frustration.
Thanks for the follow-up. I've had a few things thrown my way in the last 24hrs that have rattled me a little in this space. Back on track - Ultimately it's up to SRAM (and every other company) to not only produce products but also build trust with consumers in their products. Ideally their marketing wouldn't simply be the technical specs and influencers 'using' the product, but almost copying what both DCR and I do - actually testing the product, or at the very least, giving insight into their own internal testing/validation/certification processes. I do have a pretty good line of communication with SRAM, but they never responded to this specific query/review.
I'll keep collecting data from this meter and the PRO MX-1 (single sided pedal meter) and see how things line up.
@@gplama I appreciate you responding to me.
Shane you do yourself a little injury when you put the Rival onto the Quarq D0. The good old hit your hand on the chain ring move???
Hot tip: Don’t remove pedals from cranks that aren’t on a bike. It’s dangerous!
@@gplama I’ve done it. Had a wonderful trip to Urgent Care right after.
Hi Shane! Does every quarq gauge in the spindle (I'm considering buying an MTB X0 crankset) has as big reading difference (6%). Have you tested any other quarq spindle power meters? In some comment you mentioned that you were waiting for apex crankset
I've only tested one early production spindle power meter from Quarq, so I don't know how the others perform. I'd assume they've sorted things out.
@Shane Miller - GPLama Hi Shane. Thanks for this great review. Shame I only found it after ordering this blindly to cross match it with my SRAM Force ASX 2x 43/30 Wide crankset. I would be much more confident to go ahead with this having seen your Rival/Red demonstration. Like you have said - this is probably the only available option apart from dual pedal based PMs for my gravel bike. Just wanted to confirm that the Wide version (labeled as Quark Rival ASX 1 Wide Upgrade at Bikebug) works well with my Force 2x 43/30.
Looks like you are showing Cadence data collected from this power meter. I am unable to display the Cadence rate on my Wahoo Element Bolt v2 from the Quark power meter. Bolt recognizes the Quark PM as a power source only. I had to pair separate Wahoo cadence sensor to get the data. Is this a problem with Wahoo Bolt only? How did you manage to get the Cadence data from Quark PM?
Cadence data should come through with the paired power sensor.
@@gplama thanks. That's what I was expecting to see. Unfortunately cadence field was not showing on my display when only powermeter was paired. I was also unable to manually add this field to my screen. Perhaps it's just a quirk with Bolt V2 and Quark Rival PM combination. Not a biggie for me since I already had a spare cadence sensor but it would be nice to get rid of redundancy.
@@gplama it must have been some kind of a glitch. I am able now to show cadence data directly from the Quarq powermeter.
Firstly I had to enable Cadence field on the Bolts screen by pairing it with Wahoo cadence sensor. Once the Cadence field was showing on the main screen I have uninstalled the Wahoo sensor (Forget sensor) and now cadence is shown without pairing any other sensor - presumably reported by Quarq powermeter. It's just bizarre that I wasn't able to add Cadence field manually earlier on. I have found an old thread on internet discussing similar problem back in 2017. groups.google.com/g/wahoo-elemnt-users/c/XKXvY0kjWkI
Hopefully this can help someone with similar issue in the future.
@@TadeuszPiszel Thanks for the follow up on this one!
Thanks, Shane! Any updates from SRAM on the 6%? In the meantime, I have a few questions:
- I see you have firmware version 1.1.13. I just checked and mine shows up to date at 1.1.12. Did you get a test version from SRAM?
- I use a Garmin watch and head unit. Is there any advantage to doing the ‘Calibrate’ function on the watch, head unit, or zeroing in the SRAM app? I wasn’t sure whether the Garmin calibrate function actually affects the power meter itself or only allows the Garmin unit to know how much it needs to offset values given the power meter’s state
- Do you think MagicZero can be added in a firmware update?
- No word back on the 6%.
- Not sure on the firmware version side of things.
- Calibration (or zeroing) only needs to be done with one device. It's then updated/stored on the meter.
- MagicZero... unlikely. I'm not sure if it's technically possible with a spindle meter. They also need to differentiate the lower/budget units from the other offerings. If they make the low end units really really good, why buy the more expensive ones? :)
@@gplama Thanks for the updates. How did you do the 6% offset? I didn't see an option to do that in the SRAM AXS app (the only manual adjustment I could make was on the slope)
@@michaelpark3698 That's the one. Slope adjustment.
I an confirm I've needed to adjust 5.5% to get inline with my Tacx. At 0% Tacx at 250W the Quarq was reading 225-230W. after adjustment of 5.5% in the app both are reading ~250W (I have several bikes I've used on my Tacx and still do and they've all been closer to the Tacx so I trust the Quarq was under reading)
Hello.
Good morning.
I have a Sram Rival AXS powerometer.
It marks me approximately 5 percent of others.
What data do I have to change in the Sram APP so that it marks me well.
Greetings and thanks.
Will there be a review on the mystery box power meter coming?
Yep! Soon….. I hope.
Hey Shane, have you retested the rotor inspider again yet maybe?. They have had a new firmware update. I've updated all seems all good, but got nothing to compare with but its been solid so far. Ta Rick
Trying to get a hold of firmware .30
@@gplama updated mine to 1.028, I guess that one has not made any improvements, .30 is coming then?🤔
@M F sweet!! Look forward to that 😁👌
@M F out of interest what is your hardware revision on the inspider. Mine is 100. Ta Rick
@M F k cool.. thought they might of updated hardware too. Seems like they haven't going by that on new batch.👍
Well that dual-sided power meter can't be cranked-based...
*Oh..... yes. Correct. :)
Great review, Shane. Would the Quarq AXS Spider be compatible with the Rival D1 wide crank (1x 40T)? I can't seem to confirm compatibility on SRAMs website.
The interface should work.You'd be much better off with a Force crank though, imo.
@@gplama Thanks Shane. Will keep the crank recommendation in mind.
So if I have Rival 1x AXS,
I have to get the wide crank arm upgrade?
Hi, Shane do you know if Sram Red 1x come in a “wide” version similar to the rival ? I can’t seem to find any info on their website. Also red does not have as wide a chain line as a rival.. 145 and 147.5 mm respectively.
Maybe it's too late for the answer, but: Red doesn't come in a wide option at all, only Force or Rival do. And both 1x and 2x are available in both wide and regular versions, so 4 combinations in total.
Excellent review as always Shane!
I’m in the market for a dual sided power meter pedal set for SPD (was interested in the Favero until seeing the extra Q-factor in your review). Have u found the Garmin pedals reliable? I moved away from Garmin head units due to all the issues my wife and I have had with reliability (or lack there of) of them and am hesitant to drop the coin back into Garmin. I’m well aware that all products can have issues, we maybe have just had a lot of bad luck with Garmin products
SPD = MTB. SPD-SL = Road pedals. The Garmin Rally RS (SPD-SL) are a better option in regard to q-factor compared to the DUO-Shi. As for the power accuracy.... it's complicated. The Garmin meter would likely be fine for most people. I'm having ongoing issues with drift after high power sprints (>1200W).
@@gplama sorry Shane meant SPDL pedals. Did a 400km Audax on Saturday and my brain is still tired
@@gplama thank you for your advice. Always appreciate your honest reviews
@@gplama ended up going with the Garmin Rally. Thanks for your input Shane :)
Greetings from Portugal!!!
Great review (As always 😉)
I'm looking to buy a nwe road bike and it will be my second road bike. I would like to purchase one with electronic gears, 12speed and powermeter option. Because the total plafond is around 4800-5000€ I'm looking for bikes with SRAM Rival Axs. In your opinion, it will make such a big difference buying the version with the spider power meter versus purchasing the one with power meter left crank arm - I have a little imbalance between L and R Leg (the left produces a little bit more watts ~4-6W)
And does SRAM gave some kind of answer about those 6% or this a difference that we'll have to live/ride forever with?
Keep up the good work and good rides👍👍
Eu comprei recentemente uma Canyon CF SL 7 disk eTap já com este potenciómetro. Acho que vale a pena dares uma vista de olhos, a bici está muito bem conseguida por 3.4k€.
@@JorgeTeixeira obrigado, mas já adquiri uma Giant TCR SL 1 Disc com potenciómetro Quarq
Thanks, Shane I just got a SRAM/Quarq AXS crank/spindle meter. Not sure how you upscale 6% on the app. Is that the slope adjustment? Cheers, Dex
You’ll only need to upscale it if you’ve measured and found an offset. Otherwise just complete the install process and new calibration within the AXS app and you’re good.
@@gplama thanks. I was going to do a comparison with Kickr V5 and then adjust if necessary.
Shane,
What are your thoughts about this Power meter vs. PowerPod? Both are in the same price range, but if you combine them, they could give you your cda in real-time on your Garmin. An interesting idea for the price.
To be honest, I'm not all that interested in 'opposing force' meters such as the PowerPod. Setup and configuration is usually clunky, you can't use them indoors, etc.
Given the 8-bolt mounting pattern, could you mount Red AXS chainrings to the drive side of the Rival crankset??
Yes. But if you're after the weight, the cranks make up the biggest difference
Mine is flawless, no need to upscale. Maybe the new firmware or am I just lucky? ;-)
Did you get feedback from SRAM on the wide option calibration?
Hi Shane , thanks for the review, did you hear from SRAM about the 6%? I just received my new bike and it comes with one and I would like to know about their answer
No answer back on this one. There has since been a few firmware updates and I’ve had reports of other units not needing any adjustment.
@@gplama thank you so much much for taking the time to reply, btw this channel is great!! Thanks again!
I just purchased a Domane sl6 with etap rival axs groupset. Is there any reason why I should go with the sram axs spider power meter ($458) versus purchasing the upgrade sram power meter left crank arm ($249)? Thank you in advance.
Spider will give you real total power, not just left x2. Spider option will likely be a lot lighter too.
@@gplama thank you for breaking that down. I now believe it’s worth the extra $$$
Hi Shane. Any idea if you can set the left vs right balance for this power meter? E.g. rather than doubling, can I account for a 52:48 bias to the left.
It's a single sided meter... so the best you can do to account for an imbalance is to scale it up/down. If you know you have an imbalance then a single sided meter isn't the best option, imo.
@@gplama - I understand it’s a single sided meter, however you can still correct for imbalance if you know what the bias is…I would speculate that most people have an imbalance across the full range of power you deliver on a bike. My L-R balance varies from endurance to threshold. I see there is the slope adjustment, so I guess you could fiddle it there.
Shane, do you normally have your PM’s set to include zeros or not? Unsure as to whether this affects the numbers or not 🤔
Yes for power, no for cadence. I think this is the default. No impact on the steady state ERG tests. They’re all pedalling.
Hi sorry me again, with the static weight test, where did you find the guide or reference how to do this with this PM? Cannot find much on SRAM site and not sure what to make of the figures in the app, which you are showing.
Static testing this unit is not officially supported, so it won't be in their docs. iirc the static test was ballpark correct but the scaling wasn't.
Got this power meter on my Canyon Endurace CF SL. However it doesn't show me any power on my Wahoo ELEMNT. Candence works, but power is 0 during a ride. Any ideas?
One for SRAM support
@@gplama solved. Didn't calibrate it. Didn't notice the option in the AXS app.
How do you get rid of a old Strava who is connected to your Swift set up changed it to your new Strava please can you do this video for me because I've been trying to do this ages and ages
Disconnect from within Zwift Companion app under MORE, SETTINGS, CONNECTIONS then reconnect. It should ask for your Strava login so use the new one
how do you record power from two different power meters? with two garmin units?
How can I fine tune the output with the app. Mine is 9% below my Tacx flux S. So I need to bump it up a bit.
Multiple testing sessions and getting a ton of data to ensure the offset is as accurate as possible, then adjusting accordingly.
Hi Shane! I've encountered quite a few instances of my unit reporting non-0 cadence and power numbers while coasting - is this something you've encountered?
Not that I recall with this unit. Is it on the latest firmware?
@@gplama yeah, latest firmware, and it happens recalibrating and even reinstalling the crank.
will this Rival AXS crank work with a SRAM 11x groupset? looking to upgrade my SRAM Apex-equipped bike to include power, just didn't know if the Rival crank would be "backwards compatible". unofficially, of course.
Apex is a different type of bottom bracket (GXP). Rival is DUB. Stages do a GXP left sided crank that looks easy to fit. Albeit much more £££ than the Rival upgrade. Failing that, it’s pedals.
@@dannyhopkin8882 swapping from Pressfit GXP to Pressfit DUB a possibility? seems like a new BB and and $400 crankset would be cheaper than the dual sided pedal alternatives
@@warrior6hockey - beyond my expertise, I’m afraid.
Interesting, Just got the Axs spindle and mines 20% off.....on the high side (about 30 watts). Not super impressive.
Shane Miller - GPLama did you ever get a response from SRAM / Quarq on this? I just ordered the upgrade kit and am curious if it's been addressed. Also, what tool are you using to compare power meter data files? Is it Rays?
Nothing back from SRAM on this one. There was a firmware update or two since this video for the Rival AXS meter, maybe that could address the issue. This was only a sample of one though. Comparison tool was the DCR Analyzer, yep.
@@gplama really appreciate the response, especially such a quick response! I’ll see about comparing my new one to single sided Assiomas over the next few weeks.
@@Sharpetz Sounds like a good plan. Let me know your results. 👌🏼
@@gplama 1st ride comparison, zeroed both in the house but forgot to at ride start. 3.125% difference on Power (not weighted average). BUT max average power (20 minutes) and normalized power were both within 1 watt between Rival spindle and left side only Assioma. Work (kJ) was equal between the two power meters.
Hi Shane, my power meter won't connect with the app, so I'm unable to do the 6% switch. any tips on how to sync power meter to the app ? thanks a lot
I’d only do the 6% if you are confident your unit is also reading lower.
Ive just upgraded to a sram rival etap. Im waiting for the power meter part to come in. Should i upscale anyway?
No.
Can it really get a pass if another, known good, Power Meter is required to test the readings and offset it a certain amount? With it being a budget PM, the likelihood that anyone buying will have a trusted source of Power seems quite low.
Good question. That’s up to people to decide. If you want accurate power then pay for a trusted/proven power meter, or validate the budget option as I have here.
Thanks Shane! How do you add those 6% to get the "good" data? Is it via the app or something? can you calibrate it this way?
Within the SRAM AXS app.
@@gplama You can just add those 6% on the app and it corrects the powermeter directly so you get the correct value "live" afterwards, is that right?
@@mathofmi2 Yes, but first you need to verify the unit you have is also 6% 'out'. It may not require any adjustment at all.
@@gplama Alright! Thank you again!
So when you say a LH crank/spindle fits “any” sram dub crank set, what about GX stylo?? Hmmm🤔
Any DUB compatible road crankset with the DUB spindle interface. Rival Force Red. Not sure on the Eagle side of things… ping SRAM on this.
@@gplama thanks mate. I’ve been pondering and waiting for the right pwr meter for the MTB that I’m not going to spend big bucks and then smash! Re garmin pedals. I sort of buy and bikes more often than I need to. Hence “cheaper” option haha
I have bought the Rival axs with power, should i have adjust to the 6%???? or keep it as zero???
The only way to know is to perform a comparison against a known-trusted second source of power.
Any update on the 6% offset? Getting my bike this week and want to know if the 6% upscale is still nessesary!
No follow up on this from SRAM. There is a firmware update I need to apply they released. I'd go with no adjustment unless you can measure/confirm it reads different than it should.
@@gplama Did my first ride yesterday. When compairing my HR zones with my Power zones they do not line up. When I did a short spin on my kickr after my ride to see the HR and power there they did line up. Seems to me that the 6% offset is still there. Can't put my bike on the kickr for full comparison beqause I don't have the right hub.
@@ShowTimeHOLLAND Hey mate so just to confirm, you also had to bump up by 6%?
@@mrwezbo Sorry for the late response but yes.
@@ShowTimeHOLLAND hi Tim. Mine Will be delivered soon. Can you please explain how to fix thé 6 % issue? Tia ! kind regards
Hi @Shane Miller - GPLama
my girlfriend just bought a new bike with this power meter, especifically the 1by xplr version, and we don't have a smart trainer or another power meter to do what you did... any feedback from sram on the 6% issue?
Nothing back yet.
@@gplama something new about the 6% issue??
Hi Shane, sorry this is unrelated but have you tried oval chain rings? I don't see a video on those.
Nope. I’m not convinced of their benefits. Some people like them.
@@gplama So no chance of trying them? Just asking because I like the way you review items.
They’re not on the list of things to cover.
Anyone had issues with the battery going flat within a couple of days using this power meter?
The power meter on my 2022 emonda sl6 seems to last 24hrs and then flat. this is using a lithium AAA... an expensive battery to keep replacing - let alone the environmental concerns! Any advice gratefully received
I have the same issue. Did you found a solution?
@@srenjepsen3723 I have the same problem, two or three trips and I have to change the battery, I heard that it may be necessary to leave it in the correct position so that the power meter is not active. But I did not find information on the Internet about this.
Have sram come back to you yet on the 6% yet Shane?
Nope. I have to loop back to this one soon with the firmware update they released for it.
@@gplama ok cheers for the update. Will probably see you around at the Ballarat Classic on Sunday no doubt!
Did ever get a response from SRAM? Has the 6% issue been addressed in a firmware update?
I didn't get anything back from them on this. There was a follow up firmware update that mentions accuracy. This is only n=1 though.
@Shane Miller thanks for the review. Any update from SRAM on why the power meter reads 6% high? I want to swap out my R8000 drivetrain for SRAM Force AXS 1x but with this Rival power meter crankset. I need an aluminum crankset because I use pedal extenders which break carbon cranks. Also, I have a set of Favero Assioma Duos which I could use to calibrate the SRAM meter. My left/right power is about 47%/53% right now at FTP wattages, so it seems like it would be better to calibrate the SRAM meter against total power (both Assiomas) rather than just the left pedal. What do you think? The Assiomas are great but I'm going with TIME ATAC pedals on both road and MTB because those are much better for my knees.
Still nothing back on this subject from them. As for calibrating against total power.... entirely your call. Not something I'd do myself due to the variability in L/R balance.
just installed and can not get it to connect to zwift at all.. did you have the same issues?
I can't recall if I connected it to Zwift. If it's not working best contact Zwift support and have them determine what's happening.
Looks like SRAM just updated the rival power meter firmware to 1.1.16. Do you still have one with you Shane?
Yep. Any change logs/notes with the update?
@@gplama yeah, "improve power accuracy in certain rare edge cases"
I bought this and is it was total trash. Calibrated at the beggining off every ride and about 30/40 minutes later the power would start going to zero. I was peddaling hard uphils and it would say 20/30/40W. I send it back and now waiting for replacement. I kinda lost faith in it
Hey folks, complete newb here and I have no idea what I am doing. I'm interested in purchasing the SRAM RIVAL AXS POWER METER, thing is. i have no idea if it is simply a case of swapping it over with the current crank (Ultegra) on my 2017 Giant Propel Advanced Pro 1. Has anyone out there performed this straight swap?
Best look at a Stages or 4iiii single sided crank that you can switch on very easily with that setup.
Thanks! @@gplama Stages a reliable kit these days?
@@cryptominingsauce4043 Gen III units have been reliable based on what I read. (and Mrs Lama has one on her bike)
Hey Shane, just wondering if you ever heard back from SRAM on the 6% variance here? I'm about to install one of these, so just curious.
Nothing on this, no. I'm trying to get a hold of the Apex single sided meter (same design) to see how that holds up.
I purchased this a couple weeks ago and the big variance isn’t there. After doing the software updates and the calibration (pre-ride each time) I’ve done a few workouts and a zwift race. My most recent workout was 3x9 min over unders with z2 before and after. Rival power meter was 190w avg and DiretoXR was 187.5, although the first set was about 10w difference (higher on the rival), but the last 2 sets were only 2w difference
So I’ll share my experience with the Rival Power Meter: I’m lucky and own a Tacx Neo Bike which I use as my source of truth. But that power meter has an important caveat, it measures power on the magnetic wheel itself where as the Rival measures power in the crank (there’s always a small power loss between the crank and the wheel). But I like to use the Neo Bike as source of truth since it cannot be calibrated (in theory it has a very very small margin of error). I borrowed this week a Assioma Uno and calibrated the Uno against the Neo. The power factor is set to about -6.9%. Then I calibrated the Rival against that Uno. And there I had to set the Rival to ~ -8.5, yes, negative number. So I don’t think Gplama’s number here is a fixed value … sadly.
Is the name of the "One you cannot name" "Lord Voldemort" by any chance?
How do you get it to send Cadence to a garmin comp?
It'll be included in the power channel.
I can't see why this is described as brilliant when it's 6% off for no obvious reason, and most users would have no clue that it's off?! Some manual fudge is a really unsatisfactory solution
I think I explained this a few times. It’s a sample of one. And when resolved for this n=1 it was brilliant. Let’s see what SRAM say.