You put so much thought into your work and communicate your thoughts clearly. I really appreciate your effort. Also, it kinda looks like you shred, so right on.
The amount of time and research that goes into these videos is incredible. Thank you for becoming my go to source for mountain bike brake reviews as you go into all the details I want to know about!
ok i watch a lot of youtube, i mean ALOT. a lot of professional “career” youtubers from all genres. and this channel has probably the best or at least top 3 narration and verbal description of things ive seen on this platform. WOW so impressive and each time another video comes out im just as impressed as the time before. well done and keep up the production quality and extremely high quality content and dialog. thank you
Agreed! However, personally I’d venture as far as outlawing all allen tools/bolts and creating the official “Church of the Torx the only true God, ya’ll others are infidels!”, but that’s probably only me. 😊
Wasn't expecting this one from you so soon. Lovely surprise, and with the LHT still to come! These brakes are still at the top of my short list, and although that design flaw is something that probably won't affect me, it's definitely good to know. Your reviews are such a valuable resource. Keep up the great work!
Excellent video Dale! We’ll personally be updating our images on our store to inform customers to check their ratio setting for interference with the lever reach adjustment. Great job discovering that! I’m also going to see if just makes sense for us to pay out of pocket to include a nice hex key for the set screws. I’ll be taking the my Lewis reps to see if we can get a revision of the LHP with the torx set screw of the LHT. I agree the two adjustment screws can be annoying (we do reference in our site it’s not fully tool-less functionality) Thanks for all your hard work! - Bryce at Atlus Bikes
That's awesome Bryce, hopefully your message (and this video) help Lewis consider a running change to this new design. Thanks for keeping customer safety your top priority! 🙌
@@DaleStone ordering bulk Tekton ball end Allen keys as we speak haha. A few dollars of mine is worth everyone’s safety and also worth not stripping out tiny hex screws, that’s the worst! I’ll message my rep tonight and share your video and issues you’ve experienced. I 100% agree that the LHT has better ratio adjustment. Most bike tools will have the torx and not that tiny hex key. Even if they did no way you’re fitting the tool between the handle and reservoir
@@BK_BT You get it. I appreciate how constructive and wholesome the Lewis comment sections tend to be in comparison to dealers, outlets and riders trying to justify their purchases from the big two...
@@DaleStone I guess we cannot win them all haha. The comments are quite great and constructive which I agree is very nice and also very different haha. Only everyone benefits from being understanding, civil and just nice to each other. Hate and ego never got anyone anything. Keep doing the good work man!
Awesome work dale. Happy to hear you advocating transparency and safety for consumers much like GN. Its good to hear that there is a tangeable difference in adjustments at the lever and make me wonder about mixing and matching various caliper and levers, and if theres a objective way to determine how much performance is derived from either end.
You know i just bought the Black Friday special trinety and i blame you and these videos for it😂 we need more unpayed honest product reviews like yours.
@@DaleStone it’s crazy to be honest like you put me on to those brakes even though their made like 4 hours away from where i live. Thanks though. Should be here tomorrow super stoked on them. Cheers 🍻
Thanks for testing it. I am a bit of a brake nerd, with various hybrid systems tested, but that interference is totally unacceptable, so is the play on the lever. Quality had it price it seems. Great tech vid. Subscribed.
Surely reducing the knob diameter would allow the lever to not make contact or do what Hope does and use an external pin or grub screw . That knob is too big (cough) .
Don't get me wrong, when I see a Dale Stone brake review I click immediately and bask in its glory.. But... when is the Dominion review going to be finalised?! The TBC on the comparison table is irking my inner completionist! 😂
Ok... I'll ask the question that always jumps in my brain when I see a Lewis review. Can you do the Ali express copy of the truck stuff next? III PRO E4s. Some other reviews suggesting they are weirdly good for a fifth of the price of a mid tier brake. Love the vids bud.
fellow brake snob here, PLEASE try to get your hands on a set of Radic Performance Kahas in for review and evaluation. ive been eyeing these for a long time but there is limited online consumer info in north america and i only have seen one or two videos on them. i feel like they are WAY up your alley and id love to see a review.
Another excellent production! Thank you! The existing mtb review channels/websites should count their blessings. Do you think a Formula Cura 4 review is possible? And I think you mentioned TRP DHRs are too linear but we'd be stoked if you ever decided to make a video
You're my official source for info on the brand now... 😅 thanks for updating us! My original set and second set of LH4 are still on duty, I'm (not so) glad to report they experienced road salt of Quebec roads and -7°c I clear my bike with fresh water when I come home but yeah, hate that. A bit less response but they work, I must specify I replaced the original fluid with Maxima mineral oil.
Good work on the review. How does your prefered leverage ratio on the LHP compare to the LH4 lever? I don't remember you mentioning how they compare to LH4s or did I miss it. Thanks!
Good question, I did forget to include that. I'd say the LH4 feels very similar to the LHP in my least favourite position, the one I discussed first and compared to a light lever SRAM brake, and maybe even with a bit less power too. Still very usable, but I much prefer the opposite setting. 🙂
Best brake reviews out there 👍 Although I don't 100% agree with the choice to use the Trickstuff pads with these brakes as it might not be an entirely accurate depiction of what they would be like for the average person who would buy these. Although on the other hand I could see it being pretty likely that someone who buys these brakes would eventually buy those pads anyway when the original ones wear. Oh also watch out for cherry picked examples when receiving items directly from manufacturers.
I see where you're coming from, but I felt that it was more important to have the most accurate comparison possible to the Maximas (which I'll be uploading before Christmas). With more time I would've definitely liked to test both pad options! 🙂
phew. This is like going to a college lecture where the professor provides a dense reading of a subject for 30 minutes then leaves for his next class leaving the students deluged with data hoping they don't get too many questions of the material covered at the end of term exams
ily dale i live in the same area as you you make the best videos and now you got me hyped about these brakes. Quick question, how much more powerful are these brakes than sram code r's? I ride stuff like seymour and whister and was wondering if these provide a big enough performance boost
The price difference quoted between brakes is surprising between regions (e.g. You have the Lewis at $643 MSRP and the Dominions at $674 MSRP). No sales etc (year round price), the LHPs are about $730 AUD directly from Lewis where as a pair of A4 Dominions are $475 AUD for the pair - that's $255 AUD / $165 USD less $ for the Hayes in Australia.
Yeah I've gone off of the Canadian MSRP, or the directly converted US MSRP when that is not available. Would be cool to eventually have different columns for each of the major regions wouldn't it...
@@DaleStone here's a question, it looks like this interference only occurs when the lever is very far in, nearly contacting the grip upon full grab, and it appears to be happening due to the length of the...bolt(? that's not a simple bolt, is it, according to the diagram earlier in the video there's an adjustment inside of that?). Do you think this could be remedied with a longer bolt(?) specifically for use by those who desire to run this "very far in" configuration or would the necessary additional length result in it contacting the handlebar grip/grip lock-on?
i love your honesty bro. by the way could you maybe try dissassembling the products that you review? i think it would make a great explanation aid. forgot to add, did you see my email about the action cam mount? ;) i resent it just in case
Would be pretty cool, but I just can't afford to take things apart at this point that I am not 100% sure will go back together. Money is tight! And sorry I'm waaaay behind on emails haha. I'll get to it, I swear... 😅
@DaleStone thanks! Once you start taking things apart, you realize how cool and intricate the mechanisms are. I feel like people are almost never aware of the insane mechanics of the products they purchase.
Great content, I really enjoy the depth you give components, its missed by the industry as a whole. With the problem you encountered, would it be the same with new vs old pads? Just wondering, since you installed used pads, and didnt bleed the brakes, the small difference could lead the a higher chance of brake "failure" or interference as you mentioned in the video.
This issue is present on the LHTs that I'm borrowing that were bleed from new with original pads, indicating it is likely a trend and not a one off. The Maxima pads were effectively brand new (~60km) and were visually the same thickness as the Lewis pads. The lever feel was also very similar to the Maxima as-is, which would add up.
@@DaleStone yep, so def an design oversight. How likely would it be that someone might end up adjusting their brakes in such a way that it comes to that extreme? Either way, it shouldnt be something customers are subject to, and I agree on your assessment... the company needs to put it out there for safety concerns/warnings.
In theory a worm screw should not be able to be turned by its gear... But realistically im assuming the lever would eventually move. The two 1.5 are indeed a perplexing choice
Love your videos, It looks like most of your riding is steep but in the wet and cool somewhere. Some descents in the American West are long and dry and hot, I wonder if those conditions and a heavier rider would change your opinion around heat dissipation. Doesnt sound like you have ever smoked a rotor or brakesets or overheated a system on a dry 5k foot descent. Im not saying I do those rides on the daily but definitely enough in the summer to appreciate the effort for heat dissipation. I enjoy a 220 rotor too where others call me crazy
It seems like they’re doing some great products, perhaps a touch slower “innovation” would prevent silly things to make it into a “finished product” such as the reach adjust stopping the lever blade or dumb tiny screws being inaccessible and becoming loose. This is why these videos are to me like a bucked of water into the hype fire that the brand is creating. I feel that they’re trying so hard that they’re not even testing much but rather just pushing products out, so when comments say that the x brand didn’t update their brake in a while, these things clearly show why. Looking forward to see the Hope Review and some more tested products in the future.
I appreciate the pace at which they're releasing new products, but as I've learned from many of my jobs, you often pay a price for that in the end. Double checking is mandatory!
@ indeed, there must be a sweet spot between Lewis quick releases of what feels like prototype brakes and Trickstuff with their 7 years or more with no changes ( let’s forget about the saint that are ancient at this point despite being great )
I really enjoyed this video, and i totally understand what you're saying about some small set screws needing to be tight, could a small amount of low strength thread locker not do the trick? I cant imagine once you get them set you would genuinely want to change it regularly? I would of thought whilst being frustrating that it would rattle from becoming loose, its probably in the optimal location for it to become loose considering its at the end of the handle bars, directly above a fork that is designed to compress and extend?
I agree that if you don't intend on selling them or letting your friends try out different settings, then you might as well just super glue them in there. I'd be hesitant to apply anything myself given the delicate nature of a 1.5mm hex.
@DaleStone but why do you have to be keeping them to use low strength loctite? Plenty of bike components have it on them? I understand what you're saying, it was more out of curiosity. Assuming its a regular grub screw with a 1.5mm allen/hex key to tighten, that would make it a M2.5mm screw, and less torque would be required with the addition of loc tite, therefore less likely to strip the threads Or am i way off the mark and you're more concerned about stripping the head of the grub screw? After all this, i do wanna say i love your content, can tell from whatever study/professional background you have you possess a greater than general understanding of the mechanical side of the brakes I've seen you do test videos on, im just a curious cat that loves answers 😂
Dale, I enjoy your videos and your in depth review process. Does Lewis clearly cloning 5 Dev's cranks change your opinion of Lewis being a stereotypical Chinese company copying established products from other companies instead of doing their own R&D? Making a second product that is a clear clone product, cements Lewis as a company ripping off other's designs.
Good question, and honestly it doesn't. Lewis has just made it crystal clear that they thrive in the morally grey zone, but I don't think they've crossed any legal red lines. It's up to individuals to form their own opinion on whether or not they are okay with these practices. Yadda yadda vote with your money... 🙂
Any ideas if the reach adjust knob is removeable? I can see there is a set screw on it in some of the views. I wonder if you can loosen that and slide it part of the way up the shaft to get around the interference issue?
It is indeed removable. I believe it may interfere with my grip in the "reach adjuster close to bar" leverage position if I let it hang off the end of the piston rod unfortunately. Haven't tried, but very tight tolerances all over!
Levarage ratio adjustmemt is something which I wish to have in my brakes, but due to way it is realised I would not feel comfortable spending so much on brakes with only one year warrant and mediocre at most spare parts availability.
Dale -when is the review coming for that Garmin Mount? The yellow looks nice. It looks really light :) - Actually - the truth is the best way to do this is to do what you have done with the O-rings. When you crash - it moves run like the the expensive alternatives......
@@DaleStone Everyone runs these fancy Garmin mounts that will likely break the flange on the base of the Garmin unit if you crash. You setup is better BUT get IMBY to give you some O rings.....
Oohhhh please tell me you've tested the vented rotors when you tested the hope brakes! I'd love to see a performance comparison between these cooling fins and the hope vented rotor!
@DaleStone Maybe! I've heard good things about them and since they're 3mm thick, they apparently bring the bite point much closer to the free stroke for a snappier and more immediate feel.
The interference should be dependent on where each individual have the leverage ratio at, as well as how the rest is setup. Obviously it should never be possible, but it won't necessarily be a problem because most people will dial in the preferred leverage ratio, and just leave it. If this go to setup is ok, then you're good. Hopefully they will adress it, so we'll see. My personal gripe is those cooling fins that are not removable and that I thought were part of the brakepad just like Shimano has done for years. It seems like you are dependent on that brakepad separation spring to be in good shape, or it will rattle like hell. What do you do when this breaks or you loose it or what ever else. It's pretty dumb to have an independent spring like that where it has to be this chonky, and this whole cooling "system" depends on it. The other part is what do you do when you want to service the pistons. I haven't seen with my own eyes what amount of room you got on offer to do anything behind that fin, so I'm a bit baffled by the whole concept. Just why.... I never expected this from the pictures I've seen prior to this review, so now I don't really know what to say. Performance wise they are most likely very good, and personally I have been waiting for this particular model to enter the market, and now I just don't know. Where can you order and how quickly can you get a hold of 6 of these springs just so you have a little stock on these for peace of mind. I at least would never just start using these brakes without some of these at hand.
Even knowing the interference was a possibility, I still would forget about double checking for it on the trail while I'm having a conversation with friends/etc. I agree that it was not an issue in my preferred setting, but needs to be impossible rather than improbable. 🙂 Piston servicing, good point. Didn't think of that!
But did you have accidental stroke readjustment when set screws were loose? Normally (depending on actual gear ratio) worm gears are self-locking, so no set screws are needed, let alone two. Seems to me it is indeed rather a remedy to sloppy lever blade tolerances
I didn't consider that but you might be right! They may have drifted at most 2-3 clicks over a 3+ hour ride. Unfortunately it's impossible to measure that with no markings on the lever, without taking and comparing photos...
10:14 I've had a lot of problems with smaller brake pad separators (such as the ones that come with galfer pads) with my TRP DHR-Evos With the 2.3mm Hope rotors I use the thinner springs rub against the outer part of the disc and make an awful noise while braking. Maybe that's also part of the reasoning behind that design.
This is exactly the reason I can’t stand this brand. The ripoff the design from Trickstuff, who have spent years engineering and developing top tier brakes, then Lewis claim to “make improvements” to them without any understanding how that will effect the brakes, nor considering why Trickstuff designed them they way they are.
If it's required by the manufacturer through clear, explicit instructions then it is done, otherwise it can only be assumed to not affect performance. Feel free to timestamp a comment I made that you believe a bleed would've solved.
Can't remember who had it on a reel but they recommended backpurging the lever as a bubble gets caught up in the resiouver cap. Made a difference, I've done a ton working as a mechanic and another mech tried it too and agreed (if it helps) great review
So a knock off chinese company designed a brake lever that doesn't work due to a large adjustment knob and you are surprised? You think they even ride MTB's at the Lewis Factory or just knock off brands to sell based on trends.
Lewis Tech did their fair share in innovation with these brake sets, though the testing part is unclear, I think it isn't fair to say that they're just a knock-off
Says someone who knock off PinkBike as his YT profile pic as if you don't have a pic to represent your unique individual identity/persona (I don't care if this is an ad hominem attack)
Would you run these brakes? Why or why not? Use code "CONFLICTOFINTEREST" for 0% off below. 👇
Can I have a 0% code and a set of intend pls? 😊
I'm waiting... 😂
I guess I'd go for Mavens.
i would definety love to try these brakes :)
🤣
It would be very interesting to try the leverage ratio adjustment..... Once the issues are resolved. Thank you for demonstrating the issue so well.
You put so much thought into your work and communicate your thoughts clearly. I really appreciate your effort. Also, it kinda looks like you shred, so right on.
Haha, thanks!
If you doubt he shreds just check out his shorts, he does ride some CRAZY shit sometimes
Like I said in your previous Lewis videos. Thanks for doing it. There's not enough credible information on the brand and you're doing a huge service.
The amount of time and research that goes into these videos is incredible. Thank you for becoming my go to source for mountain bike brake reviews as you go into all the details I want to know about!
🫡
ok i watch a lot of youtube, i mean ALOT. a lot of professional “career” youtubers from all genres. and this channel has probably the best or at least top 3 narration and verbal description of things ive seen on this platform. WOW so impressive and each time another video comes out im just as impressed as the time before. well done and keep up the production quality and extremely high quality content and dialog. thank you
Thank you, I'll do my best!
A hex head that small should be illegal.
Agreed! However, personally I’d venture as far as outlawing all allen tools/bolts and creating the official “Church of the Torx the only true God, ya’ll others are infidels!”, but that’s probably only me. 😊
I use it all the time on my drones
Perhaps see if you can find replacement bolts in a stronger grade of metal with a torx head? Might cost a few bucks but might be worth it?
As a mechanic that works on Italian machines, I couldn’t agree more.
Wasn't expecting this one from you so soon. Lovely surprise, and with the LHT still to come! These brakes are still at the top of my short list, and although that design flaw is something that probably won't affect me, it's definitely good to know. Your reviews are such a valuable resource. Keep up the great work!
Excellent video Dale!
We’ll personally be updating our images on our store to inform customers to check their ratio setting for interference with the lever reach adjustment. Great job discovering that!
I’m also going to see if just makes sense for us to pay out of pocket to include a nice hex key for the set screws. I’ll be taking the my Lewis reps to see if we can get a revision of the LHP with the torx set screw of the LHT. I agree the two adjustment screws can be annoying (we do reference in our site it’s not fully tool-less functionality)
Thanks for all your hard work!
- Bryce at Atlus Bikes
That's awesome Bryce, hopefully your message (and this video) help Lewis consider a running change to this new design. Thanks for keeping customer safety your top priority! 🙌
@@DaleStone ordering bulk Tekton ball end Allen keys as we speak haha.
A few dollars of mine is worth everyone’s safety and also worth not stripping out tiny hex screws, that’s the worst!
I’ll message my rep tonight and share your video and issues you’ve experienced. I 100% agree that the LHT has better ratio adjustment. Most bike tools will have the torx and not that tiny hex key. Even if they did no way you’re fitting the tool between the handle and reservoir
@@BK_BT You get it. I appreciate how constructive and wholesome the Lewis comment sections tend to be in comparison to dealers, outlets and riders trying to justify their purchases from the big two...
@@DaleStone I guess we cannot win them all haha. The comments are quite great and constructive which I agree is very nice and also very different haha.
Only everyone benefits from being understanding, civil and just nice to each other. Hate and ego never got anyone anything.
Keep doing the good work man!
Gonna weight for the different colours .
Awesome work dale. Happy to hear you advocating transparency and safety for consumers much like GN.
Its good to hear that there is a tangeable difference in adjustments at the lever and make me wonder about mixing and matching various caliper and levers, and if theres a objective way to determine how much performance is derived from either end.
You know i just bought the Black Friday special trinety and i blame you and these videos for it😂 we need more unpayed honest product reviews like yours.
Hell yeah brother, you're going to love em! 🤘
@@DaleStone it’s crazy to be honest like you put me on to those brakes even though their made like 4 hours away from where i live. Thanks though. Should be here tomorrow super stoked on them. Cheers 🍻
Thanks for testing it. I am a bit of a brake nerd, with various hybrid systems tested, but that interference is totally unacceptable, so is the play on the lever. Quality had it price it seems. Great tech vid. Subscribed.
Once you dial in your settings thankfully neither are an issue, but I do hope they are both improved upon next time! 🙂
Surely reducing the knob diameter would allow the lever to not make contact or do what Hope does and use an external pin or grub screw . That knob is too big (cough) .
A smaller knob would indeed be more convenient. 😁
Don't get me wrong, when I see a Dale Stone brake review I click immediately and bask in its glory..
But... when is the Dominion review going to be finalised?! The TBC on the comparison table is irking my inner completionist! 😂
Haha, rest assured that it bothers me too. But there are only so many hours in a day! 🫠
Really spectacular review. Top-drawer, thanks so much!
Ok... I'll ask the question that always jumps in my brain when I see a Lewis review. Can you do the Ali express copy of the truck stuff next? III PRO E4s. Some other reviews suggesting they are weirdly good for a fifth of the price of a mid tier brake. Love the vids bud.
One of my friends rides some of the gnarliest moves around with his IIIPros. Would be epic to test them out next year!
fellow brake snob here, PLEASE try to get your hands on a set of Radic Performance Kahas in for review and evaluation. ive been eyeing these for a long time but there is limited online consumer info in north america and i only have seen one or two videos on them. i feel like they are WAY up your alley and id love to see a review.
Once they're in my budget, or enough people reach out and ask them to send over a set, it'll be my top priority. 🫡
Another great video Dale. Also wondering if you'll review a set of Hope Tech 4 V4 or E4s?
I addressed this in a previous brake video: yes. 🙂
@@DaleStone Nice! Looking forward to it.
Awesome video once again!
Imagine Intends in RAW ! 11/10
Another excellent production! Thank you! The existing mtb review channels/websites should count their blessings.
Do you think a Formula Cura 4 review is possible? And I think you mentioned TRP DHRs are too linear but we'd be stoked if you ever decided to make a video
I suspect TRP will beat me to the punch with a new brake, which I'll be on top of haha. Would like to get to formulas eventually! 🙂
i donno about that interference problem, but i never set up my brakes to come so close to the bar. but good find non the less.
I usually don't either haha, but wanted to test everything!
You're my official source for info on the brand now... 😅 thanks for updating us!
My original set and second set of LH4 are still on duty, I'm (not so) glad to report they experienced road salt of Quebec roads and -7°c
I clear my bike with fresh water when I come home but yeah, hate that.
A bit less response but they work, I must specify I replaced the original fluid with Maxima mineral oil.
Good work on the review.
How does your prefered leverage ratio on the LHP compare to the LH4 lever?
I don't remember you mentioning how they compare to LH4s or did I miss it.
Thanks!
Good question, I did forget to include that. I'd say the LH4 feels very similar to the LHP in my least favourite position, the one I discussed first and compared to a light lever SRAM brake, and maybe even with a bit less power too. Still very usable, but I much prefer the opposite setting. 🙂
@@DaleStone Good to know. I must be one of the few that actually like the feel of code brakes 😄
@mongoz56 more for your then! 😂
Best brake reviews out there 👍 Although I don't 100% agree with the choice to use the Trickstuff pads with these brakes as it might not be an entirely accurate depiction of what they would be like for the average person who would buy these.
Although on the other hand I could see it being pretty likely that someone who buys these brakes would eventually buy those pads anyway when the original ones wear.
Oh also watch out for cherry picked examples when receiving items directly from manufacturers.
I see where you're coming from, but I felt that it was more important to have the most accurate comparison possible to the Maximas (which I'll be uploading before Christmas). With more time I would've definitely liked to test both pad options! 🙂
phew. This is like going to a college lecture where the professor provides a dense reading of a subject for 30 minutes then leaves for his next class leaving the students deluged with data hoping they don't get too many questions of the material covered at the end of term exams
Perfect, as intended. 😈
@@DaleStone Brakes
; Formula cura 4 because they have the biggest brake pads, Beringer Br4VE just awesome.
ily dale i live in the same area as you you make the best videos and now you got me hyped about these brakes. Quick question, how much more powerful are these brakes than sram code r's? I ride stuff like seymour and whister and was wondering if these provide a big enough performance boost
"powerful" doesn't mean much without context, but I'd definitely prefer these over anything from Shimano or SRAM.
The price difference quoted between brakes is surprising between regions (e.g. You have the Lewis at $643 MSRP and the Dominions at $674 MSRP). No sales etc (year round price), the LHPs are about $730 AUD directly from Lewis where as a pair of A4 Dominions are $475 AUD for the pair - that's $255 AUD / $165 USD less $ for the Hayes in Australia.
Yeah I've gone off of the Canadian MSRP, or the directly converted US MSRP when that is not available. Would be cool to eventually have different columns for each of the major regions wouldn't it...
I missed this release! Watching now, eager to see the findings!
You didn't miss anything, it's only 3 hours old! 😉
But also @DaleStone if you also have the LHT brakes, PLEASE do an LHT lever + U4 caliper combination test at some point.
Once I get through all of the OEM brakes I'd love to mix and match, but that might take a solid year or two... 🥲
@@DaleStone hey, it lines up the content for the future! Gives you some job security 😉
@@DaleStone here's a question, it looks like this interference only occurs when the lever is very far in, nearly contacting the grip upon full grab, and it appears to be happening due to the length of the...bolt(? that's not a simple bolt, is it, according to the diagram earlier in the video there's an adjustment inside of that?). Do you think this could be remedied with a longer bolt(?) specifically for use by those who desire to run this "very far in" configuration or would the necessary additional length result in it contacting the handlebar grip/grip lock-on?
I wonder if we'll ever see Lewis supporting and sponsoring events around the mtb world.
i love your honesty bro. by the way could you maybe try dissassembling the products that you review? i think it would make a great explanation aid.
forgot to add, did you see my email about the action cam mount? ;)
i resent it just in case
Would be pretty cool, but I just can't afford to take things apart at this point that I am not 100% sure will go back together. Money is tight!
And sorry I'm waaaay behind on emails haha. I'll get to it, I swear... 😅
@DaleStone thanks!
Once you start taking things apart, you realize how cool and intricate the mechanisms are. I feel like people are almost never aware of the insane mechanics of the products they purchase.
Great content, I really enjoy the depth you give components, its missed by the industry as a whole. With the problem you encountered, would it be the same with new vs old pads? Just wondering, since you installed used pads, and didnt bleed the brakes, the small difference could lead the a higher chance of brake "failure" or interference as you mentioned in the video.
This issue is present on the LHTs that I'm borrowing that were bleed from new with original pads, indicating it is likely a trend and not a one off. The Maxima pads were effectively brand new (~60km) and were visually the same thickness as the Lewis pads. The lever feel was also very similar to the Maxima as-is, which would add up.
@@DaleStone yep, so def an design oversight. How likely would it be that someone might end up adjusting their brakes in such a way that it comes to that extreme? Either way, it shouldnt be something customers are subject to, and I agree on your assessment... the company needs to put it out there for safety concerns/warnings.
@CristianBurr if you choose a position at random, I'd guess around 10%
In theory a worm screw should not be able to be turned by its gear... But realistically im assuming the lever would eventually move. The two 1.5 are indeed a perplexing choice
I think the vibration and acceleration loading is complex enough that it probably will eventually drift. But who knows, haha.
Would be interesting to test if you could remove the cooling fins and run the thicker V4 Hope rotors.
It would be neat for sure, but I suspect the "rotor cutout" is a bit too small. I'll measure it sometime perhaps...
Love your videos, It looks like most of your riding is steep but in the wet and cool somewhere. Some descents in the American West are long and dry and hot, I wonder if those conditions and a heavier rider would change your opinion around heat dissipation. Doesnt sound like you have ever smoked a rotor or brakesets or overheated a system on a dry 5k foot descent. Im not saying I do those rides on the daily but definitely enough in the summer to appreciate the effort for heat dissipation. I enjoy a 220 rotor too where others call me crazy
I've definitely never done that before, and I've done my handful of 5000 foot summer descents too, haha. One of the pros to being super light I guess!
Not sure how much energy would be transferred to those cooling fins without thermal paste, but my guess is, not much
That's probably true too!
It seems like they’re doing some great products, perhaps a touch slower “innovation” would prevent silly things to make it into a “finished product” such as the reach adjust stopping the lever blade or dumb tiny screws being inaccessible and becoming loose.
This is why these videos are to me like a bucked of water into the hype fire that the brand is creating. I feel that they’re trying so hard that they’re not even testing much but rather just pushing products out, so when comments say that the x brand didn’t update their brake in a while, these things clearly show why.
Looking forward to see the Hope Review and some more tested products in the future.
I appreciate the pace at which they're releasing new products, but as I've learned from many of my jobs, you often pay a price for that in the end. Double checking is mandatory!
@ indeed, there must be a sweet spot between Lewis quick releases of what feels like prototype brakes and Trickstuff with their 7 years or more with no changes ( let’s forget about the saint that are ancient at this point despite being great )
I really enjoyed this video, and i totally understand what you're saying about some small set screws needing to be tight, could a small amount of low strength thread locker not do the trick? I cant imagine once you get them set you would genuinely want to change it regularly?
I would of thought whilst being frustrating that it would rattle from becoming loose, its probably in the optimal location for it to become loose considering its at the end of the handle bars, directly above a fork that is designed to compress and extend?
I agree that if you don't intend on selling them or letting your friends try out different settings, then you might as well just super glue them in there. I'd be hesitant to apply anything myself given the delicate nature of a 1.5mm hex.
@DaleStone but why do you have to be keeping them to use low strength loctite? Plenty of bike components have it on them?
I understand what you're saying, it was more out of curiosity. Assuming its a regular grub screw with a 1.5mm allen/hex key to tighten, that would make it a M2.5mm screw, and less torque would be required with the addition of loc tite, therefore less likely to strip the threads
Or am i way off the mark and you're more concerned about stripping the head of the grub screw?
After all this, i do wanna say i love your content, can tell from whatever study/professional background you have you possess a greater than general understanding of the mechanical side of the brakes I've seen you do test videos on, im just a curious cat that loves answers 😂
@@kizbish I could barely tighten and loosen them as-is without fearing stripping the heads haha. I don't want any more resistance!
@DaleStone yeah thats fair, suppose for all their nice CNC work they failed to tap the through holes as well as they should of!
Dale, I enjoy your videos and your in depth review process. Does Lewis clearly cloning 5 Dev's cranks change your opinion of Lewis being a stereotypical Chinese company copying established products from other companies instead of doing their own R&D? Making a second product that is a clear clone product, cements Lewis as a company ripping off other's designs.
Oh that's not a great look if true..
@IBCMTB posted on Lewis bike Instagram. I tried to post the link, but RUclips isn't cooperating.
Fun comment from 5Dev in the comments.
Good question, and honestly it doesn't. Lewis has just made it crystal clear that they thrive in the morally grey zone, but I don't think they've crossed any legal red lines. It's up to individuals to form their own opinion on whether or not they are okay with these practices. Yadda yadda vote with your money... 🙂
Any ideas if the reach adjust knob is removeable? I can see there is a set screw on it in some of the views. I wonder if you can loosen that and slide it part of the way up the shaft to get around the interference issue?
It is indeed removable. I believe it may interfere with my grip in the "reach adjuster close to bar" leverage position if I let it hang off the end of the piston rod unfortunately. Haven't tried, but very tight tolerances all over!
Ive been so hyped for this review! (first?)
Levarage ratio adjustmemt is something which I wish to have in my brakes, but due to way it is realised I would not feel comfortable spending so much on brakes with only one year warrant and mediocre at most spare parts availability.
if cam zink rides this brakes on his bike to compete rampage i think its good enough for everyone lol!
It's a good test for sure, but not for the XC rider in the cornfields of Iowa. 😆
@@DaleStone if he is 300 pounds he will hahaha
Any chance to finally get the full review for the Hayes Dominion A4's?
Have you seen how quickly I've been cranking out these reviews? 😆
This is like totes awesomeballs!!! 🤟🏻😎👍🏻
27:46 50 freedoms more expensive rahhh
Dale -when is the review coming for that Garmin Mount? The yellow looks nice. It looks really light :) - Actually - the truth is the best way to do this is to do what you have done with the O-rings. When you crash - it moves run like the the expensive alternatives......
You mean my fancy yellow zip ties? Haha, nothing special there, but they do indeed spin around the bar rather than breaking off thankfully! 🙂
@@DaleStone Everyone runs these fancy Garmin mounts that will likely break the flange on the base of the Garmin unit if you crash. You setup is better BUT get IMBY to give you some O rings.....
Oohhhh please tell me you've tested the vented rotors when you tested the hope brakes! I'd love to see a performance comparison between these cooling fins and the hope vented rotor!
haha I'm still on the fence about those rotors. I'll have to mortgage one of my bikes to afford them! 🤪
@DaleStone Maybe! I've heard good things about them and since they're 3mm thick, they apparently bring the bite point much closer to the free stroke for a snappier and more immediate feel.
The interference should be dependent on where each individual have the leverage ratio at, as well as how the rest is setup. Obviously it should never be possible, but it won't necessarily be a problem because most people will dial in the preferred leverage ratio, and just leave it. If this go to setup is ok, then you're good. Hopefully they will adress it, so we'll see.
My personal gripe is those cooling fins that are not removable and that I thought were part of the brakepad just like Shimano has done for years. It seems like you are dependent on that brakepad separation spring to be in good shape, or it will rattle like hell. What do you do when this breaks or you loose it or what ever else. It's pretty dumb to have an independent spring like that where it has to be this chonky, and this whole cooling "system" depends on it.
The other part is what do you do when you want to service the pistons. I haven't seen with my own eyes what amount of room you got on offer to do anything behind that fin, so I'm a bit baffled by the whole concept. Just why....
I never expected this from the pictures I've seen prior to this review, so now I don't really know what to say. Performance wise they are most likely very good, and personally I have been waiting for this particular model to enter the market, and now I just don't know.
Where can you order and how quickly can you get a hold of 6 of these springs just so you have a little stock on these for peace of mind. I at least would never just start using these brakes without some of these at hand.
Even knowing the interference was a possibility, I still would forget about double checking for it on the trail while I'm having a conversation with friends/etc. I agree that it was not an issue in my preferred setting, but needs to be impossible rather than improbable. 🙂
Piston servicing, good point. Didn't think of that!
But did you have accidental stroke readjustment when set screws were loose? Normally (depending on actual gear ratio) worm gears are self-locking, so no set screws are needed, let alone two. Seems to me it is indeed rather a remedy to sloppy lever blade tolerances
I didn't consider that but you might be right! They may have drifted at most 2-3 clicks over a 3+ hour ride. Unfortunately it's impossible to measure that with no markings on the lever, without taking and comparing photos...
@@DaleStone also it seems from the videos the mechanism has a lot of backlash - could this equate for those 2-3 clicks?
@@feedbackzaloop It could for sure. I also could very well have been zero clicks haha. Hard to tell!
Looks like it would be a easy design fix for that safety issue,
As a running change yes, as a retroactive fix I'm not so sure.
the fins are probably already overkill for cooling but I wonder if thermal paste between pad and fin makes a difference on a big descend
It could! Probably makes a bigger difference contaminating your pads though. 🫠
I wonder if with the heatsinks removed if you could use the hope vented rotors
I think the cutout for the rotor is still slightly too narrow, but I also haven't measured. Would be rad if so.
They won't fit in the lh4 calipers. Clips the rivet
will you be returning to the Hayes to review them again?
I will.
Are these better than maguras mt5/mt7?
In most ways yes, in some ways no. 🫡
Any reason why your list doesn't have TRP DHR Evo yet?
Yes, I haven't enjoyed them in the parking lot, so I haven't prioritized buying a set with my money. Too weak. 🙂
How about Magura mt7 with different levers.
First I need to get through the OEM combos, then I'm keen to get freaky. 🧠
Omg yes
10:14 I've had a lot of problems with smaller brake pad separators (such as the ones that come with galfer pads) with my TRP DHR-Evos
With the 2.3mm Hope rotors I use the thinner springs rub against the outer part of the disc and make an awful noise while braking. Maybe that's also part of the reasoning behind that design.
This is exactly the reason I can’t stand this brand. The ripoff the design from Trickstuff, who have spent years engineering and developing top tier brakes, then Lewis claim to “make improvements” to them without any understanding how that will effect the brakes, nor considering why Trickstuff designed them they way they are.
To be fair, the bite point adjustment works very well. But yeah, welcome to capitalism.
No chance id run these brakes.
Would be ironic if a western company copied them .
...and added new features. 🧠
How come bleeding a brake before testing is not a "Controlling Variable"?
If it's required by the manufacturer through clear, explicit instructions then it is done, otherwise it can only be assumed to not affect performance. Feel free to timestamp a comment I made that you believe a bleed would've solved.
Can't remember who had it on a reel but they recommended backpurging the lever as a bubble gets caught up in the resiouver cap. Made a difference, I've done a ton working as a mechanic and another mech tried it too and agreed (if it helps) great review
Meh….no thanks. Seems more trouble than they’re worth
Having dealt with the trouble, I'd disagree haha
A VERY HARD PASS. For this to be a 1st choice over all the multiple manufacturers of proven brakes...no FN way.
Gonna need a citation that shows "proven" brakes are better. I'll wait.
Don't support intellectual property sneak thieves.
🚨 uneducated comment alert 🚨
So a knock off chinese company designed a brake lever that doesn't work due to a large adjustment knob and you are surprised? You think they even ride MTB's at the Lewis Factory or just knock off brands to sell based on trends.
Lewis Tech did their fair share in innovation with these brake sets, though the testing part is unclear, I think it isn't fair to say that they're just a knock-off
I think you didn't watch my history video. 🚨
Says someone who knock off PinkBike as his YT profile pic as if you don't have a pic to represent your unique individual identity/persona (I don't care if this is an ad hominem attack)