On the Colnago TT1 and the Pinarello Bolide, they covered over the “TT” on the Continental GP5000 TT-R. Also seen uncovered on the Merida. Conti making a TT version of the ST-R?
Interesting to see the different size tires on the Ineos bikes. I remember Conti selling the Force/Attack tires as a pair back in the day. I believe it was a 19mm on the front and 21 on the rear of course at 120psi! Askk Dan, he will remember.
The first version was a 22/23mm combo, the second was already 23/25mm. I was running the 18mm Grand Prix as long as it was available (25 years ago)... Today it is even hard to get 23mm tires - Pirelli kicked recently out its P Zero Road 24mm tire. On my recently bought DT Swiss ARC Dicut 62 I put on a Supersonic 20mm tire (the version which on a 13C rim is really 20mm wide, I got some as NOS tires), it becomes 21,75mm wide on that 17C rim, and gives the wheel a lenticular shape.
woah 3D printed water bottle! 3-D...3 Dimentions. This is as cool as 3-D cinema, 3-D glasses. 3-D video games. Did you get that? Its Three Dee!!!!! WOW!!!
So I'm guessing Ollie's invite from each team was something like this: "Ollie, you're not going to be disappointed with our time trial bikes. You can believe that each bike is really, really, really aero. Like super aero. Like blow your mind aero. And afterwards, when you have a coffee, you'll be crying into your latte over all the aero you just saw. And we'll understand. It's an aero thing."
Hi Team, Excellent content from the UAE Tour, I really enjoyed it. I have a crazy ultra-cycling challenge idea for Ollie, Mallorca 312, Tour du Mont Blanc & Tour des Stations, all in the 2023 season. I would go so far as to even double dare him.... Could be some cool content...
Hi Ollie, another Great Video. Can I ask if the cut outs in the rear disc wheels have any impact on the areo gains? Do they maybe have a removable cover🚴♀️👍🚴♂️😁🚴
thanks for getting in there, wow there all superb machines, your right to after marvelling at the bikes then the details start to stand out ........awesome.
Ollie seems more relaxed now that he has Alex doing the prep for the Tech Show. It gives him more time to strike up coffee-shop conversations about aero. 😀
The question is, how long did Ollie take to feature the time trial bikes. How much aero was his commentary performance? Vocal drag? ID necklace drag? Flipped cap drag? Bike-side crouching mode drag?
I think Ineos uses 11speed, as this was the last groupset where you could get a TT-like cassette with 11-23 (Miche even offers a 11-21 11speed cassette), with 12speed is even not possible to get a 11-25 cassette, they are only available with unbelievable big sprockets on. The bottle cage on the canyon looks more like one for the Elite Crone CX aero bottle (I first wanted to get one to replace a lost Specialized Air Virtue bottle, with is attached to my Giant Cadex so low on the down tube it works like a fairing, as it nearly touches the seat tube, but with a black bottle you can never be sure it is really clean, as mold has the same colour). Deep fork blades are not necessarily an advantage, on my Giant Cadex I have an Oval Concepts Jetstream fork, which reacts in a way to crosswinds it is impossible to run a DT Swiss ARC Dicut 80 frontwheel, it feels like someone is riding beside you and keeps moving your handlebar (my weight is only 140 lbs). The most interesting thing on the merida TT bike is the kind of extender for the rear derailleur, it is not attached directly to the frame.
Hey Ollie, I'm sure you asked your self this question; is there a reason ( new aero bar trick to go faster ) to use the old 2.2 round extensions on many of the UAE TT bikes?
Most like sponsor obligations. Ineos has some serious R and D funding behind them so they obviously get away with doing janky stuff like they are here. The other teams are more likely strapped and can't get away with doing "optimal" gains.
What was the weight saving for a Matt frame finish? Sounded like you said hundreds of grams but that would be a significant chunk of the whole frame weight. Did I mishear?
Wonder why UAE blacked out the ‘S’ on the S TR’s. I wonder if they are the S version…. Or if there’s a new version that will be released (around Paris Roubaix maybe). Any clues?
Hi Ollie, your passions are bikes and chemistry, mine are bikes and aerodynamics. I can't help noticing that the wheels are fatter than the tyres (more than usually seen on road stage wheels) and that the thickest bit of the rim is nearer the hub suggesting to me that they are more optimised for the trailing rim (ie at the wheel frame interaction). On the pinarellos the wavy inner rim edge (nearest the hub) is interesting, I wonder what effect they have found there, and the wavy trailing edges of the tri spokes too. The other thing, if a matt finish saves weight, how much does an ice finish cost in weight? It is nice to have another nerd looking at these things.
Apparently reduces the stalling effect caused by cross-winds, that makes aero wheels feel like they are being bumped off line. There is a GCN Tech video that talks about it somewhere I think.
It looks like they have covered up the tire designation - I wonder if it's a prototype tire as you wouldn't think there would be any need to go to the trouble to cover up a regular S-TR or TT tire's markings.
Those Colnago TT bikes look like they’re straight out of Tron. Mad tech. I wonder how long before the UCI crack down on the bottle cage and bottle being used as a fairing. You can see the Canyon missed out on this trick!
Good for roughly 70Kph at 90 RPM, so probably not used on anything but fast descents as I doubt many riders are going to see that velocity on anything but the very hardest finishing flat-terrain sprints. It would likely be an impractically high gear ratio otherwise. My guess is around (600-700)W minimally at pro peloton speeds.
@@GCNuser123 good point, great presentation once again 🥂 TT bikes are getting WILD especially cool to see the rules change for larger sizes and tube shape restrictions change as well.
there is no shimano di2 dura ace 12speed groupset for TT bikes, as far as I know, right? you can connect the (old) 11speed shifters to the new 12speed battery and it would work with the 12 speed derailleurs, but it wouldn't be wireless, so not much point to it, except for the 1 extra gear
so if the Canyon Speedmax is illigal with the big botom bracket used in Thriathlons, why then can UAE use it with the bottle system, it has the same aero effect
Looks like the custom 3d printed cockpits have either been axed because they dont abide by the "being commercially available" rule or the budget caps dobt allow teams to be soending £14,000 on handlebars for every riders tt bike now
So... Cervelo developed an aero bottle years ago for the P4. It was immediately banned by the UCI. How did Colnago legally bring back virtually the same concept?
@@benji1681 Not really how the bike industry works as there is always innovation happening. I have a 2020 and love it, but I’d really like to get a disc brake version to take advantage of the newer carbon wheel tech out there in this area.
@@ElevationEveryWeekend I’ve got a 2018 model and although the brakes are a bit crap there’s genuinely nothing more I’d want from it the only thing holding it back is it’s rider lol
@@benji1681 yeah, the Trinity rim brakes aren’t great, but I also don’t really care about the brake performance. For me it’s the ability to ride wider tubeless wheels and tires and not have to worry about a carbon brake track on a rim brake bike.
@@metinanilaydin I personally have not tried it but it is not an odd, risky thing that I'd be afraid to try (such as experimenting with wide range cassettes + double chainring setups that test the capacity of rear derailleurs). I would like to see GCN Tech revise their response.
Don't think so, I reckon the seat tube looks deeper in the video because of the angle and the top tube is sloped just because it is a small size frame.
@@fabriziomonopoli5074 ah okay. Yes you’re probably right. I have one and reckon there’s a new one on the way because as a consumer, you can’t get them anymore.
SWorks TT bike!! Not available for sale anywhere!! Effectively discontinued fir retsil customers. Can't understand how they are still allowed to race it still at the pro level.
All bikes look wicked fast from a pure aerodynamic basics perspective they all seem very well designed. This is in spite of "aerodynamics specialist" Tom Boonen arguing that the Colnago bike is 2 kph slower than the Cervelo and Specialized. Go figure, the UAE boys would have gone 58 kph at the TTT and demolished the competition. Sarcasm aside, I am glad someone told him to STFU on stuff he does not what he is talking about.
I love TT bikes the science is fascinating. Don't think that I would ride one in the wild though. It makes you look a bit spesh. Saying that with an aero snood your anom and could be anyone 😂
when modern-day carbon fiber road bikes couldn't get any stupider looking, well... the bike industry blows THAT impossibility out of the water i'm thinking of taking up cigarette smoking
The Specialized by far looks the most un-aero out of the bunch. The gaps between frame and wheels are ginormous! Maybe they will make it up with their hideous new helmets.
What bit of TT tech has caught your eye? 👀
That intergrated bottle was cool
the Club cracker-wide rear tire on the Pinarello
I just appreciate being loved, even if I am just a UCI class 1 little!
On the Colnago TT1 and the Pinarello Bolide, they covered over the “TT” on the Continental GP5000 TT-R. Also seen uncovered on the Merida. Conti making a TT version of the ST-R?
The Colnago is razor sharp. Seems like their goal was to have the highest % of frame sections horizontal.
Ollie loves us, and we love Ollie for all the nerdy stuff he brings in every video :D
Ollie has your back when it comes to nerdy tech 🙌
Lay of the jazz ,brother
Interesting to see the different size tires on the Ineos bikes. I remember Conti selling the Force/Attack tires as a pair back in the day. I believe it was a 19mm on the front and 21 on the rear of course at 120psi! Askk Dan, he will remember.
Ah dan is a 18mm man! 😂
The first version was a 22/23mm combo, the second was already 23/25mm. I was running the 18mm Grand Prix as long as it was available (25 years ago)... Today it is even hard to get 23mm tires - Pirelli kicked recently out its P Zero Road 24mm tire. On my recently bought DT Swiss ARC Dicut 62 I put on a Supersonic 20mm tire (the version which on a 13C rim is really 20mm wide, I got some as NOS tires), it becomes 21,75mm wide on that 17C rim, and gives the wheel a lenticular shape.
Great vid Ollie.. amazing new innovations..always enjoy watching your enthusiasm it’s contagious 🤩👍🏅🚴
What has Ollie's nerdy enthusiasm fired you up to do? 👀
That Colnago is certainly super tasty!
It's incredible, isn't it!
Just left watching the weekly tech show for this….. I know I won’t be disappointed 😃😍
We hope you headed back to the tech show after? 👀
@GCN Tech I just did since my comment here got mentioned on this week's tech show 🤣🤣👍🏻
That Colnago TT1 is from the future!
woah 3D printed water bottle! 3-D...3 Dimentions. This is as cool as 3-D cinema, 3-D glasses. 3-D video games. Did you get that? Its Three Dee!!!!! WOW!!!
So I'm guessing Ollie's invite from each team was something like this: "Ollie, you're not going to be disappointed with our time trial bikes. You can believe that each bike is really, really, really aero. Like super aero. Like blow your mind aero. And afterwards, when you have a coffee, you'll be crying into your latte over all the aero you just saw. And we'll understand. It's an aero thing."
Hi Team,
Excellent content from the UAE Tour, I really enjoyed it.
I have a crazy ultra-cycling challenge idea for Ollie, Mallorca 312, Tour du Mont Blanc & Tour des Stations, all in the 2023 season. I would go so far as to even double dare him.... Could be some cool content...
Those Colnagos look rapid😍
Remember Ollie's budget TT series? Ollie should compare that bikes performance to these beasts
Hahaha great idea! How about pro on the budget bike and Ollie on a pro bike? 👀
@@gcntech now that's a video idea!
Hi Ollie, another Great Video. Can I ask if the cut outs in the rear disc wheels have any impact on the areo gains? Do they maybe have a removable cover🚴♀️👍🚴♂️😁🚴
They do the taping thing on the holes
That's why Manon is in the studio, so that Ollie can go about touching peoples chain.
what is hidden with the marker on the gp5000? something new to come?
I'm loving this. Up the shiv vid pls.
curious what the black sharpie is hiding on the GP 5000s @3:02
Interesting to see the pros using skateboard deck tape on the Pinarello base bar and aero bars.
And any use of electrical tape is a hack, or at least a real-world hack and that needs to be a category. 😀
thanks for getting in there, wow there all superb machines, your right to after marvelling at the bikes then the details start to stand out ........awesome.
Holy crap. The top tubes on the colnagos are razor thin.
Try sitting on those, dear GCN presenters.
amazing ! is it "safetywalk" hand grip on pinarello aerobar please
Ollie is really growing on me. It's likely me, but it seems the entire team is a lot more relaxed.
Ollie seems more relaxed now that he has Alex doing the prep for the Tech Show. It gives him more time to strike up coffee-shop conversations about aero. 😀
We are cool as cucumbers her at GCN tech! 😎 Who wouldn't be with such a great team!
Another great vid,could anyone tell me how much these current TT machines weigh with the wider tyre set up please 😊
The question is, how long did Ollie take to feature the time trial bikes. How much aero was his commentary performance? Vocal drag? ID necklace drag? Flipped cap drag? Bike-side crouching mode drag?
Don't forget big hair drag! 😂
Hows your mate papa eldred? 😊
@@PhiyackYuh haven't watched in a while, videos are too long and predictable [euphemism for boring, I've discovered Luis Scott recently!
I think Ineos uses 11speed, as this was the last groupset where you could get a TT-like cassette with 11-23 (Miche even offers a 11-21 11speed cassette), with 12speed is even not possible to get a 11-25 cassette, they are only available with unbelievable big sprockets on.
The bottle cage on the canyon looks more like one for the Elite Crone CX aero bottle (I first wanted to get one to replace a lost Specialized Air Virtue bottle, with is attached to my Giant Cadex so low on the down tube it works like a fairing, as it nearly touches the seat tube, but with a black bottle you can never be sure it is really clean, as mold has the same colour). Deep fork blades are not necessarily an advantage, on my Giant Cadex I have an Oval Concepts Jetstream fork, which reacts in a way to crosswinds it is impossible to run a DT Swiss ARC Dicut 80 frontwheel, it feels like someone is riding beside you and keeps moving your handlebar (my weight is only 140 lbs).
The most interesting thing on the merida TT bike is the kind of extender for the rear derailleur, it is not attached directly to the frame.
I could watch Ollie talking TT details all day long
Don't temp him!!! 😂
@@gcntech I could not. After 4 hours tops I'm always off shopping bikes I can neither afford nor have any use for
Hey Ollie, I'm sure you asked your self this question; is there a reason ( new aero bar trick to go faster ) to use the old 2.2 round extensions on many of the UAE TT bikes?
Thanks Ollie - very interesting
If UAE are sponsored by conti why have they blacked out the model name? New unreleased tire or something purely for the pro teams?
Looks like we are going to have to wait to find out 👀
Just wondering about the Crank Length. Are they running 172.5 or have they gone shorter??
shouldn't that be individual to the rider or at least the overall frame size catergory (if UCI doesn't allow individual crank lengths)?
Very cool stuff.
THE COOLEST! We love a bit of TT tech
Movistar obviously on 28mm tires because of Hookless internal width of the Zipp wheels. But else pretty spot on!
How come more riders aren't on 1x for the TT? Fear of dropping a chainring? How often do they actually shift the front?
Hopefully just once per trial, but dont they put weird jogs and roundabouts in TTs more nowadays?
Most like sponsor obligations. Ineos has some serious R and D funding behind them so they obviously get away with doing janky stuff like they are here. The other teams are more likely strapped and can't get away with doing "optimal" gains.
Ya os pasa de todo, parecéis youtubers de verdad!!😂
What was the weight saving for a Matt frame finish? Sounded like you said hundreds of grams but that would be a significant chunk of the whole frame weight. Did I mishear?
Gorgeous bikes.
How much would these cost ?
Ollie wants a 3D printed plush Remco Evenepoel bike to cuddle.
Well then he is not the only one
Odd that Cervélo has the mono riser on the Tt bars when they have gone the opposite direction with their road stems?
Wonder why UAE blacked out the ‘S’ on the S TR’s. I wonder if they are the S version…. Or if there’s a new version that will be released (around Paris Roubaix maybe). Any clues?
Looks like we’re getting 2 new GP5000’s. TT TR and AS ( All season)
Bling* impressed? Yes!
Team Ineos Pinarello Bolide F has TRP Spyre rear brake caliper because of old-school rear brake lever. Sounds interesting.
Why is part of the Continental tyre logo blacked out?
Maybe a TT model that's not yet released
Hi Ollie, your passions are bikes and chemistry, mine are bikes and aerodynamics.
I can't help noticing that the wheels are fatter than the tyres (more than usually seen on road stage wheels) and that the thickest bit of the rim is nearer the hub suggesting to me that they are more optimised for the trailing rim (ie at the wheel frame interaction). On the pinarellos the wavy inner rim edge (nearest the hub) is interesting, I wonder what effect they have found there, and the wavy trailing edges of the tri spokes too.
The other thing, if a matt finish saves weight, how much does an ice finish cost in weight?
It is nice to have another nerd looking at these things.
Apparently reduces the stalling effect caused by cross-winds, that makes aero wheels feel like they are being bumped off line. There is a GCN Tech video that talks about it somewhere I think.
1000th like great video!
What is the black patch on the Colnago's tyres?
It looks like they have covered up the tire designation - I wonder if it's a prototype tire as you wouldn't think there would be any need to go to the trouble to cover up a regular S-TR or TT tire's markings.
Mentioning tire width would be nice...Also at 3:03: what are they hiding on the tire?
Those Colnago TT bikes look like they’re straight out of Tron. Mad tech. I wonder how long before the UCI crack down on the bottle cage and bottle being used as a fairing. You can see the Canyon missed out on this trick!
yeah, that's really really clever, that detail can make a huge difference
They banned the same concept used on Cervelo P4s years ago...
Why are frames so different between TT bikes?
The canyon does not have "standard" bottles, it has Elite aero bottles
Hey Ollie! The correct pronunciation of the Pinarello TT bike is "Bòlide" and not "Bolìde" 😉
What power output do u need to get 58-11 tooth to a cadence of 90rpm?
A lot!
Depends how steep of a hill you're going down.
Good for roughly 70Kph at 90 RPM, so probably not used on anything but fast descents as I doubt many riders are going to see that velocity on anything but the very hardest finishing flat-terrain sprints. It would likely be an impractically high gear ratio otherwise. My guess is around (600-700)W minimally at pro peloton speeds.
ty ollie
Bikes of dreams.
Still its a mystery for me, what the point of disc brakes on TT bike? do they brake a lot?
I think the fact some elite teams aren’t using the latest customized tech shows there isn’t much ROI with these upgrades.
5:58 that’s a Elite Crono cage not a standard bottle Olie 😉
by standard, i mean it’s not unique to the bike. I have the same chrono cage on the canyon!
@@GCNuser123 good point, great presentation once again 🥂 TT bikes are getting WILD especially cool to see the rules change for larger sizes and tube shape restrictions change as well.
What’s about ef cycling?
I'm waiting a TT aero bike from Decathlon at 599€ 😂
Interesting! Let us know what you think 🙌 The world of TT can get super nerdy very quick! Enjoy
there is no shimano di2 dura ace 12speed groupset for TT bikes, as far as I know, right? you can connect the (old) 11speed shifters to the new 12speed battery and it would work with the 12 speed derailleurs, but it wouldn't be wireless, so not much point to it, except for the 1 extra gear
I assume Jayco dont/cant use the Cadex that Blummenfelt use in Tri.
That aside, i wonder if Ollie already have upclose look on that Cadex tri bike
Ollie is yet to get his hands on one but our friends over on GTN got a first look👉 ruclips.net/video/ErYzjvlrcR8/видео.html
so if the Canyon Speedmax is illigal with the big botom bracket used in Thriathlons, why then can UAE use it with the bottle system, it has the same aero effect
wish could ride one of those..😅
It would be a fun day on the bike! 🙌
Looks like the custom 3d printed cockpits have either been axed because they dont abide by the "being commercially available" rule or the budget caps dobt allow teams to be soending £14,000 on handlebars for every riders tt bike now
So... Cervelo developed an aero bottle years ago for the P4. It was immediately banned by the UCI. How did Colnago legally bring back virtually the same concept?
Ineos is on a tight budget this year 🤔
UCI really should legalise on board hydration like tri bikes have
The ineos bikes seemed kinda bodged together, I wonder if they are still testing with new bikes coming later in the season
Was really hoping to see something new from Giant on the Trinity front.
If it ain’t broke don’t fix it
@@benji1681 Not really how the bike industry works as there is always innovation happening. I have a 2020 and love it, but I’d really like to get a disc brake version to take advantage of the newer carbon wheel tech out there in this area.
@@ElevationEveryWeekend I’ve got a 2018 model and although the brakes are a bit crap there’s genuinely nothing more I’d want from it the only thing holding it back is it’s rider lol
@@benji1681 yeah, the Trinity rim brakes aren’t great, but I also don’t really care about the brake performance. For me it’s the ability to ride wider tubeless wheels and tires and not have to worry about a carbon brake track on a rim brake bike.
What would like to see them change? 👀
Ineos using the 11sp groupset might be due to the 9200 PMs being unreliable.
3:13 it's bólide bot bolíde ;-)
Am I the only one that spotted a new TT saddle from fizik?
Day 586 of wondering why GCN doesn't post in 4k :D
I got a question I wonder if GRX 810 back and front derailleur and GRX 600 crank set is compitilbe with 52-36 gear
That will be too big of a chainring and jump for the GRX mech. GRX is designed for off road riding where you are looking at lower cadence's.
@@gcntech GRX 810 crank is 48-31. Why would 52-36 be too big of a jump? Just need to be able to position it high enough on the seat tube.
@@gcntech Thanks I just wonder if it works ? 36 gear still usable for off road and 52 will be great for road and I am riding on road more
@@larrylem3582 do you know if it works ?
@@metinanilaydin I personally have not tried it but it is not an odd, risky thing that I'd be afraid to try (such as experimenting with wide range cassettes + double chainring setups that test the capacity of rear derailleurs). I would like to see GCN Tech revise their response.
Is that a new SHIV TT? Looks different. deeper seat tube and sloped top tube, unless it's the angle.
Don't think so, I reckon the seat tube looks deeper in the video because of the angle and the top tube is sloped just because it is a small size frame.
@@fabriziomonopoli5074 ah okay. Yes you’re probably right. I have one and reckon there’s a new one on the way because as a consumer, you can’t get them anymore.
I'm still surprised more road riders don't go tubeless.
Bodge!
Tri bike vs tt bike, I wonder how much faster a tri bike is when regulations are not at play.
5:05 rolling resistance gains because wider? not true.
Why did the UCI change the TT bike rules? To make bikes obsolete so bike companies would have to redesign and sell more bikes?
Colnago extensions not deda made by ridesync
SWorks TT bike!! Not available for sale anywhere!! Effectively discontinued fir retsil customers. Can't understand how they are still allowed to race it still at the pro level.
Nice magnet location on the Merida, shame that Shimano power meters are absolute garbage.......
They are Bolide F! Not just Bolide…. Otherwise an amazing video!
that was way too short, no cannondale TT, jesus christ, do all the teams
That glue squeeze out on the tires cannot be aero..
To bad UAE ditched Campa. 😔
So Ollie is a #2?
Brilliant stuff Ollie, you can carry a video on any subject much better on your own rather than when you're paired with whats his face.
6:07 25mm tubeless on Zipp 858s? Aren't the 858s hookless? I thought the hookless don't take 25mm Continentals?
The new(ish) S-TR's are hookless compatible.
@@bradrogers2427 I know but the 25mm (S TR) are not compatible on Zipp hookless wheels.
I would love to try a tt bike ride but i dont have a chance 😐
Your not missing out on much in a straight line on a smooth road it’s great but anything else your like bambi on ice
Have you tried joining a local club? Lots of clubs are happy to lend kit out and give people the chance to try new things 🙌
All bikes look wicked fast from a pure aerodynamic basics perspective they all seem very well designed. This is in spite of "aerodynamics specialist" Tom Boonen arguing that the Colnago bike is 2 kph slower than the Cervelo and Specialized. Go figure, the UAE boys would have gone 58 kph at the TTT and demolished the competition. Sarcasm aside, I am glad someone told him to STFU on stuff he does not what he is talking about.
@3:05 looks like tubular, not reason for rim tape to be outside of rim like that
11spd Shimano for the smaller, closer shift jump, cassettes? 12spd is 11-30 at the moment. The TT bikes don’t need that.
8:24
🤤
If hard braking isn't required, why not run an internal hub brake? Oh well. In 5-10 years, it'll be "introduced".
I love TT bikes the science is fascinating. Don't think that I would ride one in the wild though. It makes you look a bit spesh. Saying that with an aero snood your anom and could be anyone 😂
The only time I've ever been complimented on a bike was wearing full aero kit on a TT bike. Give the people what they want!
when modern-day carbon fiber road bikes couldn't get any stupider looking, well... the bike industry blows THAT impossibility out of the water
i'm thinking of taking up cigarette smoking
The Specialized by far looks the most un-aero out of the bunch. The gaps between frame and wheels are ginormous! Maybe they will make it up with their hideous new helmets.
I know, that's what I thought as well. Maybe Specialized found that those gaps make no significant difference in air drag.
It is really weird, the more aero a bike becomes the more ugly I find the bike. This means that the bikes I ride are not aero.