Fastest Front Wheel for TT (w/ tire) 2017
Moderator: robbosmans
There is and isn't a lot of data on the interwebs, but I'd like to know if there is any obvious wheel tire combos that are fastest. I'm only really interested in wheels that perform below 12.5deg. What is the lowest Crr and CdA wheel tire combo?
Are any of these fastest:
HED GT3 with FMB Record
Sworks CLX 64 with Sworks Tubeless
HED H3+ with Vittoria Speed Tubeless
Zipp 808 with Conti TT 25mm with latex
Are any of these fastest:
HED GT3 with FMB Record
Sworks CLX 64 with Sworks Tubeless
HED H3+ with Vittoria Speed Tubeless
Zipp 808 with Conti TT 25mm with latex
Toys-R-Us
If you're not going sideways like the guys who do the tests, you want a narrow tire that's no completely slick. Wheel depth is secondary.
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What I recently realized that if you pay attention, you will be very close to the best combination. Without proper testing, it's impossible to pick out the best at that point, so you should just let it go.
I think the fastest rolling tires currently: vittoria speed corsa g+ tubeless/clincher, specialized turbo cotton, conti tt. From aero point of view probably you can't go wrong with conti tt and conti attack (the sworks tires have too high crr to use them in these situations imho). I would not pick a tubular tire if you have an alternative, less room for error.
Pay attention to the tire width too. I'd pick one of these combos:
Roval CLX 64 with Specialized Turbo Cotton 24mm (tony martin's 2016 qatar tt setup) / Conti TT 25mm (with latex tube)
OR
HED H3+ with vittoria corsa speed g+ tubeless.
The zipp has a disadvantage being not tubeless ready for the 23 corsa speed and might be too narrow for not taking an aero hit if you run it with 25mm conti TTs. With the turbo cottons it might be ok, but who knows.
My favorite article regarding rim / tire width: https://silca.cc/blogs/journal/part-5-t ... rodynamics
I think the fastest rolling tires currently: vittoria speed corsa g+ tubeless/clincher, specialized turbo cotton, conti tt. From aero point of view probably you can't go wrong with conti tt and conti attack (the sworks tires have too high crr to use them in these situations imho). I would not pick a tubular tire if you have an alternative, less room for error.
Pay attention to the tire width too. I'd pick one of these combos:
Roval CLX 64 with Specialized Turbo Cotton 24mm (tony martin's 2016 qatar tt setup) / Conti TT 25mm (with latex tube)
OR
HED H3+ with vittoria corsa speed g+ tubeless.
The zipp has a disadvantage being not tubeless ready for the 23 corsa speed and might be too narrow for not taking an aero hit if you run it with 25mm conti TTs. With the turbo cottons it might be ok, but who knows.
My favorite article regarding rim / tire width: https://silca.cc/blogs/journal/part-5-t ... rodynamics
nemeseri wrote:I think the fastest rolling tires currently: vittoria speed corsa g+ tubeless/clincher, specialized turbo cotton, conti tt. From aero point of view probably you can't go wrong with conti tt and conti attack (the sworks tires have too high crr to use them in these situations imho).
Why are you mixing aero and crr in the same sentence? If the turbo cottons have the lowest rolling resistance, their crr is the lowest.
wingguy wrote:Why are you mixing aero and crr in the same sentence? If the turbo cottons have the lowest rolling resistance, their crr is the lowest.
I meant that while the specialized turbo cottons have very low crr, they aren't that aero. On the other hand the S-Works turbos are aero, but their crr is not that good to be considered (at least I would not use them for pure TT). I based this on tests by tom anhalt.
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Where did you find that the cotton is less aero than the Turbo?
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nemeseri wrote:wingguy wrote:Why are you mixing aero and crr in the same sentence? If the turbo cottons have the lowest rolling resistance, their crr is the lowest.
I meant that while the specialized turbo cottons have very low crr, they aren't that aero. On the other hand the S-Works turbos are aero, but their crr is not that good to be considered (at least I would not use them for pure TT). I based this on tests by tom anhalt.
Ahh yep, got it.
Sorry, my bad
Nefarious86 wrote:Where did you find that the cotton is less aero than the Turbo?
Here is the detailed test by tom anhalt: http://bikeblather.blogspot.com/2016/03 ... party.html
The first graph is just aero results, the second one only crr and then you can see the combined results.
Although the S-Works Turbo 22C tire was the clear leader in the CdA plot, when combined with the expected Crr of the tires, it actually isn't as good as any of the other tires at 10 degrees and below of yaw angle. In my view, the Turbo Cotton tires are the clear winners in the combined power plot
nemeseri wrote:Nefarious86 wrote:Where did you find that the cotton is less aero than the Turbo?
Here is the detailed test by tom anhalt: http://bikeblather.blogspot.com/2016/03 ... party.html
The first graph is just aero results, the second one only crr and then you can see the combined results.
I see what he means now. Basically on the aero side the S-works simply has a narrower version available than the Cotton. A minimum 22 vs 24.
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That was my confusion also haha.
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Zoro wrote:nemeseri wrote:... I would not pick a tubular tire if you have an alternative, less room for error....
What does that mean?
The glue job is a critical factor in the CRR of a tubular tire. There is significant difference even between glues. If one of your main concerns is crr (in TT it should be), without proper equipment, it's really hard to tell if a glue job works well..
Detailed info: https://drive.google.com/file/d/0BwhVX- ... view?pli=1
I don't believe that's tubulars are slower than clinchers, but if you don't have the time and equipment to test your tires, I think clinchers are a better choice. With tubulars, with proper gluing and testing you can end up with the same CRR as clinchers... so why make your life harder? In crit or road race? Sure, they make sense!
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