*Tour Aero Bike Tests*

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Yoln
Posts: 988
Joined: Thu Nov 14, 2019 10:26 pm

by Yoln

X5SAE wrote:
Thu Jun 06, 2024 7:42 pm
Yoln wrote:
Thu Jun 06, 2024 7:16 pm

Reading between the lines "Factor is a German company and we don't like to post fake numbers, so it's better for everyone to not test the Ostro".
They're british...
I'll see myself out...

I'm the process I also learned that Rose was a German brand (which I always assumed to be British...)
Litespeed Gravel Ultimate : https://tinyurl.com/zvxxy8zk
Wilier “Cento Ramato“ : https://tinyurl.com/29vs8vre
#RETIRED# Lynskey “the Do-it-all Helix” 🧬:https://tinyurl.com/bdmb5y24

by Weenie


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Roadrocket
Posts: 358
Joined: Wed Aug 29, 2018 8:43 am
Location: Slovakia

by Roadrocket

Have the tour tested any time trial/triathlon bikes?
Even some older 5-10yr test would be great to see

teakay
Posts: 37
Joined: Sat Dec 08, 2007 4:57 pm

by teakay

pmprego wrote:
Mon Apr 08, 2024 10:03 pm
TobinHatesYou wrote:
Mon Apr 08, 2024 9:11 pm
teakay wrote:
Mon Apr 08, 2024 9:04 pm

Won't going beyond 35mm wide effect Chainring size? My CX bike is limited with the stays interfering beyond a certain chainring sizes. The speeds are so high at Roubaix these days you need sufficient gearing. Srams 10spd cog opens things up but it isn't the most efficient way to go and wider Q factors can come an aero penalty. I expect the rims would get deeper to account for the wider tyres aerodynamically and therefore stiffer negating some of the benefits - there must be a tipping point where the gains don't match the losses.

They can do solid carbon yokes like on the Diverge STR. They can do raised or dropped chainstays as well as increasing chainstay length altogether. I am not as confident that we will see 45s. 38s sure, someone will try it. Wiebes was already on 35mm Mondos on Saturday.
News report bahrain rode 35c conti atr tires on rhe Merida reacto
35c isn't beyond 35c it is 35c ;)

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Nohands83
Posts: 275
Joined: Tue Feb 13, 2018 7:41 am
Location: Leeds, UK

by Nohands83

Roadrocket wrote:
Fri Jun 07, 2024 7:54 pm
Have the tour tested any time trial/triathlon bikes?
Even some older 5-10yr test would be great to see
I don't know if they have but the consensus in the UK TT community (who have done a lot of aero testing) is that Cervelo P3 / P5 or Trek speedconcept are the fastest - even today.

WouldLikeToBeLighter
Posts: 54
Joined: Thu Feb 13, 2020 8:59 pm

by WouldLikeToBeLighter

Nohands83 wrote:
Thu Jun 13, 2024 11:38 am
Roadrocket wrote:
Fri Jun 07, 2024 7:54 pm
Have the tour tested any time trial/triathlon bikes?
Even some older 5-10yr test would be great to see
I don't know if they have but the consensus in the UK TT community (who have done a lot of aero testing) is that Cervelo P3 / P5 or Trek speedconcept are the fastest - even today.
I went from a P5 to a Shiv. I achieved a CdA of 0.1966 on the P5 after testing. The Shiv was set up exactly the same as the P5, the only changes were wheels as the Shiv was disc. The initial run on the Shiv gave a CdA of 0.1925 and further adjustments gave a CdA of 0.1882.

The Shiv weighed a good kilo less than the P5 did and actually brakes quite a lot better, so a few seconds made up on a TT from both of those too.

All that said, I think TT bikes reached peak aero a while ago, so it comes down to things like weight, handling, internal storage etc. now.

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Nohands83
Posts: 275
Joined: Tue Feb 13, 2018 7:41 am
Location: Leeds, UK

by Nohands83

[/quote]

I went from a P5 to a Shiv. I achieved a CdA of 0.1966 on the P5 after testing. The Shiv was set up exactly the same as the P5, the only changes were wheels as the Shiv was disc. The initial run on the Shiv gave a CdA of 0.1925 and further adjustments gave a CdA of 0.1882.

The Shiv weighed a good kilo less than the P5 did and actually brakes quite a lot better, so a few seconds made up on a TT from both of those too.

All that said, I think TT bikes reached peak aero a while ago, so it comes down to things like weight, handling, internal storage etc. now.
[/quote]

I guess like most things aero it's very personal, my antidote was based on conversations I've had with Xav from Aerocoach and Dan Bigham. If you look at what most of both of their team riders ride it's normally a Cervelo P3/5.

Agree on peak TT bike, sadly mine is hung up unused in the garage nowadays as I stopped racing a couple of years back. Got my Cda down to around 0.185 on my P3 which was pretty decent considering I'm 184cm and 80kg.

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