Time Trial / Time Trialling / TT

If they're 700c tyres then they won't fit @Cyciste's bike, as it's 650C, and when it comes to tubs I'm a Vittoria fanboi. Corsa Speeds all the way for me.

Ah no problem then, yep they're 700c and just going spare atm. Hope it's got it sorted.

https://www.vanillabikes.com/products/vittoria-corsa-sc-isogrip-320tpi-tubular

Just nabbed a few - my corsa speeds have worn pretty quickly so giving these a try.

Throwing away watts there.

Anyone had any experiences with the turbo cotton clinchers ? They're quite a fast tyre but just worried if they will have any puncture protection

@hippy runs them I believe.
There's a pair of barely used Supersonics on eBay for £30 (or best offer) - another cheaper option.

Hah, I have raced on them (crits and RR's that is) for about a year. Finally getting to the end of their life, but for 11 months I didn't get a single puncture, but 3 on the rear in the last month so it's being replaced. Lovely and supple for cornering, but not much experience going in a straight line for miles on end.

Yeah, but the Corsa Speed puncture resistance has been non-existent, for me anyway. DNF'd three times this year already.

Awesome. Will get a pair later. Do they size up big like conti tyres? Don't have much clearance on my TT bike

Cheers will have a look

Yes, but not as much conti's.

I use them on my road bike. Their CdA isn't meant to be great- Corsa Speed or Conti Supersonic likely to be faster.

Hmm, I have about 500 race miles on mine so far and touch wood it's been fine.

What pressure, out of interest?

125psi, give or take. All in the dry, although technically I didn't DNF the last one as it was 500m from the end so I just rolled through, albeit rather comically!

Any recommendations for allen bolt skewers (or similar)?

Halo ones are decent and cheap. Better made and more reliable than the overpriced Zipp/FFWD which look suspiciously like rebadged Trans-X/System EX ones. Less frontal area than those on the threaded end, too.
I bet Andy will recommend Viewspeed (if you have the money).

if you have the money

If you have a teammate who regularly travels to the US so you save on postage and duty!

They're nice, but a measurable difference to a £5 halo allen skewer? Unlikely...

Should tripsocks go on the outside of overshoes (velotoze) or inside..?

Personally didn't like turbo cottons, felt slow and did not inspire confidence in corners.

outside.

Absolutely outside. @xavierdisley blacklists anyone who tucks them in.

Why would you tuck the trips into the overshoes? Defeats the point of having trips...

Yeah had a look and you're probably right. Will opt for the supersonics

What happened to Turbo Cottons?

Weren't they #pro-tip last year?

Had a play around with : http://www.cyclingpowerlab.com/TyreSelection.aspx and the corsa speed TLR is significantly faster (roughly 30 seconds both with a butyl tube), with the supersonic actually slower than the turbo cotton. The model uses drum data for crr and uses tyre profile to estimate cDa so seems sound enough, although I guess the cda of the tyre depends on wheel width I guess

I guess the cda of the tyre depends on wheel width

And tread pattern.