I’ll keep that in mind thanks, need to check geometry on the large, would be good for reach but might be getting a bit high up front for me.
Finished my second ITT last night, 10km race in a rolling terrain with 5m/s side wind almost the entire way. I am pretty satisfied with my average power of 349W, but I was aiming for under 14min and only managed 14min 17s. I did lose quite a lot of time in the start (too high a gear), short s-shaped chicane where I slowed down way too much with a bad line, and the turn halfway through which I’m having huge difficulties with. Oh well, I hope I can improve next time around!
I will be tweaking my position a bit after this, first off by changing the 175mm cranks into 165mm cranks (already arrived) and subsequently altering the saddle and the front end. I am also thinking about buying a skinsuit and shoe covers – and possibly a disc wheel if the budget allows! Trying to become faster in TTs already feels very addicting.
The skin suit and shoe covers or socks will be the best bang for the buck over a disc wheel. I also highly recommend practicing the turn around within your training.
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What bike rules do you need to confirm to?
Not uci legal, but I know a lot of people run the EZ gains disc covers instead of buying a full disc. Company are local to me (Cambridgeshire, uk), have taken all their stuff to the wind tunnel at Silverstone, and I think they’ll ship internationally.
I was chatting to the owner/founder on Thursday about their chain ring cover (I’d just lost a race by 8 seconds, beaten by an 18 year, and a masters/gf world champion, I need those gains, EZ or not
).
Ye, they ship international, I got their crankset cover, but havent used ot tested it yet as its UCI legality is very debateable…
How come to major tire manufacturer picked up on the idea Mavic had in 2012 and made a smoother tire/wheel interface.
E.g. Mavic Cosmic CXR80 Gallery - Slowtwitch.com
It seems like such an obvious thing to do in todays age when everyone is looking for marginal gains.
Even Jumbo picked up on the concept last year but it got little to no media attention suprisingly. It looked more like a DIY hack than something you could sell to a consumber to be fair.
It’s just curious how every serious time trialist knows about the how different high end tt tires perform aerodynamically but the industry doesn’t pick up on that trend go one step further.
I am absolutely your opinion on this being a missed opportunity and I am also one of the crazy people, that care about sh!T like that.
However, the effects seem to be a little smaller than what Jean-Paul Ballard says (although Swiss Side might have had different results).
A faster rolling tire still often times beats an aero tire that is marginally slower rolling:
I am now running a Rolling Resistance mullet, with a GP5000TT in the front and a CS in the back.
Aaaand another second ![]()
Although this one was a lot more predictable than the last one. I started on time, so can’t blame that. A friend of mine showed up to the event and despite much recent TT training, he is a close to 400W FTP beast, with good kit and ample endurance.
Quite happy with the speed and efficiency, a little low on power though. I was never in the red, it was more like an hour long low Z4 effort. Still, I blew everyone else outta the water, so that’s good.
The equipment is pretty dialed, don‘t think there is a ton of potential there:
Another chance next week…
(The average speeds are inflated by about 2kph. I think they calculated a too high a distance)
PS: I had a bottle on the bike, but didn’t take a sip. It was 19C, overcast, and even started to rain a little. I had prehydrated well enough, so not too thirsty.
Congratulations!
I sometimes find this to happen when you take good curves and the course is measured as an “in the middle of the road”.
My TT frustratingly never happened last night. My car which has been reliable up till now died a few weeks back it jump started no problem and was very spritely after getting a new battery last week so I stupidly left it until last night’s TT and it wouldn’t start again. So I went out for VO2 max session instead. I need to sort out my courage in the TT position though. I seemed to have Oodles of comfortable power in the TT position but I’d loose confidence and transition one hand to the base bar to cover the brake and the power whilst still strong by my standards wasn’t quite as smooth. I’d then decide that I was better to have both hands on the base bar to get that smooth comfortable power out again. I think Ive lost confidence in my braking due to the variability of my hands after chemo and to avoid pulling a handful of brake I’m feathering them too early. I really need to sort out that eraticness on certain courses I can be up to 3mins ahead of the folk who usually beat me by seconds on the more technical tts (particularly those with significant twisty and/or down hill descents, and whilst I claw some of it back on ascent its already lost).
Whilst I sat up through town and on the 30s off the CdA 0.298 and the associated chart probably gives you an idea. of how un-aerodynamic I was during intervals.
Its quite a common thing on TT courses from my experience. They usually overestimate the distance, never had a race that I had more miles than what was estimated beforehand by the organizers.
Great ride @Aeroiseverything - Are those corners full speed in the aerobars? From the strava map it looks like at least the 2 outer ones you have to break and get into the base bar.
I do exactly the same on training rides - always in and out of position, but I just seem to be able to get on with it in a race.
Have you thought about hydraulic brakes? Extra modulation might be better with your hands? Might mean a new bike though!
My gravel bike is hydraulic discs but I have only hired road bikes with discs, I tended to be slower but perhaps given more than a week Id get use to them ![]()
Hi guys,
I have a question…
When you riding with crosswind from the right and the right side of the rode is open (no trees or bushes). Do i need to ride on the right or left side of the rode?

I was thinking to ride on the left side because before the wind hits the bushes there will be some turbulence. What do you think?
Maybe start on the right side of the road, let the wind gradually move you to the left, then do a sharp turn back over to the right, and do the same again. That way, you’d maximise the sail effect. (But you also make the distance quite a bit longer, so this is likely not the best way!)
I agree that there will be turbolent air in front of the bushes, but I can’t decide if that is good or bad.
(All those images show airflow in the opposite direction, with turbolence behind the bushes, so not what you mean I think?)
Wat i mean is that before the wind reach the bushes the wind will go up…so there will be less wind than on the right side of the way

Yes, I was just thinking that sometimes if stood directly in front of a wall, with the wind on the wall, it feels less windy. Probably because of the reflected wind. But whether that is actually usefull, I don’t know. I’d imagine that is also an area of high pressure, which you’d want to avoid?
It might also depend on the hight of the bush/obstacle. You can see how the lines get closer over the top, so the wind speed increases there. You’d probably want to avoid that region. But if its a high bush, I’d be over your head anyway.
Looks like me in a skin suit after a proper holiday vacation lol
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