Aerodynamics / Aerodynamic Cost / Aero parts

Nah that was Sean Yates

Wrong replicant.

I’d turn up, I’d drive the car in the Tour de France, and I never saw an indication of anything dodgy...

https://www.youtube.com/watch?v=boELzXTdU0I

Another hour record biek. This one for Thomas Dekker

Koga TeeTee with a few mods by the looks.

Forkends on the front too.

http://www.tandfonline.com/doi/abs/10.1080/02640414.2015.1009936

This study shows that for trained cyclists there should be a trade-off between the
aerodynamic drag and physiological functioning

Don't we know that already? Plus from reading the abstract they didn't test CdA they just tested frontal area which isn't necessarily the same.

@hippy do you want the full text?

Do you have it handy?
I don't think it will help me not end up on the side of the road stretching out my glutes but you never know. #lowerisnotbetteratleastforhippy

University access, so all I need to do is follow your link and then click 'download .pdf' :-) PM coming.

http://www.cyclingweekly.co.uk/news/latest-news/german-national-team-unveil-new-fes-bike-158484

That seat cluster 'fairing' doesn't look 3:1

Interesting to see FES go futher towards hugging the wheels tight all over, where the british bikes predominantly make more space around the wheels.

Tight is better for disc wheels, BC only use the wide fork with the iO

You're right actually. Just had a look and the seatstays are fairly tight and they seem to be using the narrow forks with the IO again. However there doesn't seem to be any bike out there hugging the wheels that much front and rear.

I'll hug them wheels day and night

Anybody got any other photos of the BB area/non-drive side on that FES? Looks super narrow and decidedly "tight". No Dura-ace crank on the NDS too so I'm thinking it's to get the q-factor back to normal. Anybody know for sure?

Am I the only person who finds it a bit odd that none of the FES bikes ever have power meters on? Seems very un-German to be missing out on all ze datas...

That seat cluster 'fairing' doesn't look 3:1

It's 3:1 plus the permitted fillets.

These are definitely not 3:1

I need to play around with my new TriRig bars. Not sure I can be arsed though. Need to get a new winter bike and commuter. Bikes are so bloody annoying!

I toyed with the idea of making them interlocking like the TriRig ones, but in the end I just put some dowel holes in there for alignment in case I'm not happy with how they stack up with just the bolts.

What are the benefits of moving from say a 60mm rear rim. To a 88mm one?

Trying to decide between the two pictured. It'd be With a 60mm front, and my only road wheelset. Which I'd use for mountain Climbs, road races, and tri's.

To be honest I tempted just to stick to 60/60, Seems to be a good middle ground. But if there's a real benefit to the 88 for only around 40g of weight penalty. I could be swayed.

2 Attachments

What are the benefits of moving from say a 60mm rear rim. To a 88mm one?

There's only about 2W at 50km/h between a 404 and and 808 on the front, it will be even less on the rear.

I wouldn't even go 60/60 on something which was my only road wheel, 60mm can be a handful as front wheel if it's windy.

Depends on the bike. The dude from HED said with superbikes that shield the rear, rolling resistance is more important to consider than aero. Wheel aero is 70/30 front/rear whereas rolling resistance is 70/30 rear/front. So, my answer is obviously, "dunno" but probably "not much".

Two very helpful answers to my lazy vague question. I must be lost.

I'm pretty happy with my 56mm front. Behaves fine. Apparently that 25mm tyre bed gives bestest aero's with a 23mm tyre. Which is what I'd run up front. Then a 25mm on the back for rolling and comfort. Perfect.

These rims have a better spoke bed and handle side winds a bit better than my current ones. So when my current ones die. It'll be a decent enough upgrade.

D2Z discs are coming.. http://www.drag2zero.co.uk/d2z-disc-wheel/ £1899

is you breaking a collarbone all part of becoming a hunched aero-freak?