RoadBikeReview.com's Forum Archives - Racing


Archive Home >> Racing(1 2 3 )


Aero Bar Epiphany(11 posts)

Aero Bar Epiphanysievers11
Apr 3, 2003 9:38 AM
I just started racing this year, decieded that I need to be a strong TT if I want to have a chance at being a "winning" cyclist.

Our club has incentives for making certain time in 20k and 40k TT. Not having any experience in TT I didn't think the 24.8 mph average required to get paid was even an option. Well to make a long story short, I got a nice aero bar (syntace c2 ultra) and boo-yaw! I am more relaxed in the aero position and obviously more aerodynamic, easy 4-5 mph faster.

What else should I do to get "more aero"? It might be like $130 to get cow horns/levers/shifters, worth it for now? I have seen a lot of american racers doing TT with standard drops and a clip on. Does it depend on the TT?
holy cowDougSloan
Apr 3, 2003 9:50 AM
I might get 1/2 - 1 mph better speed with aerobars compared to riding in the drops. 4-5 mph is fairly extraordinary.

Your position on the bike via aerobars is the number one thing you can do. After that, wheels, frame, and clothing/accessories matter. A deep section low spoke count front wheel is likely the next best thing.

The cowhorns/levers/shifters probably won't help much in cruising speed, but more for convenience, and staying in the aero position while shifting. The have good "cool factor", though.

A skinsuit and aero helmet helps some.

Check out the Zipp wheels and Cervelo bike websites. They have lots of aero information listed. Also, check the aero drag sections at http://www.analyticcycling.com

Doug
re: Aero Bar Epiphanybrider
Apr 3, 2003 3:07 PM
The cow horns and the other required regalia (if you go cow horns) are more determined by the position your shoulders take relative to the bars, and not really driven by aerodynamics. If you're riding a very steep position with the bars positioned appropriately, drops are useless, so you'd use cow horns.

As stated, go with a low-spoke-count deep section front wheel (or a Hed3) up front, and if you can swing it, a disk in the back (Renn makes one that's VERY cost effective) and you've got the wheels covered. Skinsuit, aero helmet, etc all add up. But first make sure your position is dialed in before tinkering with anything else. You may have some good speed gains now, but by getting that position dialed in, you can expect event more speed gains without shelling out a lot of $$.
re: Aero Bar EpiphanykenyonCycleist
Apr 3, 2003 8:37 PM
go w/ a clip-on. vision tech has a very solid design in their clip-on model.
Psychological advantagetriple shot espresso
Apr 4, 2003 8:39 AM
I've been using the Louis Garneau Prologue helmet with visor and shoe covers. I don't know if it provide any realy aero advantage at all but I feel a lot faster in the helmet. The shoe covers make you look fast.
Make yourself as narrow and flat as you can without compromisingVeloflash
Apr 4, 2003 9:19 PM
Power
Next step = aero wheels, and stop kidding yourself about the barKerry
Apr 6, 2003 4:23 PM
There's no way you got 4 mph from the bars, and when you say "easy 4-5 mph faster" you're telling us that you didn't actually do a serious measurement. If you go out and do a 20K TT flat out riding in the drops, and then do the same thing with the aero bars (separate by a couple of days) you'll find that your improvement is more like 1-2 mph, depending on how good your position was on the standard bars AND assuming that you get low, flat, and narrow with the aero bars. You might get addtional improvement from a more forward saddle position - breathing is often restricted when going to aero bars and moving the saddle forward opens up the angle between legs and torso.
Kerry finally recommends something other than standard wheelsweiwentg
Apr 6, 2003 7:02 PM
no more 32-spoke Ultegras on Open Pros? :)
Another sign of the impending Apocalypse! [nm]speedisgood
Apr 7, 2003 8:27 AM
Hey, he wanted TT wheels, not all-rounders! (nm)Kerry
Apr 8, 2003 4:14 PM
all my wheels are round (nm)DougSloan
Apr 9, 2003 7:00 AM