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American Classic versus Zipp wheel shootout

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American Classic versus Zipp wheel shootout

Old 09-12-07, 07:00 PM
  #26  
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American classic uses Taiwan manufactured hubs in many of their wheelsets. I'm not 100% on this particular model.
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Old 09-12-07, 07:47 PM
  #27  
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Originally Posted by skydive69
No, he sounds like a hell of a rider! I know how painful it can be. I was in a two man breakaway last December and everytime I looked at my heart rate monitor, it confirmed the pain - I was running in the 180s. I wound up averaging a higher heart rate in the road race than I did in a time trial competition a couple days previous. The guy would be scary with some real equipment!
It would appear that the only equipment he requires is his motor. He is scary now. Dr.W would smoke me on a Big Wheel. Cool bike schwag is nice, but let's not get carried away. Well, OK, I can can carried away with that on BF, but not you. Try to show a modicum of restraint. Excess blather and hokum is Pcad's dept. Please make a note of it, and keep it in mind when you see the 4th 'Zipps Rule' thread I post in one month.
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Old 09-12-07, 08:05 PM
  #28  
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Two rational observers looking at the same evidence can come to greatly different conclusions.

I hate Zipps. I hate the way they look, and I don't like the black, white and red.

Now, bring on the polished aluminium!
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Old 09-12-07, 08:55 PM
  #29  
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Originally Posted by acorn_user
I hate Zipps. I hate the way they look, and I don't like the black, white and red.
Your place in hell is reserved right next to DocRay's. God save you my son.

There aren't enough candles in the entire Our Lady of Dura Achee Chapel for all the Campy Sinners on this Forum.
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Old 09-13-07, 12:14 AM
  #30  
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Originally Posted by asmallsol
Tape a bunch of weights to the tire on one of the wheels and it will spin forever. Its about rotational inertia..
spot on!


What tyres were on each wheel, if any? The heavier tyre will spin longer.

A wheel with a tyre and tube on it spins for much longer than one without

Originally Posted by Rutnick
The advantage of ceramics is when there is a load applied. .
HED have found the opposite.

They've found no quantifiable rolling resistance advantage on loaded wheels with ceramic bearings, but did on unloaded wheels

"There was a measurable drag difference between ceramic bearings and steel bearings when we tested unloaded wheels, but the difference was small enough that we could not measure it on a loaded wheel."


https://www.hedcycling.com/wheels/ceramicbearings.php

Last edited by 531Aussie; 09-13-07 at 12:20 AM.
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Old 09-13-07, 12:26 AM
  #31  
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Originally Posted by kensuf
Yeah. My buddy with the aksium's was in a 2 man break for 45 minutes and still won the race. I guess he's just a chump..
well, well, well, Aksiums tested way above expections on the "Great Wheel Test" for aerodynamcis and rigidity.


https://www.rouesartisanales.com/article-4934445.html
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Old 09-13-07, 05:17 AM
  #32  
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Originally Posted by jrennie
Sounds good except you are backwards, zipp uses smaller bearings:
15X24X5 Zipp bearings

17X30X7 American classic bearings
I was talking about the front hub, to clarrify.
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Old 09-13-07, 10:08 AM
  #33  
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Originally Posted by 531Aussie
well, well, well, Aksiums tested way above expections on the "Great Wheel Test" for aerodynamcis and rigidity.
https://www.rouesartisanales.com/article-4934445.html
According to this, the Aksiums are only 5 watts less aero that Lightweight Obermayers



..............................."watts absorbed at 50kph"

Zipp 808......................................18.1
Ritchey WCS Carbon....................19.3
HED Hed 3...................................19.7
Vuelta Carbon Pro WR.................20.8
Easton Tempest II Carbon...........21.6
CKT Splendor...............................21.7
Mavic Cosmic Carbone SL.............21.9
Shimano WH-7801 Carbon 50......22.9
Campagnolo Bora G3....................23.0
Rose Aerospoke...........................23.0
Corima Turbospoke ......................23.1
Bntrga Race X Lite Crbn aero........23.4
Fulcrum Racing Speed...................23.7
Gipiemme Carbon 5-5...................24.1
Tune Olympic Gold 2005................24.1
Shimano WH-7801 Carbon............24.4
FRM FL-R 23 SD Aerolight..............24.6
Corima Aero..................................24.7
Lightweight Obermayer................24.8
Xentis Mark 1................................25.0
Citec 3000S Aero..........................25.5
Shimano WH-R560........................26.1
Lightweight Ventoux/Standard.....27.3
Campagnolo Eurus........................27.8
Tune Skyline 2006.........................28.1
FSA RD-600...................................28.7
Mavic Aksium Race........................30.0
Citec 3000S..................................30.6
Ambrosio X-Carbo.........................31.5
Campagnolo Hyperon...................32.1
Mavic Ksyrium ES..........................33.2

Last edited by 531Aussie; 09-13-07 at 11:14 AM.
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Old 09-29-07, 08:05 PM
  #34  
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Could it be that ceramic bearings are a bunch of marketing hype and BS?

Me thinks so...
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Old 09-29-07, 08:22 PM
  #35  
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^ hmmm, possibly .... but it's funny that HED still sell them, even though they've found no data to support their benefit
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Old 09-29-07, 09:08 PM
  #36  
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you could do a rolling test, assuming you have similar tires on the two sets of wheels (ideally the same),
find a slight hill, and roll down, see which one you go further on/go faster on. you just have to make sure you maintain the same position on the bike for both runs, or multiple runs and average it out....
....
or you could just keep enjoying your fancy new wheels
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