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 Post subject: Re: Aerodynamics
PostPosted: Tue Aug 02, 2011 8:07 pm 
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Joined: Tue Jun 22, 2004 11:42 pm
Posts: 3915
Location: lat 38.9677 lon 77.3366
LegalizeMyCannondale wrote:
First of all I apologize, I know this doesn't add anything to the discussion and might not even be that funny; I just thought of Cavendish calling the Specialized HQ to complain about his Venge:

- Specialized headquarters, how can I help you?
- Hi, this is Cavendish, Mark Cavendish. I am calling from France, I've been racing on the new Venge for over 10 days now,
and to be quite honest I couldn’t wait to get off of the Venge; it’s simply too harsh a ride for me.
I was just wondering if perhaps you guys could come up with a more forgiving frame?! I don't know if I can carry on riding this,
I might borrow someone else's bike, or get a Litespeed or Softride - cheers!!

on the other hand....
"According to Specialized lead R&D engineer Chris d’Alusio, HTC riders remarked that the Tarmac SL3’s rear stiffness was perfect but that the front end of the bike was overly harsh. In response, Tarmac engineers went with a smaller (and lighter) 1-3/8-inch lower headset bearing on the SL4. (The Tarmac SL3 had a 1.5-inch lower bearing.) The new, shapely King Cobra head tube eliminates the flat sides of the head tube that could flex and replaced them with separated bulges to maintain rigidity despite the reduction in bearing size. By elevating the fork crown bearing race higher on the steering tube to bring the bearing more in line with the down tube, the engineering team could also trim material off of the back of the fork crown, making the fork ride less harshly while at the same time reducing weight-adding and strength-robbing bends in its carbon fibers."
different bikes but still :noidea:

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 Post subject: Re: Aerodynamics
PostPosted: Tue Aug 02, 2011 8:32 pm 
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Joined: Mon Jul 18, 2011 9:53 pm
Posts: 46
Interesting, thanks for the info!



1 3/8... another headset standard :)


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 Post subject: Re: Aerodynamics
PostPosted: Wed Aug 03, 2011 12:04 am 
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Joined: Mon May 30, 2005 7:13 am
Posts: 1536
1 3/8 has been used prior to Specilialized choosing it, I believe by Cervelo. They came to almost the exact same conclusion as Spec, 1 1/2 is stiff but too harsh.


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 Post subject: Re: Aerodynamics
PostPosted: Wed Aug 03, 2011 10:17 am 
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Joined: Tue Jul 27, 2010 8:31 pm
Posts: 1048
Meanwhile the Cannondale Supersix continues to ride like a dream, handle superbly and descend with confidence.

Most different standards are there to make the customer THINK they need it - Cervelo just had to adopt ideas pioneered by competitors whilst pretending they were making improvements.

Pure marketing BS to me. It makes me laugh. The Cervelo S2 deforms more in the rear triangle and twists more at the headtube than a simple Seven Alaris. Without a bottle it's less aerodynamic than an R5 with one and it's BB is less stiff than many a welded frameset. Most people I speak to think it will make them faster because it's so stiff and aero. Chalk up one victory for the marketing men.


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