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 Post subject: zipp wheels
PostPosted: Fri Oct 22, 2004 7:47 pm 
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Joined: Wed Oct 08, 2003 4:15 am
Posts: 3250
Location: tucson
Hey everyone, i just picked up a slightly used set of zipp 303s from a friend for practically nothing. I planned on using these tubbies for road races etc, but i was wondering if they could "cross over" (no pun intended) to a cross bike. They are 20 hole front and 28 hole rear. I weigh 150 lbs.


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 Post subject: zipp wheels
Posted: Fri Oct 22, 2004 7:47 pm 


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 Post subject:
PostPosted: Fri Oct 22, 2004 9:02 pm 
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WWotY 2007
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Joined: Sat Jul 10, 2004 5:37 pm
Posts: 1476
Location: France.
Hmm.I think it's better if you don't .

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PostPosted: Fri Oct 22, 2004 9:57 pm 
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Joined: Sun Jul 04, 2004 12:51 pm
Posts: 337
Location: Denmark, University of Southern Denmark
The 303's are too fragile.
I know a friend who uses the 404 (60mm deep Rim) for Light MTB-courses. I build a bombproof "404 wheelset" only used/brought the Rim for my racer too.

The 404 Rim works perfect - and is super stiff.

But you need some special spoke setting - not the normal X-times crossed.
But It's to much writing to tell you how - I did a work at the university about this, so I would say I know a bit about experiments like this.

Well you can experiment yourself if you like to, one tip:
If you know how to, then calculate the forces on the wheel (all forces! Radial - Lateral and Axial) and divide them on the number of spokes needed to take the action of a offroadride plus the spoketension from the other spokes.
You'll see that the wheel at its optimal spokesetting isn't like the standard crossed builts at all. Theres a lot of good but also bad stuff about different builds on the net.

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PostPosted: Fri Oct 22, 2004 11:32 pm 
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Joined: Fri May 21, 2004 7:31 pm
Posts: 531
Location: Stumptown USA
yeah i read on roadbikereview cx forum about several guys riding 303's that broke them at last years nats, i think it was.

jeremyb

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