Cyclocross - Mavic Rims and Shimano Hubs

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sivat
09-29-08, 12:03 PM
I need some help from anyone who has a similar setup. I'm building new set of wheels using mavic open pro rims and shimano xt hubs. The rear is 9 speed. Neither is using disc brakes and they are 32h rims and hubs. I'm trying to decide whether to build them 3 or 4 cross. Has anyone built a similar setup using 4 cross? I'm wondering if there is any interference between the adjacent spokes.

justinb
09-29-08, 12:39 PM
I've never owned or ridden 4x wheels, but I can say that Mavic-Shimano 32 3x has been done thousands of times. As long as the build is competent, they'll last forever.
flargle
09-29-08, 12:54 PM
4 x 9 = 36 > 32

sivat
09-29-08, 02:58 PM
While I'm impressed with your algebraic skills, i'm not sure you understand the question.
flargle
09-29-08, 03:30 PM
While I'm impressed with your algebraic skills, i'm not sure you understand the question.It's not algebra, it's arithmetic. Don't build the wheels cross 4.
darksiderising
09-29-08, 05:41 PM
It's not algebra, it's arithmetic. Don't build the wheels cross 4.

I don't understand the point of your arithmetic, either.
flargle
09-29-08, 06:15 PM
The "divide by nine" rule gives the largest number of crosses before spokes go beyond tangential.

Check out Jobst Brandt's "The Bicycle Wheel".