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Axle sizes(2 posts)

Axle sizesdaniel_2001
Jan 28, 2003 10:34 AM
I am looking to re-build my mountain bike. The bike has a rigid fork, and is only used on the road.
I was ready to order new hubs(Shimano XT) and realized that I had a problem. The axles on the new hubs are too big to fit on the dropouts. For instance, the XT front hub axle is 11mm. The fork dropout is 9.5 mm. I am now thinking of using a road hub for the front wheel. Any suggestions would be appreciated.

are you sure?jw25
Jan 29, 2003 12:31 PM
I think you may be misreading something. The axle of an XT might be 11mm inside the hub, but I'd bet it's only 9mm at the ends. The 9mm measurement is pretty much standard.
With a rigid fork, though, you can use pretty much whatever hub you want to. "Mountain" hubs tend to have larger axles and bodies to stiffen the hub itself, since a suspension fork's legs want to move by themselves, and the hub kind of ties things together.
A road hub may be lighter, if that's a consideration.