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White Industries Eccentric(6 posts)

White Industries Eccentrictriangleforge
Feb 26, 2003 2:10 PM
Was scanning Sheldon Brown's site looking for a new hub to improve the chainline on my SS MTB, and spotted a new hub by White Industries with an eccentric axle that allows chain length adjustments & fixed gear riding with vertical dropouts. The MTB project immediately dropped out of my head, and the "Someday get up to Trexlertown and race on the track" project re-emerged.

I've got a nice middle-aged Cannondale road frame (currently doing duty as a TT bike) that would be perfect for such a project, if indeed this hub will work as advertised.

Scroll down a bit at:

http://www.sheldonbrown.com/harris/fixed-hubs.html

or take a quick look at the .JPG I'll post below.

While first hand experience would be terrific, I suspect this item's new enough that not many have used it. So I'll settle if necessary for wild-eyed, unsubstantiated speculation. Any reason I'm not thinking of that this hub couldn't be used to make a track bike?

Cheers!
re: White Industries Eccentricclimbo
Feb 26, 2003 2:28 PM
purely speculation on my part, BUT, others have retro-fitted regular hubs to work like this before for singlespeeds etc. and they work fine. With the correct chainline there is a small amount of adjustment to get the right tension on the chain and your set.
looks like a cool design, but would it rotate during a kilo start?Tig
Feb 26, 2003 7:22 PM
I like the design, but not the cost. I can't tell how you open it up to service it, but guess you unscrew the axel sections apart from each other.

A powerful kilo start might rotate the eccentric section around a bit, causing chain slack or worse. I'd suggest tightening it down extra hard. ...Who knows yet?
I wondered the same thing, but...triangleforge
Feb 27, 2003 11:00 AM
I wondered the same thing, but that of course assumes that I HAVE a powerful kilo start!

The other thing I wondered about is the limited range of adjustment fore & aft -- apparently it's around 1.5 cm, as opposed to the 3+ cm in a horizontal dropout, and more in a track rear end. Still, I think you could make it work with a variety of cog sizes by adding or deleting chain links, though of course that would be a bit more of a hassle.

I think I might give it a try; if I go ahead with this route, look for a report here a few months down the road!

Cheers!
looks like a cool design, but would it rotate during a kilo start?ukiahbill
Feb 27, 2003 11:10 AM
I don't know personally, but think it would probably be ok since the offset is so small...torque is R x F (lever arm times force)...F could be large w/ a strong rider, but R is very small, so it would take a tremendous force to make the axle rotate...I think.
It wouldn't rotate.brider
Mar 3, 2003 11:21 AM
The flat sections on the axle are the same distance apart as a standard axle, so it won't rotate.