flip flop hub threading
#27
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Joined: Aug 2005
Posts: 12,769
Likes: 38
From: Rocket City, No'ala
Bikes: 2014 Trek Domane 5.2, 1985 Pinarello Treviso, 1990 Gardin Shred, 2006 Bianchi San Jose
OK, in all fairness to the naysayers, there are some cases when the hub flange is too close to the end of the treads on a fixed hub, such that a freewheel body will hit the outboard spokes. There was a case reported in a previous thread of this problem with a Dura Ace low flange track hub and a flip/flop fixed/fixed track wheel I recently puchased is like this. Hubs like the Harris/Formula are designed with sufficient clearance that a freewheel will work safely and properly.

You can just see the reeded edge of the "spacer" on the left side of the wheel.







