Rear Hub Sizes
05-13-08, 11:29 PM
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Rear Hub Sizes
I am looking for a little help understanding rear hub lengths in relation to free wheels. Am I right in my understanding that a 120mm hub works with a "standard" sized 5 speed cog set, a 125mm or 126mm with the 6 speed that showed up in the late 70's and 80's and the 130mm, 135mm for later 7 speed free wheels?
I am looking to build up a early 80's 6 speed rear wheel for a Japanese frame and want to make sure I am looking for a 125mm or 126mm rear hub.
Thanking you all in advance for the responses.
I am looking to build up a early 80's 6 speed rear wheel for a Japanese frame and want to make sure I am looking for a 125mm or 126mm rear hub.
Thanking you all in advance for the responses.
05-14-08, 10:30 AM
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not quite (and check Sheldon's site for extra info and confirmation)
Generally speaking, and for ROAD bike hubs:
120=5 speed
126 (125)=6 and *many* 7 speed
130=8,9,10 speed
Mtn. bike hubs used 130 for 7 and 8, 135 for 8,9, 10...it gets confusing cause there is some overlap within the O.L.D.s and between road and Mtn. hubs, and between cassettes and freewheels. I have a couple road wheels that have Mtn. hubs laced in: further muddying the water.
Generally speaking, and for ROAD bike hubs:
120=5 speed
126 (125)=6 and *many* 7 speed
130=8,9,10 speed
Mtn. bike hubs used 130 for 7 and 8, 135 for 8,9, 10...it gets confusing cause there is some overlap within the O.L.D.s and between road and Mtn. hubs, and between cassettes and freewheels. I have a couple road wheels that have Mtn. hubs laced in: further muddying the water.
06-17-08, 10:52 PM
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Thanks for the help.
