freehub casette change from 8 speed to 6 speed?
04-01-14, 04:11 PM
#1
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freehub casette change from 8 speed to 6 speed?
i'm looking to upgrade from a 6 speed freewheel hub to 6 speed freehub. i know a freewheel casette is not compatibible with a freehub casette. i already have a 6 speed freehub casette. i need to find a freehub wheel to use it with. a lot of ones on craigslist are from newer mountain bikes with 8-10 speed casettes. can those take a 6 speed freehub casette? i do not want to change index shifters so i would like to stay with the 6 speed.
04-01-14, 05:35 PM
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all other issues aside, like shifting, axle length, OLD, spline compatibility, etc., freehubs can accept and work with any cassette that can be mounted. excess freehub width can be taken up with spacers. note that i consider a cassette that is too wide for the freehub to be unmountable.
i have a number of freehubs with ONE cog on them. and a bunch of spacers. and i've had two, four, and five cogs on a freehub in recent years at one time or another.
if the 6-speed cassette that you already have, if i am reading you correctly, is Shimano compatible, i can highly recommend their 7 speed hyperglide aftermarket freehub. very inexpensive, available online, and works wonderfully. something like this. although i think they can be had for less.
i have a number of freehubs with ONE cog on them. and a bunch of spacers. and i've had two, four, and five cogs on a freehub in recent years at one time or another.
if the 6-speed cassette that you already have, if i am reading you correctly, is Shimano compatible, i can highly recommend their 7 speed hyperglide aftermarket freehub. very inexpensive, available online, and works wonderfully. something like this. although i think they can be had for less.
Last edited by hueyhoolihan; 04-01-14 at 05:41 PM.
04-01-14, 05:39 PM
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freehub body is a fixed width so 8 + speed hubs are what they are .
spreading the dropouts and adding left end of the axle centering the rim removes dish tension.
uni-glide splined bodies are different from hyperglide bodies for 1 thing the old ones used the high gear
to secure the rest, the current lockring setup does not .
best of luck pushing that rock up hill
spreading the dropouts and adding left end of the axle centering the rim removes dish tension.
uni-glide splined bodies are different from hyperglide bodies for 1 thing the old ones used the high gear
to secure the rest, the current lockring setup does not .
i do not want to change index shifters so i would like to stay with the 6 speed.
Last edited by fietsbob; 04-01-14 at 05:43 PM.
04-01-14, 07:35 PM
#4
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i'm looking to upgrade from a 6 speed freewheel hub to 6 speed freehub. i know a freewheel casette is not compatibible with a freehub casette. i already have a 6 speed freehub casette. i need to find a freehub wheel to use it with. a lot of ones on craigslist are from newer mountain bikes with 8-10 speed casettes. can those take a 6 speed freehub casette? i do not want to change index shifters so i would like to stay with the 6 speed.
6 Speed cassette sounds like Uniglide.
IF so, the free hub body MIGHT be interchangeable with a Shimano Free Hub. Some of the new Shimano hubs use a different spline pattern and aren't compatible with the older bodies. One is the RM-30 from personal experience.
04-02-14, 10:59 AM
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There are old Shimano freehub bodies that were cross-compatible between uni-glide and hyperglide = could take a threaded outer sprocket. I seem to remember someone using a bottom bracket lockring to secure the chosen sprockets/cassette instead of a threaded on sprocket.
Would probably still widen the rear wheel though. But a little less than when using an 8+ speed freehub body.
Would probably still widen the rear wheel though. But a little less than when using an 8+ speed freehub body.
