Question about my freewheel and hub
06-20-18 | 06:38 PM
#1
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Question about my freewheel and hub
Not sure what kind of freewheel this is or how to remove it. Anyone know? Is there a way I can replace it with a shimano mx30 freewheel or is the mx30 not compatible with this hub/freewheel setup? Thanks for any help.
06-20-18 | 06:57 PM
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What you have is a freehub with a single speed conversion kit. You wont be able to replace it with a regular single speed freewheel. You can remove the cog with a chainwhip and cassette removal tool and change the cog to whatever tooth count you prefer.
06-20-18 | 07:06 PM
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06-21-18 | 10:15 AM
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NB: getting a threaded hub, your screw on freewheel, because of the freewheel pawl mech and bearings
May not go as small a tooth count as you desire .. 16t as least..
12 spline standard is what all shimano compatible freehubs use,
they made a BMX single cog freehub,
(but specing that may have driven the selling price of the bike up)
with a multi speed cassette, they use a specific cog alignment so a narrower and wider spline are created ,
for single speed freehub they are all the same width ..
[I see a 1& 2 speed* 12 spline freehub on the Brompton's folding bike offerings.]
^*( they get 6 speeds by fitting a 3 speed internal with a 2 cog driver)
...
May not go as small a tooth count as you desire .. 16t as least..
12 spline standard is what all shimano compatible freehubs use,
they made a BMX single cog freehub,
(but specing that may have driven the selling price of the bike up)
with a multi speed cassette, they use a specific cog alignment so a narrower and wider spline are created ,
for single speed freehub they are all the same width ..
[I see a 1& 2 speed* 12 spline freehub on the Brompton's folding bike offerings.]
^*( they get 6 speeds by fitting a 3 speed internal with a 2 cog driver)
...
Last edited by fietsbob; 06-21-18 at 10:24 AM.
06-21-18 | 01:19 PM
#6
Clark W. Griswold
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Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
Wolf Tooth and Chris King make some nicer cogs for that sort of thing and CK also makes a lovely SS hub designed for cassette cogs.
06-21-18 | 02:03 PM
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Then you have to respace or replace the frame for the 120mm hub. Why bother when this works?
06-21-18 | 03:57 PM
#8
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It just don't look right to me. When the flange is so much unsymmetrical offset. Style is important for SS.
Also, I belive Track hubs are more effieicency. I believe there's only one bearing on each side of Track hub. Shimano hubs have 2 bearings on the drive side...so more bearings means more drag load.
Also, I belive Track hubs are more effieicency. I believe there's only one bearing on each side of Track hub. Shimano hubs have 2 bearings on the drive side...so more bearings means more drag load.
But that doesn't change the fact that the frame isn't built for a 120mm track hub, and may not be changeable to 120.
06-21-18 | 04:13 PM
#9
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You have money to spend?,
there are single speed hubs for MTB frame widths, 135 ..
then the hub flanges will be more symmetrically braced. new wheel ...
I expect what you have is a cost cutting choice, which is why you went to bikes direct they're cheaper
YGWYPF.
/...
there are single speed hubs for MTB frame widths, 135 ..
then the hub flanges will be more symmetrically braced. new wheel ...
I expect what you have is a cost cutting choice, which is why you went to bikes direct they're cheaper
YGWYPF.
/...
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