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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 10-15-05, 08:18 PM   #1
Baggsy
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Inside Diameter of track cog?

I found an old Suzue roadbike hub tonight at the bicycle boneyard, am in the process of removing the freewheel from it. I'm hoping a stock track cog will thread onto the exposed threads and make an almost passable suicide hub. What is the inside diameter of a track cog, and does this sound workable? I remember seeing out here somewhere that loc-tite or jb-weld can be used, and I also remember somethiing about an outer ring being cobbed from a cottered bottom bracket. Just trying to work something up for a super-beater winter bike out of an old KHS Winner frame. Thanks for any and all replies...
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Old 10-15-05, 08:37 PM   #2
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if it has threads for the freewheel, chances are pretty damn good that a track cog will fit... especially given that it's a suzue. if you want to use a lockring for it, you can use one from almost any loose bearing bottom bracket setup -- any bike store should have a few lying around.
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Old 10-16-05, 03:12 AM   #3
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yeah, given that it's a suzue hub you shouldn't have any problem threading a track cog on there. and actually, there may be threads for a lockring underneath that freewheel. if so, then you're in like flynn.
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Old 10-16-05, 03:25 AM   #4
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1.37 " 24 TPI I believe.......which is the same as a freewheel or track cog diameter, also same as ball type bottom bracket lockring, which makes a good substitute for a real lockring

ya, locktite will work, please put a brake on it though.......if a regular track hub can strip the lockring right off, a lockring threaded the same way isnt gonna stop it from coming off either, but most reg freewheel threaded hubs have a little more meat to thread onto.

Ive done something similar and rode it for a year w/o any problems, use the blue loctite, just be advised, once its on, getting it back off isnt so easy, soaking in finger nail polish remover will soften the loctite, sort of. Blue loctite is some serious stuff, you can glue pieces of metal together and its almost permanent. Ive used it on all sorts of things. Once I used it to glue a water neck housing in a ford back together that I snapped in half, thing held together even under all that heat.
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Old 10-16-05, 01:40 PM   #5
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Thanks to all...I got the freewheel off after building a homemade extractor. That was more work than it was worth! Appears to be the 1.37 diameter, but alas, no lock ring threads...

Now I'm going to hit Sheldon up for a cog. His EAI's are pretty well priced out there. Any downside to them on a cludge job like this?
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