I thought I had a freehub but this looks like a freewheel
08-04-12, 08:33 PM
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I thought I had a freehub but this looks like a freewheel
I got this garage sale bike, a Trek 7100, from my father to replace my crashed road bike. Its gears are too wide-ratio'd for my road use so I thought I could pick up a cheap cassette to go on it. I pulled the wheel off today to count teeth and figure out what hub I had, but this looks to me like I need a freewheel instead. Actually I have lots of old freewheels but I'm not sure I have a remover to fit this Trek. (Just for kicks I could put my old 13-19 straight block on this hybrid bike with MTB handlebars and triple chainrings!)
08-04-12, 08:35 PM
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...and your question is?
=8-)
=8-)
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
08-04-12, 08:39 PM
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Last edited by LesterOfPuppets; 08-04-12 at 08:51 PM.
08-04-12, 08:46 PM
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Yes it's a spin-on freewheel. You can tell by the removal splines.
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08-04-12, 09:21 PM
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I've never seen a megadrive freehub. 99% + positive that's a freewheel.
With freehubs there's not such a deep black hole behind the locknut.
With freehubs there's not such a deep black hole behind the locknut.
08-04-12, 10:31 PM
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I have no need for that big 34 tooth cog, the biggest that I need is probably a 21. I've got lots of old freewheels from 13x19 through 13x23, I can't remember if my freewheel remover survived or not, but a new tool would still be cheaper than a new cassette. I saw that big recess and splines for the normal freewheel remover and figured that I had a freewheel but thought I would get confirmation.
08-04-12, 11:36 PM
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I ended up grinding off the rivets off of 2 of the cassettes and replacing the 34t with something smaller, most people who came into the bike coop and want a cassette, don't want a megarange sized cog.
08-05-12, 07:16 AM
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AFAIK, those SunRace freewheels use the same puller as Shimano freewheels; Park's FR-1 or equivalent.
08-05-12, 06:48 PM
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I dug through my bike toolbox and found my puller. The photo below is a comparison of the 13-34 Sunrace vs. one of my old 13-21 freewheels, lots of difference. I put that 13-21 on the bike after I rode this morning. I'll try it out early next week.
