I'm planning on conversion of my son's coaster bike to a 5-speed. I've got the parts. The rear hub looks a lot wider. Is it supposed to be that wide, or did I get an incorrect hub? If it supposed to be that wide I'll have to spread the stays.
5-speed hub spacing a lot wide than coaster?
- Thread starter CRASH
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Multispeed wheels typically have wider dropout spacing than singles do.
Break out the 2x4. Just make sure you widen the stays close to equal left and right.
Break out the 2x4. Just make sure you widen the stays close to equal left and right.
I found a thread for using a spring compressor tool to widen the inside of stays for wider tires. I wasn't able to find anything with techniques for widening dropouts. Do you have a link for a thread I missed?kingfish254 said:
yoothgeye
I build stuff.
Sheldon Brown to the rescue, 2x4 method over half way down:
http://sheldonbrown.com/frame-spacing.html
http://sheldonbrown.com/frame-spacing.html
I wish I had thought to do this originally. It would have been much smarter to do before the bike was painted. ugh.
Well, thanks for the link. I'll give it a whirl!
Well, thanks for the link. I'll give it a whirl!
I don't know if you followed the build, but Navy deployment necessitated the order in which things were done. It's a Christmas bike, so I met that deadline.
I tried the CCR's all-thread tech with mixed results. I modified Sheldon's 2x4 tech. You need a friend and two 2x4 of equal length. Place the 2x4's so one end touches behind the seattube and then on past the dropouts. Each of you grab the ends and pull equally. Anytime you spread a frame you may need to check the allignment on the dropouts.
I may try both methods, and copy all IRT the alignment.
Will the seat stay brace be a problem, or will the bending occur below that brace? I'm guessing it will.
Will the seat stay brace be a problem, or will the bending occur below that brace? I'm guessing it will.
after you widen the stays, take a close look at the drop outs to to make sure they are still parallel. you may need to get creative and make a tool or a guage to check and adjust the angles. good luck!
