Is it possible to relace a BMX hub into my 700c rim
The 700c is laced into a Shimano Parallax 32h (16 spoked each side) hub. I would like to relace it into a 48h (24 spokes each side) hub. Its a BMX hub from an Alex rim. My friends said you are able to but you have skip some holes. I was wondering if its possible or stable. Please help, I broke the bearing cup of the Shimano hub and also if there is any fixes for that?
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Last edited by MarkTMO; 08-01-11 at 08:32 AM.
Can't you buy a new bearing set? My bikes are all cup and cone, so it's easy.
Otherwise, I've seen hubs laced to rims with different spoke counts, but I don't know what the limits are or how tricky it is. A good bike shop should be able to help.
Originally Posted by Velo Dog
Well the cup that holds the bears went all the way down the hub next to the freehub body. I pulled it back to its original spot but it just go back down went reinstall the axle back.
And what do you mean by cup and cone?
Insane Bicycle Mechanic
Possible? Yes. Stable? Maybe. Would I do it if I were you? Nope.
Originally Posted by MarkTMO
First off, how many spokes are in the 700C rear wheel? You say it's 24 spoke, but then 14 per side... that would make it 28 spoke. Which is it? A 24 spoke rim can be laced to a 48 hole hub by skipping every other spoke hole, but that's not a wheel I would want to ride on- too few spokes, not enough strength. The built-up wheel doesn't look like anything from Shimano, anyway.
You will be better off buying a pre-built wheel from a bike shop. These are usually cheaper than trying to piece together something from parts you've scavenged off of other bikes, especially if you don't know how to build bike wheels. You'll end up with a usable wheel more cheaply, more quickly, and with a lot less hassle.
It looks to me like there's a lot of stuff going on here.
1. What is the dropout spacing of your bike frame? The first decision is whether your proposed hub will fit your frame.
2. Building a wheel is a fair amount of work. Unless I'm working with components that are all in good condition, it isn't worth it to me. Old rims are usually warped which makes them hard to true and impossible to make into a really good wheel. I'm also doubting whether your hubs are worth the effort.
Factory built wheels are very reasonably priced. I have the ability to buy most bike parts for wholesale prices. Even at that, it's generally economical for me to buy a complete factory built wheeo than to buy the components and lace up the wheel myself.
3. Don't expect the spokes from your existing wheel to work with your new hub.
Sorry its not a 24 spoke rim. Its actually a 32 so if I skip every third it could lace. I brought it to my LBS and said its stable to skip every third. They ask if they would build it but its expensive. So I might as well ask my friend who's worked on bikes for about 10 years now.
Sorry about double post, I was able to lace it correctly and its stable.