De-Lacing a Rim

[hamster]

I think that all Shimano non disc hubs are the same - certainly M563 and M750 are the same.

Shimano used the same Alu body for all the hubs each year as far as I can see - the only difference was the polishing.

 

[fatfixie]

If the wheel is overtensioned and you cut the spokes you can warp a rim.

Andy

 

[utahdog2003]

Almost as hard to cut everything to pieces as it is to take the time and unlace the wheel the right way. Just take the wheel apart with a spoke wrench and a speed wrench/nipple driver.

Never use used spokes on a wheel build where the hub is different. If you were lookng to detension the wheels and relace them with new rims but the same hubs, where the wheels were never completely apart, then I'd be less worried about used spokes. Completely disassembling a wheel and reusing the spokes for a rebuild, especially on a wheel with some miles on it, is not good. Used spokes in a wheel, asked to serve in a different position than originally laced, seems problematic to me.

For your project TallPaul, I'd rather use new spokes.

 

[Tallpaul]

For your project TallPaul, I'd rather use new spokes.

I was thinking of stripping the M230 rims from the old wheel, lining them up and taping them to the M900 wheels, then transferring the spokes to the new rim, one at a time. Then having my LBS do the final tension and true.

This was a method I had seen recommended to 'easily' replace a worn rim with a new one. Would you suggest that this would not work for replacing one used rim with another?

 

[MikeD]

Used spokes in a wheel, asked to serve in a different position than originally laced, seems problematic to me.

I wouldn't reuse spokes out of a wheel that had repeatedly bust spokes due to being badly built. But if they've all stayed intact for the life of the hub/rim and aren't gouged, I can't see a problem. I've used lots of used spokes in wheel builds. Used hubs relaced with spokes in a different position, now that's asking for trouble.

Tallpaul, taping the rims side-by-side and moving the spokes over will work a treat.

 

[FluffyChicken]

<2x post>

 

[FluffyChicken]

Personally I would undo each one a turn all the way around and keep doing that, it doesn't take long and does keep the stress away from the rim, after a few turns the spoke will not be under tension and you should be able to unscrew by hand. You may want to spray the end with WD40 or similar and let it soak a bit to make it easier.

Only cut the spokes that the nipple will not turn on, but only then at the end.
230TIB's are not the strongest rim in the world

Also never cut them on these posh Ti HOPE hubs or similar, the prang can send a crack down the flange. Just ask the person who did it on the hubs I bought them from.

Shimano's old hubs will cope though.

Oddly I just took a 230TIB of a XTR M900 hub.


Tallpall, also don't bother with the matching up and lacing lark. it's easy enough to do the initial lace yourself. Infact I would say it's easier.
(See PM)

 

[utahdog2003]

For your project TallPaul, I'd rather use new spokes.

I was thinking of stripping the M230 rims from the old wheel, lining them up and taping them to the M900 wheels, then transferring the spokes to the new rim, one at a time. Then having my LBS do the final tension and true.

This was a method I had seen recommended to 'easily' replace a worn rim with a new one. Would you suggest that this would not work for replacing one used rim with another?

That's how I'd do it. Using the spokes from the existing M900 wheels in their current position, just replacing the rim.

 

[utahdog2003]

dp

 

[FluffyChicken]

dp

But that would depend on the RIM on on M900 wheels, spokes may not be the correct length.