Rear wheel offset? Wheel building type question?

[JediPaddler]

Just sarted building up a new single speed bike based on a Cannondale m400 frame. Fitted the rear wheel and found the rim offset to the none drive side by about 10mm. I haven't used the wheel before bought it off here ages ago. Checked it with my dishing gauge which confirmed the wheel is offset by about 10mm to the left.

Just wondering could I redish without having to alter spoke lengths?

Or

I have noticed there is a 10mm spacer on the none drive side of the axle, which I think is where should be, but could I just reverse the axle? May be easier than redishing the wheel.

Interested on your thoughts.

Cheers.

 

[bm0p700f]

If you can move the spacer and get the rim centred between the lock nuts then fine. You should not have to alter spoke lengths to dish a wheel if the right spokes have been used in the first place.

 

[biglev]

mm it depends.

Pics would help. it is possible that the axle was assemble incorrectly.

As for re dishing the wheel. 10mm is quite a lot and it depends how the wheel is built. how does the wheel look? is the rim over the drive side of the hub or is it pulled over to the none dive side. if its over the drive side then it may be your axel set up. if it over to the none drive side you may need a rebuild.

but a photo would help. other opinions welcome.

 

[JediPaddler]

Thanks for the quick replies. Just tried moving the spacer to the other side. Missed the obvious problem. Moving the spacer just made it worse

I can only think the wheel has come from an offset frame. I'm going to try redishing alternatively I may just rebuild it with new spokes after carefully measuring the rim and hub.

It's over to the none drive side.

The rim is a Vuelta USA and the hub shimano FH-RM40. It's only a cheap and cheerful wheel.

 

[hamster]

One possibility is that the wheel has been laced up wrong with the short spokes on the left and long on the right... :roll:

 

[bm0p700f]

Well if moving the spacer does not work then its LBS time unless you have a truing jig. The trick is to dish dish the wheela nd still have the correct spoke tension. You could dismantle meaure the hub and rim and calaculate spoke lengths to see if you have the right ones or just tryi dishing but if you have good spoke tension already then adding more tension to one side or removing it from the other to move the rim is not going to do the wheel any good.

Take it to a good LBS or post it to me.

 

[JediPaddler]

Thanks for all the responses. I have re-dished it for now. Take the point about spoke tension though. I think long term I'll bin the spokes, which ain't great anyway, and start again with correct spoke lengths. I have built wheels once or twice before so happy to give it a bash.

 

[bm0p700f]

Good show. Always good to see people giving a go it the only way to learn.

 

[ishaw]

I had a simar issue and moving the spacer did work for me, though actually I may have added a spacer rather than swapping them over. Good work on the re dishing, I always get so far with wheels then let an expert to finish them off.