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Frame alignment / dish Help!(5 posts)

Frame alignment / dish Help!Woof the dog
Jun 18, 2002 5:26 PM
When i stuck my old wheel into a cannonsnail (yes, I settled for one, finally), it was closer to the right chainstay and I think seatstay as well. So, what I did was I took the wheel out and put it in backwords, thinking it would be the dish of the wheel. And the alighnment was almost dead on, or at least a lot better than when the wheel is in the right way. Does it mean my wheel's dish is a bit closer to the drive side than it should be? Or is it still a frame thats screwed up? I find it hard to believe a/ the wheel, since a mechanic i trust built the wheel. The guy is over 50 years old and has been doing it all of his life! weird.

If i find another rear wheel, I will try the same thing.

Thanx a lot.

Woof, the dog that believes in cheeseburgers, lettuce and mayo
The frame didn't change.Spoke Wrench
Jun 19, 2002 5:07 AM
The wheel dish isn't spot on. That's not unusual at all. Lots of mechanics rely on the centering feature of Park wheelstands. Unfortunately, the MAJORITY of Park wheelbuilding stands are off. That's why I don't like to let other people use mine and I'm aware that mine isn't perfect either. Why else would Park also sell a wheel dish measuring tool?
The frame didn't change.Woof the dog
Jun 19, 2002 6:25 AM
Hmm. I would think it is the frame because in a normal position the wheel is off to the right (closer to the cogs). If the frame was aligned correctly, I would be able to see the same distance off on the other side when the wheel is put in backwords, b/c it is dished incorrectly. But it doesn't do it to a large degree, it just makes it perfectly aligned between the chainstays and the seatstays. I will go to the bikeshop today to check for the wheel dish.

What do you think about redishing the wheel 3mm toward the nondrive side? Wouldn't it start trailing (behind the front wheel, obviously) incorrectly? I hope I won't need new spokes for changing dish that much.

Thanx a lot for your help

Woof the dog.
The frame didn't change.curlybike
Jun 19, 2002 1:22 PM
Check the alignment of the rear triangle. That may be part of the trouble.
To check frame alighmentNessism
Jun 20, 2002 10:25 AM
I've mentioned this trick before but it bears repeating:

- Clamp your frame in a stand with the rear wheel removed

- Take a long piece of string and tape one end to the outside surface of one of the rear dropouts

- Loop the string up around the headtube and back to the other dropout

- Next, measure the distance between the string and the seat tube on both sides. If the rear triangle is properly alighned, the distance will be the same on both sides.

Good luck.

Ed