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how out of true is too much?(3 posts)

how out of true is too much?wulf
May 9, 2002 8:56 PM
I've got Mavic CXP wheels, and my rear wheel is out of true a bit. Not enough to rub the brake pads, which probably have more clearance than they should have anyway (yikes). Probably a 1/16" wobble.

Is this dangerous? I don't know how to true a wheel, though I'd like to learn (not asking about that now...I'm getting a book), but I don't even know how bad a problem I have, or how much worse it's going to get, and how fast. I rode 35mi. tonight, without problems, but this can't be good....

Thanks for the help.
re: how out of true is too much?Uncle Tim
May 9, 2002 10:39 PM
Some folks have more tolerance for lack of trueness in a bicycle wheel than others. I don't think there is any absolute standard outside of the one you indicated: gentle rubbing of the brake pads. I my wheels get noticable wobble in them, I put them on a stand and true them. It's therapeutic.

As long as the spokes have proper tension, then the out of true factor is not one of safety. They will ride fine with a little wobble. It's just annoying to look down and key in on that imperfect wheel as it revolves.

Truing a bicycle wheel is not the hardest thing in the world, but it does take practice. Actually, it's easy to move the wheel to true. The trick is getting proper tension on the spokes to make a round and true wheel that is properly dished. It may sound complicated - and it may be tedious - but I think that anyone with a modicom of mechanical ability plus a problem solving mentality can learn to ge pretty good at it.
it's all personaljw25
May 15, 2002 6:25 AM
As long as you're not rubbing the pads, I'd say wobble isn't dangerous. With wheel and frame flex, you might get some rubbing while cornering, but the CXP-series of rims are pretty stiff, so it should be minimal.
I'd keep an eye on it, and if you notice the wobble getting worse, use this as an opportunity to learn truing - it's kind of fun, and may lead you down the dark path to wheelbuilding.
The best way to learn is taking a sixer of good beer to your LBS, and watching them true the wheels (might as well do both while you're there). You can try it on your own, but from experience, it's best to watch a pro first.
As was mentioned, even tension is more important than perfect true, and relieving spoke windup is key as well. In fact, of all the wheels I own, only a couple are perfectly true laterally. All the others, while true radially, have some sort of wobble, due to imperfect extruding or joining of the rim. None have failed so far, and this includes mountain bike wheels that get crashed hard at times, so breathe easier for now.