Bike Forums (https://www.bikeforums.net/forum.php)
-   Bicycle Mechanics (https://www.bikeforums.net/bicycle-mechanics/)
-   -   Wheel true question (https://www.bikeforums.net/bicycle-mechanics/1198874-wheel-true-question.html)

 shine2000 04-21-20 12:12 AM

Wheel true question

i noticed that on my wheel there is 1 spoke that is loose compare to the other spokes....it is on the left side of the hub or wheel also but i also know that if you tighten it or loosen it you have to do the other side too....how would i go on about this?

 branko_76 04-21-20 12:35 AM

Originally Posted by shine2000 (Post 21430443)
i noticed that on my wheel there is 1 spoke that is loose compare to the other spokes....it is on the left side of the hub or wheel also but i also know that if you tighten it or loosen it you have to do the other side too....how would i go on about this?

Is the rim true? How many spokes does it have?

Generally speaking, if you tighten two adjacent spokes, one on each side of the hub, you risk creating a flat spot in the rim.

If the spoke in question is considerably looser than the others, try tightening it slowly and make sure it doesn't pull the rim with it. You can do this by having that portion of the rim next to the brake pad for reference.

There are too many nuances to trueing a wheel to explain here, my advice is to go slow and somehow keep track of which spokes you tighten and how many turns.

 cpach 04-21-20 12:56 AM

That you need to tighten on one side and loosen on the other is a bit of an oversimplification. You want to improve tension balance when truing a wheel. When there's a spoke that's low in tension and the rim is pulling away from that side probably the truing should be done just by tightening that spoke, as the nipple has unwound bringing the wheel out of balance and subsequently out of true. If you have an OK sense of relative pitch you can judge relative tension with high accuracy by comparing the tones of the two spokes. This doesn't work between sides of a wheel. Try to make adjustments to spokes that are outliers in tension in ways that would cause the deviations you are seeing.

 Drew Eckhardt 04-22-20 07:13 AM

Originally Posted by shine2000 (Post 21430443)
i noticed that on my wheel there is 1 spoke that is loose compare to the other spokes....it is on the left side of the hub or wheel also but i also know that if you tighten it or loosen it you have to do the other side too....how would i go on about this?

It depends on why the spoke is loose.

If the rim is offset away from the spoke you need to tighten it until the wheel is straight because it didn't have enough tension to keep the nipple from unscrewing when it passed the bottom of the wheel and unloaded. If its neighbors on the same side are tight you need to loosen them and tighten it more. If all the spokes on that side are the same tension they all must be tighter, with the opposite side tight enough to keep the rim centered.

If the rim is offset towards the spoke you need to tighten it and loosen the neighbors on both sides because the rim is bent. If tension would be too high you'll need to loosen the spokes and bend the rim back.

You're aiming for a true wheel with uniform tension within each wheel side, but need to compromise a bit on tension and/or radial true because of slight bends and a possible stiff spot at the rim joint.

 pdlamb 04-22-20 07:34 AM

If it's almost finger-loose, or you can wiggle that one tire, just try bringing it up to the tension of the spokes on either side of it. It may rattled loose, and if you caught it early, a stout rim will take a while to deform.

If that doesn't work, you may have to re-true, re-tension, and stress relieve the whole wheel. Try the easy out first.

 All times are GMT -6. The time now is 06:10 PM.