I can detect no bends in the rim at all-- it is “perfectly straight” as
far as I can tell. But the tire wobbles back and forth +/- .05 inches and
nicks the frame, slowly cutting into the aluminum. Is this a manufacturing
defect in the tire (24" Gazz), or is it just not seated perfectly on the
rim? I suppose I should mark the tire with yellow chalk, rotate it on the
rim, and see if it’s the same section of tire that always rubs.
If it is a seating issue, would silicon spray on the tire bead help?
Chris Reeder <reed8990@uidaho.edu> wrote in message
news:<3BAF90EE.32050FA5@uidaho.edu>… > I can detect no bends in the rim at all-- it is “perfectly straight” as > far as I can tell. But the tire wobbles back and forth +/- .05 inches > and nicks the frame, slowly cutting into the aluminum. Is this a > manufacturing defect in the tire (24" Gazz), or is it just not seated > perfectly on the rim? I suppose I should mark the tire with yellow > chalk, rotate it on the rim, and see if it’s the same section of tire > that always rubs. > > If it is a seating issue, would silicon spray on the tire bead help? > > Chris Reeder
I’ve had this problem before on my bike and it was a problem with the tyre
not being seated properly. In my case I just let down the tyre and
straightened it up a bit then reinflated it. It still wasn’t perfect but
it was near enough, a bit more patience than I had and you should be able
to get things just right. I don’t think using silicon spray would help
things, it may fix the seating problem but you may find that it creates
problems with the tyre spinning round the rim under load. That last bit is
just a guess, but it is something to consider.
ive had the same brob with my bike i found it was a slightly buckled wheel
take off the tyre get a spoke spanner loosen all the spokes then do them
up again, you have to make sure you do them all up the same amount and bit
by bit, ie do each one up a little going round the wheel this should
staighten up the wheel
Somewhat in line with what the last person said, it’s possible that your wheel is not true.
If this is the case, then all you have to do is get a spoke wrench and then adjust the spokes on the portion of the wheel that is out of true (the portion that wobbles or doesn’t spin perfectly right).
Doing this adjustment, or truing the wheel, shouldn’t be that hard. In the portion that you’re working on, you’ll want to tighten a little half the spokes (clockwise turn) and loosen a little the other (counterclockwise turn). The spokes that you loosen are the ones on the side of the wheel that is coming closest to the inside of the frame. The spokes that you tighten are the ones on the side of the wheel that is pulling away from the inside of the frame.
So, if the wheel wobbles to the left when you spin it, the spokes on the right side (in this wobble section) have to be tightened, and the spokes on the left side (in this wobble section) have to be loosened.
It’s a wheel I just built. It’s true. But I shifted the tire in the frame
a bit and it’s not rubbing anymore, so I’m happy.
Chris
dave379 wrote: > > Somewhat in line with what the last person said, it’s possible that your > wheel is not true. > > If this is the case, then all you have to do is get a spoke wrench and > then adjust the spokes on the portion of the wheel that is out of true > (the portion that wobbles or doesn’t spin perfectly right). > > Doing this adjustment, or truing the wheel, shouldn’t be that hard. In > the portion that you’re working on, you’ll want to tighten a little half > the spokes (clockwise turn) and loosen a little the other > (counterclockwise turn). The spokes that you loosen are the ones on the > side of the wheel that is coming closest to the inside of the frame. The > spokes that you tighten are the ones on the side of the wheel that is > pulling away from the inside of the frame. > > So, if the wheel wobbles to the left when you spin it, the spokes on the > right side (in this wobble section) have to be tightened, and the spokes > on the left side (in this wobble section) have to be loosened. > > Hope this maybe helps, > > Dave > > – > dave379 Posted via the Unicyclist Community - > http://unicyclist.com/forums