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HELP!! Rear Wheel Closer on one side of my TCR carbon team(11 posts)

HELP!! Rear Wheel Closer on one side of my TCR carbon teamtrijunior
Nov 29, 2003 3:16 PM
I just built up my new tcr composite, and when finished, noticed that my rear wheel/rim, is closer to the frame on the left side by about 3mm. Hard to notice, but not very when you know it is there. Should I worry about it? My wheel is also dished properly.

thanks
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamrdbike
Nov 29, 2003 3:23 PM
The cassette side should have a higher tone that the long spoke side. How did you tension you spoke wrench. Did you use a truing stand?
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamtrijunior
Nov 29, 2003 3:30 PM
The wheels are campagnolo zonda. I trued them in a stand and checked the dish with a park dishing tool, so they are dished within about .5mm, not enough to account for the difference of about 3mm.
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamrdbike
Nov 29, 2003 4:06 PM
The truing stand would detect a lateral deviation. Something does not compute. Mabey the two side adustments were out on your truing stand. If my spoke tension is uniform per side then I will fine tune lateral trueness on the stand, after which the wheel almost always dishes out. Dish out after confirming lateral trueness.
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamdivve
Nov 29, 2003 4:08 PM
Mount the wheel with the cassette on the other side. If it's off by the same amount, but on the opposite side it's your wheel or tire even, same side off it's your frame. Three millimeters is too much in my opinion.
bad advice...C-40
Nov 29, 2003 4:42 PM
One thing about this site, you'll get lots of suggestions, many of them bad or irrelevant to your problem.

There may be no problem at all. I assume that you mean that the tire is not centered between the chainstys, near the bottom bracket. What really matters is the frame alignment. Without having it checked, there is no way to know if the off-center condition should cause concern.

Since you are certain that your wheel is properly dished, check the dropouts for an excess of paint or epoxy. An Xacto knife or round file could be used to scrape off all of the paint in the area where the axle contacts the dropout. If this does not fix the problem, you can either just ride the bike and see if you notice any handling problem, or you could look for a shop that has a frame alignment table. Personally, I'd ride it first and not wory about it unless there is some noticeable handling problem.
It's highly unlikely...divve
Nov 29, 2003 5:06 PM
....3mm is going to cause a handling problem. The point is are you as a owner of a top of the line Giant prepared to except it.

BTW, I don't think the owner mentioned whether the wheel is 3mm closer to a seatstay or a chainstay? It's very common to have asymmetry in the chainstays. If it actually is a tracking deviation of 3mm caused by the frame, I certainly wouldn't accept it regardless of whether it causes handling problems or not.

Checking the dropouts is a good suggestion though. The wheel could be skewed by some debris or whatever contamination.
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamKiwi Rider
Nov 29, 2003 7:25 PM
Are you sure you've got the wheel trued with the right tensions? The Campy G3's have different tensions for non-drive and drive side spokes, I'm pretty sure of that.
Otherwise I'm no expert.

Kiwi Rider
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamgtx
Nov 29, 2003 9:31 PM
If the wheel is dished properly I'd take it back to the shop where you brought the frame. You can't cold set AL or carbon. If 3mm is within what Giant considers acceptible you may be stuck with it or the shop may file the dropouts a bit. Otherwise you should get a replacement if you complain enough about it. To be honest I doubt you could tell any difference in the ride, but I wouldn't accept that on a high dollar frame. All my bikes are spot on, but then they're all hand built steel.
Wheel in the dropout...rwbadley
Nov 29, 2003 10:35 PM
it only takes a fraction at the axle to show a larger differential at the rim.

If you loosen the QR do you find any play forward/aft in the axle/dropout that could explain your 3 mm? Is there a chance of a bent axle?

Is it possible the chainstay design gives this appearance?

I think this amount will not be noticeable in the ride, I would look into it tho'.
re: HELP!! Rear Wheel Closer on one side of my TCR carbon teamrdbike
Nov 30, 2003 5:24 AM
3mm is to much deviation. There is a problem and it needs to be fixed. I would take the wheel to a good builder first and have them work check it and re true. After that it could be the frame.