| Author | Message | ||
     34nineteen |
It has staining (likely from brake dust) and the chips you'd expect from a 10-15 year old bike, but she is straight and true. $75+shipping  | ||
| Chazaag |
holy cow- look at that 1.75 ounces on there! I send you a message. Shipping to 53548 | ||
| 34nineteen |
I've been seeing that more and more lately. My other XB front wheel also has a bunch of weights on it, and IIRC my previous XB had a bunch when I bought new tires. You'd imagine that they would just remove the tire, rotate 180 and try again, but this is probably the quick and easy way of getting it done. Or maybe its just cheap tires being used. Anyhow, I pinged you back. | ||
| Mr_obsessive |
2nd dibs | ||
| _buelligan_ |
Be weary when you see too many weights on a rim, but doesn't always mean the rim is bad. I agree with 34nineteen to turn the tire, we have had plenty of techs in the past who wouldn't spend the time to find the least amount of weights needed and many other places the same. Most techs don't care about aesthetics or eyesore of too many weights, just get it done as quickly as possible within a certain amount of accuracy allowed by the shop. Also the Buell service manual states in there not to exceed 1 ounce of weight for the front and 2 ounce for the rear, reposition tire to drop below those amounts or replace rim if you can't. I hate the eyesore of weights so I usually will spin the rim by itself and find the true heavy spot first. I have put two different brand new front Uly rims on our digital balancer and both heavy spots you would think would be around the valve stem but they actually were about 6-8 inches from the valve stem on both so if the tech is assuming the valve stem is the heavy spot its already off to a bad start, at least on those rims which have a steel reinforcement insert for off-road bumps. | ||
| Screamer |
I know it’s not important because the wheel will be rebalanced when a new tire is installed, but the weights are on the wrong side of the rim - should be only on the disc side. | ||
| Shoggin |
Why would you think that? | ||
| Screamer |
That’s what the service manual specifies. The XB wheel and tire combination where one of the lightest (Production) front assemblies ever offered at the time of the XB release. Because of the light weight of the wheel, and the size of the disc, the disc now had a larger impact on wheel balance. Putting weights on the non-disc side of the wheel could cause the wheel to want to wobble at speed, which in turn would cause the handlebars to oscillate. The explanation we used : Think of a barrel spinning on a horizontal axis, and it’s out of balance on one end. You add a counterweight on the same (out-of-balance) end, and it runs true. If you add a counterweight on the opposite end, the barrel (when spun) will push on one end of the axis and at the same time pull on the other end (because the heavy spot and the counterweight are opposite of each other). The barrel will wobble - even though it has been “balanced”. Most aftermarket tires were slightly heavier, and desensitized the assembly to wheel weight location. But some XB s and ( certainly some riders) are more sensitive to wheel weight placement than others. | ||
| Shoggin |
Sooo. Dynamic balancing. Makes sense. I didn't figure that the super narrow 3.5" front wheel width would be enough to matter at all, thats an awfully short barrel! Thanks for clarifying  | ||
| Screamer |
Static balancing also works, but the weights need to be placed on the disc side, regardless of the balancing method used. Yes, the wheel would be a “short barrel”. If I remember correctly (always suspect) the original XB tire was developed as a lighter than normal tire, (specifically for the XB). There were a few dealers at the time that had race teams that were trying heavier tires to experiment with the dynamics of the front end. Occasionally, we’d have a dealer struggling with an XB coast down wobble. Often the cause was an OEM tire replacement with weights placed on the non-disc side. | ||
| Zacks |
So is it the same wheel weight/side requirement for all ZTL front wheels? | ||
| Shoggin |
I would assume so, as they are all the same wheel. My balancing beads still work wonderfully  | ||
| 34nineteen |
Ryan at F9 would be very disappointed in you, eh! Then I’ll catch you putting car tires on the rear. By the way, for reference here is my other front wheel.  |
