08-14-2005, 07:16 AM
I've had awicked shake in the front end of my'02 1000 for a while now. When I bought the bike new, with the stock bridgies on it it had approx.2 oz of weights in the front. Put on pilot powers and had 'em balanced. only took like .75. Cool. went to Pocono FUSA this weekend and the front started shaking like crazy after 95mph. WTF. Took off the wheel and had it rebalanced on a snap on balancer. It took 2.75 oz's. WTF. I was told that it is possible that the wheel itself is out. 2.75 is ALOT of weight. If the wheel is out of balance, how do they fix this? Do they put weights on the inside of the rim? Anybody balance the wheel then balance wheel+tire?
08-14-2005, 03:16 PM
Tires are extremely accurate these days. Sounds like a problem with your wheel??
08-14-2005, 07:58 PM
That's what I was told.Any idea how the wheel balancing is done? Do they put weights on the inside of the rim,remove material?
08-14-2005, 08:48 PM
I highly doubt the wheel is out of balance unless you notice some damage on it. The wheels are unbalanced if you dont have a valve stem on the wheel. As far as your wheel, you rebalanced a used tire. Of course its not going to balance as a new tire, once a tire hits the ground it will evetually wear different, from wheelies, taking turns and front gets pushed the tire carcass will shift.
I would take apart the front end, check your wheel bearing, check your rotors make sure there true, and check your head set bearing. Snap on isnt a good balancer as manually/static balancing. If you get such a heavy weight I would break the bead loose and spin the tire so it balances with minimal weights.
You DO NOT want to shave weight off the wheels, you will ruin its overall structure.
08-15-2005, 03:49 AM
One thing you may want to look into is a new or newer technology of injecting a powder or silicate into the tire. As the wheel turns is "fills" in the uneven spots due to centrifical force. It's more common on trucks, but I know that people are starting to use on their cars and a couple of people have used it for their bikes... both usually have really nice wheelsets that they don't want marred with weights. I don't know a whole lot about the technology, but it appears to be in use and working.
08-15-2005, 02:22 PM
Just as a reference, the first day I had the PP on the bike that I went over 95mph was at the track. I noticed the vib or shake on those 2 track days(2 at Summit Jefferson) and the 2 days at beaverun. the 3rd(half through Pocono FUSA) I had the front re-balanced. No vib or shake. I heard and have seen there is no reference mark for a valve stem on PP's due to the Manufacturing process being "state of the art" http://www.gixxer.com/forums/images/graemlins/confused.gif
08-15-2005, 03:52 PM
Gixxers are real finicky on the steering head torque. I would start there.
08-15-2005, 04:21 PM
New tires require a "break in period" right,? That wouldnt have anything to do with it? I was told to take it easy for about 100 miles when I first got my bike and when I was going to get new tires.