Just finished the 02 bike with the 250 rear that had a terrible high speed wobble at 100 to 120 all the time. Tony (the owner) said the bike was no fun to ride at faster speeds because he was scared he would loose it. He also said he didn't drive like that much but would like to be able to if he wanted.
The first thing I checked was the rear wheel tracking with the front. I used a 16" laser level (I got from Kragens for, $4.99 after rebate) and found out that the rear wheel was cocked 3/4 of an inch. After installing the wheel I got it dead on with the laser. The next thing I did was check the steering head torque and it was 45 lbs. I loosened the 3 pinch bolts and brought it to 70 pounds but the steering still felt loose but the book calls for 60 so I stopped. The belt was off center so I had to adjust the front pulley over a 1/4 inch to get the belt close to center. This is one of the pulleys that Marv sells and has no side rings.
End of story Tony called me and said he felt like he had a new bike because no wobble at all speeds up to 135 MPH and said he didn't understand why, but it seemed to handle like a smaller bike at all speeds, even at slower ones.
I checked mine Saturday and found it to be 1/2 inch off so that is the project for the day.
Tony was told by some powers to be, that the wobble was a problem with the change of wheels and tires and he could have only looks or performance but not both.
Adrian
The first thing I checked was the rear wheel tracking with the front. I used a 16" laser level (I got from Kragens for, $4.99 after rebate) and found out that the rear wheel was cocked 3/4 of an inch. After installing the wheel I got it dead on with the laser. The next thing I did was check the steering head torque and it was 45 lbs. I loosened the 3 pinch bolts and brought it to 70 pounds but the steering still felt loose but the book calls for 60 so I stopped. The belt was off center so I had to adjust the front pulley over a 1/4 inch to get the belt close to center. This is one of the pulleys that Marv sells and has no side rings.
End of story Tony called me and said he felt like he had a new bike because no wobble at all speeds up to 135 MPH and said he didn't understand why, but it seemed to handle like a smaller bike at all speeds, even at slower ones.
I checked mine Saturday and found it to be 1/2 inch off so that is the project for the day.
Tony was told by some powers to be, that the wobble was a problem with the change of wheels and tires and he could have only looks or performance but not both.
Adrian