[OLDDog65]

Just finishing with the build and when we were doing the plug chops out on a country blacktop i noticed the atc pulling to the right i figured it was an air pressure difference in the rear wheels but when i made sure both were equal it still did it. I had a 250sx last year that did the same and the front forks were tweaked a little bit and i loosend every thing up and put a bar in between the forks and twsted to fix i i dont think this is the same problem.everything is new on the front end of the 250r forks just were rebuilt with new progressive springs ,gold valve emulaters and the rear shock is fresh too . Anybody have any ideas how to fix this

 

[acecarlos]

Just finishing with the build and when we were doing the plug chops out on a country blacktop i noticed the atc pulling to the right i figured it was an air pressure difference in the rear wheels but when i made sure both were equal it still did it. I had a 250sx last year that did the same and the front forks were tweaked a little bit and i loosend every thing up and put a bar in between the forks and twsted to fix i i dont think this is the same problem.everything is new on the front end of the 250r forks just were rebuilt with new progressive springs ,gold valve emulaters and the rear shock is fresh too . Anybody have any ideas how to fix this

A few possibilities:

One tire is bigger than the other (RO), even if air pressure are set equal to each...change tires Left to Right; check and see if it pulls off to the opposite side.
Swingarm bent or not aligned
Frame bent or not aligned side to side or in height
Fork Oil volume not the same for each fork
Forks, Tree or Frame Nose Bent

Carlos

 

[OLDDog65]

I am sure fork oil is correct i had them professionaly rebuilt ,how do you align the swingarm i think i know how to check ifind a point on the frame on both sides and measure to the axle . i will swap the tires first and go from there . I will call the suspension guy and see what he says and i can put the old tires and rims on and try them but i did swap frames because the original had major damage to the subframe and grab bar mounts and was welded in a crappy way . Lol every time i think all the issues are done i find new ones but i guess if you want every thing easy just go buy the same old thing that anybody could brand new off the showroom floor i like having 35 yr old stuff that runs as good or better than new Thx for your input at least i have a directioin

 

[B.FRANK]

use a cloth tape measure and inflate to same tire circumference( so that each wheel travels the same distance per rotation) also paved roads are higher in the center than on the sides. (this is called a crown and it is for drainage) if you rode street bikes you would notice that the left side of your tire wears quicker than the right side. try coasting on level dirt or in a parking lot and you may find that there is nothing wrong at all( fingers crossed)

 

[Cold Slither]

Yes, cloth tape measure. Back during the tire wars it was very important to get that right and of course when racing cars with bias plies on asphalt. Quad people racing MX, woods or riding recreational seldom have to think about this these days but in TT it's still important.