[Kntr]

The spring on the rear shock is bowing and hitting the shock body. The shock is 1.65" stroke and I am running a 1.85" spring. So I tried another spring 1.95" stroke and the exact same thing is happening. The spring is bowing and hitting the shock body under full compression. The bike is a 2000 Big Hit that my wife rides with a Pushed Fox Vanilla R. The shock and spring are stock. HELP.

 

[zedro]

the spring might not be centered on the collar (they always arent perfect fits). I used o-rings to keep mine centered

 

[Kntr]

Its centered..... The DU bushings are new. I just put all new hardware in. What else? Maybe I am over tightening the bolts at the eyes????

 

[zedro]

Its centered..... The DU bushings are new. I just put all new hardware in. What else? Maybe I am over tightening the bolts at the eyes????

well, then it might simply be the spring itself

 

[Kntr]

I just bought a used spring from PUSH and my wife road the bike 3 times and now the spring is doing the same thing. I guess since it was used it could be bad too. I guess Ill get another one and try it too.

 

[The Rose]

I have had this problem, the spring is bowed due to spring bind. either the spring is the wrong weight or you just hit something extra big and bottomed the suspension. When the spring is compressed all the way the energy that was compressing the spring now acts on bending the spring and thats why its rubbing the shock body.

 

[Kntr]

Thanks. I think its the wrong weight....

 

[Brian HCM#1]

Or the spring could just be defective to start with.

 

[auntesther]

I had that problem on emy shock and it was from too little preload..the spring would shift under compression until I added a bit or preload

 

[joelsman]

I had an old dual shock dirt bike that made a lot of grinding noise when the suspension cycled due to spring rub, long skinny shocks and long skinny springs.

you could also put something like zip ties around the middle coil, so the zip ties would rub instead.