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15/43 chain touching frame

3K views 26 replies 8 participants last post by  Nikk11 
#1 ·
Today I put 15 43 gearing. rear is quick relase. both sprockets are JT. bike is 996 1999.

and I went drive, and over bumps I had loud clanking noise. also upshifts seems louder.

after drive I saw that frame (not swingarm) was grinded slightly , as chain rub on it.

I put 525 zvmx chain , which is around 1 mm thicker.


Will play with ecentric thing (chain tenson adjustment) help? to put it maybe lower (at 6 o clock)?

Also, how much mm have standard chain , clearance from frame?
 
#5 ·
https://ibb.co/mNN76Ly
https://ibb.co/DgShqbN
https://ibb.co/3c9YJsD

It seems ita combination of 1mm thicker chain, and bigger rear sprocket And work frontsprocket plate (with two bolts).

can somebody send me pic or tell me hoe much clerance he got on his 996 (chain/frame clerance). thanks
 
#6 · (Edited)
https://ibb.co/mNN76Ly
https://ibb.co/DgShqbN
https://ibb.co/3c9YJsD

It seems ita combination of 1mm thicker chain, and bigger rear sprocket And work frontsprocket plate (with two bolts).

can somebody send me pic or tell me hoe much clerance he got on his 996 (chain/frame clerance). thanks
My 2000 996 has 4mm between the chain rivet & the frame.
Stock gearing 15/36 , 94 link DID 525 chain
 
#7 ·
thank you ! I appreciate your answer. I have 1mm clerance. so it can be because thicker chain and front sprocket retainer worn/rear quick charge sprocket left-right play (~1mm).

Ok, I think I will go to vx chain, instead fat zvmx.

btw 15-43 bike is sooo much nicer to drive in city.
 
#8 ·
I have hard time solving this problem.

So.. I put 15/43 gearing.

Chain is did zmvx 98 links.

tension is 25mm as recomended.

tension is at 4-6 clock.

and chain still slightly rubbing the frame (not swingarm).


Can someone please measure chain width (standard chain), at widest point (pin/link), not rivet link,as rivet link seems a bit narrower than other pins.

thanks in advance!
 
#9 ·
I cannot b/c mine is not stock.

It sounds like the rear sprocket assembly is out of line. As if it is stacked too thick and so moves the carrier out too far. Can you provide have a close up of thread count at the carrier nut and an additional picture of the back side of the carrier to show the space between the carrier and the swing arm?
 
#10 · (Edited)
#13 ·
touching frame...

maybe check your chain alignment, rear sprocket has moved out from center of wheel?

rubbing the frame is not how it was designed....

Fred
 
#24 · (Edited)
2004 999: flat side is installed outside, like your picture showing.

https://ibb.co/mzLHTdH



xracer: old chain was veery loose and worn and it rubed also. but then I repaint area, and now also rub. old chain was 525HV. 23mm wide.


you can notice on picture how chain rub only when jump up. https://ibb.co/TBJFggb

chain rub veery slightly : https://ibb.co/2gcvXB9



miolta, how can I install it correctly ? I just put it on shaft and install retainer and two bolts.

edit: just tried both position for standard and JT sprockets. It was allredy in good position.

It seems 23mm chain is too thick.
 
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