15/43 chain touching frame - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 27 (permalink) Old Apr 4th, 2019, 4:46 pm Thread Starter
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15/43 chain touching frame

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?

996 @130hp
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post #2 of 27 (permalink) Old Apr 4th, 2019, 5:00 pm
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Sounds like the chain is too long. Show us some pictures. We love pictures.
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Last edited by Namor; Apr 4th, 2019 at 11:14 pm.
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post #3 of 27 (permalink) Old Apr 4th, 2019, 5:24 pm
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Check the concentric is in the correct position.
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post #4 of 27 (permalink) Old Apr 4th, 2019, 8:05 pm
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we had a 998 years ago that one particular replacement chain rubbed on the inside of the frame above the swingarm pivot. i think something else got fitted and it was ok.

know all wanker
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post #5 of 27 (permalink) Old Apr 5th, 2019, 4:43 am Thread Starter
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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
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post #6 of 27 (permalink) Old Apr 7th, 2019, 3:27 am
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Quote:
Originally Posted by petarr View Post
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

2000 996
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Last edited by Nikk11; Apr 7th, 2019 at 3:36 am.
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post #7 of 27 (permalink) Old Apr 7th, 2019, 2:31 pm Thread Starter
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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.
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post #8 of 27 (permalink) Old Apr 16th, 2019, 3:10 pm Thread Starter
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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!
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post #9 of 27 (permalink) Old Apr 16th, 2019, 3:15 pm
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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?

97 916/996 "The Time Machine"
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post #10 of 27 (permalink) Old Apr 16th, 2019, 4:05 pm Thread Starter
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Quote:
Originally Posted by Namor View Post
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?

https://ibb.co/p2cN44T
https://ibb.co/pzkWGXq
https://ibb.co/3sSyph2
https://ibb.co/LxgQN8F
https://ibb.co/L1f4Cmr

here are pics. seems chain going too high.. because some reason. I installed bearing and washer, as it was in standard sprocket.

rear sprocket have little free play. maybe half mm. also front sprocket have maybe half mm play. not much.

Is this risky to drive? seems chain rub just a little bit..but enough to make it visible on frame

996 @130hp

Last edited by petarr; Apr 16th, 2019 at 4:11 pm.
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