OzVMX Forum

Marque Remarks => Yamaha => Topic started by: Paul552 on December 23, 2012, 09:35:21 pm

Title: Rear sprocket bolt pattern and std ratio?
Post by: Paul552 on December 23, 2012, 09:35:21 pm

Is the bolt pattern unique on the old yamahas or are they interchangeable ?

To many beers to go out and pull the rear off but after a few I have come to the conclusion that I should add a few teeth from 49 to 51.

Off to MCA in the morning so if anyone knows if they are interchangeable you will save me waking up early to pull it off :) ???

Thanks

Can anyone let me know the std gearing? Is it 13:49 ?

Title: Re: Rear sprocket bolt pattern interchangeability yz125d
Post by: Nathan S on December 23, 2012, 10:08:28 pm

Same pattern as twin shock DT250/360/400, YZ125A,X, E, F, IT125, IT175D/E/F, MX125/175 and all AT1/CT1/DT125/175.

However, only the IT125/175s and YZ125X~F have the right combination of 520 chain and 10mm mounting holes.

Early TS185 (and 125?) look the same but are different.

Title: Re: Rear sprocket bolt pattern interchangeability yz125d
Post by: Paul552 on December 23, 2012, 11:28:26 pm

Quote from: Nathan S on December 23, 2012, 10:08:28 pm

Same pattern as twin shock DT250/360/400, YZ125A,X, E, F, IT125, IT175D/E/F, MX125/175 and all AT1/CT1/DT125/175.

However, only the IT125/175s and YZ125X~F have the right combination of 520 chain and 10mm mounting holes.

Early TS185 (and 125?) look the same but are different.

Thanks Nathan

I think I better wake up early a take it off :)

Thanks for the heads up

Title: Re: Rear sprocket bolt pattern and std ratio?
Post by: Paul552 on December 27, 2012, 10:21:08 pm

Can anyone tell me the stock ratio????

Thanks in advance

Title: Re: Rear sprocket bolt pattern and std ratio?
Post by: Iain Cameron on December 27, 2012, 11:03:40 pm

for which Yamaha ?

Title: Re: Rear sprocket bolt pattern and std ratio?
Post by: Iain Cameron on December 27, 2012, 11:04:44 pm

Yz d and e where 51/12

Title: Re: Rear sprocket bolt pattern and std ratio?
Post by: Paul552 on December 28, 2012, 09:02:29 am

Quote from: iainyz on December 27, 2012, 11:04:44 pm

Yz d and e where 51/12

Thanks Ian
Mine has 13 49 no wonder it feels long.

Thanks again