250 mk3 chain length

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Scottish888
Posts: 266
Joined: Wed Feb 07, 2018 1:47 am
Location: Edinburgh, Scotland UK

250 mk3 chain length

Postby Scottish888 » Thu Sep 12, 2019 11:16 am

Can anyone tell me the correct chain length for a 1974 250 mk3 please.
I have a standard 17 tooth front sprocket, did not yet count the rear but assume it is standard
Not sure if the old chain on my bike is correct or not but I counted 61 outer links, so 122 links?

Regards
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Jordan
Posts: 1470
Joined: Fri Dec 24, 2010 11:29 am

Re: 250 mk3 chain length

Postby Jordan » Thu Sep 12, 2019 11:15 pm

250chain.png
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ducwiz
Posts: 604
Joined: Tue May 22, 2012 12:52 pm
Location: near Frankfurt, Germany

Re: 250 mk3 chain length

Postby ducwiz » Fri Sep 13, 2019 6:42 am

Some useful tools to calculate chain length:
http://borbon.x10host.com/index.php
https://www.rbracing-rsr.com/chainlength.html
http://www.botlanta.org/converters/dale-calc/sprocket.html

..
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Scottish888
Posts: 266
Joined: Wed Feb 07, 2018 1:47 am
Location: Edinburgh, Scotland UK

Re: 250 mk3 chain length

Postby Scottish888 » Fri Sep 13, 2019 11:06 am

Thank you folks :)
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Scottish888
Posts: 266
Joined: Wed Feb 07, 2018 1:47 am
Location: Edinburgh, Scotland UK

Re: 250 mk3 chain length

Postby Scottish888 » Wed Sep 25, 2019 3:49 pm

bike has a 17 front, 44 rear. I fitted a 122 link chain
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