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Chain slack

Modern 961 Norton Commando Motorcycles

Chain slack

Postby Britjunkie » Sat Apr 15, 2017 1:55 pm

I was reading about the cush grommets getting chewed up and wondered if a too tight chain could be responsible? The tiny Norton manual that came with my 2015 sport says 35-40 mm slack. That seems like an awful lot of slack. Any opinions on that? Mark.

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Re: Chain slack

Postby TonyA » Sat Apr 15, 2017 5:13 pm

No , That's about right 1.5 in.

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Re: Chain slack

Postby Raphi » Sun Apr 16, 2017 12:51 am

No, the eating of the rubber dampers has definitely nothing to do with the chain slack...
I hope with the new Carbon wheels and rubber dampers with metal rings inside the problem is solved.
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Re: Chain slack

Postby TonyA » Sun Apr 16, 2017 6:01 am

Hi Raphi , The carbon wheels must be very nice. I hope that is not the only way to resolve the damper issue with the aluminum rim hubs. It seems very reasonable to replace the dampers when new chain and sprockets are required. But every 3000 to 4000 miles is too much especially with normal use. A good chain and sprockets with regular maintenance should last 15,000 to 20,000 miles. Have you had any relief from the factory about this ?

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Re: Chain slack

Postby contours » Mon Apr 17, 2017 1:09 pm

So glad I chose that option. But I have to confess my main reason was to not have to fuss with tubes.
2015 Norton 961 Sport
2013 H-D XL883N
2006 Triumph Speed Triple 1050
2003 Triumph Daytona 955i (sold)
1975 Norton 850 Commando Mk3
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Re: Chain slack

Postby Britfan60 » Wed Apr 19, 2017 5:35 am

[ The tiny Norton manual that came with my 2015 sport says 35-40 mm slack. That seems like an awful lot of slack. Any opinions on that? Mark.[/quote]

40MM 1.5 inches. That's a wee bit much for my tastes. I go about 33mm
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