Tight chain.

[10 inch Terror]

Hi all, I've just fitted an 81 link chain and it is guitar string tight. It is so tight there's probably less than 1mm up and down movement and I struggled to get the rear sprocket on. I've checked it's the right number of links and the sprockets are correct (47/16) and they are all ok. Will it stretch a little once running or do I have a problem? I don't want to mess about taking the sidecasing off once fitted. Any comments or ideas very welcome.
Pete.

[bristolmod]

is it that tight top and bottom?

If it is I would consider 82 pitch to be on the safe side- an 81 should fit OK so it could be you have a problem with either/ both sprockets??

A chain that tight will will cause problems with the chain rollers eventually, and you may find some bits in your oil when you drain it!

Chris

[10 inch Terror]

Hi Chris, thanks for your reply. I'm thinking the same thing, an 82 link with a pull down tensioner. I've got a spare one kicking about in my shed. Do you think that would be ok?
Thanks again Pete.

[bristolmod]

I recon thats your best option- I ran a tight 80 link on a TV175 with a 16 front and when I changed the oil there were rollers that had started to break up.

As I said, according to the books an 81 link should be OK with your sprocket set up- but it only takes a small tolerance difference on either/ both sprocket diameters to cause it to be too tight.

An 82 with a push/ pull down adjusted correctly would seem to fit the bill rather than run an 81 which is putting strain everywhere.

Chris

[rosscla]

Have you checked with the chain supplier?

[10 inch Terror]

Have you checked with the chain supplier?

I would do but Mr Innocenti went out of business a few years back