SOHC.co.uk Forums > CB750

Intermittent noise when riding, could it be my chain?

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Bryanj:
New chai definately, sprockets maybe depending on tooth wear

Craizeehair:
Thanks Bryan, I’ll see what happens when I get it put back and ridden again. If I do the chain, I will probably do the sprockets for peace of mind.

The difference in the slack before I readjusted the chain and after, is there any logical explanation for that? There is definitely less variance and more uniform now for sure??? Could poor alignment do that?

Bryanj:
Possibly but more likely tight pivot pins in the links, chains do not like standing still doing nothing, try motorcycle products.co.uk but look through all the pages for your model as similar things at different prices on different pages

K2-K6:

--- Quote from: Craizeehair on July 18, 2024, 09:18:01 PM ---Thanks Bryan, I’ll see what happens when I get it put back and ridden again. If I do the chain, I will probably do the sprockets for peace of mind.

The difference in the slack before I readjusted the chain and after, is there any logical explanation for that? There is definitely less variance and more uniform now for sure??? Could poor alignment do that?

--- End quote ---
[/b]

Certainly odd that you've got a variable as the error would usually stay the same.

As a check though, put your fingers in behind the frame at left swingarm pivot, now squeeze one of the chain runs (top or bottom) to the arm itself. You'll be checking for movement in swingarm bushes when the chain loads and unloads tension.
Any shift there with arm bushes, and it'll give you problems.

For variation in chain like this (never taken one apart to look at links) comes down to some level of corrosion / wear along the run.

Suggestion to use GL5 oil initially will give results usually in this scenario. It will penetrate the links to the pins etc and highly effective in taking chain load. It's a low cost way to verify those links etc.

Failing that, definitely into chain replacement to deal with it.

Craizeehair:
Thank you, I will take a look, all new bushes so hopefully ok there. I’m thinking chain and sprockets to put my mind at rest.

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