Jump to content

Chain getting tighter over time?


Phill
 Share

Recommended Posts

Hello guys. I have a problem with my chain, it seems that it has a mind of it's own, it should get slacker not tighter over time!


Thing is that i've cleaned, lubed, and adjusted the chain slack at the tightest point as per manual.


After 150-200 miles i have found the chain being tight as a guitar string, the chain making a grinding noise at low speed(this is how i've figured out that there's something wrong). What can be the cause? All the nuts seem to be alright.


I have a torque wrench and the axle nut is tightened at the required spec, and the locknuts from the adjusters are tightened properly.


I know the long term damage of a over-tightened chain on the output shaft bearings and the gearbox so i would like to avoid that!

Link to comment
Share on other sites

If you did set the slack at the tightest point.....then is the wheel/axle moving back in the swing arm? Check by resetting chain tension......rotate wheel a few times randomly to see if you've still got sufficient slack, then tighten axle nut - then check again! If all still OK, put marks on axle, nut, carrier and swing arm. A dot of tippex (see, there are still uses for it!) will do the job, or China graph pencil, run bike and check to see if anything has moved. You are dead right about the risks of running a chain too tight - just don't.


Just thought, are you setting chain tension exactly as described in the manual (ie. on/off stand, someone sitting on it etc.)?


That can make a big difference.


Thanks for reminding me why I only like shaft-driven bikes! :thumb:

Link to comment
Share on other sites

[mention]megawatt[/mention]


About 7000 miles? I think it needs changing! :lol:. The adjusters are only half way through just now, i had to tighten the chain 3 times in 4000 miles.


[mention]Speedy23[/mention]


Yes, exactly as per manual!


In November i will send the bike for the MOT and i'll change the chain and sprockets then.

Link to comment
Share on other sites

Try pulling the chain straight back off the rear sprocket at the 3 O clock position. All signs are that it's knackered. Buy a new chain AND SPROCKETS. DID X, Ring gold is the best and will last the longest.

Link to comment
Share on other sites

Chain getting tighter!

Can only be a couple of things that can cause that:-


Seized link - Check by running the chain by hand (seized link(s) should be easy to spot).


Suspension failure - Has the bike height changed (lower)?


Incorrect adjustment - Check with weight on the bike - should still have a small amount of slack in the chain.


Fractured frame / frame weld - Allowing the frame to 'stretch' (highly unlikely).


Note: loose adjusters or loose axle nut will allow the wheel to move forwards, making the chain too slack and, when braking, make the chain too tight.


:cheers:

Link to comment
Share on other sites

You are re checking it AFTER tightening the axle nut I presume . The pinching together of the swing arm is often enough to move the wheel back a fraction and this will tighten the chain further.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Sign up now

    Registration is quick and easy 

×
×
  • Create New...

Important Information

Terms of Use Privacy Policy Guidelines We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Please Sign In or Sign Up