Is my Chain dangerous?
 

My chain has a 'tight' spot, though the rest of the chain is ok and at the correct tenssion. It does tend to rattle a bit, I have a loober but I don't have the cash till next week to get it replaced.
Am I liable to loose my chain? Or is it something I just 'watch'.

Just run the chain a little slack than normal and you should be ok.

It is, but now I was worried about it jumpin off..

I should be ok mate. It won't jump off.

why's big ape so jammy?

Re: Is my Chain dangerous?
 

You should always adjust the chain so the correct 'whip' is at the tightest point, and never anywhere else. Also, I've never seen a chain that's done more than a few miles that didn't have a tight spot.

Unless the difference between tightest/loosest is very great (more than 2 cm or so) I'd leave it. The other measure of knackered is how far you can pull the chain off the sprocket at 3 O'clock at the back. If you can pull it more than a few mm or so, it will be doing that when it's under load! If it's too great then you will have major probs. I've had my pushbike chain jumping teeth at the back when very worn and I stand up and pedal hard going up hills.

'cos he got pulled at over 100mph and let off with a chatting to.

Agree totally with ChazzyB.


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Re: Is my Chain dangerous?
 

My maths could be wrong but I reckon you would need the thick end of 8 to 10cms of free play before you jumped a tooth. You certainly get that on a pushbike a) because you have a derailleur gear with loads of free chain play to take up sprocket sizes and b) because large sprocket drives small.

You certainly can get it on a motorcross bike because you have huge rear wheel suspension movement and often a gear box sprocket well for'ard of the swing arm pivot. Big arc then.....

Don't know of it happening very often on road motorcycles except when aviating over Ballaugh Bridge!! But my apologies if you know better.

jammy bugger!