Clubsport Sprocket Alignment

[tprocket]

Ive just checked my sprocket alignment prior to fitting a new chain and it
appears that the that they are out of alignment by around 3-4mm.
(ie: the front sprocket needs to be closer to the engine by 3-4mm)

When I take the front sprocket off there is a 6mm spacer behind.

Can i get a thinner spacer or can I adjust the alignment on the rear sprocket?

Thanks Tim

[RobC]

The rear diff is shimmed so you can move it side to side.

[martvr]

A bit slow on the reply there Rob, that took 3 mins. Bit quicker next time please

[tprocket]

Thanks Rob -

You should set up a Radical Technical Support line - you'd make a fortune!

Just looked at the diff - I have two shims on each side. I would need to move
all four to the right hand side to align the sprockets - does that sound okay?

Tim

[RobC]

Yeah, that is the way to move it, however I would double check everything just incase there is another reason for it to be out of alignment. If it is out that much I would expect you to be chewing through chains and sprockets. Not sure how you are checking it, I used to put the back of a large hack-saw blade against the face of the engine sprocket, then align the diff to match the engine.

Martin -

[splitpin]

Tim

Make sure you get this right!

Chain 'G forces' can approach 500 (yes, 500!) and the consequences of those sort of loads being misdirected can be dire, particularly on the pocket, such as wrecked diffs, output shafts, gearboxes etc.

Accurate sprocket alignment (and to a lesser extent, chain tension - if anything a slightly 'loose' one is better than an 'overtight' one) is extremely important.

If you're not 100% certain you can or have got it right, then I'd suggest you get it done or checked over by a professional.

PS Recommend you 'lock' (including lock tabs) both sprockets; a lot seem to run without them on the rear sprocket and given 500G and what the diff carriers (they aren't exactly cheap) can look like after a bolt has loosened, not a good idea.

[BertBert]

Are there any alignment tools that can help? I used to do my own before passing the car to Lanan to look after and I was never very happy with it.

Bert

[RobC]

Hack saw blade, honest It is a very simple thing but it does the job brilliantly imho

[nick997]

You can use something like this if you feel the need:

http://www.zoomkarts.com/product.asp?productID=690

Never bothered myself as Rob's preferred tool of choice does the job beautifully.

Keeping busy I see Tim

[BertBert]

hacksaw blade it is then!
tks
BErt