Spragg clutch looks ok. How can I tell if faulty?

teflon · Mar 21, 2013

Had a few starting problems lately. After turning engine over repeatedly it eventually started and ran ok but not before making a lot of nasty sounding noises. Spragg clutch slipping I assume? Removed my spragg clutch tonight with a lot of help from a good mate (thanks Steve). :thumbup Now it is off we can`t see a lot wrong with it. Nothing broken. springs look ok. Turning it by hand it seems to work properly. I know that is not a great indicator because the starter will obviously put it under a lot more stress. To be honest I don`t know what I am looking for.:dunno can anyone point me in the right direction please? I can put some pics up tomorrow if that will help.

stevezx7r · Mar 22, 2013

I've seen one that looked good but still slipped. It was replaced and no more slippage. As you've removed it I'd swap it for a new one as a matter of course.

Kiwi_rsvr · Mar 22, 2013

You are look for signs of wear in the sprag housing, that is the gear that the sprag sit in, does it have 2 parallel score marks running around the inside of it ?
How loose are the cam lobes in the sprag gear ?, they should be nice and tight.

stress · Mar 24, 2013

most of the times it's only the spring!

teflon · Mar 26, 2013

stress said:
most of the times it's only the spring!

I think that is probably the case as tightening the spring seemed to make it work properly. However I bought a bmw one and have fitted that. Now I just need a gasket.

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Spragg clutch looks ok. How can I tell if faulty?

teflon

stevezx7r

Kiwi_rsvr

stress

teflon

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