Primary knock

[fdrdr1]

Knock from primary when I let off the throttle. Throttle up or pull the clutch and no knock. The chain is adjusted to HD spec (5/8-7/8), but is at the high end of 7/8in. Clutch basket/compensator bolts are torqued to spec. I will adjust the chain closer to 5/8 and see what happens - not sure what a too loose chain would sound like. Any other ideas. Thx
DG

[Trip]

Tighten the chain...how many miles on the compensator and what is it torqued to>?

[Traveler733]

It could be loose spines on your rotor, or loose magnets in the rotor. Charging ok?

[dave_9113]

Compensator torque is 150-165 ft. lbs. Clutch hub nut is 70-80 ft. lbs.  (left hand).  Compensator nut loose would be a consistent knocking.  Sure not the a loose belt hitting the belt cover.  Sound travels.

dave

[fdrdr1]

Compensator has 50k on it and is torqued to 160. Only a consistent knock when off the throttle (when throttling up or when I pull the clutch in I have no issues). I will tighten the chain and take a look for any rotor wobble (charging fine though), as well as re-check the clutch basket bolt. I am pretty sure it is not a loose belt - but I will check again and maybe even lose the belt cover to see if that makes any difference. The knock is coming from the front left inside of the primary and I am not sure what a loose chain would sound like. Thanks for the input and I will keep you posted.

[pappyfreebird]

that sure sounds like a loose comp nut..was  she jambed up good when tightund

[96dynabagger]

I'd tighten the chain, that's pretty loose at the far end of the spec.
Recheck for knock.  I'm betting it'll be gone.   

[bigblock6912]

loose chain will slap in top of primary at idle or when backing off throttle. usually makes shifting a little more difficult if sloppy also.

[fdrdr1]

Did not tighten up the primary chain yet as I found the shoe pretty loose. I am waiting for delivery of a clutch release plate as I found that to be stripped. Once everything is buttoned up I hope the loose chain shoe was causing the knock. Everything else was torqued to spec.
DG

[fdrdr1]

This has been a long process for me and I am not getting anywhere. I have tightened the chain, checked the torque on the sprocket and clutch basket. So, I put it on the jack, pull the primary and when I rotate the rear wheel, I hear a knock from what sounds like maybe the trans, pulley or belt (only when rotating the rear tire forward). Checked the belt tension and it is within spec. So now I thinking about pulling the inner primary and digging deeper. Anyone have ideas or have experienced this problem. This all started with a knock from the primary after letting off the throttle, now I am thinking I may have two different issues. Thanks

[bigblock6912]

possibly the tranny sprocket