Topic: Front sprocket question

[jmd10259]

On my 1977 Honda CB 750F, I've noticed the front sprocket being held by a single bolt with correct flat washer has some play on the output shaft. Enough I can wiggle it around a bit and rotate the sprocket on the the shaft backwards and forwards a small amount. The sprocket is brand new 15 tooth. The original 14 tooth was the same as far as play goes. Should I worry about this or is it considered normal? 18k miles on bike with 630 chain. Thanks for the knowledge and help.

[scottly]

I think 15 teeth was stock? The new sprocket should be flat on one side, and raised on the other side. What does yours look like?

[Tracksnblades1]

New Honda one are usually tighter than new aftermarket ones..
Some used Honda’s are still tighter than aftermarket’s…🤪

[scottly]

This is what the correct 15 tooth 630 sprocket looks like on the counter shaft; notice that the end of the shaft is about flush with the surface of the sprocket; if the end of the shaft sticks out past the sprocket, the sprocket is too thin. NOTE: the raised side of the sprocket is supposed to face inwards, not outwards like in the pic.

[jmd10259]

Oh damn the raised portion of my sprocket has been facing outwards since I've owned it. 3 years now and about 3k miles put on. But if the correct way is inwards I'll flip it around and try that. But should I have any play? I had a very thin washer made up that allows the sprocket to fit tight and it does, it's just that it's on backwards haha. Thanks for the heads up!

[jmd10259]

Actually Scottly, stock front sprocket is 14 teeth, rear is 43. Going to a 15 dropped my hwy rpm about 500. I've been to 80mph once on this bike lol. I'm an older guy and have no need for speed any more.

[scottly]

I stand corrected.

[newday777]

As to the play, that is normal to have a bit of play.
You asked that on fb?

[madmtnmotors]

A little bit of freeplay is normal. Raised shoulder facing in.