Ring gear teeth chewed up.

[neetones]

Teeth are all chewed up in the same way. Bike would start okay but it was a bit crunchy.

Any suggestions? Can I dress it with a file and even things out or do I really need to look into replacing this and the starter?

[Antietam Classic Cycle]

The starter is fine - the teeth are made that way. The ring gear is another story - that's pretty chewed up. I'd try to find a better one.

[n3303j]

I'd dress the ring gear and use the system.

But! Unless you routinely hit the starter starter button when you need the horn you need to find out why the starter is not fully engaging before beginning rotation.





When the start button is pressed the solenoid pulls a fork that brings the small bendix drive into engagement. At the end of the stroke the solenoid connects the high amperage line to spin the starter motor. Your starter motor is being turned on too early in the cycle.

First thing I'd do would be to thoroughly clean and lubricate all parts of the starter motor. Yours looks really gummed up.  Maybe the bendix drive isn't advancing fully before spin up. Or maybe it's disengaging too slowly. The small gear is on a helix that under starter power drives it into full engagement and at startup pushes it out of engagement (and freewheel as engine speed exceeds starter speed).

So first add personal labor. It's the less expensive alternative. If rhat doesn't work then add starter and ring gear.

[Moparnut72]

What bike is this? I have one depends on which bike.
kk

[Dukedesmo]

Seeing that you have it all apart, it would be crazy not to replace it.


You don't want to reassemble everything and then dismantle it again to change it when it fails, the hours it will take is not worth the cost of a new (or good used) gear.

[Antietam Classic Cycle]

What bike is this? I have one depends on which bike.
kk

Although the early ones are slightly heavier, pretty much any of them with the dual-plate clutch will work.

[lazlokovacs]

I dunno, I had a ring gear chewed up exactly like that due to a faulty starter that was spinning but not fully advancing, once I swapped in a proper starter motor it never gave me any more trouble. Never had to bother swapping out the ring gear.

maybe I got lucky

YMMV

[guzzisteve]

It says 69 Ambo if you look

[Moparnut72]

I didn't look down at the bottom. I was going to offer one for a nominal amount plus shipping but there is a whole clutch assembly plus flywheel on eBay for $30 + shipping which is $27 or so. I would post a link but on this goofy Chrome book a pain to do. Easy to find though.
kk

[Antietam Classic Cycle]

I didn't look down at the bottom. I was going to offer one for a nominal amount plus shipping but there is a whole clutch assembly plus flywheel on eBay for $30 + shipping which is $27 or so. I would post a link but on this goofy Chrome book a pain to do. Easy to find though.
kk

This one? https://www.ebay.com/itm/135647623698 Doesn't come with the ring gear it seems.

[Wayne Orwig]

I dunno, I had a ring gear chewed up exactly like that due to a faulty starter that was spinning but not fully advancing, once I swapped in a proper starter motor it never gave me any more trouble. Never had to bother swapping out the ring gear.

That is what it looks like. Like the starter did not fully engage, or stuck partly engaged, and chewed up the ring gear. And I would guess the starter gear is hardened a LOT more than the ring gear.

[Moparnut72]

That's the one. Seems like an awesome deal to me. I also have a complete clutch but that one is a bit cleaner. The one I have came out of a bike that had been sitting for a few years or probably a lot more.
kk

[Antietam Classic Cycle]

That's the one. Seems like an awesome deal to me. I also have a complete clutch but that one is a bit cleaner. The one I have came out of a bike that had been sitting for a few years or probably a lot more.
kk

It's an okay deal but doesn't have the part (ring gear/clutch cover) that neetones needs.

[Moparnut72]

I would think he has that part already. He just needs the ring gear the rest is extra spare parts.
kk

[Antietam Classic Cycle]

I would think he has that part already. He just needs the ring gear the rest is extra spare parts.
kk

The auction you referenced and I linked to does not include the ring gear, which is the part neetones needs. The topic of this thread is "Ring gear teeth chewed up" after all. Buying that $30 flywheel and clutch parts would therefore be a waste of money (unless he needs those parts too).