Where the heck are these metal shavings from?

Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Anyways, i was riding today and went to restart my ski, and it sounded really bad like something was knocking. Then it started right up but the bendix still was spinning a little bit. I got it back to shore and I thought I blew a rod because as I was turning it over with the stop button depressed, sometimes it would get caught and smack and sound bad. Also when I had these symptoms it would occasions shut off and then I could start it right back up. Pulled the flywheel cover, and I can't get it to spin back and forth. It'll spin out but I can't get it spun back out of the flywheel teeth. It'll only come out so far.
I looked at the magnets of the flywheel and there were all these marks that looked like metal shavings after using a drill. Is this just a grenaded bendix? I'm gonna pull the flywheel tomorrow.
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Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Stator I'm not too worried about... Just hope the flywheel and starter are okay. And a crank seal would suck.
 
Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
I did some searching and now I know what was attached to the flywheel magnets..
Found this pic. THIS IS NOT MINE, just a pic I Found on the x
I take it that's a spring that's in the bendix...?
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Pro-pulsion

Pro-pulsion

Location
Ontario, Canada
Inside the bendix are a few flyweights similar to a chainsaw clutch, and that would be the spring meant to keep them from constantly engaging. There is a very easy fix for that, my old Kawi bendix did that and I replaced the spring with an o-ring of similar diameter to the spring coil and not too snug. 5 years since and still holding.
 
Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
Why would my ski randomly shutoff like an electrical issue when this all happened? Metal interfering between the stator coils?
 
Pro-pulsion

Pro-pulsion

Location
Ontario, Canada
Most likely because the spring was extending the magnetic field from the magnets to throw off the pulse timing. It would act the same as having too small of an air gap between the pickup and magnets. Lawn mower engines are famous for this issue, as they (the flywheels and laminated cores of the coils since the coils are mounted to the outer edge of the flywheels) rust, the metal swells just slightly but enough to close the air gap, then the flywheel tags it and scrapes it away. But in time the filings become magnetized and build up enough to close the gap killing the timing of the magnetic field. A thorough cleaning of the magnets and flywheel and all is well again.
 
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