Electric starter from bicycle sprocket - video

[Jon]

Electric starter from bicycle sprocket. By Sek Austria. 10:36 video:

Previously:

Chainsaw cutoff saw - video
Homemade sand screening machine - video
Homemade scroll bender from motorcycle chain - video
Homemade winch from bicycle parts - video
Homemade winch-powered table lift - video
Homemade handheld spot welder - video
Homemade power hacksaw - video
Pedal-powered bench grinder - video

[old kodger]

No doubt that it works, but no mention as to how they get around the air cooling shield problems

[Lee Bell]

That won't work for very long. The tiny little pawls in the freewheel will wear the ends off in a very short period of time. I tried that a few years ago. I did modify the cover to fit back over the fan so the air worked as normal. It would be nice if it would work for a good while as it's an easy way to add a starter.

Mine only lasted about 5 hours worth of engine running time before it wouldn't catch at all anymore but it did work for a little while.

I've wondered if using one of those one-way bearings would work in it. Those are keyed too so it should be possible to substitute one of those for the freewheel.

[old kodger]

If we are talking about modifying the idea, why not cobble it up to the pull starter dog? That drops completely out of engagement once released