The Walden Effect: Farming, simple living, permaculture, and invention.

Rotisserie motor deer deterrent update

rotisserie motor set back

It turns out that the new rotisserie motor deer deterrent isn't as hearty as I originally thought.

I think it may have been too much pressure on the motor shaft because the metal that started out lightly rubbing on each other ended up wearing down till the movement was hindered.

The motor is still working, it just wobbles to the point of being non functional. I still like this configuration better than the previous incarnation, and with a bit of tinkering I think I should be able to figure out some way to reduce the friction and prevent any future grinding of metal parts.

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About us: Anna Hess and Mark Hamilton spent over a decade living self-sufficiently in the mountains of Virginia before moving north to start over from scratch in the foothills of Ohio. They've experimented with permaculture, no-till gardening, trailersteading, home-based microbusinesses and much more, writing about their adventures in both blogs and books.

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The way you constructed this device puts a bending moment on the motor axle that it wasn't designed for. Luckily there is a simple solution for this problem.

Next time, take a length of steel strip and drill three holes in it; one on both ends and one in the middle. Use the middle hole to fix it to the axle of the motor. Put a chain with a equal weight on it at each end. That way the forces balance out. And you get twice as much noise to boot. :-)

Note that this is still not the way a rotisserie motor is meant to be loaded; the weights could pull out the bearing. If that happens you'll need to decouple the rotor from the engine, using a separate bearing for the rotor. But that would complicate it somewhat.

Comment by Roland_Smith Mon Feb 21 15:07:42 2011
Good ideas! I'm sure Mark will put this to good use in his next incarnation!
Comment by anna Mon Feb 21 21:03:30 2011

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