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Michaels Web Site
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Date: 6-7-2014
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Number of Hours: 0.00
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Manual Reference:
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Brief Description: Reversing flywheel magnet
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3 hrs in the morning.
We used a chain hoist in the hangar to lift the engine with two straps.
We pulled the engine off the backing plate today (a fairly simple thing, actually; there are only 4 bolts holding the engine to the backing plate. They came out easily. ), flipped the magnet (we checked it before we did, and verified it WAS opposite the magnet that was working in Keith Macht's AV), reattached the engine, re-gapped the mags, hooked up everything I had disconnected, and fired it up. It ran great on both primary and secondary, with a max RPM drop of 50 between the primary and secondary.
So... yes, the AV will run with the magnet polarity reversed, but it will run like crap.
If you ever run an AV for the first time and have rough running on the primary, add the polarity check to your list of things to check. Of course, the best thing to make sure it's right while it's still on your work bench!
Thanks to Keith Macht for helping me TWO Saturdays in a row!
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Engine lifted slightly.
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Engine separated from backing plate.
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The infamous magnet.
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