Maybe a magnet let go on the flywheel. That would explain the bang with no visible damage. I've got a 25 that has a severe gouge behind the flywheel. IDK
I'm just throwing out an idea
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Terry
O,100,72,102,123,104,124,105
125,129,149,1200,982
(2)2182s w/60in Habans
3225
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