Shattered skirt which lead to seizure due to aluminium swarf jamming the rings and causing a loss of compression?

I had the same happen to my front cylinder but it only jammed one ring - the other kept sealing properly and the motor got me to the top of the hillclimb i was competing in (i had no idea why it suddenly lost power at the time - i just assumed the fast increasing altitude had caused it to run massively rich so i kept going lol).

All the bits of broken metal passed out the exhaust without causing other damage - have your bore and combustion chamber been damaged at all?
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