The generator was something that I had thought of before, but even if I charge the battery from a charger, I get the same result.
I do however have a fresh video to share. Here is another test with the spark plugs removed. Is it supposed to 'chatter' like that? Or would this indicate a bad engagement?
https://photos.app.goo.gl/RsBBtbE9OuZMvxzt2
