i counted the cadence of that engine clip and then clicked on the som clip
and the som is clipping along at about twice the speed,
maybe the video is not timed right,, maybe it is just the video that is sped up
like a 33rpm record on 45rpm?
the som definetly sounds like a 33 on 78rpm
i would think if it were overspeeding one could see a bit of fire out the exhaust port?
i dunno, i am getting to like listeroids less and less
"LONG LIVE THE MIGHTY CHANGFA"
mwahahahaha
bob g