too bad.. the PA50 ate a piston ring today .. (at least thats what I think happened .. haven't done surgery yet)
I pushed/coasted it home after it made a few loud mechanical sounding 'hiccups' at 40mph .. and I shut it down
I had kind of overlooked the fact that the top end on the PA had previously sustained a major seizure ... the top end came from the parts motor I bought that at first looked beeyootifull .. till I disassembled it... and found it had had a major seizure.
.. and I had to file the piston to get it to 'release' the rings from the aluminum that was smeared over them.
I re-used all those old parts after a careful 'clean-up'.
I had been treating the motor like it was all in tip-top shape.
I had changed the variator yesterday .. and it was revving a lot higher now at top speed.
Shouldn't really do that on parts that have been damaged before.
I bet the bottom ring broke right where I had to file it a bit.
Shouldn't be too bad to fix .. depends on how bad the bore got 'bit'.
The bright side ?... I've never had a moped motor that hadn't been seized a few times before I got it.
So this will be my first new piston and bore in a moped ever.
(actually .. I'll swap back to the 'old cyl/piston first.)
Maybe the 50mph PA will be a little faster with a new top end ?