Here is what the new PowerSport used.
   Paul Lamar

 Wasn't Powersport using this in place of the counterweight as well?

 Chris Cosman

 Yes.

 Paul Lamar

Hi Paul,

What does Powersport use the ring of holes just inside the ring gear for.
Could be used for the CAS and timing of injection and spark. You may
need a
couple of other holes for the firing position.

Dale Davies

Probably to save weight :) Maybe I don't really know. Makes sense for
an optical timing sensor. Perhaps a VR sensor will work there. Not sure.

Paul Lamar


 Hi  Paul,
      That flywheel appears to have 62 holes around under
the ring-gear it probably could be used as a 62-2 timing setup for
either a VR or Hall sensor, you would need to have two holes blanked
off, /welded shut for the timing point reference, missing teeth, of
course if they were welded shut it would have to be re-balanced, I
counted 31 holes from the start of the pie cutouts to the end, about 1/2
way, would have to be strange to have that many holes for no purpose.


 I just noticed that the flywheel has two holes machined out probably the "missing teeth", it is usual to have 31-1 teeth American, or 62-2 teeth European/japan.
 John Burey