Don’t know about either of the two flywheels. But is normal to have high tickover to keep running because lightened flywheels have less momentum than heavier standard.[:roll:]
the Pinasco flywheel for the P-range engine will come in a very poor quality. You will loose the rivets in the first 500km and the flywheel will destroy than also your stator plate. The HP4 is made by Piaggio (it’s a geniue spare for a special PK50 modell) and the quality is very, very good and the weight is very similar!
Markus[:bounce:] [:bounce:] [:bounce:]