Here's a Robin, about 25cc...Haven't run it yet...2 lbs, 4 oz..Easy conversion, cut off the extra casting, a G23 hub fits the crank..The rear case has three holes to mount to the firewall..This hub is a custom for my ignition..The sensor is in the ring behind the hub, on the front of the case..
Harold, if you're out there, this is yours...[8D]