This an aluminum flywheel I made to reduce the weight of the craft. The old flywheel weighed about 23lbs. The aluminum one weighs in at 9lbs. The ring gear was taken off the old one since it was only interference fit. Once a measurement was taken, I could machine the aluminum one to the same specs, put it in a freezer for a couple hours then tap the old ring gear on and presto!

The EA-71 weighs in at 135lbs bare. The starter 7lbs, the alternator 11lbs, the carb I believe was 2lbs.
Taking into account the 23lbs flywheel, the engine would weigh in at 178lbs and that's what they are advertised as.
With the aluminum flywheel it should be in at 164lbs.

This is the next step in weight reduction. I have machined a lower pulley to fit very snug into the flywheel and to be bolted by the shoulder. I will be using 5VX belts.

This setup will eliminate the need for another shaft, another pair of bearing blocks and framework to hold it all. I got this idea from the aviation industry. It just seems so logical.