Paul,

After a couple of initial runs on my Renesis, I set the power at about 2,000
rpm and got up on the wing to inspect the connections for leaks and general
condition while running. I noted that the flywheel seemed a little fuzzy. By
that I mean it didn't have a very crisp edge while it was revolving. I shut
the engine down and put a straight edge up against the side of the starter
ring and turned the prop. I noted a 1/8" difference between one side and the
other, thus the "fuzziness". I figured the flywheel was bent somewhere so I
ordered a new one, since I was very concerned about the harmonics that might
be caused by the wobble at 7,000 rpm. As I studied the new and the old
flywheel I noted that there didn't seem to be much precision in the
attachment of the starter ring and the flywheel. As I measured several areas
there were easily 1/16" differences.....not the close tolerance I expected
on something that would spin at 7.000 rpm. The starter ring is welded to the
flywheel with about five one inch welds....again not very precise. There was
no evidence of balancing like shaving off or drilling metal on the flywheel.

My conclusion is that, apparently it's not that important because both
flywheels are similarly measured. Do you have any experience with this?

Sandy McNabb
Renesis in a Glass Goose.

I think you are talking about the so called flex plate.

First put a dial indicator on the flex plate mounting surface and check
for run out. If that is OK bolt it on and  C clamp a steel channel to the flex
plate and straighten it until it tracks true.

Paul Lamar