Bill and Lynn,

 

Thanks for the pointer to the article.  Indeed, it's interesting, and gets your attention. 

 

I had wondered if a flywheel of sorts would be needed, but with the high weight of the engine now, I'd hate to add more weight.  It would make an interesting test, if I could do it easily though.  Perhaps some evenly matched weights could be added at the 4 bolts that hold the flex plate to the drive plate.  I'm not sure if you could put enough weight there to really matter though.  

 

 

Just flywheel effect, is needed. A bit of weight at the very edge of the disc.

 A few small weights tucked right inside the flange where the ring gear sits might be all you need. I added 8 short TIG beads between the ring gear and that flange, because a missed shift without a rev limiter shucks off the ring gear, and just about cuts the bell housing into two pieces. Not likely with a prop installed, but you can bolt on stacks of washers to run for a few seconds to see if that is a cure, if you would rather not weld on the flex plate.

 

Lynn E. Hanover