Duane,

About the heat problem with the starter. That may be an issue if I leave the starter where it currently is mounted. I did however mention that I intended to make up a shield to divert more air to the front cylinder,(and the starter) if heat was a problem. I did not know if it would be or not, since I have not even had the 084 running yet!

However, the idea to use a larger diameter ring gear and mount it lower than the cylinders, would certainly prevent any heating problem. It will get unheated air before it even touches the cylinders. Automotive starters have been mounted in confined areas, between hot engine blocks and exhaust systems, and usually last many years. I don't think the starter will "DIE A HORRIBLE DEATH".

If an airboat starter does fail due to heat, chances are no one will have to parachute back to earth!

Dave