I was thinking recently of copying the Ross design as there are now about a 1000 out there in every day service if you include Tracy's version.
That is lots of hours and experience. The R&D has been ongoing for almost 50 years. Why reinvent the wheel. If it is not broke don't fix it.

Not rocket science. The incentive is I recently found a low cost machine shop in Ventura with big enough machines to make any of it at relatively low cost.  I also found a heat treater near by. Two critical suppliers.
The case will be tig welded thick wall aluminum tubing machined after welding.

Ross cleverly used hardened and ground  2 inch OD DOM tube with needle bearings for the prop shaft. This saved a bunch of weight.

The Ross was 10 pounds lighter than Tracy's Chevy rear axle version. It also does away with the spline on the prop shaft which is a source of some of the back lash on Tracy's version.

Jeff is already making adapter plates with built in motor mounts.

I would start with a 3.17:1 as that gives the most power with a 72 or 76 inch efficient prop.

I would use our new silicone rubber steel welded coupling.

Paul Lamar

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Paul,
I might be in the market for something like that....enough to take 350 hp......but I want hydraulic CS too...
Marc Weise

That is nice but to manufacture and sell anything there must be a fairly large market. Most rotary powered experimental are high power to weight ratio and they don't need constant speed props.
Set the prop for cruise and take off will be adequate.

Also most rotary builders are cost conscious.

Paul Lamar

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