Dear Mr. Lamar,

I have browsed through your website and I learned that you have good
experience with Mazda rotary conversion.

Our project, an experimental wing in ground effect craft, requires single 3
rotor Mazda Rotary driving propeller via a PSRU (mounted as tractor
propeller).  Maximum propeller diameter is 2 meters.

Maximum static thrust required is at least 5600 N (1260 lbs) with propeller
tip speed not more that 250 m/s.

Would it be possible if you can provide us with a complete propulsion system
(complete rebuilt Mazda 20B engine, PSRU and propeller).

Our mount frame design will adopt the available design you already have as
long as you can provide us with the interface data.

If you can help us on this, please inform us the estimate cost dan time.

Thank you.


Best Regards,


A. Rafiandi

Propulsion System

AGEC TECHNO

We don't supply complete engines or gear boxes. Complete 3 rotor engines are hard to find but can be built up from 3 rotor parts available from MazdaSpeed which is the racing arm of Mazda USA.

Two meters or 78 inch diameter propeller at 250 m/s or 820 feet per second would be  20.42 feet tip distance  per rev or about 2400 RPM if my arithmatic is correct. The 1260 pounds of static thrust sounds doable with a 3.12:1 Ford six pinion planetary gear box driven by a 375 HP p-port 3 rotary at 7488 engine RPM.

Of course somebody on here might be interested in building a gear box and P-port 3 rotor engine if the price is right.

Larry Childs?
Jeff Doddridge?
Dave Lemon?
Jim Mederer?

My wild ass guess would be about $30,000 to $50,000 US including CS prop.
$10,000 US for the prop alone.

What is your budget?

Paul Lamar