I am building a Pietenpol.  The aircraft could handle up to 100 hp.
The engine however must be able to swing a 72 inch prop.
Would your rotary do that ?  Could it be used in a pietenpol.
Could it be done economically?
Thank you

David Jones

Can a Pietenpol handle 300 pounds firewall forward.
If so the answer is yes using a 2.85:1 PSRU and a stock 2 rotor.

If no... one can build a one rotor that will put out
about 100 to 120 HP with about 50 pounds less FW weight
still using a 2.85:1 PSRU.

If one were to build a one rotor P-port with after market
aluminum end housings one could get the weight below
200 pounds FW still using a 2.85:1 PSRU.

BTW what does a Ford Model A engine weigh firewall forward?

Paul Lamar