Hyjinx
Your statement above reminds me of a big sign we had in an engineering department for the big corporation I retired from:
"IN GOD WE TRUST....all others bring data."
It had to be taken down because it didn't match with company policies.
Lonnie
I checked the Taipan prop and it is marked 11X5. I will run the engine again with that prop to check the RPM numbers when I get a chance.
Pedro