Morgans wrote:

It said that 90 HP was turning a 68" prop!

Youtube text description says 12gph fuel use!!!

A 3 bladed 68 inch prop, burning that much fuel even at turbine
inefficiency sounds like a buttload more than 90 HP, to me!


Yup.

I suspect that's 90 HP at the shaft - BEFORE the gearbox.

BTW, there is quite a bit of information about this setup on the web.
Velly intelesting...

--

Richard Lamb
email me:
web site: www.home.earthlink.net/~cavelamb