Hans Conser wrote:

My helicopter design quest has resulted in the realization that we are going to
need high continous power, higher than I realized, and much higher than what I
think an RV-4 uses.  How many HP do you estimate you are putting out at cruise
Tracy?

My question is, do you think that a 13B REW can (given the apropriate water pump,
radiator and intercooling) handle a sustained (continious) 225 HP output?

I think that I'm going to have to build one and a trailerable test stand so I can
put some sort of beater prop on it and take it out to the boonies and run it.

Luckily we have lots of boonies out here.


Hans

Drill a small hole next to the leading plug Hans and monitor the temperature about
1 to 2 mm away from the rotor housing surface. If that runs over 400 degrees F
you are pushing it. That is the absolute bottom line. You might get away with 500 F.

BTW I have been adding two cycle oil to the fuel
in Robin's new 1983 RX7 with no noticeable bad affects so far. That makes about ounce
per gallon from the injection pump and one ounce per gallon from the premix.
Two ounce per gallon should keep the apex seal cooler at high HP levels.
Jim Mederer has tried up to four ounces per gallon with no ill effects
so far.

Paul Lamar
 
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