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Mark,
I notice your Hp requirements for the 20B, which is
125hp per rotor. This exactly what I'm aiming for in a single rotor application,
but would be happy enough with 115hp, if that's all I got.
Given that the motor can only gulp so much fuel and
air and HP is dependent on RPM, which is restricted in our case. Are you
considering any forced induction other than tuned inlet .
I've opted to use the RX8 high compression rotor to
give me some addition HP and am using 44mm inlets to give higher inlet
velocity, however my maths indicate even with this arrangement, 125hp
might be out of the question. Certainly higher RPM would solve the problem, but
that's not available with reduction ratio I'm considering and many are using,
might get to 7,500 but that's it.
George ( down under)
George,
Yes, my Fluidyne cooler should easily do the job of cooling my current
engine. But I am building a P-port 20B to replace this motor
downstream, so I need to design for 375hp (375 x .8 = 300). The
Fluidyne cooler is 297 cu in (core size is 9 x 11 x 3). Close enough
for government work.
Mark
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