Hello paul, our yak 12's are on the way and should land in the first week of July. The
idea as explained before is to put in a rotary 13b as 20b's are just not available. Will
it be possible to produce 300hp on the flywheel with around 0.4 boost?
Next the psru :
Is it possible to get a psru that will be reliable at 300hp ?
And still be able to keep the v530 paddle prop?
V1 the Al14R radial is at 2800 rpm
And the prop is at 1600rpm.
V cr is 2100rpm and the prop is at 1260 rpm.

Regards Bradly Banks.
South Africa.

There is no gear box for that prop that I know about.
What is the diameter?

Paul Lamar

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