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RC Engineering's calcs show that you are good to 302 HP at 43 psi fuel
pressure, .50 BSFC, and 100% duty cycle. Of course you can't run the
injectors at 100% (except maybe briefly like a drag race, not applicable to
aircraft). So at 80% duty cycle the 38 lb injectors should be good for 242
HP. Enjoy your idle!!! Your injectors are big enough unless you
P-Port and turn at least 8000 RPM.
Hi
Ken,
RC
Engineering's calc shows the same as the fuel calculator that I
posted the other day. Four 38 lb/hr injectors, at 80% duty cycle, .55
BSFC, should be good for about 220 HP at the flywheel. I imagine
that will be enough for the current engine, but not by a wide
margin. I plan to run this engine as high as 8000 if I can, though I'll be
amazed if I can get beyond 7500. Don't need no stinkin' P-Port for these
rpms :-)
On the fuel
spreadsheet that I posted (stolen) the other day, it gives a HP figure for
the flywheel, and rear wheels. The estimate for the power loss due to
a manual trans and diff is 15% on this spreadsheet. Anyone know
what this amounts to for our redrive, and
prop?
Cheers,
Rusty (hoping
Ed out types me)
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