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Tested my single rotor today. The first time with
some real, reproduceable data.
The configuration is with one compound side
housing. The other side housing is still sandwiched, using milled down MAZDA
housing section.
This version weight for the nacked engine, flywheel
and water pump included, is 90lb. This engine is based on 12A rotor and rotor
housing. Intake is P-P.
Data:
RPM 4000
Fuel flow 2.5GPH
MAP
21"
EGT
1400F
O2 .650 = 15
(ratio)
At shut down:
oil temp
200F
Water temp 200F
oil pressure was 50psi cold and hot, looks
suspect.
The water pressure gauge did not work, which was
the reason for shutting down after 7min runtime. I had planed to go to max water
temperature, did not want to do that without water pressure.
The most interesting fact of this test is the
possibility of a power estimate. Calculated power using a BSFC of .5 is 30 hp.
Looking at the power curve of the LeMans engine, this is about 10% below of what
is shown there. From this, I believe the projected over 100hp at 7500RPM is
within reach.
Richard Sohn
N2071U
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