Jerry Bass wrote:

My air speed to the rotary roundup was
145 kts.  at 6500 rpm, and 24 inches of MP.
Oil temp was 180 at the start, which was colder.
then 197 as I got closer to Florida. I figured I got 12 mpg on this run.

Comming home, on the third leg, I was at 7500ft at 6950rpm and 155 kts.
almost 25 inches. the barometer was 29.89. at altitude, the oil was
187f and the water about the same. Oil pressure was 45 psi.

exhaust temp always runs 1750 F.

The low altitude flight from Tracy's to Plantation airport took
about 17 gal of gas. I was pushing it.

What were the other things you asked.

Jerry Bass
540-932 3124

Top speed?
RPM at top speed?
Manifold pressure at top speed?

Cruise speed?
RPM at cruise speed?
Manifold pressure at cruise speed?
Fuel burn at cruise speed?
EGT at cruise speed?
Fuel mixture at cruise speed? (If you have a working O2 sensor.)
Prop pitch and diameter?


Paul Lamar

Phil Flaugher wrote:

Is 1750 F real? Carbon steel will melt at 2500 F! I am a novice, especially
to rotary power........lots to learn ......very harsh conditions for most
materials. Where is this measured?

Phil

Yes it is real. It is measured within a few inches of the block.
The RX8 engine exhaust is somewhat cooler.

Paul Lamar
 
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