Al,
What rpm do you normally see in cruise? I'm curious as Tracy pointed out that the most economical rpm for the rotary engine is 5200. When I dial my prop speed down to 1700 and lean the mixture, I see about 5100-5200 rpm and
11.2 - 11.5 gph, but this is only at about 3000 msl. I would expect lower fuel burn at higher altitudes, but that will have to wait for later. Also, I haven't calibrated my fuel burn either (not sure how to do that).
Mark
On 11/12/07, Al Gietzen <ALVentures@cox.net> wrote:
Do you have a c/s or an in-flight adjustable prop? If so, what settings were you using at the time?
Mark S.
Fixed pitch Catto 3-blade: 66 x 80.
Al
On 11/11/07, Al Gietzen <
ALVentures@cox.net> wrote:
I've finally got the EM2 fuel burn pretty well calibrated, and took note of some readings today.
At 7500 ft I was cruisin' at 200 mph (TAS) at 20.7 mpg, 9.6 gph (average of two readings). MAP at about 17.2
. One reading at 8500, same speed, of 21.2 mpg. This 20B is better on fuel than I expected; I like it!
Al
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