For cruise do you lean enough that
you notice any reduction in engine RPM? What sort of fuel flows, manifold
pressure, and cruise speeds are you getting and at what altitude?
For it to run well very lean the
mixtures to the rotors need to be balanced – similar EGTs; so you may
want to do whatever mode that is. You can get a handle on good lean
cruise and max power by watching the EGT. I tend to run about 100 lean of
peak for cruise. Although it will do fine leaner, it doesn’t fell
quite as smooth. You’ll have to add some throttle to maintain rpm. Max
power is somewhere about 150+ rich of peak IIRC from the dyno runs.
I typically cruise 5400-5500 rpm, 9.5 –
10.5 Kft, maybe 9.7 gph on my 3-rotor; so you should get the 2-rotor in the
area of 6.5. That gives me 165+ KTAS in my 4-place Velocity –
not bad. Could get better economy going slower, but unless I’m just
sight-seeing, I wanna get there.
Does your test area extend to French Valley?
Al