Ed, You are good at this kind of = thing..

The Renesis primary (red) injectors = are 295 cc/min flow rate. At say, 80% duty cycle, what HP would these injectors support if you moved the staging point to higher = RPMs?

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of sboese
Sent: Wednesday, February = 18, 2009 12:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = staging

Tracy and = all,

Looking back at the data I was = using when thinking about my “staging bog”, I realize that the manifold pressures I am looking at are values I calculate from the EC2 = data. My conversion to units of inches Hg may not be correct. Either my EC2 manifold pressure sensor may have changed calibration or I may have = never had this conversion correct to begin with. I have only one program to = do this and may not have it right. How Tracy keeps track of all the versions of EC’s is beyond me. =

In any case, I can NOT say with = certainty that my EC2 is internally inconsistent as I stated in my previous message. I apologize if this has caused you to waste any of your = valuable time and energy over this.

The reason I am concerned with = staging more than many others might be is that at the ground level density = altitudes of my home airport, the maximum manifold pressure I see is about 23 inches = and of course it gradually drops off from there as I climb. This results = in staging taking place during critical flight regimes. Encountering = an extended “bog” right after take off is not my idea of = fun. If I cannot get the staging to work well using mode 6, I am considering = David Leonard’s suggestion of moving the staging point to a higher = manifold pressure where I will not normally encounter it. In my case this = is need not be much of a change. The manual indicates that some modes are = active only when the engine is running. Is this the case with mode = 7? I’m trying to make sure I can set the staging point with a = pressure source other than the engine.

This does generate the potential = for my next trip to lower altitudes to be memorable. I just have to = remember that this is venturing into unknown territory again and that full = throttle operation may not be reliable until tuning at the higher power settings accessible at lower altitudes has been = accomplished.

Again, my apologies to especially = to Tracy and also = the rest of you.

Steve = Boese