Mailing List flyrotary@lancaironline.net Message #29666
From: rijakits <rijakits@cwpanama.net>
Subject: Re: [FlyRotary] Re: Injector pulseing ? Tracy ?
Date: Mon, 23 Jan 2006 09:46:55 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
Question.
 
Why does he ( Mark B.) need the injector pulses?
Unless he wants to have an automatic-best-performance feature, a simple rpm reading from the crank will do fine.
a) Electronics will increase pitch when power is increased to maintain rpm in C/S mode.
b) Pilot will change pitch in a variable pitch mode.
 
AFAIU the problem is to find the exact endpoints of pitch travel. How does knowing the injector pulse width help with that?
It will tell him how much power is produced in combination with an rpm input, but does he also measure airspeed?
 
Not bitching, just trying to get the idea!!
 
Thomas J.
 
 
Sent: Monday, January 23, 2006 8:55 AM
Subject: [FlyRotary] Re: Injector pulseing ? Tracy ?

And how would Mark
Burton's constant speed controller react if the EC2 was switched to injector
disable mode.  Depending on how it was wired, it might suddenly sense zero
power or 2X power.  Just thinking out loud.

Good point Dean.  If he only senses pulses to one injector, then it would have to be the primary, which is always active, unless you turn it off via the disable switch.  He may not realize we have the ability to do that, so it would be worth telling him about it. 
 
Cheers,
Rusty
 
 


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