----- Original Message -----

From: David Leonard

To: Rotary motors in aircraft

Sent: Sunday, February 29, 2004 12:39 PM

Subject: [FlyRotary] Re: Injectors on? Was 13B - No start problem

Tracy, by improperly wired do you mean that you intended for the injectors to be hot only when the EC2 has power?  This would create quite a re-wire at this stage.  Although in retrospect I would have done it the way you intended.  My coils are wired the same way – drawing power directly from the main buss.  The biggest problem that I see however is that the EC2 is now on whenever there is power to the main buss and turning off of the engine will occur through fuel starvation.

 

Thanks.

 

David Leonard

The Rotary Roster:

http://members.aol.com/_ht_a/rotaryroster/index.html

 

You are correct, David.  With power to injectors via a separate connection to the battery bus (which I also have)  the way I  stop the engine is by turning off the fuel injector enable switches which kills power to the injectors but not the EC2.  That is how I found out about the "sneak" circuit.  I turned off the switch that is dedicated to providing power to the EC2 module which should have kill the engine but the engine continued to run!!.   The other option is to kill all power to the system through a master switch.  In my case, my EC2 and injectors are wired to the battery bus through switches.  So turning off the master switch will not stop my engine.  I either turn off power to injectors via the injector disable switches or pull the circuit breaker between the battery and battery bus.

 

It would seem that at your stage, the simplest thing might be to put a switch in the circuit with your injector fuse (I think you said you had one) to kill power to the injectors.  That way you can ensure no power is getting to them.  Actually, its not a bad set up, you can play with your EC2 and ignition while assured the injectors will not inject fuel and start the engine.

 

Ed