Mailing List flyrotary@lancaironline.net Message #38070
From: Ben Baltrusaitis <ben@pa.metrocast.net>
Subject: Re: [FlyRotary] Favored Method 7/8 - Fuel Pump Shut off was [FlyRotary] Re: Method of killing power??
Date: Sun, 24 Jun 2007 12:38:19 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Won't shutting down with the fuel pump tend to boil the remaining fuel in the lines because it is at a lower pressure and subjected to high heat sink?  Couldn't that lead to gummed up injectors from the residue left?
Ben
----- Original Message -----
Sent: 06/24/2007 12:27 PM
Subject: [FlyRotary] Favored Method 7/8 - Fuel Pump Shut off was [FlyRotary] Re: Method of killing power??

 

 
Ok, heard from a couple more, the count now is  out of 8 respondents (including yours truly), it looks like the methods of engine shut down
 are:
 
7 - turn off fuel pumps
1- Disable injectors
 
And the "Winnnaahhh" is Fuel-Pump shut off!
 
Well, being "Plugs Up" has already endured me to being a part of a minority, so I can accept it the rest of you choose to be different {:>). 
 
Since flooding in my configuration ("Plugs Up")  is something of little consequence (but, leaking injectors have bugged me in the past) - I will stick with what has worked for me. 
 
Thanks for participating in our little informal survey
 
Ed
 
en·dure (n-dr, -dyr)
v. en·dured, en·dur·ing, en·dures
v.tr.
1. To carry on through, despite hardships; undergo: endure an Arctic winter.
2. To bear with tolerance: "We seek the truth, and will endure the consequences" Charles Seymour. See  v.intr.
1. To continue in existence; last: buildings that have endured for centuries.
2. To suffer patiently without yielding.
 ----- Original Message -----
Sent: Sunday, June 24, 2007 10:35 AM
Subject: [FlyRotary] Re: Method of killing power??

Ed,
I prefer the Fuel Pump shutoff method.
On my airplane the fuel system will remain pressurized for a long time after shut down.
I don't like the idea of highly pressurized fuel inside a very hot engine compartment.
So by turning off the fuel pumps with the engine still running it serves to de-pressurize the fuel system.
This way if you do happen to get a stuck open injector it will not flood the rotor housing with fuel.
It only takes a second or two for the engine to quit after fuel pump shutoff.
Jim

Ed Anderson <eanderson@carolina.rr.com> wrote:
To everyone running a rotary engine and particularly flying with one - what is your normal method of killing the engine.
 
1.  Turning off Main Power
2.  Turning off EC2 Power
3.  Turning off ignition
4.  Turning off Fuel Pumps
5.  Turning off injectors
6.  Other


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