George,

That may have been me following Paul Conner’s first engine-out landing. I picked up the idea from the Eggenfellner Subaru group. They had had a couple of instances where pilots ran one tank dry and then couldn’t get the EFI pump to re-prime, and ended up in off-field landings. It is now a mandatory change for anyone running the Eggenfellner package. I used a small carburetor jet from my stash of 2-cycle motorcycle jets. It was about .020-025” and installed so as to bypass the pressure regulator, bleeding air back through the fuel return line. I have tested my setup and it allows enough pressure relief to permit the pump to re-prime if I run a tank dry. Before installing the bypass bleeder circuit, it would not re-prime unless I cracked open a line downstream of the pump.

Mark S.

------------------------------------------------------------------------

*From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *On Behalf Of *Kelly Troyer
*Sent:* Monday, June 13, 2005 8:23 PM
*To:* Rotary motors in aircraft
*Subject:* [FlyRotary] Re: Engine Not Starting

Georges & George,

I used a .020 thousands (.508 mm) !

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2


    -------------- Original message from "George Lendich"
    <lendich@optusnet.com.au>: --------------


        Georges,

        Very small is my guess, someone on here gave that suggestion
        some time ago and I can't remember the size they suggested.
        It's just to relieve the pressure after shut down. The loss
        during running is so small as not to matter.

        I thought it was a great idea !

        George ( down under)

        What maximum size orifice would you use in the bypass hose?

        Georges B.

        /-------Original Message-------/

        */From:/* Rotary motors in aircraft
        <mailto:flyrotary@lancaironline.net>

        */Date:/* 06/13/05 15:50:42

        */To:/* Rotary motors in aircraft
        <mailto:flyrotary@lancaironline.net>

        */Subject:/* [FlyRotary] Re: Engine Not Starting

3. Always stop the engine by turning off the fuel pump, so that

there is no fuel pressure in the line. Otherwise, unburned

        fuel may

leak from the still pressurized injectors into the rotors and

        increase

the chances of hard starting or flooding the next time you

        try to start

the engine.

        Bob,

        The suggested low volume by-pass hose ( by passing the fuel
        pressure

        regulator) will also solve that problem.

        George ( down under)

        .