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----- Original Message ----- From: "Ernest Christley" <echristl@cisco.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, February 11, 2005 12:24 PM
Subject: [FlyRotary] Vapor lock
I'm not sure that I understand vapor lock completely. Is the problem
that the fuel gets hot, or that the fuel boils and then the pumps no
longer work?
I have a plan for a stone cold simple fuel system. With only one tank
positioned high, I plan to put both fuel pumps directly under the tank
which is located behind the cabin (tractor configuration). Position the
fuel regulator beside the pump, and I will only having a single line
running out to the engine compartment. Think of it as one LONG header.
The issue will be that the fuel will not 'circulate'. What goes out to
the header at the engine will stay there till it gets used.
Is this a prescription for 'vapor lock', or will any boiling fuel simply
get blown through the injectors?
Hi, Ernest....I might have it wrong, but I seem to recall that I was told to put the fuel pressure regulator just AFTER the injectors/fuel rail. That's what I did...maybe that's part of my problem? Paul Conner
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