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Re: [FlyRotary] Re: Vapor Lock
Hi, Herb....unfortunately this is not exactly the
case. I installed the vent line and bypassed the Facet pump at the same
time, then I was unable to induce vapor lock. Since I accomplished both mods at
the same time, I'm not sure which contributed most to the cure. I have not
tested the engine with only the sump tank vent, or only the Facet pump bypassed,
only with both mods accomplished. Since I took both Excedrin and Tylenol,
I don't know which cured the headache. Paul Conner
----- Original Message -----
Sent: Wednesday, February 23, 2005 5:56
PM
Subject: [FlyRotary] Re: Vapor Lock
Since Paul was able
to duplicate the problem with the Facet in the line and the 3/16 od vent line
installed, and was NOT able to duplicate the problem when he removed the Facet
from the system, I would interpret that (1) The vent line is not large enough
to vent in that particular situation and (2) The Facet pump is not necessary
and perhaps even in the way.
Paul, I know you will
stay with it until you feel comfortable, but if you leave the pump in the
system (a proven problem), I would like to see you go to at least a 3/8 od
vent line.
Herb
-----Original
Message-----
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bartrim, Todd
Sent: Wednesday, February 23, 2005 5:30
PM
To: Rotary motors in
aircraft
Subject: [FlyRotary]
Re: Vapor Lock
Hi
Paul;
I'd suggest that now that you have the vent tube, you really aren't concerned
whether the Facet pump will allow backflow. As a matter of fact I 'd even
suggest that I wouldn't want it, but I'd certainly want the ability to pump it
forward to force cool fuel into the header tank, thereby forcing any possible
vapour back through the vent line. I don't have any problems drawing fuel
through my Facet pumps and I wouldn't be without them.
Just my 2
bits
Todd
Thanks for the
info, Tracy. My only concern is this....if the Facet pump was not
involved, might it be better to have it back in the system so that
if I have a future problem, I could turn the Facet pump on to pressurize the
sump tank with fresh fuel? Ed seems to be comfortable with this, and
has had to use it.
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