Thanks for the reply, have been gone a while so late in response.
Went to your site but didn't find anything about the wet fuel pump set
up. I a very interested in this.
Put a pressure gage between tank and pump. This will measure how much
safety margin you have. It's that pressure drop at pump inlet that's your
risk item. Compare that pressure to results from Hodges fuel tester and
wham, you know exactly how close you are. This is a key safety
concept...don't let yourself describe fuel system as good or bad....measure
it!
I know guys who used clear fuel lines so they could see the fuel turn
to vapor, but you only see things when it's too late. Pressure gage tells
you how far your design is from vapor lock. That way you know you will be
safe when other factors affect vapor point. Like pump temp, fuel type,
flight attitude.
All filter screens that get plugged are from one cause....using vacuum
cleaner to remove debris. Ordinary vacuum cleaner displaces too much air. It
causes 80% of the debris near nozzle to shoot off to corners of tank. If you
just put duct tape over most of the nozzle, then you have zero risk of
debris.
Glad you are concerned about pressure drop at inlet. You definitely
don't want to add fine filter there.
I just added wet fuel pumps to my plane. One of the safest approaches
you can use. Details on my web site.
-al wick
Cozy IV powered by Turbo Subaru 3.0R with
variable valve lift and cam timing.
Artificial intelligence in cockpit,
N9032U 240+ hours from Portland, Oregon
Glass panel design, Subaru
install, Prop construct, Risk assessment
info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html