At 06:57 PM 4/27/2010, you wrote: >We put one facet elektrical fuel pump in the stubwing and have one >engine driven fuel pump. No reteurn or check valves. Just the basic >thing, I think it is enough. If you have ather ideas let me know. We >are nog finished so wd can modify the fuel system. >Tanks stef den boer ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
That should be antiquate. I have wing tanks only, no gravity feed, and no engine driven pump. I use 2 electric pumps, in parallel, and can pump from either or both tanks with either or both pumps. I installed a complete backup electrical system for the pumps with a very small backup battery. It saved me and the airplane at 10 hours in to test flights when I lost my master buss due to a bad connection. I brought the backup on line and the engine never missed a beat. The system has worked without a problem for 350 hours now. My only caution would be to insure that the carb can handle the pressure of the boost pump. It may be necessary to install a pressure regulator in line. My low pressure pumps indicated a marginally high pressure on the gauge so I installed a regulator in line and set it to the recommended pressure for the carb. No problems. Larry Flesner
