ORIGINAL: spaceworm
I guess you are talking about glow engines? The Walbro type carb used with gas engines pumps fuel from as far away as 4 feet, and having a demand type pump, needs no return line. There are threads here on RCU on how to convert a Walbro carb to just a pump, although you would need a tan or purple diaphragm to resist the methanol in the glow fuel. There are also pumps designed for glow fuel that operate off of the vibration of the engine. So, there is no need to reinvent the wheel, just do a search here on RCU to see what has been done.
Good luck.
Yes, glow 2C and 4C. I have an old Robart pump. Uses vacuum/pressure cycle from the engine crankcase. I'm thinking about some aerobatics (IMAC) and want to minimize CG changes throughout the flight. Here I go over engineering again.... [8D] I'm also working an a 20% Zlin 526 and it has a nose about a mile long
The tank sets back farther than I like so the IMAC plane will be a test of sorts.
I'll check out the IronBay and Cline regulators.
Ken