Interesting mast "long range" fueltank. Can't find any information about it, but seemed to be used on different trikes. What do you think? Would you feel confortable flying with this fueltank?
Here my first design had the fuel pressure regulator up top above the cl...or under the rear seat to the rear of my tank. I added a pressure gauge so...e the over 4 bars or 50 psi. My electric fuel pump puts out 90 psi coming off the tank with a feed back to the tack...
There is the fuel block on the top of the 912 engine (for newer model). The rerun line has to come out from the top of the fuel block. So air in the fuel line can escape quickly to the tank through the return line.
http://www.turtlepac.com/
5.3 Liter fuel bladder HERE
This is the standard fuel bladder for ferrying airplanes, etc. It is...(~$500)
It can be connected to a system to fill your main tank, or you can pour it manually...
The oval tubing slid right into the build in area provided in the Tanarg frame just behind the fueltank - all the more reason for a nitrogen fired system