You seem to be suggesting that by running the engine at lower RPM the fuel consumption will go UP ? This is simply not true. If that was true the engine would burn the most fuel at idle and the least at full throttle. The specific fuel consumption for the power produced is probably less efficient and goes down but not the actual fuel consumption for a given period of time.
I have a Jet Tech kevlar tank in my Hotspot. 105 ounces made specifically for the Hot Spot $ 145.00. I know its enough capacity for a reasonable flight time, and would be even with a RXI 180, especially since you are going to turn the thrust down to that of a 140 or 120 or 100 .
Google search Jet Tech Fuel Tanks.
Last edited by turnnburn; 08-30-2017 at 04:22 AM.