Had a chance to weigh everything. 8.4 pounds with tanks dry and a 2oz piece of lead in to account for the header tank. Kero weighs 80% of water by volume, (according to google)… ;-) So, the 32oz tank will be roughly 1.6 pounds of fuel, so take off weight will be right at 10 pounds. This is with a 2100 life turbine battery and a 2600 liion. My 8S habu 32 is gone, but this plane sure feels lighter than it.

I think Ilja and I had a communication error, the pipe might be too short. Need to see where CG is, then see if it will work. The pipe is fine if the turbine is back farther, but where I had it, its 4cm too short. ;-(