That Red thing is the Plug for the 80-90 oz fuel tanks. That means, there will be up to 180 oz on board
weighing around 10 lbs, and able to fly for 10 min....   Most likely it will never get off the ground
with 10 lbs of fuel but it should be able to fly for 6 min with 6 lbs.

Rig #1 had 64 oz or ~ 3 lbs and was good for 3 min where it burned 22 oz/min
 
 
 

Rig #1 had 3 servos in each wing. Rig #2 only has one saving weight and power.
 
 

The new fancy turbine jack  screw, weeks design turbine rotation device consists of one big a%% servo
witch works great. 300 oz of torque and 900 holding power. Much better than my design witch
took 10 sec to move 30 deg.
 

This is Rig #1 batteries.
Top to bottom

Fuel pump                1400 AE NiCD
Receiver                    2 x 1650 NiMH 5 cell pack
Tail rotor   Wing        3000 NiMH 6 cell
Tail rotor   Wing        3000 NiMH 6 cell
Tail rotor   Rudder     3000 NiMH 6 cell
Tail rotor   Elev          3000 NiMH 7 cell

~ 4.75 pounds !!!!
 
 
 
 

This is Rig #2 batteries.  (unproven)
Top to bottom

Fuel pump                1200 NiMH
Receiver                    2 x 1650 NiMH 5 cell pack
Tail rotor   Wing        2150 NiMH 6 cell
Tail rotor   Wing        2150 NiMH 6 cell
Tail rotor   Rudder     2150 NiMH 6 cell
Tail rotor   Elev          3000 NiMH 7 cell

~ 3.5  pounds !!!!

a savings of 1.25 lbs... ah... another min of fuel
 

This is all the #10 gauge wire in Rig #1... It will be replaced with 14 gauge and shoud weigh
about half as much..... ah... another pound...allmost