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Ronplanes
02-10-2007, 10:24 AM
can I see a picture or drawing of a doulble tank set up on a heli that would as well on an airplane, I have a tight tank problem and need to use another smaller tank to give me the proper duration on my plane. let me know if my drawing is wrong or OK=TANKs

CL415
02-10-2007, 11:15 AM
You will want a closed loop set up for equal presure to engine .
here it goes!

1) Engine draws from tank #1 clunk.
2) Overflow on tank #1 is connected to tank #2 clunk.
3) Tank #2 overflow goes to open air or muffler pressure.
4) With this setup, tank #2 completely empties before tank #1 drains at all.
One advantage of this setup is that for the first half of your flight time flat spins etc are much safer since you're very unlikely to suck up any air bubbles.
you can Email me for a picture of the set up OK

Have fun!

CL415
02-10-2007, 12:22 PM
Remember try to keep both tanks at the same height in proportion with the carb or gravity takes over.
This set up also demands a little more pressure for fuel supply for a plane because of constant throttle variations, a good idea would be to modify your fuel line size and tubes going into the tanks, make it a little bit bigger to avoid flow restrictions and reduce it once at the carb you will se a difference in the throttle response coming out some of the maneuvers.

Have fun!

Ronplanes
02-10-2007, 04:24 PM
Remember try to keep both tanks at the same height in proportion with the carb or gravity takes over.
This set up also demands a little more pressure for fuel supply for a plane because of constant throttle variations, a good idea would be to modify your fuel line size and tubes going into the tanks, make it a little bit bigger to avoid flow restrictions and reduce it once at the carb you will se a difference in the throttle response coming out some of the maneuvers.

Have fun!,:rolleyes: I HAVE A CANARD AND THE ONLY WAY I CAN DO IT IS TO PUT THE LARGER 4 OZ TANK NEAR THE ENGINE AND THE OTHER 2 OZ TANK FURTHEST A WAY IS THAT OK TO DO?