BearcatPilot:

The Hitec HS 225 servos are mini size, with the power of standard servos. Very good fo all-round use if you need the power and have limited space.

If the Sig 1/6 Cub had full span ailerons I'd say go with a single servo, but being scale the linkage makes it a pain. The problem I had with Cubs one and two was aileron centering. They never wanted to come back to the same neutral.

I have Sig 1/6 Cub number three in the box waiting for my attention. And I am debating the use of torque rods for the ailerons, which is something you could probably do from where you are.

It would require drilling holes in the ribs for the wire to go from the aileropns, in line with their pivot, to the center section. The worry I have with torque rods is their long run from the ailerons into the center of the wing, if they are too small in diameter they might act like springs and let the surfaces flutter. If they are large enough to resist this they will be heavy.

I'll most likely stay with the HS 225s. They are only 0.65 wide, laid on their sides they can be fully enclosed in the wing, and with a slight alteration they'll sit on/through the bellcrank mounts.

The Sig Koverall is an excellent choice for covering - easy to put on, strong, and not too expensive.

Short history - I mentioned Cub #3 waiting in the box. My number one Sig Cub is so long gone I remember only that it was destroyed, but not why. Might have been my error, or it might have been one of the kids - had two smaller ones in the house then. Number two was sold when I moved out of Virginia.

A lot of work, but a very nice plane.

Bill.