Unless there is a new release of the CG Super Chipmunk that is a lot larger than the 90 four stroke size one that CG kitted, a single aileron servo is all you need. In fact I have an older pattern plane, almost 90" span with a 120 four stroke engine and it flies just fine with a single "standard" size (50 in oz) servo on each aileron.

The issues of balancing the mechanical linkage and the servos through a match box or the likes is not something to get into for your first aileron plane. In fact, if the Chippie is your first aileron plane, I would get it finished and set it aside for a while and fly a Stick or 4* or like plane for a bit first. Gliders and powered planes are two completely different animals. Iam having issues controlling my glider as it responds so slow.Of course, I have problems controling my powered planes as the respond to quickly also. A powered plane will respond much faster to the sticks.So anover powered dual servo, super fast aileron setup is not a good jump for you yet. That is for the big, 33% planes and above and for the aerobatic crowd.

Don</p>