Battery for Futaba R127DF
My UltraStick 120 has a Futaba FP R-127DF receiver, six BIG servos, and one little servo for the throttle.
Even with the big Saito hung on the front with a 3 1/2" metal spinner over a big three bladed prop, I needed more weight in the nose.
And on the shelf I had ten brand new Sanyo "D" size NiCd cells.
The UltraStick now has a 4500 mah battery pack in it.
I can fly all day, recharge my transmitter battery twice, and give a couple people jump starts for their cars, all from the airplane battery. And do it all a couple more weekends before I need to recharge it.
That is a slight exaggeration, of course, but that's about what it seems like.
The moral of the story (what story? Who cares) is to use the highest capacity that you can get in the plane AND your transmitter - considering weight, of course - it's cheap insurance.
And unless you want or need the extreme speed, stay with 4.8v sets.
Bill.