Power plant and aileron servos.

The TH .75 engine is fairly new. It had about 1/2 gallon of fuel run through it when the black metal throttle arm fell off the carb. You know how Tower is about getting parts for some of these items..... After 6 months of waiting for a carb, I decided to buy an SK .90 carb instead. It's pretty well known that the SK .90 carb will fit the Tower engine case. The SK .90 carb is about 1/16" too long on the throat, so you have to sand a little off the bottom where it fits into the crankcase. I removed the barrel and stuck the carb body on a bench sander. Took about 2 seconds to remove 1/16" of aluminum from the bottom of the throat. I installed the carb with an o-ring and a little RTV black silicone sealant.


JR 7005 low profile coreless servos should do the job nicely. I can't remember the torque - I think it's around 60-70oz in. I've had these servos for years. One of them is factory reversed. I cut my servo doors from 1/16" hard ply wood. Laid out the holes and cut the openings with a dremel.