I did the same thing. I have an old turbine fuel pump on a 10 amp BRUSHED E-flight speed control. I run a 4 cell 600mAh nicade pack. I get 3 flights on it before I have to charge it. BE SURE TO REMOVE THE RED POWER WIRE FROM THE LEAD THAT PLUGS INTO YOUR RX when running a separate battery for the smoke pump.

Here are a couple of pics and a Video of my F-15. The smoke system is in the center line tank. All I do when I want to use it is hook up a fuel line and a servo lead to the tank.

Everything for the smoke is in the center line drop tank. This includes a 32 oz. smoke tank the smoke pump and speed controller, Battery and a small 4 oz. Helicopter header tank. This is so you don/t get the broken smoke during Negative G maneuvers. . Also I used 3/16 brass tubing between the double wall of the tail pipe and exit it at the end of the tail pipe. I don't want the mess inside the tail pipe and I don't want the chance of a fire. I have seen it happen. When filling the smoke tank, you must also clamp or valve off the before or after the pump. If not the pressure from filling the tank will push smoke oil past the pump and out the nozzle. This makes a big mess (ask me how I know)

One more thing that is important is to put a one way check valve between the pump and the injector nozzle. If you don't, the pressure from the thrust of the turbine can cause the pump to lose its prime.

http://www.youtube.com/watch?v=iEKASGZTPsE

Hope this helps

Joe Lewis
Kingtech
K-80 and k-140
Owner