I have an AV8R also and I didn't want to try to cram everything inside. I had an old Graupner fuel pump that was laying around after I upgraded to a newer fuel pump so I used it. I bought a cheap 10 amp speed controller and a 2 cell LiPo battery to go with the 20 oz tank that I had in the shop. I then built a box to hold all the componants and then I just hung the box on my bombdrop mechanism when I'm not dropping nerf footballs. It has just two connections, one for smoke fuel to the injector tubes and the other to the receiver. I plugged the speed controller into a spare RX channel that has a slider switch on my 9Z and I can control how much smoke I want, from just barely on and whispy to full blown clouds. I just have to remember to not air up the bombdrop when I am doing smoke. Don't want to drop the smoke system box. Loads of fun.

Roy