ORIGINAL: captinjohn
Yes 2 batteries. One 4 cell 4.8 for ignition and one 5 cell for more power to servos. I have read over and over the ignitions last better on lower voltages. When I test run my Mintor 22cc engine, it started and ran perfect at only 4 votls even. Good enough for me! Capt,n
You will be fine with the separate 4.8 volt battery. That's what I used on my test stand. On my planes, I normally run a one 5 cell battery (for both receiver and ignition) and use 2 dropping diodes for the ignition. On this engine I had to go to 1 diode. It had a miss at 1/2 throttle and above while running at the lower voltage from the 2 diode (about 3.8 volts) setup.