ORIGINAL: Primodus
I should have stated this in my original post, but the reason I switched from the C-cell to the RX battery was because the C-Cell didn't seem to give enough heat to the plug to start the motor. Will a D-cell provide more heat? or just more time?
Why not use rechargeables? I have an on-board glow, and I use 2 AA NiMH batteries at 2000 mAh each, wired in parallel, gives 1.44VDC and 4000 mAh at full charge, and I have run them down to 1.25VDC without any problem. They have been lasting me 3-4 10 oz. tanks of fuel before they need recharging, and that's running the glow on all the time that I'm in the air (it's set on manual, I just don't turn it off, usually). It's an inverted .65 Saito in a 1/5 L-4B. I've also used a sub-C 1500 mAh NiCd, good for 2-3 flights. The NiMH batteries are Radio Shack batteries, I just soldered the wires , and wrapped the whole thing with electrical tape to cover the ends. It doesn't weigh nearly what a C or D cell does, I just recharge them whenever I recharge my Rx. batteries.