| rcfighterjock |
12-20-2012 11:09 AM |
RE: Gas engine size To electric Conversion Chart
As someone that has converted a number of planes from glow to electric (even giant scale) successfully, I won't claim expertise, but let me give you a beginners tip. Don't think of it as "Gas engine A = Electric engine B". Start with your aircraft all-up flying weight. Let's say 15 pounds for example. I fly WWII warbirds from various manufacturers. To fly a warbird at reasonably scale speed and have good performance, choose an electric motor that will give you 100 watts of output per pound of airplane. In other words, 1500 watts for a 15 pound aircraft. This is a good, solid place to start. If you want higher performance, say 3D stuff, 150-200 watts per pound is more your place to be. It also never hurts to go just slightly higher in the rated output simply because you don't want to be flying full throttle all the time. That causes heat/stress. Bottom line, look for a motor that is rated to give you the watts per pound you want for the performance level you are seeking. Along with the rated watts of the motor, the manufacturer should give you a cell-count for the battery you will need to use to get that performance and even a suggested amperage for the speed control. Hope this helps! Dave
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