Hello; I bought a FF 320 OS engine which came with an on-board starter. I have never mounted the engine to a plane, though I have started and ran the engine a few times. The battery pack weighs over two pounds! Granted an engine that size would ride in a large plane which wouldn't feel the weight as much as a smaller plane. Modern engines are very reliable, and with proper vibration reducing mounting, yo9u should be able to get clear pictures with the engine at idle. The big Telemaster probably wouldn't mind the extra weight.