| Thanks for your comments. Actually, the kit instructions show a process to modify a Cirrus CS-36 standard servo into a propulsion motor. This requires disassembly of the servo and removal of the reduction gears. It sounds like the prop would then be driven directly from the servo pinion. Model manufacturer Dumas claims this works well, but I wondered if anyone else has any experience with this concept. The hull accomodates both this modified servo and an unmodified rudder servo connected to the rudder via a formed rod. Attached photo shows interior space. The model is about 18" long. |