Andy. A pair of 280`s should do, ordinary MFA types and on 4.8V or so.., it will be very light and the props tiny. This would be my choice. Below, New Jersey (sort of) plastic toy conversion, one speed 2800…25mm prop 7.2V goes like the clappers. 700mm long, bit wider and chunkier that yours will be.
Must be someone who has motorised your kit can supply better suggestion.
Ashley
