you probilly want to go with gas or glow. and maybe a bigger airframe than most of the drones here, 80" wingspan or better with alot of surface area to cut down on fuel usage and allow a decent payload. maybe a pusher powered by a DLA 112. as for Rx/Tx if we can figure out how to connect a Xtend 900 module to an APM/oilpan setup you would have that range. i could see using one of those 98in reapers at hobyking when they come back in stock.
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Try this engine, it's suitable for large scale airplanes which aircraft propellers are 22*8,22*10,23*8,23*10.
http://www.agmhobby.com/item/new-agm-55-rc-plane-aircraft-muffler-g...
you probilly want to go with gas or glow. and maybe a bigger airframe than most of the drones here, 80" wingspan or better with alot of surface area to cut down on fuel usage and allow a decent payload. maybe a pusher powered by a DLA 112. as for Rx/Tx if we can figure out how to connect a Xtend 900 module to an APM/oilpan setup you would have that range. i could see using one of those 98in reapers at hobyking when they come back in stock.
http://www.hobbyking.com/hobbyking/store/__10897__DLA_112_112cc_Gas...
http://www.diydrones.com/forum/topics/40-mile-range