Am I mad and if not can someone point / advise me as to the pitfalls of buying and operating them.
47s, at least G2s used to be fairly cheap to buy (I'm not up to date on current prices - check Trade-a-Plane). BUT... the 600 series transmission in the G2 is incredibly expensive to overhaul as is the engine. Also, see this thread with respect to fuel costs:
http://www.pprune.org/forums/showthr...hreadid=188982