Rc nitro helicopters (car drone) radio controlled

Radio controlled model helicopters 1 x graupner 60, 2 x raptor 30, 1x nexus 30, 1 x bell 30 and a 60 size fuselage composite material, plus radio gear various how to fly books manuals etc etc all as seen in photos, this lot was a genuine loft find so will need a certain amount of restoration all have engines some have servos, I know nothing about these but will try and answer questions, please study photos as they form part of description £315