I think because of the droop in the tail, it is a Whirlwind Mk7 which had an Alvis Leonides radial, can't remember how many cylinders, 11 or 13 I think, with a cartridge starter in front. The Whirlwind Mk3 had a straight boom & a Wright Cyclone radial. The crank handle took 72 turns for 1 engine revolution which had to be done before the first start of the day. The starter had a blow out disk and could be neatly replaced by a 10 cent coin when necessary!
I had the pleasure of doing 300 exciting hours in these off both Bulwark & Albion & in Malaysia and lived to tell the tale!
