Anyone know the bore and stroke of the D C Merlin .76cc Diesel

According to a DC ad in the May 1958 Aeromodeller, the .76cc Merlin bore and stroke are: Bore--.375 in., Stroke--..420 in. It is interesting that the 1cc Spitfire and 1.49cc Sabre both have the same .420 in. stroke.

Jim