The ROTO 85 FSI 4-stroke inline gas engine from ROTO is especially developped for scale models which need an inline gas engine like the Spitfire, P-51 Mustang, Typhoon, ME 109, FW 190, P-39, P-40 Warhawk, Hawker Hurricane, JU-87 Stuka etc.
Detailed overview of the delivery of the ROTO 85 FSI inline gas engine:

Dimensions of engine:
