Black Horse Bo-209 Monsun 33cc ARTFBigger brother to the sports size Monsun in the Black Horse range, this one is designed for 26 35cc petrol engines such as the OS GT33. At 86. 6in span, this Monsun is big one! All the detail is there to make her scale, including flaps and an oleo sprong nose leg plus glass fibre spats. Construction is the regular, CNC cut balsa and ply parts assembled on factory jigs by skilled Black Horse workers. The design has all the strength where you need it