Dummy Radial Engine and cowl for Hobby King 1450mm Yak-11

thingiverse

This is a dummy radial engine and cowl for the Hobby King Yak-11 1450mm span model. The cylinder mount depth may need to be adjusted for any stock model as my motor mount box broke and I had to replace it and I adjusted the 3dp to fit the new mount. Rocker arm pushrod tubes were made from 1.5mm dia plastic tube, spark plug wires made from solid electrical wire about 1mmm in diameter. cylinder comes up with a mesh error in Ideamaker, but can be repaired there. YMMV The cowl was printed in two parts as in one piece it was a very long print. I have provided both STL's as well as a step file of the cowl. both cowl files have a "phony" support structure in it so I did not have to waste my more expensive water soluble support material. Video of the model flying at: https://www.youtube.com/watch?v=rTOgamBQAmM