3W Engine Placement
My 3W 100 installation, measurement, from the firewall to the prop backplate hub is 7 3/4" My Cowl is also mounted the same. The measurement from the firewall to the front of my cowl mounted is 7 3/8" this gave me 1/2" clearance from the back or the prop to the cowl on the right side and a little over 3/4" on the left because of the right hand thrust This Plane was tail Heavy Even with the 3W100 up Front I had to keep everything as far forward as possible. I even have the battery for the 4 Ail. servos on top of the engine box under the cowl outside the fuselage it is a 2300 6volt ni cad pack!!!