Sean Plummer

I started with the motor mounting as this will need to be in place prior to the battery tray installation. I usually do this so a C/G location can be defined early in the conversion allowing all components to be located correctly.This model has a molded motor dome type of firewall, that has the proper thrust angles built in. Using the mold marks as a reference the thrust centerline can be determined as shown in mm. Next a piece of 5/8" thick Aircraft Plywood is used to form the Gearbox mount. Please note the holes drilled into the gearbox mount and motor dome must be square using a tilting table drill press and level. I also used a small 3mm allen screw as a center reference before the Gearbox mount holes are drilled. The Gearbox mounting holes and motor wire slots are now added.