Brief Description: Trimmed Firewall Corners/Install Engine Mount
I bought more high-speed cutters for the Dremel, 194 and 9903-tungsten carbide cutter. The 9903 is supposed to be for stainless steel. I also picked up 2 ft-lb torque wrenches from Dave Manning. I used the cutters and the Dremel to trim the corners of the firewall and the fuselage skin so that the landing gear will fit. I mounted the battery box on the firewall. I mounted the engine mount and torqued the top two bolts to 43 ft-lbs, per Dave's torque value chart for Grade 8 bolts. I saw that the washers were being deformed, so I did not torque any more bolts. After more searching, I found another chart that states the AN6 bolts should be torqued to only 13.3-15.2 ft-lbs. I got the landing gear rods out and unpacked them. I took the camloc brackets off the sides of the firewall. I riveted the bottom center holes of the firewall to the bottom skin.
Engine mount on the firewall
Firewall riveted to bottom skin in center of firewall
