Motor Mount DHC 2 Beaver

thingiverse

The factory mount isn't crashworthy at all. The metal part bends quickly, and the plywood firewall is flimsy and poorly attached. So I made a more robust assembly. The nutplates go behind the plywood firewall and can be secured with hot glue after positioning them with M4 Allen screws. If the locking nuts are loose in the nutplate, use CA to fix it. Next, fit the motor to the Front 6 part using M3 Allen screws. Attach the assy to Mount 7 and secure Mount 7 to the fuselage. I used UHU Por glue, tightening the M4 screws firmly. Now the plywood firewall is sandwiched between Mount 7 and the nutplates. It won't break easily. The Spinner Nut goes in front of the prop attaching nut with a M6 nut embedded. Hand-tightening is okay. My printer can't do spiral prints, so it wobbles slightly. I suppose the original spinner could work here, but I haven't tried that combination yet. It's wise to re-tighten the Allen screws after the first flights.