Welp, it took me from 4pm to 12:30AM, and it's heavily modified. But it's done. I've put a Cox 0.049 on an FT Commuter.
She's not painted, but she's a pretty bird. Especially from this side, with the jug visible poking out the side of the nose like that.
Bit of a closeup of the nose as a whole. Can see the vent/fill like poking up. Throttle's at about 75% here; it was pure coincidence but I love how it ended up with the throttle being more open the more of the throttle arm pokes up into the breeze. 'Course with these Cox engines and the choketube throttles it isn't like you've got a full, linear power curve, but eh. You've got roughly a few points between idle and full blast. It's enough.
I can access all necessary adjustments for engine operation, too. Repositioning the throttle arm, adjusting the throttle linkage, fuel mixture, and glow head servicing all easily done. Should cover most operations.
Top down of the intake area. Silicone line is attached to the vent of the tank, fuel chooches in here, and then air, and perhaps fuel again if I leave it on the bench upside down haha. Don't plan on doing much inverted shenanigans with this one so I'm not overly concerned if it's a bit incontinent when inverted. Can also see the firewall/engine mount I made for it.
I ended up using the battery hatch as a battery hatch after all! And in fact, it's carrying a 2s 850mAh LiFE pack under there. Not too far removed from what's *supposed* to be there. Got it sitting sideways and the CG's dead nuts perfect on an empty tank. Will be slightly nose heavy on a full tank, but not by much. Tank's CG is maybe half an inch ahead of the airplane's
if that.