Um appears that way. I guess the cylinder is rotated 180 degrees... now wondering if the piston is also. I wouldn't think so. Pretty good idea for tight quarters.
Sounds like a great idea. There are all kinds of styles of lights you could use, the options are nearly unlimited. The thumb-switch controls shouldn't be hard to get from anyplace that does motorsports parts. There are a few threads on turn signals if I remember correctly.
You'd almost be looking for something like a small aquarium pump, or the little submersible pump from a pet fountain, but I doubt they'd be fuel-safe. I have an all brass in-line pump from an old pop machine but it's far too large and far too high a flowrate. Have you checked for pumps for R/C builds? I would think some of the larger planes would have to have something to feed the multiple engines equally.
