RE: 50CC REVOLVER!!
Guys - sorry about my misspelling; chief; people call me edwin newman because i obsess over misspellings [&o]
I fully unpacked the R90 tonight; i have not started the build, so i did not start a build thread, but i thought i would post some pics and observations.
The wings should have good visibility, top from bottom.
Airfoil is semisymmetrical like the R90, and appear to be foam core.
Ailerons are attached with 5 hinge points. For that much surface, had i been hinging, I would have used 7 (two at each end, and three across the rest of the surface), but i don't feel strongly enough about it to rehinge them.
Hstab and elevators look similar to the wings.
There is no balance tab for the elevators.
The elevator servos mount to plywood aft. There is enough plywood that if one wants to make the elevator servos vertically symmetrical, it could be done. I have not checked for horizontal clearance (do the servos meet in the middle), so it might not be possible.
Rudder will hinge into the vstab with 5 large points; probably ok.
There is a ~1/2" tube extending from the radio deck to the tail feathers into which one can run the elevator servo cables; nice touch, perhaps some weight.
There are two small tubes through which the pull-pull cables run for the rudder; again a nice touch.
The gas tank is huge - probably 32oz, or maybe 1 liter. Has to be good for 15+ min of run time.
Spinner is large also - 5" diameter, looks a bit like a P51 spinner.
Firewall is heavy (~1/2" thick) laminated stock, keyed into holes in the sides of the engine box; very secure. Upper and lower surfaces are keyed but no into a box; that joint probably will get some fiberglass reinforcing from me.
The cockpit has an instrument panel.
As i said before, i think the plane presents far better in person than it appears in the website photos.