SpeedBump caused me to think again about an idea that I have for a two-seat bush plane. His post is about 4-seaters, so I started my own.
I fly a '58 Champion 7ec, behind a C-90. For what little it has in its favor, it's a pretty decent ride. The 7-series (and 8, I guess) Aeronca/Champion/Bellanca/ACA aircraft have (in my opinion) some of the most user-friendly features in aviation. If you have any time in a Cub, you appreciate flying from the front. If you know the Super Cub, you'll like the ease of getting in and out. If you've ever tried to fly a PA-12 from the rear, you'll appreciate the excellent visibility from the back of a Champ.
The cabin is nice and wide (vs. the Cub) and the controls are friendly. Everything is where it needs to be. One down side is the heavy aileron feel but I can live with that. My one- or two-seat bush plane would be something like this:
A late-model Champ frame - 7EC/FC/GC/GCA/GCB - bare, of course. Move the rear landing gear attach points back, in order to fit extended Super Cub (type) gear legs. Enlarge the baggage area, bury the elevator cables beneath the floorboards, make a quick-remove rear seat and a big cargo 'rack' to take the seat's place. Remove the rear controls.
Use Burl's AOSS and safety cables for suspension.
Big, soft tires (29-inch ABWs, I presume) required.
Use metal wing spars - ala Milman or ACA or, since it's EXP, make your own.
Lift struts similar to the Scout are about perfect - they're open top and bottom, and aluminum, I believe.
Flaps are optional; some swear by them others swear at them. I'm ambivelant. They add to both the utility and the weight. If you add them, make 'em *big*. (See Greg Millers Bushwhacker)
Enlarge the tail and provide a balanced (aerodynamically) elevator. The rudder on these is pretty powerful, and may be fine as is.
A bigger tailwheel (ABW Baby Bushwheel) is a must. Add a leaf to the spring, maybe; Champ tails are heavy.
Up front, she needs about 160 hp. Since she's EXP, build a hot-rod engine. Or, keep the cubes up and compression down for car gas. No fuel injection, since mine would be non-electric to save weight.
Long, flat (as in Borer) prop. CS is nice but heavy and complex.
The panel is left nearly empty, with the bare necessities and a portable GPS and hand-held radio. Mount the radio antenna outside for better performance.
Cover the belly with metal for durability and ease of repair.
What have I missed? Unless you're hauling mooses (mooseses? meese?)or groups of fishermen, big cabins aren't necessary. Most of the time I fly by myself.
Jon B.
