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Austin Underbakke's wood instrument panel (Ed. note--I misplaced the photo legend last issue, so here is what Austin sent us concerning his wood panel.) |
Altimeter |
A/S indicator |
Ignition switch |
Rate of climb |
Attitude indicator |
D.G. |
T & B |
Landing gear indicator |
Engine monitoring system |
G.P.S. |
VHF |
Transponder |
Autopilot |
Rudder trim |
Landing gear controls |
Clock |
25 Breakers |
Aileron and horiz. stab. trim controls are on joy stick |
A finished leading edge and landing gear being fitted to one side. |
This picture is taken from top of the wing showing the balsa stringers have been removed. |
Shown above are the completed leading edges for the ailerons. These are ready to glue onto the spar and glass into place with the rest of the aileron glass. The same technique will work on any of the leading edges (elevator, flaps, fin, etc). |
The hinged mount for the forward wing spar. |
The hinged mount for the rear spar. |
(Ed. note -- Be sure and secure the wing in whatever position it is in, particularly if it is in an upright or vertical position, or it will surely fall to the shop floor at some point and get damaged! It is fairly common to learn that builders have suffered damage to their project due to carelessness. The same goes for protection from other things falling onto or against your project. I've had an eight foot pipe clamp that was carelessly leaning against a poor support fall against a finished and painted fuselage, causing damage that was difficult to repair.)
This shows how the stand is built to clear rib 0 on either side as you rotate the wing onto an edge. |
Leading edge ribs for flaps |
Ed. note: Although these are not specified in your plans set, you builders will probably want to install gap seals for your control surfaces by continuing the wing skin [or stabilizer skin] aft towards the movable flap spar, or aileron spar, or elevator or rudder spar, whatever the case may be. Gap seals will reduce airframe drag and thus should add in incremental increase in your airspeed, while adding very little extra weight.Please note that the gap seal for the aileron along the top of the wing will need relief to allow for "up aileron" movement. Therefore it can't extend quite as far aft as the flap gap seal. Otherwise the wings' gap seal can be continuous from aileron to flap, along the length of the wing.
A good way to make these gap seals or fillers is to use balsa wood as a core. Cut and shape it as needed (wedge-shaped cross section), glue it permanently to the spar and extend your fiberglass over it when you put the final skin on the airfoil. You could also use foam for the core, but I prefer balsa wood in this case. It is a little more substantial material to work with, since any long thin piece of foam is too easy to break during handling. Ed.