RE: XTREME F-4 BUILD/ BY MISTERMNKIM
I didn't like the idea of 5 airlines and 2 servo wires to each wing. That'll be a pain every time I assemble/disassemble it. The first thing I did was install a button valve in each wing to operate the inner gear door, thereby eliminating the need for two airlines.
I noticed that the retracts were pressed against the upper wing skin. I'm sure I'd be seeing cracks there after the first hard landing. I shimmed the retracts with 1/16" plywood to allow some clearance, then I had to tweek the door fit.
The way the gear door cylinders are installed there isn't much leverage holding the gear door shut. I added a small magnet to the doors to keep them from blowing open in flight. After checking the function everthing works fine.
Now I'll have to figure out how I'm going to operate the nose doors. With the E nose the two doors need to be sequenced with the gear. If I can locate them properly I can do it with two more button valves, or maybe I'll buy a sequencer.
More later,
Joe