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Old 01-30-2007 | 10:38 AM
  #6  
JustErik
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From: Charlottesville, VA
Default RE: Nitro Models Extra 330 90 - 63"

kw,

I'm sure you know what you're doing, but are you sure your elevator servos are up to the task? You've got a bird weighing in the vicinity of 7 pounds and using two micro servos on the elevator halves? The elevators are very generously proportioned and while the torque rating MIGHT be adequate, what about the gears in those servos? A couple of violent maneuvers and they might easily strip. Also, with those long arms and having the push rod so close in on the elevator horn, you have very little mechanical advantage, meaning that flight loads and little bumps against the elevator will transmit directly to those fragile gears with magnified force. It's possible to smack an elevator while loading/unloading the plane and break a gear, but not have it totally give out until the plane is airborne and under flight load. I think you might be risking a really nice looking plane with those micros. I don't care for long elevator push rods either, but you might want to reconsider your servo selection. If you stick with the micros, it's probably a good idea to check for slop in the gear train frequently, hopefully averting a failure.

Just my thoughts....