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Old 08-22-2004 | 11:28 AM
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SpecMan
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From: Montgomery, AL
Default Elevator servo cut-outs too small

The elevator servo cut-outs in the fuselage of my new 28% Extra Special were too narrow for a Futaba S9451 digital servo which has a standard size case. The case width is 0.79 inch. I'm posting this so others may be spared my frustration upon discovering this problem.

My normal procedure is to cut the covering over the servo cut-outs diagonally from corner-to-corner. This leaves four small pyramid shapes in the covering which I fold into the servo cut-out and iron down. This results in practically no exposed wood after the servo is installed. Upon completing this on both sides of the fuselage, I discovered the servos would not fit (not even with a hammer). The cut-outs were too narrow by about 1/16 inch.

This is not an insurmountable problem but it would have been nice to know before I ironed the covering down. I had to peel the covering off far enough to grind 1/32 inch off each long edge of each servo cut-out, trial fit the servo, then try to re-iron the covering as best as possible. It looks OK but not as good as before the reworking.

This may be a fluke with my airplane only, but I doubt it. And, other brand servos may fit OK but in my opinion the holes should come from the factory sized to receive a standard size Futaba servo case.

Again, the intent here is constructive (well maybe five percent whining). Still a great ARF and I am looking forward to getting it in the air.