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Old 08-09-2015 | 01:08 PM
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SrTelemaster150
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From: Brasher Falls, NY
Default Fuselage Servos

The throttle & rudder servos are pretty much as per the plans.


I deviated a bit on the rather heavy high torque metal gear elevator servo opting to mount it amidships rather than in the rear of the fuselage under the horizontal stabilizer. A Sullivan high stress 4-40 flexible pushrod was employed & it was routed high in the fuselage to run next to one of the stringers for aesthetic purposes. This required a mount to be fabricated high under the wing saddle. I used some 3/8" x 1/2" basswood to fabricate a double "H" section frame.


The spacing was such that the pushrod centers just inboard of the last hole in the heavy duty servo arm.


In the morning I'll get the horizontal & vertical stabilizers mounted, install the control surfaces, finish up the pull/pull cables on the rudder, establish the finished length of the elevator pushrod & solder a clevis on the servo end.

It will then be time to tackle the wings & I have several projects/modifications to do. The servo trays need to be modified slightly for the low profile 77 oz in servos, I need to fabricate a custom "Y" harness for the flaps, custom length servo extensions for the ailerons & I need to wire one of the flap servos for reverse operation to eliminate the need for a servo reversing "Y" harness.