Anetnna / Servo Conflict
Hi Bob,
I am not sure which servo you are planning on using, but I was going to install my alieron servo in that general area, but after a long time of planning, then when really getting in to the installation, I found this area a bad place to install the servos... I, fortunately installed my antenna in the area, but just forward of the spar. I saw a number of installations where folks installed their servos under the seats and then clamped on the the push-pull tubes. I guess folks can make this work, but I have heard a number of folks claim that it can introduce an unwanted elevator input, in that the connection is usually sort of short-coupled.
I went through all sorts of "gyrations" trying to do my installation in that area, then finally relented and moved out to my left wing tip - as I had heard of others doing. This worked out really nice and easy to do!
If you choose to also do this, here are a couple pointers... use a pretty substantial push-pull tube to reach in to connect to the bell crank... by substantial I mean something like 3/4" alum tubing, w/ .060 wall thickness... I had a local engineer do all the calcs. for me and this is what came out with the proper safety factor built in... I "lathed" up some rod ends that look just like our elevator tube ends.
The other point is to keep in mind is that on the out-board end, play "what-if" in your mind, and look at the servo end of the rod and say to yourself... if the rod falls of the servo, will it jamb my controls??? I saw that a "guide plate" was in order, which I installed at the second rib in, so that if the rod somehow disconnects from the servo, it will always float in a position where it will not jamb against anything... the plate I made out of plexi-glass.
This is only what I did in the situation - and I am making no guarantee this will work well for your (or anyone elses) installation, good luck, and let me know what you figure out for yours.
Dale
