T-Rex - Tail servo and boom install

I finally received my Futaba 7CHP radio in the mail on Wednesday. In a previous post I mentioned that I am a dumbass, well would you believe that the only thing that I need is that receiver crystal that I ordered before I ordered my Radio....Grrrrr. A $12 part is preventing me from trimming this bad boy and getting it in the air. Oh well it's in the mail on it's way. Lesson learned.

As the title of this post states I will show you some pics and and a brief summary of how my tail servo install went. Well as I have stated before the instruction manual sucks. It never makes mention of how to install the tail servo, so I had to call on the experts at helifreaks.com. My tail servo is the Futaba s9650, it works great with the futaba GY401 Gyro and both are the best for the tail setup for the T-Rex.

The general idea for the proper setup of the tail servo is to have servo arm, in this case the servo disc, be in line with the pushrod race that is built into the horizontal tail fin mount and the tail pitch ball link. (I know that was a mouthfull) In order to do this the servo needs to be on an angle. The orientation of the servo mounts themselves is very important as if you have them upside down the servo horn is too far away from the boom. It took me quite a few tries to get it right. One more note, I used the supplied rubber grommits and metal sleeves with the mount screws that came with the kit.