Single Stick Mechanism

thingiverse

Here is the conversion guide to turn your 2-stick TX into a single stick TX: You'll need to change the dimensions of the cavity for each potentiometer, as they vary in size. Additionally, make sure to check the diameter of the stick from your transmitter against the hole in the module to ensure proper fit. The wires will pass through the provided cavity, which you can see depicted in pictures. To start, center the potentiometer before installing it. If you need to make changes specific to your potentiometer, download this file: a SketchUp model of the module, located at https://3dwarehouse.sketchup.com/model.html?id=u073ab68b-cc69-43a6-9e6f-1bbc1e8bd337. If you want more information on the working mechanism, you can view the assembling and testing video here: http://goo.gl/dCqJjR. Now, let's get to the instructions. To change any dimension according to your potentiometer, you can download this SketchUp file from here: https://3dwarehouse.sketchup.com/model.html?id=u47782863-25f0-4398-9004-4a29ba207944. I designed a 3D-printed module to hold the potentiometer in place over the Aileron and Elevator stick, and the design is relatively simple. When released, the rotor comes back to its central position due to springs used here that mimic those found in actual gimbals from the transmitter. Here's how you can covert your 2-stick tx into a single stick tx: First, print the module; the link for this can be found below. Then, make some holes in the gimble itself so that the wires can pass through. Remember not to damage anything else during this process. Tear the gimbal apart and take note of which part is located where; one easy way to do this is by taking pictures. Assemble the gimbal again when the holes are drilled. Now you need to extend the wires from the rudder potentiometer so that they can pass through the hole that was made earlier. It's best if the thickness of the new wire matches the original. Now remove the rudder potentiometer from the gimbal, taking note of the order of the wires and the orientation of their colors. Remove the 2 springs which bring the stick back when released; these will be used later on in the process. Place the potentiometer in the module that was printed. Center it before installing it, remembering that every potentiometer is different so changes to its dimensions might need to be made. The wires will pass through a cavity provided, but see pictures for more information about this process. Hook the springs to the two "L"-shaped brackets and remember that these parts can sometimes break during assembly; in this case, use small screws which come with the servos instead. Before packaging everything up, make sure it's all working by testing it with your plane. If the servo moves in an opposite direction from what you've inputted, switch two of its wires, always choosing to switch outside wires over the one in the middle. Once everything is working correctly, pack up all your parts; if something feels loose, use CA (a strong adhesive) but be careful not to let it go inside the potentiometer, as this can destroy it completely.