Boeing 737 Yoke, 3d Printed
This page is split into three main sections:
Parts Guide
Print Guide
Build Guide
The ultimate printer I can recommend is the Bambu Labs X1 carbon with AMS or P1P if you have deep pockets. ($1200). It's a massive leap forward in 3D printing, with excellent quality and impressive speeds. It's pretty much press print and go as the software and hardware do the calibration before each print.
This 737 Yoke design was probably one of most most difficult designs to get right. This has taken months to create, print and re print. The Yoke is designed to fit onto the 3d printed control head which is coming very shortly. The fusion CAD file is included if you need to change the design to suit your needs.
The design features:
As close as possible to actual dimensions and curvatures
Working Trim switches
Operational Autopilot Disengage switch
Operational rocker MIC switch
Raised text for easy highlighting
Easy access for components
This design requires a print size of 220mm x 220mm.
General Information:
Build Guide
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STEP:
0
Use the wiring diagram to connect the components as you go along:
https://031b6b45-11f6-46a7-ab8e-17be9aef4dad.usrfiles.com/ugd/031b6b_8af20e060a944c7894d7da42c918d0ea.pdf
There are two ways to connect the trim switches:
1) Both to the sim like the real aircraft
2) One to the sim, one to the electrical actuator.
The MIC intercom/Transmit trigger is not wired in my diagrams.
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STEP:
1
Starting with the LH Arm, Use a paint pen (white) to colour in the raised text.
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STEP:
2
Solder 24/26AWG wires to the Push Button. Ensure the cables are at least 1.5m long
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STEP:
3
Insert the Push Button and Wires into the orifice as shown. Feed the wires through the arm. Secure with hot glue behind the button.
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STEP:
4
After soldering Qty 3 wires (1.5m in length) onto ONE microswitch only. I suggest installing 3 wires so you have the choice of how to wire the switch up later (NC/NO). You do not want to take this all part to rewire it later on. Better to have more and select which wires suit your mode of operation. Please bear In mind, I had no use of these switches because I don't use PTT or intercom. If you use VATSIM, you may need this.
Install 2 ultra mini microswitches and secure with Qty 2, M2 x 14mm dome head screws. Pay attention to the pivot arm location of the microswitches.
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STEP:
5
Solder 3 more wires onto ONE microswitch only. Install two ultra mini microswitches and secure with qty 2, M2 x 14mm dome head screws. Two microswitches are used to help increase the feel of the press and are not used for operation. A total of 4 micro switches should now be installed, two of which are wired.
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STEP:
6
Before installing the trigger, ensure the 4mm screw is free to rotate and enter the trigger attachment orifice without any friction. Install the trigger and secure with a M4 x 16mm dome head screw. Ensure you don't overtighten the trigger so it becomes stiff to operate.
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STEP:
7
Solder 6 wires onto all the legs of the mini momentary toggle switches. Install qty 2, three momentary position toggle switches into the trim body and secure with their locking nuts.
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STEP:
8
Turn the unit over, and push the switch caps (qty 2) onto the toggle shafts. They should be a tight friction fit. Ensure smooth operation of the toggle switches. Adjust the fit and location as necessary.
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STEP:
9
Ensure the Trim switch assembly fit into the yoke arm. Feed the wires through the unit. Once happy with the fit, glue the assemblies together.
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STEP:
10
Before installing the LH cap, ensure all the wiring is completed
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STEP:
11
Install the LH cap and secure with Qty3, M3 x10mm countersunk screws.
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STEP:
12
Moving on to the RH arm, Install the Plug with glue. No wiring necassary on this side.
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STEP:
13
Feed all wires into the centre section from the arms, Push the arms in and glue into place. Then feed all the wires/cables through the half moon in the upper section.
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STEP:
14
Install Top Plate (7) with QTY4, M4 x 12mm Dome head screws, or install the optional checklist Mod.