C172 Throttle
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.
Cessna 172 Throttle Lever – Version 1
This Cessna 172 throttle lever is designed for seamless integration with your simulator setup. It features a linear slide potentiometer mounted on a robust 3d-printed frame, ensuring smooth and precise control.
The assembly secures directly into the throttle panel using a built-in thread and locking nut, providing a firm and reliable fit. If parts appear weak or prone to breaking, consider increasing the wall thickness from 2 to 4 or more to enhance durability.
Friction Control System:
A TPU bush compresses against the metal shaft to create adjustable friction. The more you tighten the bush, the greater the resistance, allowing for fine-tuned control over the throttle feel and ensuring it stays where it's left.
Important Compatibility Note:
Ensure you use a 10K linear potentiometer rather than a logarithmic type to guarantee accurate response and functionality.
Designed initially on an Ender3 printer in 2017, print tolerances have evolved with newer 3d printers. Some adjustments may be necessary for optimal fitment and performance on modern machines.
General Information:
Build Guide
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STEP:
1
Place the 10K ohm linear potentiometer onto the Pot Base (1). Secure with Qty4, M3 x 6mm screws.
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STEP:
2
Screw the nut (6) onto the body (2). The nut has been designed to fit tightly on the thread.
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STEP:
3
Insert the TPU printed Bush (3) into the Body (2). The more infill you use when printing this part, the harder it is to compress and grip the shaft. After several trials I found 5% or no infill best.
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STEP:
4
Insert the friction screw (4) into the body (2) securing the TPU Bush. DO NOT tighten the part down onto the TPU bush yet! You will never get the shaft in!
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STEP:
5
Insert the 198mm x 8mm rod into the unit. If you chamfer the ends, it will make insertion of the shaft much easier. Brass or aluminium is recommended. Steel is a lot harder to work with.
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STEP:
6
Feed the ferrule unit (8) onto the end of the shaft.
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STEP:
7
Tighten the various 3mm grub screws. You do not need to install all 6.
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STEP:
8
Insert the throttle knob (5) onto the end of the shaft
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STEP:
9
Secure with an M4 x 8mm grub screw.
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STEP:
10
Insert and glue the silver printed disc into the end.
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STEP:
11
Place the body assy into the pot base.
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STEP:
12
Insert Qty 4, M4 x 30mm screws through the clamp (7) into the pot base (1)
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STEP:
13
Gently tighten the screws to grab the screw shaft. The throttle should now move the pot back and forth. Increasing the friction screw should hold and set the throttle to the desired feel. Releasing the friction screw should allow the throttle to operate easily, in and out.