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Boeing 737 Throttle Quadrant v3 Trim Mod

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. 

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This Modification (MOD) was so highly requested, I had to take a day away from the dual control build and get it sorted. This Mod enables the trim of the aircraft to be controlled manually by the trim wheel instead of using the trim switches on the control column Yoke. This MOD also gives your unit better aesthetics.

These trim wheels are normally electrically driven by a motor. (Not designed for motor use yet, It’s coming in the new year!)

The trim wheels can be used by any of the following components:

1) 10KOhm Pot (270 Degrees of rotation)
2) 10KOhm – 10 turn Pot (10 rotations)
3) Encoder (Endless rotations)

I highly recommend that you only electronically connect the Left trim wheel for trim control. Connecting both electrically for manual trim will confuse the system/program.
These trim wheels have designed to be fairly balanced as they are not connected together. Therefore, there is a large mass opposite the handle on each wheel. In the real aircraft they are 180 apart to balance each other out.
This MOD will require you to reprint both the RH & LH End CAPS.

This design requires a print size of 220mm x 220mm.

General Information:

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Build Guide

Build Guide
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