Karl's Review – Boeing 737 Dual Yoke Assembly
An effective dual control system with some considerations
This design has stood the test of time, serving reliably in my dual-set sim for years. However, it’s important to note that this iteration is nearly 8 years old, and while it remains a viable option, some improvements and modifications may be necessary for optimal use today.
 
Key Observations:
 
🔹 Plastic Yoke Shaft & 38mm Box Section – The most significant design challenge was the plastic yoke shaft. Under heavy use—especially with two enthusiastic children pulling in opposite directions—the shaft could break. This issue was mitigated mainly by changing the print layer orientation from vertical to horizontal. However, for a more durable, long-term solution, these parts can be inexpensively manufactured in metal through JLCPCB.
 
🔹 Frame Size Compatibility – The original control frame was designed using 38mm box section, which works well outside of Europe. However, for regions like the UK, where 40mm is the standard, users may need to modify parts to accommodate locally available materials.
 
Final Thoughts:
While this design remains a great way to build a dual control system, it is not how I would design it today. Builders should anticipate potential modifications to fit country-specific standard parts or opt for metal reinforcements where necessary.
 
Boeing 737 Dual Yoke Assembly – Complete Design Compendium
A streamlined, all-in-one package for seamless construction
Karl has meticulously compiled seven years of design iterations into one comprehensive file, simplifying the download process for builders. Whether you’re looking for budget-friendly plastic builds or reinforced metal assemblies, this collection ensures that all components needed to construct a fully functional dual yoke system are easily accessible.
Key Features:
✅ Multiple Build Versions – Choose from various configurations, including:
75mm OD Pipe Roll Version
82mm OD Pipe Roll Version
All-Plastic Build – A cost-effective option
All-Metal Build – Swaps weaker printed parts for pre-made metal components
Complete Pitch Build
✅ Fully Tested & Optimised – After months of prototyping by Patreon supporters and customers, every part has been thoroughly tested, refined, and improved to achieve the latest design revision.
✅ Ender 3 Compatibility—This product is designed around the Ender 3 build plate size (220mm x 220mm) for accessible 3D printing.
✅ Functionality Enhancements—This includes modifications to prevent the yokes from rotating past 90 degrees, improving realism and control.
What’s Included in This File:
📂 STLs – Ready-to-print individual part files
📂 Fusion 360 Design Files – Fully modifiable source files
Organised Folder Structure:
38mm Frame Plans
Checklist Holder
Dual Yoke Head – 75mm Pipe (PVC or Aluminium)
Dual Yoke Head – 82mm Pipe
Floor Plans
Pitch Channel
Roll Channel – Metal Gears
Roll Channel – Complete Plastic Build
Yokes – Captain & First Officer
🚀 Includes dedicated 75mm Yoke Head files + both Roll Channel versions (Plastic & Metal).
Print only from the folder matching your preferred build style.
 
Comprehensive Build Guides
Visit Karl's YouTube channel to see the assembly in action. Step-by-step instructions, print guides, and parts lists can be found [here]
 
PS at request of nearly 90% of sim builders, the raised text has been removed form the yokes.