Belt tensioner - Gurtstraffer
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Simpler design than original of Simhub
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Updated at source:
Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
⚙ Enhanced SimHub Belt Tensioner – Simplified & More Powerful
This is my custom take on the SimHub belt tensioner:
Fewer parts, less hardware needed
More pulling force than the original design
Optimized drum profile: quick slack removal at the start, maximum force at the end
🛠 What You’ll Need
3D-printed parts:
2x Motor Mounts
2x Sensor Plates
1x Left Drum with Cover
1x Right Drum with Cover
Print settings (tested & recommended):
Material: PLA-CF
0.6 mm nozzle
3 perimeters (outlines)
5 top & bottom layers
25% infill
Additional hardware:
M3 screws + threaded inserts
Screws & T-slot nuts for rig mounting
10x5 mm neodymium magnets
12 mm shaft flange
Full electronic hardware as described in the official SimHub guide:
👉 SimHub DIY Belt Tensioner
🔧 Why This Design?
The custom drum geometry ensures that the system pulls slack quickly at the beginning of movement, while delivering increased tension and force at the end of the stroke. This results in a more immersive, responsive, and realistic racing experience.
👉 Perfect for anyone looking to build a powerful, efficient, and DIY-friendly belt tensioner for their SimRacing rig.