Belt Tension Calculator
2GT / GT3 Twang Tuning
Belt Tension Calculator
Get the target pluck pitch for your printer belts, then match it with a tuner app.
Belt Type
Belt Width
Free Span Length vibrating distance between fixed points (idlers)
mm
Registration Drive Factor recommended 1.5 to 2.0
0.51.01.52.02.53.0
Target Pluck Frequency
0.0Hz
Tension 0.0 lbf (0.0 N)
Enter a span and factor greater than zero.
How to use the twang method
- Set your belt type, width, and the free span length (the section of belt that actually vibrates between two fixed points).
- Pick a registration drive factor. Higher means tighter; 1.5 to 2.0 is the usual range.
- Pluck that belt span like a guitar string and read the pitch with a tuner or guitar-tuner app.
- Tension the belt until the measured pitch matches the target frequency above.
f = (1 / 2L) · √(T / μ)
Stock up while you tune
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