INSTALLER BETA
Torsion Spring Calculator
Brand-neutral standard-lift installer testing version — Beta 2.6
Instant results — no contact information required. Enter verified measurements and press Calculate spring options.
Testing only: This version produces engineering candidates, not installation approval. A trained installer must verify drum data, turns, space, and final door balance.
Testing only: This version produces engineering candidates, not installation approval. A trained installer must verify drum data, turns, space, and final door balance.
1. Door information
Inches
Inches
Springs disconnected, pounds
Standard front-torsion layout only
2. Spring and space limits
Inches available before winding
Used for growth/fit screening
3. Existing spring data (required only for conversion mode)
Enter either 10-coil or 20-coil measurement in inches.
Ready. Start with the published test case, then replace values with a real door.
Beta guidance: Random numbers may produce no valid spring. That is expected. Use an exact door weight and either the published 400-8 test case, a known drum multiplier, or verified existing spring measurements.
Installer feedback
Use this after an installer reviews or tests the recommendation. The file can be sent back to improve the engine.
Field balance interpretationEnter hold-force readings to see an automatic test interpretation.
Actual spring comparisonEnter actual quantity, wire, ID, and length to compare installer selection with the calculated target.
Local beta test summary
0Total saved
0Accepted
0Modified
0%Acceptance rate
Complete the verdict and field results after testing.