Napoleon/Lynx Spring Calc vs SpringCalc

Simplify garage door torsion spring calculations with us. Our app supports single and duplex assemblies and accommodates various lift types. Save your calculations locally or easily share them with others. Need parts or assistance? Connect directly with a local sales representative at Napoleon/Lynx, a global leader and one-stop source for garage door manufacturing and distribution. Key Features: - Calculates torsion springs for single and duplex assemblies. - Supports standard, high, and vertical lifts and various drums. - Save calculations locally and share with other apps. - Contact us directly for sales by region.

SpringCalc is a professional engineering calculator for mechanical springs. Enter any subset of spring parameters and SpringCalc solves for the rest — wire diameter, mean diameter, coil count, free length, spring rate, force, stress, safety factor and predicted fatigue life. Features: • Three spring types: Compression, Extension, Torsion • 15 built-in materials (Music Wire, Hard Drawn, Oil Tempered, Chrome Silicon, Chrome Vanadium, 302/304/316/17-7 PH Stainless, Phosphor Bronze, Beryllium Copper, Monel 400, Inconel 600/X-750/718) with JIS aliases (SWP-A/B, SUS302/304/316-WPB, SWOSC-V, etc.) • ASTM/SAE and JIS B 2704 calculation standards • Constraint-based solver with Wahl factor stress correction • Goodman + Basquin fatigue life prediction with environmental and temperature derating • Force-deflection and S-N curves via Swift Charts • 3-candidate design suggestion when system is under-determined • Standard wire gauge snap (ISO 2702 / SWG) • Custom material editor • Metric, Imperial and Mixed (mm/kgf) units • PDF and text report export • Save designs locally with SwiftData • Localized in English, Traditional Chinese and Japanese References: Shigley's Mechanical Engineering Design 10e Ch.10, JIS B 2704:2009, JIS B 2705:2014, SMI Handbook of Spring Design. All calculations run entirely on-device — no account, no cloud, no tracking.