Recent Blogs
Screw-cutting/slide Lathe Motion: How It Works, Diagram, Parts, Formula and Uses Explained
Screw-cutting lathe motion synchronises spindle rotation to carriage travel through a leadscrew and gear train, letting machinists cut precise threads on metal lathes.
Watch Train: Ideal Compound Gear-ratio and Speed Calculator
Follow a barrel-to-escape going train and calculate ideal speeds from four entered ratios and barrel period. Tooth geometry and torque are not calculated.
Going Train Calculator: Clock Gear Ratios and Speeds | FIRGELLI
Calculate speeds and barrel period through four clock-train gear stages. Explore direction reversals and distinguish gear ratios from escapement timing.
Gear Direction and Speed: Three-Gear Idler Train Calculator
Calculate ideal speeds in a three-gear idler train. See why two external meshes leave the output turning in the same direction as the input.
Compound Gear Train: Two-Stage Ratio and Speed Calculator | FIRGELLI
Calculate stage ratios, total ratio and ideal output speed for two external gear pairs linked by a common intermediate shaft. Includes examples and animation.
Four-Speed Change Gear: Ratio, Speed and Torque Comparison | FIRGELLI
Compare four ideal speed positions from a base tooth ratio and fixed √2 steps. Output torque uses 95% assumed efficiency; physical gear design is separate.
Continuous Shaft Motion Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
Explore a rigidly coupled shaft drive. Calculate angular speed, input power and useful load torque and power using an entered overall transmission efficiency.
Wheel Train Mechanism Explained: How It Works, Gear Ratio Formula, Parts, and Horology Uses
Explore three ideal gear-train stages. Compare the combined speed multiplier, output rate, revolution time and lossless torque ratio.