dash–calculator

Panel 07

Machines and Energy calculators

Driven pulley speed, speed ratio and belt speed, and the belt length for two pulleys: workshop sums with the formula shown.

Calculators on this panel
2
Typical formula
n₂ = n₁ × d₁ ÷ d₂
Photo collage: a workshop belt drive with two steel pulleys and a rubber belt, and a close-up of a glowing light bulb filament.

Top of the panel

Readout 07-0032Pulley RPM CalculatorDriven pulley speed875 rpmFind the speed of a driven pulley from the driver speed and both pulley diameters, plus the belt speed. Readout 07-0033Pulley Belt Size Calculator (Belt Length)Belt length59.05 inBelt length for an open belt over two pulleys from their diameters and the centre distance.

Everything in Machines and Energy

PageWorks outExample result
Pulley Belt Size Calculator (Belt Length)Belt length59.05 in
Pulley RPM CalculatorDriven pulley speed875 rpm

Every calculator uses a standard formula and shows it. How the calculators work.