Piston Speed Calculator

Find the mean piston speed from stroke and engine rpm.

Mean piston speed 17.2

Formula: v = 2·stroke·rpm ÷ 60

Step-by-step with your numbers:

1. Values used:

2. Stroke = 86

3. Engine speed = 6,000 rpm

5. Mean piston speed = 17.2

Did we solve your problem today?

Mean piston speed indicates engine stress and is fairly consistent across engine designs.

The math behind it

v = 2·stroke·rpm ÷ 60. The piston travels two strokes per revolution.

86 mm stroke at 6000 rpm → 17.2 m/s.

What's a safe limit?

Production engines rarely exceed ~25 m/s mean piston speed.