Where Does The “336” Come From In The Speed/RPM/Gear-Ratio/ Tire-Size Formula? Features. Events. How-To ... I'd recommend putting the formulas into a spreadsheet or a programmable calculator.

Here's an example of what this formula looks like when applied to a 350 Chevy with a 3.48-inch ... HOW TO CALCULATE ENGINE RPM. ... If you're dealing with drag slicks or ultra-high-speed tires, ...

For a 50-Hz system, the formula would be: 50 x 60 x 2 = 6,000 no-load rpm ÷ number of poles. Using this formula, you can see that a four-pole motor operating on the bench under no-load conditions ...