# Coefficient of Friction in a V-Belt System -- Torque Changes?

1. Mar 15, 2015

### PizzaWizza

Can anyone explain why, if you increase the CoF of the belt on a V-Belt pulley system, you'd get less torque?

I've increased my CoF in the V-Belt tension formula. You'd have thought that the torque would increase with a belt with a greater CoF?

2. Mar 15, 2015

### billy_joule

This equation? -

Belt tension for V belts: F1/F2=e^((μθ)/sinα))

Your intuition is right, as mu increases then F1/F2 increases so more torque for a given tight side belt tension - I suspect you've made a calculation error.

3. Mar 16, 2015

### PizzaWizza

Thanks again Billy, I'll double check calcs