# How do you calculate gear ratios with 4 gears?

## How do you calculate gear ratios with 4 gears?

To calculate the gear ratio: Divide the number of driven gear teeth by the number of drive gear teeth. In our example, it’s 28/21 or 4 : 3. This gear ratio shows that the smaller driver gear must turn 1,3 times to get the larger driven gear to make one complete turn.

**How do you calculate gear and speed ratio on a manual transmission?**

The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs).

### What is the difference between close ratio and wide ratio 4 speed transmission?

A: A wide-ratio transmission has a more drastic change in gear ratios between first and second, and third and fourth, with fourth gear being 1:1. A close gear ratio is more gradual, but again ending up at 1:1 in fourth gear.

**What is the formula for gearing ratio?**

Following is the most common formula for calculating the gearing ratio: Gearing Ratio = D. E. The gearing ratio calculated by dividing total debt by total capital (which equals total debt plus shareholders equity) is also called debt to capital ratio.

#### How do you determine how many teeth you need for a gear?

The number of teeth (z). This value is: z = d/m. Module (m). Ratio between the pitch circle in millimeters and the number of teeth.

**Which is correct formula for speed ratio?**

To calculate speed ratio, otherwise known as gear ratio, you divide the number of teeth of the input gear by the number of teeth of the output gear.

## What’s the difference between wide ratio and close?

The wide ratio has a lower first (and second and third) gear providing more torque multiplication in 1-3. The gear ratios have a ‘wider’ spread as opposed to the Close raio box with ratios that are more closely spaced. Close ratio = less rpm drop between gears.

**What is close ratio manual transmission?**

A close-ratio transmission is a vehicle transmission in which the difference between the gear ratios of the gears is minimized relative to other transmissions used in similar vehicles. The use of “close” describes nearness/proximity rather than open-ness (i.e. open vs closed).