Processing math: 100%

Starting-Line Ratio Calculator

Formula

To calculate the Starting-Line Ratio:

$STLR = RER \times TFG$

Where:

$STLR$ is the Starting-Line Ratio
$RER$ is the Rear-End Ratio
$TFG$ is the Transmission First Gear Ratio

What is a Starting-Line Ratio?

The Starting-Line Ratio (STLR) is a measure used in automotive engineering to describe the initial torque multiplication provided by the combination of the rear-end ratio and the transmission's first gear ratio. It is an important factor in determining a vehicle's acceleration performance from a standstill.

Example Calculation 1

Let's assume the following values:

Rear-End Ratio ( $RER$ ) = 3.73
Transmission First Gear Ratio ( $TFG$ ) = 2.66

Using the formula:

$STLR = 3.73 \times 2.66 = 9.92$

The Starting-Line Ratio is 9.92.

Example Calculation 2

Let's assume the following values:

Rear-End Ratio ( $RER$ ) = 4.10
Transmission First Gear Ratio ( $TFG$ ) = 3.00

Using the formula:

$STLR = 4.10 \times 3.00 = 12.30$

The Starting-Line Ratio is 12.30.