The formula to calculate the Crawl Ratio (CR) is:
\[ CR = TR \cdot TCR \cdot AGR \]
Where:
Let's say the transmission ratio (\( TR \)) is 4, the transfer case ratio (\( TCR \)) is 2.5, and the axle gear ratio (\( AGR \)) is 3. Using the formula:
\[ CR = 4 \cdot 2.5 \cdot 3 \]
We get:
\[ CR = 4 \cdot 2.5 \cdot 3 = 30 \]
So, the Crawl Ratio (\( CR \)) is 30.
A crawl ratio is a measure of the number of rotations an engine makes in order to turn a tire one full rotation. It is an important metric in off-road driving, as a higher crawl ratio allows for better control and torque at low speeds, which is essential for navigating difficult terrain.
