| | Posted 11th April 2012 at 09:32 PM by AdamKane Updated 13th April 2012 at 03:18 AM by AdamKane
Horsepower absolutely does factor in a locomotives pulling power. It's not just tractive effort! A 5,000 horsepower locomotive will pull more than a 4,000 horsepower locomotive.
A locomotives most important number is neither tractive effort or horsepower. The most important number to a locomotive is factor of adhesion. Factor of adhesion is a locomotives ability to adhere to the rails.
An optimal factor of adhesion is 4.5. Much higher and the locomotive will be too slow...