Originally Posted by PistaRider311

When you skid, you are putting the weight of your body, reduced by whatever gear ratio you are running, on the cog/lockring. That means that if you weigh 180 lbs and are running a 2.5:1 ratio, you are applying 75 lbs of force to the cog/lockring. Assuming that the lockring wrench is the same length as your cranks (which is approximately true), you should only have to put 75 lbs of force on the wrench in order to achieve the same force.