Getting the most out of your ability as a bowler brings a lot of factors into the equation one of which is learning to control the speed of your ball properly.  The speed of your ball is a key factor in putting up good scores and doing it consistently.  When the conditions of the lane vary you need to vary your ball speed if you're planning on winning a lot of games.  Scoping out the alley beforehand in order to determine whether or not it is oily or not is essential.  Over the course of a tournament, the lane could slowly dry out, at which point you would want to pick up the speed of your ball and here's how to do it correctly.

Speeding It Up Learning to speed up your ball is not as simple as throwing it harder there are other factors that we will discuss.  If you've noticed that your ball seems to be breaking too early it's time to raise your speed.  In order to raise your speed don't throw the ball harder with more force, simply place it three to four inches higher in your stance than you normally would.  By holding the ball higher in your stance you're letting gravity do the work of speeding up your ball and it won't change your delivery.  This makes it so that your shot is repeatable as well whereas if you throw it harder that is not as easily duplicated.

If three or four inches are not enough then go ahead and bump it up to six inches or even a foot until you find that perfect speed for the existing lane conditions.  The only downside to moving the ball this much in your stance is that you will be altering the way in which you swing the ball and you may need to adjust your approach by moving back.  However much higher you raise the ball is how much you should slide back for your approach.

Last, but not least if you find yourself on a late that is extremely dry and you are unable to gain enough speed by only raising the ball, you are going to have to put a little muscle into it.  The real key to adding muscle to your roll is coupling it with the forces of gravity.  You should only apply the muscle after you have reach the top of your backswing.  Simply put speed up your ball on the way down and don't rush your backswing it will cause you some headaches if you rush that backswing.  With the added revolutions if your ball has too much hook to it you may want to open your wrist.