I Suppose With The Free Wheel Sprocket On The Axle, It Is Much Less Jerking Back And Forth Of The Chain. I Like Things Smooth. When I Raced Big Block Fords On The Short Dirt Tracks, I Ran Trw Anti Pump Up Hydralic Lifters And Turned Them To 7200 Rpm. A Lot Of My Fellow Race Driver Friends Did Not Beleive It When I Told Them. Until One Nite I Checked The Adjustments In The Pits. I Heard Some Of Them Say, Look At That, I Didn`t Believe Him.