??what
On my rig with 39" tall tires, dual cases with 4.7's in the rear case, 1st gear at 5000rpm, total speed is 2.59 mph. Take that figure and think about coasting down a hill at 10mph. Your engine speed would be 19300 rpm at 10mph. That's way too much for the clutch disc to handle. At half that speed (5mph), the disc makes a crazy zipping noise.
