sentences:  The vehicle's transmission was a friction drive, consisting of a flat spinning flywheel mounted on the engine which was set at right angles to a rubber lined steel drive wheel which slid from side to side on a drive shaft mounted in parallel to the rear axle.Sprockets on the end of the drive shaft relayed power to the rear wheels via a pair of chains, one per wheel.The friction drive was prone to slippage due to environmental conditions (water) and if the rubber drive wheel was allowed to rest against the spinning flywheel for a long period of time it would develop a flat spot which would produce an uneven power transfer.