The whole thing about it only being a 4-wheeler in disguise has already been brought up but no-one has mentioned whether or not the locos are at their traction limits or not. Was the #24 slipping to a stop? If not it may be due to the slightly larger drive wheels which will contribute less torque to the rail for the same piston bore X stroke. Also, the greater weight of the loco may be causing it troubles on that extreme grade. It's the same as pulling a heavier train with roller-bearing wheelsets. ;]
Just some thoughts. Trot, the theoretical, fox... On Tue, 4 Jun 2002, Gary wrote: > Regarding SR&RL #24 pulling far less than Fowler.... using Roundhouse info > from http://roundhouse-eng.com/ > > Fowler weight according to Roundhouse: weight 3.25 Kg - loco or 1.0833 Kg > per axle > > SR&RL #24 weight: weight 4.25 Kg - loco or weight per axle of 1.4167 Kg > > Both models have three axles or six drive wheels. > > Therefore normal logic would indicate the SR&RL #24 should pull steeper > grades than the Fowler since axle loading is higher for #24. > > Of course the newer Forney weighs in at 3.3Kg with two axles or 1.65 Kg per > axle! > > So, the question is, "If Fowler pulls much better than the SR&RL #24, why?" > > Gary Lane > Eugene, Oregon, USA, earth /\_/\ TrotFox \ Always remember, ( o o ) AKA Landon Solomon \ "There is a >\./< [EMAIL PROTECTED] \ third alternative."