mmi16 wrote:DIdn't I read something here recently where helpers were no longer being used?litz wrote:Attempting to pull that train with multiples of applied hand brakes certainly didn't help anything, either.Releasing all the hand brake is asking for a runaway. Train achieved 30 MPH WITH the 33 hand brakes applied and required the use of dynamic brakes 3 times. As I read the report it wasn't a 'string line' derailment but a buff force derailment as the tonnage behind the first car to derail force at least 1 wheel set to climb the rail and derail. Trailing tonnage pushing the car off the track.
That's basically just asking for a clothesline result on a tight curve.
Those can act as braking/retarding force too ...
Also makes me wonder if some of the fancier "electronic brake" technologies would have assisted here.