hi I have a question about the db br 146.2 that means on the speed storyteller on the right where the Kn is the following numbers 10 20 30 40 60 70 knowing that the db br 146.2 has 300 kn
kiloNewtons: the amount of power the motors are drawing. US and UK locos read current in amperes instead.
Some of the newer North American locomotives, such as the AC4400CW, read in Klb (kilo pounds), which is functionally equivalent to Kn, except in imperial terms. Cheers
Did I understand your question correct: You want to know why the tractive effort indicator only goes up to 70KN, when a 146.2 is supposed to have 300KN? Answer: The tractive effort indicated is the tractive effort of one traction motor, of which the 146.2 has four. You can see this on the cab display, where is it labeled: "Zugleistung pro FM" (or something similiar). FM is the abbreviation for "Fahrmotor" (again, I believe. Could be a different word, but would have the same meaning). Translate this into english and you get "tractive effort per traction motor". So therefore 4 * 75KN = 300KN and everything is well
For those not familiar, 1 pound (force) is around 4½ Newtons, or 10kN = 1 (long) ton. I remember this as a Newton being approximately the weight of an apple.