Speed recorders on P2 locos
Posted: Fri Apr 27, 2018 2:15 pm
Reference to photographs appears to show that Cock o' the North originally ran without any obvious speed recording apparatus, but that this was fitted by 1935 and appears to have featured on the other members of the class too. In many cases however, although I can see the large inverted A-frame supporting the primary bevel drive gearbox for the recorder alongside the right hand rear coupled wheel, plus the shafts running back towards a further bevel gearbox to direct the drive upward into the cab, there seems to be scant visible evidence for, or seemingly a clear lack of the necessary return crank from the right rear crankpin to drive the primary bevel gears.
Is anything known please on the matter of whether the apparatus was fitted complete on all of the locos and of whether the return cranks were either fitted somewhat later than the rest of the gear or were removed at an early date for some reason?
Is anything known please on the matter of whether the apparatus was fitted complete on all of the locos and of whether the return cranks were either fitted somewhat later than the rest of the gear or were removed at an early date for some reason?