by Allen Hazen
I have an awful feeling that the real New Haven experts will be disgusdted at the stupidity of this question, but...
The New Haven had three types of big passenger diesel: the Dl-109, the PA, and the F-M CPA-24. These units were often used in multiple: I think up to three units on the heaviest passenger trains, but since the new Haven thought of at least some as dual-service types, perhaps more on Maybrook freights. Were lashups always of one model, or were units of different types sometimes m.u.-ed?
(I know that inter-model m.u. was common with later roadswitcher types: I think I have seen a photo of a 1200, a 1400 and a 1600 on the same train, and mixtures of 2500 and 2550 were common. With the earlier 0700 units, the three types had very different electrical gear: I would bet they had different short-time ratings which an engineer of a mixed lash-up would have had to remember about.)
The New Haven had three types of big passenger diesel: the Dl-109, the PA, and the F-M CPA-24. These units were often used in multiple: I think up to three units on the heaviest passenger trains, but since the new Haven thought of at least some as dual-service types, perhaps more on Maybrook freights. Were lashups always of one model, or were units of different types sometimes m.u.-ed?
(I know that inter-model m.u. was common with later roadswitcher types: I think I have seen a photo of a 1200, a 1400 and a 1600 on the same train, and mixtures of 2500 and 2550 were common. With the earlier 0700 units, the three types had very different electrical gear: I would bet they had different short-time ratings which an engineer of a mixed lash-up would have had to remember about.)