Schnellzug
Established Member
I do not know whether or not it was their "un-British" outline with a central cab or just their total pathetic reliability in the mid 1960's, but both the class 14 and the class 17 diesel locomotives were the worst post-steam traction that I can remember. I think that the class 14 had a top speed of only 40mph. I am not sure but I think that an example of both classes made it to the preservation stage.
If If had to pick a type of diesel locomotive which would, when compared to other diesel locomotives, be the "class 142 Pacer" equivalent of DMU, I would nominate both the class 14 and the class 17 as joint contenders for that title.
The class 14s were designed for shunting and light freight haualge, the last locos built at Swindon in fact; I don't think there was much wrong with their reliability per se, they certaintly seemed to find plenty of new owners in industry (and that's why a lot survived into preservation). I think the main shortcoming with them was that BR were building them with one hand just as they were withdrawing the kind of traffic they were designed for with the other.
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* As an aside to that, (and this may be moving away from 'least popular' to 'least succesful'); they both had Paxman engines, the 14 a V6 and the 17 2 x horizontal 6, and it does rather look as if, if the Valenta hadn't been chosen for the HST, Paxman's reputation would be rather different now; if you think that they were used in class 14, 15, 17, to re-engine class 21s (and, it seems, was hardly much of an improvement), and the class 74s, all of which make a 180 look like a Desiro in terms of reliability, Paxman might rather have been consigned to the bargain bin of history, don't people think?