Martin Shaw
Western Thunderer
It's obviously a vacuum fitted engine, they all were by this date, the ejector exhaust pipe is plainly visible along the boiler so the lack of a front connection is most odd. I think Col's suggestion is likely, a high mileage engine with banging axleboxes which the J39s were noted for shouldn't be used at any speed, passenger trains, and to enforce this the automatic brake was effectively removed whilst allowing the mileage to increase to meet the shopping criteria. I don't think any more useful info can be extracted from this picture.
Whether J39s were regularly used between Witham and Bishops Stortford is a moot question, the small amount of evidence I have suggests not, much more apparent are J17/19/20s which you would expect, the bigger locos being used for longer distance work. If the J39 was under some sort of restriction then its appearance at Braintree is more explainable.
I was aware of the shed bash website, most useful it is too.
Regards
Martin
Whether J39s were regularly used between Witham and Bishops Stortford is a moot question, the small amount of evidence I have suggests not, much more apparent are J17/19/20s which you would expect, the bigger locos being used for longer distance work. If the J39 was under some sort of restriction then its appearance at Braintree is more explainable.
I was aware of the shed bash website, most useful it is too.
Regards
Martin