Tinsley Tenders

I have these photos that I took of the two tenders at Tinsley depot in the late '70s/early '80s.

http://www.flickr.com/photos/graham_williams/6236629217/in/photostream
http://www.flickr.com/photos/graham_williams/6234786787/in/photostream

Does anyone know:

a) Their origin?
b) What they were used for?
c) What happened to them?

 

Both look like ex-LNER group standard tenders - 3500 gallon ones?

EDIT: Reliably told by a friend in the know that the first one is a "stepped 4200 gallon LNER standard tender".

 

They are not both exactly the same. The top of the sides are different. So are they both B1s, or is the first one from another class?

 

They could have been used with one or more classes. They're group standard tenders - could have gone behind B1s, B2s, or whatever needed a tender on the Eastern region at that time!

 

The second picture tells the story,
they were used as salt bath resistance testing of generators,
passing the current from the generator through the saltbath simulates load and so enables static testing,
the load value of the tank was changed or sdjusted by altering the water level or the salinity of the water.

The Melter

 

It is a rather daft comment. A B1 is a class of engine, not tender. Tenders were built to standard designs, so the same design of tender would be used for many classes.

 

I'm sure 99% of us knew exactly what he meant. In fact you'd have to be daft not to.

 

Here's another one at Healey Mills in 1984. Looks like it's for the same job.

http://www.flickr.com/photos/graham_williams/6239811709/in/photostream

 

Whilst agreeing that the top image from the Tinsley views are from a B1 locomotive I am tempted to suggest that both the 2nd image and that from Healey Mills seem more likely to be from either a V2 or K1 locomotive given the different angle on the top of the tender.

 

So to ask a pertinent question are they still there ?
are they suitable to run behind anything that might need one in the future ie a B17 ?

 

There were two tenders (possibly the same two seen above?) in a scrap yard in Doncaster a few years ago. If they are still there, who knows if the prolonged exposure to the elements has made them suitable for anything.

 

Suspect that parts of these tenders, in particular wheelsets, are still running on the main line with 62005 (and perhaps 61264). I'm sure 62005 has used donor wheelsets from tenders that have survived long enough in various places. There doesn't seem to be that much to making a new tender, I suspect the wheelsets, axleboxes, hornblocks and buffers would be useful, most of the rest is just platework.

 

It wasn't there 2 weeks ago... First time ive not seen it.