1983TS

Ah right, thanks for the help.

Ahh the sounds; that oddly sonorous gasp of air they made when coming to a stand. When I was very young my nan would go to Selfridges in Bond Street a few times a year and I'd accompany her. Met to Finchley Road, thence Jubilee. The A stock was still unrefurbished then, and Finchley Road had those big pale yellow destination boxes.

Single leaf doors can be made to work, i.e. on the D Stock, and the brand new Hitachi Highspeed One Trains on Southeastern's newly opened Highspeed line.

The single leaf doors caused more problems that they were worth. The Jubilee needed something similar to what they have now, and the problems have now (almost) been ironed out.

The original project with those single leaf doors cost millions, and was presumably made by someone with absolutely no idea - Every company employs one, straight out of uni, never actually worked at shop floor level, yet gets paid vast fortunes to create ideas that the masses can only laugh at, and then do have the last laugh when management take it all in in the first place...

Still, they got it right in the end. Trial and error and all that

I'm not sure. The extension was almost certainaly going to go ahead, but they may well have been in service today. They may have refurbished them and rebuilt the sides to include two sets of double doors.

The problem with the car body was the three windows in the centre. To achieve two pairs of doors in the middle there would only have been one window in the middle bay remaining.

The interior would look very much like the 73ts as they were based on the trial 83ts mock up. They would look quite smart I think.

I'd love to see what a 83ts would look like in corporate livery....

Purely working from memory here I think, looking at the front, mk2s have wider vents above the destination blind.

The vents were changed part way through batch 1. Some of the earlier units were modified, and only 3607 and 3609 - 3612 then had the original design.

Working from my 1993 edition of "LU Rolling stock" (it really is time I bought a new one) -
Units 3601-6/8 as built had one continuous grab rail from floor to ceiling, across the doorway and down the other side but were modified with separate grab rails before entering service (supposedly this was to increase body stiffening, as too much faith had been placed in the smaller door apertures to provide this.
As built, 3601-12 also had more ventilation openings over the destination blind than the rest of the fleet, but those returned for strengthening had the vents modified in line with the rest at the same time, so only 3607,9-12 ran in service with the original arrangement.
The differences between the first batch (3601-30) and the second (3631-63) are:

LU roundel: batch 1 solid red, batch 2 red/blue

car numbers: batch 1 red, batch 2 blue

interior lights: batch 1 had luminators - see image 2, batch 2 had exposed fluorescent tubes - see image 1, which I assume is an interior shot of the LTM's 3734.

OPO: batch 1: retro-fitted in 1986/87, batch 2 fitted as new (although 3636-8,3640, 3641 entered service before the changeover date in March 1988)

trailers 4626-4635 (five from each batch) were de-icing cars

Another problem with the 83TS was their stiffness in coping with track defects. Stiff bogies meant track defect thresholds had to be lowered resulting in more temporary speed restrictions and increased track maintainence.

D Stock was similarly stiff but eventually had new, more flexible bogies fitted. With all the additional problems that the 83TS needed to overcome, they were scrapped.

Maybe, I'm not an expert on bogie design. My experience is with track geometry standards.

Yes, it would have been tough. Really, the designers of the 83ts should have copied the 73ts on body sides but with the corner posts that caused the horrid flat fronts of the 83ts.

I'm surprised the 83ts was formed from M-T-M+M-T-M. Most new stock at the time was starting to include UNDM including the recent 72ts, 73ts and D78 stock. I wonder why middle cabs were built?
Could it be that the first batch was only small - 30 units (15 trains) that flexibility was required as the stock operated with 1972mk2 stock?

Im sure the 83ts cant run without both units anyway?

Where the hell did I get that info from then!!!

It has been posted on this forum several times that a 3-car 83TS unit couldn't run on it's own as they only had one compressor:

www.districtdavesforum.co.uk/index.cgi?action=display&board=jubilee&thread=10262&page=1#192310

www.districtdavesforum.co.uk/index.cgi?action=display&board=jubilee&thread=11050&page=2#203036