Mk1 Resources And Parts

Bob Reid

Western Thunderer
Graham,

I'm sure I can knock up a representative arrangement drawing for the air/vac connection to the cylinder/s....

As far as the redundant bracket - it's been as you suggested the location of the original brake shaft / vee hanger from it's vacuum only days - I'm wondering if this is one that's been converted from the original uncompensated/equalised arrangement to allow the fitment of compensated/equalised CW or B4/5 bogies - more digging in the drawings needed!

Bob

Thanks Bob for the annotation to my photos and for the explanatory text. I knew nothing of slack adjusters on Mk.1s so I have learnt something on that one. Given that the SAB was fitted to late build Mk.1s then I shall guess that the supported pin-joint in one of the photos is an original fitting. To round off the story the thread needs a photo which shows how the air-brake and vacuum brake linkages were combined before attachment to the bogie brake pull-rod. Time for a visit to another preservation site.

If there is anything to be discussed from the photos of yesterday, then it is the question about the support bracket on the right hand side of this photo:-

View attachment 16307

What has been removed from the RHS? What is hanging further back from that bracket? The bracket looks like it is attached to the near truss hence is not a support for the vacuum cylinder, I think that the piston rod from the vac cylinder is visible behind and to the left of the bracket, attached to a lever on the brake cross-shaft closer to the centre of the photo.

regards, Graham
 

Dog Star

Western Thunderer
... under BRs ownership symmetrical Vee hangers were used on the early BR bogied Mk1's (which had unequalised brakegear). Asymmetrical Vee hangers were used - from around 1954 - on Mk1s with BR bogies that were fitted with equalised brakegear. The Commonwealth and B4/B5 equipped vehicles had equalised brakegear from new and therefore had asymmetrical hangers. Unfortuantely preservation vehicles are the worst to use as examples - so much inevitably having been changed - especially when it comes to bogies unless you know it's history. If you can find any photo's in BR days of anything other than the above arrgtss - let me know!

You did ask... and I did not realise the (possible) significance of the "hole" when I took the photo :rolleyes: . From what I remember of the carriages which I photographed, there is a good chance that the carriage with the "redundant / extra" shaft bracket was in blue/grey livery and so unlikely to have been modified by the preservationists (the house-colours being other than blue/grey).

As far as the redundant bracket - it's been as you suggested the location of the original brake shaft / vee hanger from it's vacuum only days - I'm wondering if this is one that's been converted from the original uncompensated/equalised arrangement to allow the fitment of compensated/equalised CW or B4/5 bogies - more digging in the drawings needed!

If I can get to Winchcombe again soon I shall investigate the origins of the particular carriage...and photograph the other side of the underframe. What might you want to know / see?

regards, Graham
 

Bob Reid

Western Thunderer
If I can get to Winchcombe again soon I shall investigate the origins of the particular carriage...and photograph the other side of the underframe. What might you want to know / see?

regards, Graham

Just photographs from the other side Graham - searching through the drawings I'm seeing much of what you've already photographed however I'd be interested to see which particular vee hanger has been used in that arrangement... Don't go out your way to do it specifically though just the next time you are there for something else.

Bob.
 

Dog Star

Western Thunderer
Just photographs from the other side Graham - searching through the drawings I'm seeing much of what you've already photographed however I'd be interested to see which particular vee hanger has been used in that arrangement... Don't go out your way to do it specifically though just the next time you are there for something else.
Winchcombe is 90 miles away so I shall have to go out of my way to see that particular carriage again. We shall see.

On t'other hand, I know some of the C&W gang at Arlesford, just 15 miles from here, so I shall ask for a permit to go phot-ing off season, that is when there is nothing running.

In the mean-time... any ideas as to the width / depth of the vertical metal strip alongside door openings?

regards, Graham
 

Bob Reid

Western Thunderer
No, don't worry Graham, I can draw up those I've got details of so far as I'm sure the reason will turn up when I've looked closer at the related vee-hanger / brake cylinder suspension bracket dimensions....

As far as the anti-corrosion moulding, it's 0.95mm wide by 0.073mm thick in 7mm scale....

(edit) For Mk1s & Mk2s!

Bob
 

Dog Star

Western Thunderer
As far as the anti-corrosion strip, it's 0.95mm wide by 0.073mm thick in 7mm scale....
That is 38 thou x 3 thou in old money... I think that I shall use 5 thou sheet and cut 40 thou strips, with the merest whiff of solvent to stop the stuff morphing into a slub.

Thanks Bob.

regards, Graham
 

Dog Star

Western Thunderer
Way back when... sometime in the depth of winter... Bob offered a challenge, in post no.#132 , something along the lines of "if you can find anything different to etc., etc.." . I spotted something last week which might just be an answer to Bob's prompt.

Parked out back at the NRM last week was a Mk.1 BG, painted in mock LNWR livery and named "Valiant"... no number visible. What was surprising about this carriage was that the underframe was carried on Commonwealth bogies whilst the vacuum cylinder was supported in symmetric V-hangers with the brake pull rod going under rather than over, the bogie headstock / axles. This arrangement of brake gear is not meant to happen... and I cannot work out how the brake pull rod connects to the equalising fulcrums of the Commonwealth bogie.

So, if you go to the NRM and see this carriage, please aim your camera at the brake rods / levers... anything which can help to work out how this carriage stops!
 
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40126

Western Thunderer
Way back when... sometime in the depth of winter... Bob offered a challenge, in post no.#132 , something along the lines of "if you can find anything different to etc., etc.." . I spotted something last week which might just be an answer to Bob's prompt.

Parked out back at the NRM last week was a Mk.1 BG, painted in mock LNWR livery and named "Valiant"... no number visible. What was surprising about this carriage was that the underframe was carried on Commonwealth bogies whilst the vacuum cylinder was supported in symmetric V-hangers with the brake pull rod going under rather than over, the bogie headstock / axles. This arrangement of brake gear is not meant to happen... and I cannot work out how the brake pull rod connects to the equalising fulcrums of the Commonwealth bogie.

So, if you go to the NRM and see this carriage, please aim your camera at the brake rods / levers... anything which can help to work out how this carriage stops!

regards, Prof Barking Mad (just back from his hols up't north).


No photo's Doggers ??. You should know better. Straight to the headmasters office & sit outside the door :rant:

Steve :cool:
 

Dog Star

Western Thunderer
No photo's Doggers ??. You should know better. Straight to the headmasters office & sit outside the door
Good idea, I shall turn up just before the tea trolley arrives - Earl Grey and Tiffin for Headmaster S. James.

Actually, camera went duff that morning. I had been photographing the only remaining original LNER 8-wheel tender with water scoop in place and that took a lot out of the battery. As well as that tender, I had been taking photos of the D167 Buffet to see if I could get the interior arrangement for Peter's model... and trying (and failing) to work out how the three dynamos were fitted to the underframe.

regards, Graham
 

Bob Reid

Western Thunderer
I wouldn't hold your breath just yet Graham - the odds are still against you :)

Whatever happened in the post BR / private / preservation era doesn't count!
 

Dog Star

Western Thunderer
I wouldn't hold your breath just yet Graham - the odds are still against you :)

Whatever happened in the post BR / private / preservation era doesn't count!
That is not fair :( .

I shall appeal to the FS - after all, the key question remains... how does the pull rod from the brake cross-shaft connect with the equalising fulcrums of the Commonwealth bogie. Of course a supplementary question could be:- where is the self-adjusting link? or even:- dual braked? Or do I just post the question on the BRCS Yahoo Group :thumbs: ?

Maybe I ought to stop this "Bazzing" around - probably giving Dikitriki a head ache.
 
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Bob Reid

Western Thunderer
Fair enough Steph, but its like bolting a Ferrari engine into your Ford Pop....

The Mk1 catering vehicle was an experimental one off, not the run of the mill conversion exactly

Bob.
 

Railwaymaniac

Western Thunderer
More on Mk1 underframes, please guys . . .

I've been searching the internet for information about Mk1 underframes, and I've seen pix showing that the dynamo was fitted CORRIDOR SIDE on Mk1 corridor coaches (for example, HERE on a BSK. This *is* showing the corridor side, yes?).

So - your starter for 10 is:- Is the dynamo ALWAYS fitted corridor side on a MK1 corridor coach? And if not, what is the rule about it, please???? :confused:

TIA

Ian
 

Heather Kay

Western Thunderer
So - your starter for 10 is:- Is the dynamo ALWAYS fitted corridor side on a MK1 corridor coach? And if not, what is the rule about it, please???? :confused:

Not so much a rule as a standard underframe layout. The dynamo is generally always fitted in the same place whatever the body.

*Waits for Mr Beare to chip in* ;)
 

Bob Reid

Western Thunderer
Same position relative to the corridor on all of the side-corridor Mk1's - TK/SK, CK, FK, BTK/BSK, BCK, BFK....*

* waits quietly whilst Graham finds the exception
 
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