Dog Star
Western Thunderer
Given that you benefit from some of my more esoteric wanderings (factory in Stourport? A4s in bits) are you complaining?The trouble is that whenever Graham does any research, I realise how poor my own efforts are
Given that you benefit from some of my more esoteric wanderings (factory in Stourport? A4s in bits) are you complaining?The trouble is that whenever Graham does any research, I realise how poor my own efforts are
Given that you benefit from some of my more esoteric wanderings (factory in Stourport? A4s in bits)) are you complaining?
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
... 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!
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
Winchcombe is 90 miles away so I shall have to go out of my way to see that particular carriage again. We shall see.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.
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.As far as the anti-corrosion strip, it's 0.95mm wide by 0.073mm thick in 7mm scale....
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).
Good idea, I shall turn up just before the tea trolley arrives - Earl Grey and Tiffin for Headmaster S. James.No photo's Doggers ??. You should know better. Straight to the headmasters office & sit outside the door
That is not fair .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!
I've no idea (without doing a bit of digging) how they coupled that up - unless you want your brain box to hurt, though, I'd steer clear of this image http://www.flickr.com/photos/camperdown/6848077907/
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????