7mm On Heather's Workbench - raising the Standard

Dog Star

Western Thunderer
In answer to Graham's question - the main steam pipe sat a variable 5 - 7" below the top of the solebar e.g. about level with the bottom of the solebar and sloping down to the centre...
Golly gosh Bob, that is a question from out of the arc! Thank you for the explanantion as I shall know now what else I ought to snapograph in the near future.

So when the main steam pipe was increased to 2" bore (2.5" OD maybe? or 3" lagged?) all future Mk.1s were given a steam heat drain... placed roughly in the (longitudinal) middle of the run? at the lowest point of the run?

regards, Graham
 

Bob Reid

Western Thunderer
Apart from the more obvious steam separator Graham - the thing I've always felt was ignored was where the main steam heat pipe appears out for about 4' near the solebar and just above the bogie and disappears back in just before the back of the headstock - when it's lagged it's got to be around 4" thick (the 2" bore pipe used has an O.D. of 2-3/8") It's about the only point it's really visible - especially when it's lagged - have a look.

Regards,
 

Dog Star

Western Thunderer
...goodness knows what it is...
The JLTRT list of Mk.1 bits identifies the part in Heather's photos as "item 130080, steam heat pressure relief valve" which kind of raise a question.

Some of the Mk.1 carriages at Winchcombe have a similar fitting at the headstock, see here:-
mk1 steam heat.jpg

That looks suspiciously like a steam pressure shut-off cock and with a steam heat pressure relief valve at the end of the bag.

Over to Bob for chapter and verse.

regards, Graham
 

Bob Reid

Western Thunderer
I think they'd need to be going to specsavers Graham if it's meant to be anything like that. The one Heather has looks like a valve body of some sort with the handle on top and mounted in some kind of bracket..... I'll dig mine out and see what I got with it...

regards,
 

Dog Star

Western Thunderer
Golly gosh Bob, that is a question from out of the arc! Thank you for the explanantion as I shall know now what else I ought to snapograph in the near future.
A quick trip in the Time and Relative Distance in Space hologram and here we are:-

The first snapograph (great name, thanks Heather) is of a vac brake / steam heat carriage. Bob - please feel free to annotate this image with captions.
Mk.1-steam-heat-drain-1.jpg

The next two pikkies are of a different carriage - I think that this one is a dual brake dual heat vehicle.
Mk.1-steam-heat-drain-2.jpg

Mk.1-steam-heat-drain-3.jpg

The item in the first photo seems to have an insulating cover and that cover is missing in the second / third photos.

regards, Graham
 

Bob Reid

Western Thunderer
They are all of the same thing as the photo I linked to Graham - the Steam Separator in the main steam heat pipe.... As you say, the second two have lost the insulation & cover. Not much to annotate in the photo's that you don't know about - spotting of course in the centre photo the ETH distribution fuse box in the foreground and the air brake pipes running along left to right (an vice versa of course)! above the bottom longitudinal.....
 

Dog Star

Western Thunderer
Bob,
I was hoping that you might point out the connection from the steam separator to the auxiliary steam heat pipe... I think I can see one in the first photo, not sure about the other two.

regards, Graham
 

Heather Kay

Western Thunderer
After not being able to get a lot done on the workbench yesterday, having to ferry a friend about to and from hospital and spending some time with another friend for a photographic wander to get some autumn leaves before the forecast storms blow them all away, I made sure to spend as much time at the bench today as I could.

Laurie had sent replacement frets of the BSK interior parts, which are the right size now. I thought it would be a good idea to get a coat of base colour on them before I got stuck into the TSO underframe again. I don't know if you're familiar with the enamel paint range that used to be available from J Perkins. I had acquired some tinlets a while ago, and found one was almost exactly the same colour I had mixed earlier in this thread. For the record, it is 62 Matt Leather (Perkins match the Humbrol colour number scheme, which is handy).

Anyway, I slapped some paint all over the panels, thinking they would be dry enough to recoat in an hour or two. It turns out the Perkins paint needs five hours before it can be recoated. Five. Hours. So that's not getting a recoat and being completed today then.

I turned to the underframe. Things had been left with the electrical undergubbins and cross trusses in place, and paint all over everything. What I managed to finish today is the longitudinal truss members, the vacuum brake equipment and the dynamo fitted.

I thought it might be worth comparing the etched underframe against the cast and etched version.

IMG_6977.jpg

Allowing for the millimetre slippage, from the frame to the centre of the dynamo on the BSK with the etched truss measures about 11mm.

IMG_6976.jpg

On the cast/etched TSO, the same measurement is 9mm.

Not quite sure what that's telling anyone, and it's not really that obvious when the underframes are up the right way.

Anyway, both coach underparts are now at more or less the same point. I need to upgrade the bogies for the TSO - looking forward to that </sarcasm>. I was considering the handbrake linkage to the guard's compartment on the BSK, but I doubt you'd actually make it out under the coach in normal circumstances.

IMG_6980.jpg

The upper works can now commence in some earnest, once those dastardly bogies are out of the way at least.
 

Dog Star

Western Thunderer
I need to upgrade the bogies for the TSO - looking forward to that </sarcasm>...

[pedant on] sarcasm on/off syntax error Heather [pedant off]

Just a thought... how about building a Mk.1 to reflect the collective knowledge of WTers within your topics and then asking two questions:-

* what was the base kit?
* what has been done?

You know, just for fun...
 

Heather Kay

Western Thunderer
Funnily enough, Graham, there is another Mk1 in the pipeline. I may attempt to embody collective knowledge in that build.

:thumbs:
 

Steph Dale

Western Thunderer
[pedant on] sarcasm on/off syntax error Heather [pedant off]

Just a thought... how about building a Mk.1 to reflect the collective knowledge of WTers within your topics and then asking two questions:-

* what was the base kit?
* what has been done?

You know, just for fun...


I suspect that for many the answer is:
MMP
Assemble as per instructions

Steph
 

Bob Reid

Western Thunderer
The challenge then surely should be improving on the RMB that's waiting in the wings then!

(If anyone would love to have two HJ Mk1's in B&G in exchange for a MMP RMB, I'll happily take up the challenge) :)

Regards
 

Bob Reid

Western Thunderer
Bob,
I was hoping that you might point out the connection from the steam separator to the auxiliary steam heat pipe... I think I can see one in the first photo, not sure about the other two.

regards, Graham

I'm not sure you can see the connection in any of the photo's Graham! The connection is on the rear i.e. pointing towards the opposite side of the top longitudinals - somewhat out of sight. What you can see however, is a lagged 1/2" o.d. branch pipe tapped off of the Auxiliary Steam pipe coming back past the steam separator and across to a heater feed....

Pictures of the Auxiliary Steam pipe - and the rear of the steam separator seem quite rare - probably because it was tucked up so high into the frame - apart from where the main steam pipe pops out to get around the bogies both pipes sat in between the two top longitudinals as can be seen here;

http://www.flickr.com/photos/transrail/8438271412/

With the main steam pipe on the right and the auxiliary steam pipe on the left.

regards
 
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