4mm Brassmasters Black 5, 45232

Discussion in 'Area 51' started by Dave Holt, 30 August 2019.

  1. Dave Holt

    Dave Holt Western Thunderer

    Ah, appearances can be deceptive! The radius rods are currently free to move up and down in the curved slots inside the expansion links - they've just ended up in full forward by gravity. I do intend to model them in forward gear, but as near mid gear as the geometry will allow.
    The reason for the bushes - actually spacing washers soldered to the outer faces, is to give more bearing area than the half etched thickness of the links. As intended in the kit, the spacing washers should be soldered inside the support bracket and the expansion links should have valve gear rivets soldered to the outsides. Assembly then requires the support bracket sides to be "sprung" apart to get the rivets between the sides and located in the spacer washers. I'm just using a fixed pivot of 0.9 mm brass wire - hence the need to increase the expansion link bearing surface. The washers will also help locate the links sideways, as you say.
    The main drawback of my modification is that the valvegear will not be able to be reversed, although I'm not sure this is much of a loss.
    I've also wondered about the forward/back combination but, like you, never actually done it and always model my locos in a fairly short cut off, forward position.
    Dave.
     
  2. Dave Holt

    Dave Holt Western Thunderer

    Hurrah! The valve gear is complete and fitted on both sides. Not that it didn't put up a bit of a fight but I've beaten it into submission (for now).
    Despite the usual precautions of cigarette paper washers, dabs of oil, etc., I still managed to solder on of the expansion links solid in it's frame and wreck one of the union links. The expansion link required removal, cleaning up, re-fixing the spacer washers (one has ended up being loose in the reassembly) before re-assembly. Fortunately, I had success second time round.
    The union link soldered up solid to the drop link, despite a layer of oiled cigarette paper. Unfortunately, getting the pin out resulted in the link de-laminating and I eventually snapped one of the eyes off one end of one layer whilst trying to remove the remaining bits of pin. As one of the links was already made up from some spare etches I found, after an earlier disaster, there was no replacement part available. As a result, that link is now only the outer layer and no forked joints. I've used brass lace makers pins inserted from the back during the second attempt at assembly. I don't think this arrangement is too obvious on the assembled gear but, obviously, that union link is now rather delicate. I hope it doesn't give trouble in service, otherwise it'll have to be an appeal to see if anyone has some spare etches for the short, forked type links.
    Here's the assemble gear mounted to the chassis.
    BM_Blk5_45284_042.JPG

    BM_Blk5_45284_041.JPG
    And as far as it's progressed to date.
    BM_Blk5_45284_043.JPG

    On with the cosmetic stuff now.

    Dave.
     
    Last edited: 24 January 2020
  3. Dave Holt

    Dave Holt Western Thunderer

    The past few days have seen progress with fitting the external sand boxes and sand pipes to the rear of the centre driving wheels, including support brackets for the sand pipes.
    The piping under the cab and running plate on the fireman's side and the damper operating gear have also been completed.
    The piping presents a problem in deciding where to make the split between the parts under the cab, which are fixed to the chassis and the parts under the running plate, which are part of the body. Of course, the real thing doesn't have this issue. Furthermore, real piping is split into handleable sections joined by bolted flanges or union fittings. We don't have that facility (or at least I don't).
    First, as side view. I notice that the sand pipes just fitted end higher off the rails than the previous ones. I hadn't realised till I looked at the photo. They have been adjusted to match, now.
    BM_Blk5_45284_044.JPG
    And a couple of closer shots (with the loco up-side-down).
    BM_Blk5_45284_045.JPG

    BM_Blk5_45284_046.JPG

    The driver's side beckons, but the piping will have to wait till the rear steps are fitted and the live steam injector. Unfortunately, the W/M casting provided in the kit, whist being a good representation of the type fitted by the LMS, it is the wrong hand, so a home made effort in brass is called for. I made one for my Caprotti Black 5 (for the same reason) and found it not too difficult. Still, an unwelcome bit of extra work.

    Dave.
     
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  4. AdeMoore

    AdeMoore Western Thunderer

    Excellent stuff.
     
  5. Dave Holt

    Dave Holt Western Thunderer

    The live steam injector has been created from various diameters of brass tube and wire and some 16 BA washers. Amazingly, I managed to assemble the whole thing with high melt flux cored solder without any bits moving or falling off. The injector was than mounted on the back of the etched footstep assembly and fixed to the loco chassis. Stays back to the frames and some further pipework are required to finish this part of the model.
    Injector body with overflow and steam pipes.
    BM_Blk5_45284_047.JPG

    Attached to the footsteps.
    BM_Blk5_45284_048.JPG

    BM_Blk5_45284_049.JPG

    After fitting the steps to the chassis. The other end of the steam supply pipe is soldered to the underside of a frame stretcher.
    BM_Blk5_45284_050.JPG

    The two remaining connections are for the water feed (upper flange but nearer bottom of photo) and the delivery pipe.

    Dave.
     
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  6. ullypug

    ullypug Western Thunderer

    Blimey. Not much clearance in there. Top notch stuff.
     
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  7. Dave Holt

    Dave Holt Western Thunderer

    The remaining pipework has been added to the live steam injector and a start made on the vacuum train pipe under the driver's side running plate and cab. Although guided by the pipe and rod diagram for the full size loco, I find that bending brass wire in three planes is a process of trial and error until an acceptable geometry is achieved. Again, part of the piping is attached to the chassis and part to the body.
    BM_Blk5_45284_051.JPG

    BM_Blk5_45284_052.JPG

    I notice that at some stage, due presumably to rough handling, I've managed to break off the overflow connection from the W/M cast exhaust injector. Another bit of additional work required.

    Dave.
     
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  8. Dave Holt

    Dave Holt Western Thunderer

    Vacuum pipe now completed. Another squiggly bit of 0.8 mm brass wire, plus a few other bits and bobs.
    BM_Blk5_45284_053.JPG

    BM_Blk5_45284_054.JPG

    Dave.
     
  9. Dave Holt

    Dave Holt Western Thunderer

    Well, I've now completed as much of the under cab pipework as I intend to do. There are a couple of small bore pipes I haven't done - steam brake supply to the tender and, possibly, the tender coal spray, but there's enough to create the impression of several hose connections to fill the gap between loco and tender.
    Here's the final arrangement in rather cruel enlargement.
    BM_Blk5_45284_055.JPG BM_Blk5_45284_056.JPG BM_Blk5_45284_057.JPG

    Dave.
     
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  10. Len Cattley

    Len Cattley Western Thunderer

    Lovely work there Dave.
     
  11. bogusman

    bogusman Western Thunderer

    Very nice Dave. That exhaust injector looks a beast!
     
  12. Dave Holt

    Dave Holt Western Thunderer

    The exhaust injector is the Brassmasters white metal casting. They also do these in lost wax brass, but not in the kit.
    Dave.
     
  13. P A D

    P A D Western Thunderer

    Fantastic piece of work Dave!

    How you manage to get so much detail in such as small space is incredible. Love the traps in the pipework.
    Cheers,
    Peter
     
  14. Dave Holt

    Dave Holt Western Thunderer

    Thanks for the kind comments. Yes, it is all a bit tight and managing to wiggle serpentine lengths of wire into place can be a challenge and requires some planning of the sequence of assembly. Doesn't always work out, though.

    So much for my resolve not to add any more under-cab piping! It didn't take long to realize I couldn't leave off the steam brake supply for the tender. It's fairly small bore stuff (0.4 mm on the model) but exits the back of the loco at a much lower level than all the other pipes/hoses, so has a somewhat different profile in the gap between loco and tender.
    It is visible in the photo, close to the brake crank support brackets and is fixed to one by a small bracket.
    BM_Blk5_45284_058.JPG

    That's actually not the last pipework needed on the chassis as part of the train heat pipe is visible outside the frames where it passes from below the front buffer beam up through the triangular brackets behind the buffer an the fireman's side.
    The chassis is now very nearly complete but I am going to have to remake the pick-ups for the front drivers as the position where the current (!) ones pass over the top of the frames exactly coincides with the front sand box filler pipes. Humph.

    Dave.