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Yeoman SW1001 project


The Fatadder

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The start of what is likely to be a very slow build....

While tidying up under the layout last night I came across a very old project respraying what I think was an Athern SW1000 in HO into Foster Yeoman livery as 44 Western Yeoman II that I had completed way back in 2000/2001, a year or so later it was fitted with a DCC decoder which most annoyingly has been lost at some point.   The loco was "finished" with the exception of adding the wasp stripes to the ends, and the buffers (which were to be fitted after finishing the wasp stripes).  But not a lot of the differences between an SW1000 and SW1000 were modelled.  (That said I am impressed with the quality of spraying from 16 year old me, given it was done with one of those pseudo airbrush / aerosol can hybrid things as opposed to a real airbrush.  If i remember rightly it also resulted in a fair amount of blue paint sprayed over the kitchen table!)

 

 I would like to get it finished to a degree, I am planning a large display case for the study in which to put some of the various bits of stock that I want to keep but are of no use to my layouts.  The SW1001 will look good along with my finished PTA. 

 

There are a number of differences, some of which I will tackle while others will be ignored as they are too involved.   If I was building a model of Merehead it would be worth going to a further level of detail (there are accurate SW1001 shells available on Shapeways for example (but its over £100), or a hybrid of a SW1200 and SW1000 with a new cab.  A true 4mm scale model which really conveys the size of the thing would be very impressive.

 

Headstock: This will need to be filed back flush and started again.  there is a large hole for the buckeye which needs filling and fitting with a coupling hook/droped buckeye.  a protruding section at the top needs to be removed, and the headstock as a hole needs extending about 2mm above the walkway.   (This last bit may have to be ignored as another error may be making this look wrong despite being the right size).  Trial and error will determine if adding the extension looks right.

Footplate: The SW1001 has a lower footplate than an SW1000.  Without buying an SW1200 to strip for parts there is not a lot that I can do about this, but with the scale difference it may be working in my favour raising the height to be more comparable with OO stock.  

Bogies: these are a completely different design. (again the SW1200 part apparently is right, but I cant find any in the UK at a reasonable price).  If I can find the missing two SW1000 parts one option is to remove the brake actuators, and add the lower bar from plasticard to get a representation.  The other option is to draw them up and do a 3d print.   I have managed to find a GA drawing of the SW1001 with plenty of dimensions on it which will help.

Fuel tank: The SW1000 has a long air tank and a large fuel tank.  the 1001 has a short fat air tank and a much smaller fuel tank.  The model's tank is a cast lump and forms part of the motor mount, I am going to look to see if I can cut it back without damaging the motor, else its something I will have to live with.  the air tank can be shortened, but it hides the body / chassis retention clips, so care would be needed to replace those

Bodyside (front): at the nose end there is a anguluar bulge below the filler cover, looks a simple job to add with plasticard.

Bodyside (near cab): The 4th door on the model is fitted with vents where as the prototype has a fush door.  There is a risk of damage to the surrounding hinges etc, but it should be ok to cut/file this off.  In addition I think the other two vent doors are on the wrong doors (I could do some cutting and splicing to rearrange doors, but I will just live with this).

Bonnet Top: The bell is located slightly too far backwards, the second (rear) exhaust needs removing, and a large silencer box needs to be added around the forward exhaust.  

Bonnet Radiator Grill: Grill is approx 10mm too long and will need either filling or a section cutting out and replacing. the rest of the grill needs a raised cover adding (brass)

Bonnet top: (near cab): There is an angle downwards from the bonnet top to the cab, it should be 1 door with but on the model it is 2 doors.  Im in two minds on this one as to whether to build up the side with pasticard to correct.

Rear: The headstock has the same issues as the front, in addition the step up between the end and the cab is very different.  It should be a simple case of cutting out and rebuilding with plasticard (Assuming the chassis isnt in the way.)

Nose: The light unit should only have the centre two lights, so the other 4 needs to be removed and filled.  (the same is true on the rear of the cab)

Cab: this is the biggest difference and the hardest to resolve.  The SW1000 has a fairly flat roof profile, where as the 1001 has a much rounder roof.  The windows are lower by about 4mm on the sides and also has lower outer windows on the rear.  There was a detail part by Cannon for an SW1001 cab which would fit onto the Athern SW1000, but as far as I can tell its discontinued (and would be costly to ship to the UK).  So the alternatives are live with it, design a 3d printed new cab, or draw up new sides / ends / roof and cut with the silhouette.

Handrails: Finally there are a few missing handrails, no doubt these are in a bits box somewhere.  But some are no doubt different to the model, non working lights will need to be fitted to these at the ends 

 

 

Lots of work, and it will be a slow process, whether or not I get the cab / bogies printed they will be a good exercise in relearning 3d CAD.

  

 

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Edited by The Fatadder

  • Like 3
  • Craftsmanship/clever 1

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