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Dapol Austerity - smokebox door and handrails.


halfwit

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The smokebox door, like the rest of the loco, needs a bit of work.

The first job was to carve away the numberplate, not really needed on an industrial loco..., and the moulded dart. The moulded hinge is huge and ugly so that came off as well, leaving a couple of small pads to mount a length of .025" Evergreen rod on, and for some reason there are rivets on the hinge straps which the prototype lacked so they came off as well.

The front handrail is set too high so I filled the moulded holes and fitted a new handrail set at a scale 5' from the footplate;

 

blogentry-6749-0-26766700-1366997568_thumb.jpg

 

The side handrails are also too high and were also replaced. This was a bit of a headache as of course the holes in the tank sides will be lower than for the front due to the fact that the stanchions sit at an angle. After much trial and error (drill, fill, re-drill...) I've got them about right, although one stanchion is slightly out of place (I'm not saying which one though!). The moral - sort out the side handrails first and fit the front to suit!

 

blogentry-6749-0-15163100-1366997586_thumb.jpg

 

 

Note the filled holes marking the old handrail positions.

Also seen in the photo above is a replacement tank step, included on the RT Models etch. The moulded step is far too high, it should sit slightly above the boiler centre line. The step is only temporarily in place for the photo, I'll fit it later on as its rather vulnerable. It has a tail which is fitted into a .5mm drilled hole.

Gibson short stanchions are used, medium are far too long for this job, and .45mm wire. I also replaced the two short handrails below the filler, again with .45mm wire.

 

I've been using a 7mm scale drawing whilst checking and setting the handrail heights etc. To save lots of complicated maths I use a 7mm/foot scale rule on the drawing then transfer the measurement to the model using a 4mm/foot scale rule.

 

On putting the model back together to see how it looks I've spotted a problem;

 

blogentry-6749-0-98565600-1366997599_thumb.jpg

 

The handrail should line up with the middle of the curve of the spectacle plate, not the bottom as mine does, which means that I've fitted the spectacle plate too high. I glued it in place as low as I could whilst covering the existing opening.

I now have three options;

1. Ignore it and carry on,

2. Remove the spectacle plates, fill the top part of the hole with plasticard and filler, re-fit the plates at the correct height and file away the excess,

3. Put the model away for a few months and do something else until I decide which course of action is best.

However, before I make any decision I intend adding some extra detail to the firebox backplate.

 

Some minor detail differences to be aware of if modelling a particular loco:

A few locos had the tankside handrails set slightly higher up. I've noticed this on locos built by Andrew Barclay.

Two types of stanchion are used, the normal turned type and the straight shoulderless type.

Two diameters of smokebox door hinge.

 

Paul.

  • Like 13

6 Comments


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  • RMweb Gold

Odd, though, because the original handrail alignment seemed (in a previous blog) to be in exactly the right place, relative to the curve of the spectacle plate...?

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  • RMweb Gold

Evening Paul,

 

This is turning into something really special.  You're doing these unsung engines proud with this rebuild.

 

When my Hunslet/Austerity re-invigorated your interest in your project I never thought you were going to go this far. I'm glad you did.  

 

Totally agree with you regarding the smokebox door, Although I replaced the dart I wish I'd replaced the door hinge on mine.

 

It's interesting what you say about the handrails too and the relationship with the cab windows. Again I'm glad you've pointed this out-though it'll be interesting to see how you address the problem you have indentified.

 

Sadly, my modified example came to grief last weekend whilst exhibiting it on Juniper Hill. It managed to fall from the ironing board causing some damage to it.  I've ordered some replacement buffer beams from RT Models today along with a few other bits,  Was tempted to go down the water filler/dome route but chickened out.

 

Look forwrds to the next installment.

 

Cheers,

 

Mark

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  • RMweb Gold

Hi Paul, there's something really pleasing about taking the time and care needed to do what you're doing here. It is very clearly worth it.

 

About the spectacle plates and handrail, would a fourth option be to return the handrail heights to the original position? I know it would be annoying after all the work getting them right, but I was just thinking it might be a less noitceable compromise? If not, then I suppose the "spectacles" have to come down in height. Easy for me to say! :-)

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Thanks for the comments and 'likes', as I've said before they're always appreciated.

 

CK - you're quite right, but then the spectacle plates and handrails were both too high, lowering the handrails to the correct height without moving the spectacle plates throws the relationship between the plates and handrails out. Perhaps I should have left well alone...

 

Mark - perhaps you should be looking for a cheap secondhand loco to have a play with! I hope yours wasn't too badly damaged. The same thing happened to me many years ago when my newly finished Nonneminstre Models Hibberd Planet crashed to the floor at an exhibition. The club payed for a replacement model, which was jolly decent of them, and Peter Smith (Mr Nonneminstre) gave me some replacement parts when he heard about the accident. So mine got rebuilt and the replacement sits patiently in the loft awaiting the day I finally get round to building it.

 

Mikkel - now that I've set the handrails to height I couldn't bear the thought of moving them again!

 

Paul.

  • Like 1
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I am following your improvements, as I have several that need work for my colliery layout.

I think the handrail issues start with the windows.

The heavy moulding results in a window that is too small, and a bit higher than the prototype.

If the handrails have been placed, based upon their relationship with the windows, then they will be too high.

The handrail is 2.5 mm away from the tank. That is a scale 7.5 inches!

As the tank is sloping, this results in the rail being too high.

The front rail has been set to match the side rail, resulting in it being a couple of mm too high.

I plan to open out the windows, replace the rails, with shorter fittings, and lower the front rail.

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BigD - note also that the outer side stanchions are set too far inwards, probably because the handrails as supplied have silly curved ends (a safety feature perhaps?, or to stop the rails coming out of the stanchions?). The inner pair are in the right place. Something to note if you're moving the rails down. They should sit 5' (20mm) above the footplate.

 

Today I've been carving most of the detail from the firebox backplate. Which I might yet live to regret...

 

Paul.

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