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Smoke box darts. - or are they handles?


Silver Sidelines

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This is the final installment in a series of Posts about adding detail to a Hornby / Dapol County Class. After posting pictures of the Dapol locomotive body with its new lamp irons and replacement buffers I was directed by friend José in Argentina to ‘do something about’ the moulded smoke box handles.

 

Yes I know that there are turned brass items for purchase but I was born in Yorkshire and I still relish the challenge of saving some money!

 

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Ex GWR darts courtesy of FJ Roche

 

What should Smoke Box Handles look like? Well there are drawings which variously show two equal length handles around 12 inches long, or on some drawings the lowest handle closest to the smokebox is elongated to 15 inches. How have Bachmann and Hornby modelled these handles?

 

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Bachmann 43xx

 

The early Bachmann engines such as the 22xx continued the Airfix Dapol tradition and moulded the handles as a lump of plastic on the front of the smoke box door. Later Bachmann models such as the Halls, Manors and 43xx compromised with the bottom handle still moulded on the face of the door, but with the top handle as a separate item.

 

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Bachmann ROD Class

 

Most recently Bachmann on their ROD Class locomotives have correctly modelled the two handles separate from the smoke box door.

 

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Hornby 28xx

 

The latest Hornby handles on the 28xx Class look to me to be almost perfect. In contrast the handles fitted to the slightly earlier Hornby Grange locomotives are to my thinking far too delicate.

 

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Hornby Grange

 

What about my Dapol County? More to the point, what materials had I available? I had wired up my control panels using single core 0.6mm wire – I had lots of bits left over and it looked very suitable.

 

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Single core 0.6mm wire

 

First the wire had to be stripped.

 

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Forming a notch

 

Then I used a miniature cutting disc to from a notch in the wire to assist with making a right angle bend.

 

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Bending

 

I then drilled a small hole in a piece of wood to hold my length of bent wire.

 

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Extra hands?

 

I now took a second piece of wire and formed a tight loop

 

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Forming a loop

 

I used the miniature cutting disc to remove half of this loop before squeezing it even smaller in the pliers.

 

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Reducing the diameter

 

The round wire of the loop is far too fat and needs thinning down. I decided that I needed a clamp.

 

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A suitable clamp

 

I then inserted the newly formed loop into the clamp and tightened the clamp down to flatten the copper wire.

 

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Flattening

 

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Flattened

 

I was still not happy with the result so I used the mini cutting disc to remove some material from the outer edge.

 

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Even thinner

 

The smoke box handles can now be assembled using masking / drafting tape to hold them in place in the hole in the wooden block.

 

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Assembly

 

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Soldering

 

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Cutting to Size

 

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The Finished Product

 

Just a reminder that in order to fit the new handles the old plastic moulding has first to be gently pared away using a very sharp craft knife, and a central hole formed.

 

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Not a Pretty Sight

 

I have to say that I discarded the first few handles that I made as not being up to standard. However with a little practice I soon found that I could make up a pair of handles in minutes and mostly I thought they were very good!

 

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Unpainted

 

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Painted

 

Well – how many other engines should I modify?

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6 Comments


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well the obvious answer is ............. All or them that need it  after all you sayh  yhou can make a set in a few mins. its just the fitting an painting

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Hi SS,

 

The difference between the handles and the dart.

 

The dart is the bit that locates in the bar that goes across the front of the smokebox aperture. The dart is on the end of the shaft and has a spade shape on the inside that fits through a slot in the bar. You push the door shut with the rear handle (the bit on the outside) at either 3:00 or 9:00 and it is turned so the handle is hanging down at 6:00. The second outer handle is then screwed tight thus pulling the dart tight against the bar and therefore the door tight against the front smokebox ring and making it as airtight as possible. This is important of course as the low pressure caused by the exhaust steam going up the chimney in the smokebox is used to both draw air through the fire to make it burn brighter and the hot gasses throughout the various tubes in the boiler to heat the water. Loco engineering lesson over!

 

I hope this helps!

 

All the best,

 

Castle

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Excellent blog, Ray!

 

Nicely laid out and explained - great technique for making small loops in wire.  I'm going to have a go at that myself sometime.  

 

Mike

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Mike

 

Thanks for the encouragement, I bought the G clamps back in the early 1970s to clamp my baseboards together.  It is amazing how many other uses they have since been put to.  It works here on copper wire, not sure what would happen with steel.

 

Regards

 

Ray

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