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Scratch Built 7mm Loco - Styrene - NG


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I decided that I quite like 7mm scale and I quite like British outline narrow gauge but there is nothing RTR to be bought. There are some brass kits but I am not sure I am quite ready for that so I decided to start with a 00/HO RTR kit and build a body onto the chassis - I mean how hard can it be :-)

 

I decided that I would start with something INSPIRED by the Camber & Rye Bagnalls - please not I used the words 'inspired by' and NOT ' a perfect replica of' - I am just using those locos as inspiration.

 

The RTR kit I will be using is a Lilliput HO Fireless Loco - it has nice small wheels and wheelbase and some suitable valve / piston gear - it's the wrong way around but that's not a problem, I will simply build the body the other way around.

 

So I started with this ...

 

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Then I took it apart ...

 

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I put a card footplate on it and stared at it for a while in mild panic ...

 

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This is very roughly how it might end up looking ...

 

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Then I started sawing bits off ( so I can get couplings in the limited space ) ...

 

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It seemed like such a good idea before I started 

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Obviously the first thing I needed was a footplate so I made that out of some laminated styrene but the first problem would be the fact the where I had sawn the chassis front and rear to make space for the Kadee couplers I will be fitting meant the chassis was now too short ( cosmetically ) front and rear.

 

I didn't want to attach anything permanently to the chassis so I decided to attach some 0.5 mm styrene shapes to the bottom of the footplate. To hide the step ( of 0.5 mm ) I made some curved gussets - this will, I hope, fool the eye into not seeing the difference either side of the gusset. I will add a row of rivets behind the gusset later to show a fixing method and reduce the totally flat look as well.

 

I have angled additional chassis plates so these match the depth of the buffer beams when these get added.

 

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The pictures make it look like it doesn't quite line up at the bottom with the original chassis but it does - I promise 

 

This is my first attempt at this so please feel to comment with suggestions and any big mistakes I am making

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Hi,

 

So far it looks fine, however, it looks to me that there would be a lot of weight over the rear wheels, compared to the front, due to the side tanks. I wonder if you could move the wheel base back - longer crank rods?, or make it as  a saddle tank? It just looks a bit out of balance to me.

 

Best wishes,

 

Ray

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Hi,

 

So far it looks fine, however, it looks to me that there would be a lot of weight over the rear wheels, compared to the front, due to the side tanks. I wonder if you could move the wheel base back - longer crank rods?, or make it as  a saddle tank? It just looks a bit out of balance to me.

 

Best wishes,

 

Ray

...or make it an 0-4-2t?

JF

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I agree with the pony truck as it would set it off nicely and look better balanced.If you do go for a saddle tank then you may need a rear bunker

 

I have half cheated as  I bought a cab from Smallbrook Studio, super quality and very reasonably priced. Not done anything with it yet though

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While the pony truck may make it look more balanced, remember that on the real thing, the cab is mainly a hollow box made of thin sheet, while the water tank and boiler would be where all the weight (in the form of steel and water) would have been.

Personally, I think the visual balance could be improved by extending the side tanks forward a little, which might also make it look better without a pony truck. Then again, I normally try to avoid messing with a chassis that already works well! 

 

Looks like a very interesting project though, and a very nice design. I shall keep an eye on this thread. :)

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