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Dean Goods 2500 gal tender Part 2


wenlock

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Its been a couple of weeks since my last blog entry, so here's the progress on the Dean Goods tender build. Part 1 ended with the body almost completed, but with the chassis needing more work to finish the project.

 

Chassis at end of last blog entry

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Setting up the brakes was the next step. The components were removed from the fret, cleaned up with a file and the holes drilled with a 0.8mm drill.

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The kit provides a choice of brake shoes, one made by laminating etched brass components and the other from white metal castings. Both methods would I'm sure give an acceptable result from an appearance point of view, however I don't like brake shoes to be made from a conductive material. I'm going to use the tender wheels to provide additional current pick up from the track. Trying to get the brake shoes in close contact with the wheels and not cause a short is not my idea of fun, so I decided to make some non conductive duplicate shoes.

 

The white metal castings had nice detail, so I used these as masters and poured a mould around them using cold curing silicone rubber.

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The masters were removed from the mould once it had set, acrylic resin was then poured into the mould and allowed to cure.

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Once the acrylic shoes had fully polymerised they were removed from the silicone mould.

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The acrylic shoes were then cleaned up and drilled to take a 0.8mm brass wire

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0.8mm brass wire was threaded through the brake hangers, brake shoes and the chassis. Once happy with the position of all the components, solder was use to fix everything in position.

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Once I was happy that the chassis was still free running with the brakes in place, Sand pipes and the vacuum pipe were bent up using 1.2mm brass wire.

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The axle boxes and springs were white metal castings, so these were glued in position using a rapid set epoxy resin.

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This completes the chassis build, so the body was placed in situ to check clearances and levels.

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I'm pleased with the end result and think that the kit captures the prototype tender well. I'm going to leave improving the looks of the coal rails until i can get some half round brass wire from Eileens Emporium.

 

Before I paint the tender I want to complete the loco that's going to pull it. There's a rather nice looking Martin Finney Dean Goods kit, that is sat on my work bench and needs building, so that's all for now!

 

Best wishes

 

Dave

 

Edited by wenlock
Restore pictures

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9 Comments


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  • RMweb Gold

That's very sophisticated stuff, Dave. Getting those brake shoes so close to the tyres really does go a long way to making it look like a proper piece of engineering.

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  • RMweb Gold

Thanks Al, because the chassis is compensated, it was the only method I could think of, that would guarantee I wouldn't get electrical problems later!

 

Dave

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Very clever solution Dave.  Have you thought of suggesting it to Mr F?? Might be a market there?  Through him of course because of the copyright issues.

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  • RMweb Gold

I guess if Mr F was interested we could come to a mutually beneficial agreement! I've no problems making copies of stuff for my own use, but you're quite right, once you start copying for profit, you're on very thin ice!

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  • RMweb Gold

Love the idea of those replacement break blocks, leaves me thinking about experimenting in 4mm scale.

 

Looking forward to seeing the loco come together, I have the 4mm version sat in my to do pile at the moment (yet to decide what tender I am going to need though.)

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  • RMweb Premium

Entirely agree with Barry Ten's comment - really sophisticated, fine modelling.  Actually, I'd say you're really in the business of engineering rather than just modelling.  Superb.

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  • RMweb Gold

Is half-round available in that size, or will it have to be a bit of DIY filing?

I've had a look on Eilleens Emporium website and in the "metal sections" page they list half round brass wire in 250mm or 500mm lengths in widths of 1.0mm, 1.2mm, 1.5mm, 2.0mm and 3mm. I reckon the 1.2 mm should be spot on for my needs, I'll just need to be very careful not to melt the leaded tender corners while I'm attaching it!

 

Dave

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  • RMweb Gold

Thanks for the positive comments regarding the duplicate brake shoes guys. Mould making Is a really easy technique to master that I've used on a number of occasions for making things that I've wanted as multiples. I've used this method in the past for making things like axle boxes and even ornate model chimney pots!

 

Dave

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