My N&W class A 1239 (gauge 5", 1 in 10 scale)

[PeterCraymer]

Danke! I like the idea to make each half to cast together. I assume the center is solid and you will only open what is needed for linkage and springs?
I too do not understand why these locomotives in preservation do not retain the bearing covers. My only guess is that with the newer sealed bearing assemblies that they wish to keep an easy visual inspection without having to remove the cover. the originals were not sealed but in an oil case for lubrication which is not now needed. I like the look of the closed boxes also!

Peter

[Asteamhead]

Hello friends,
Some steaming of the back engine on a simple brake stand, fed by a separate boiler - all just for fun!

https://www.youtube.com/watch?v=cc6yUp463CM



Asteamhead

[NP317]

A Symphony of Motion!
Well done.
~RN

[Steamchris]

Hello

and yes, to see that beauty in motion was an awesome
expirience. Hopefully my J will do it the same way...on Day. I cant wait to see your A running completed.

All the best,
Chris

[Asteamhead]

Hello friends,
Some more work was done on the boiler jacket. Made of 1 mm stainless steel, the jacket was adapted to the lengths of the different boiler courses. Several parts were made conical and divided into two halfs. All were rolled from sheets first, longer than needed to achieve constant diameters for the remaining lengths. Cut outs were made as shown by the fotos. A bit primitive then due to the lack of larger machines.
After precise cutting by means of 1 mm cutting discs, parts were assembled on the boiler to sighn all the smaller bores. These were made again by means of primitive helper tools on the mill, which was just big enough without a margain!
Several steps of disassembling, controlling the bores, adjusting some positions and putting all together again were needed, of course.
The small threads of M 2 and M 2.5 were prepaired by punching the bores of core diameters. This method is improving depth of the thread within thin sheet metal. Thus all the brackets can be fixed easily onto the jacket. Unwanted welding on the boiler shell not necessarry!
Some radius corners are still missing yet. They will be TIG-welded carefully to the jacket later on.
To Chris: The news are the 'US-meeting of Sindelfingen' will be held at may 25 to 28 next year - and we will be there!

Happy new year to all you modelers by

Asteamhead

Cutting is a bit risky but works!

A Boiler jacket left side red.jpg[/attachment]

Same as above, as carefully as possible!

Cutting by means of thin 1 mm discs is a pleasure

Again a bit risky due to lack of stability. Higher speed in combination with low feed helps

[attachment=0]

[Steamchris]

Hi A,

good News about the US meeting.
Im looking forward to it.....

By the way, i like your sheet work on the boiler!!!

Good Step to 2017

Chris

[Asteamhead]

Hello friends of the N&W,
Some plumber's work is finished now. Steam tubes to both blower and 6SA hot water pump are hidden between boiler and the jacket like at the prototype. A wider tube as connection from auxillary superheater to the manifold in the cab was hidden, too. For minimum space between boiler shell (back end of the enlarged smoke box) and the jacket was just 4 mm, the bigger diameter was divided into 4 smaller tubes.
For using superheated steam for auxillaries (n o t for use with the turbo generator and the injektor!) on my first locomotive to full advantage, the A got an auxillary superheater, too.

The jacket is now ready for assembly, too. It will be shown next time.

Asteamhead

[Asteamhead]

Hello friends of the N&W class A,
Now the boiler jacketing made of stainless steel is completed now with the exception of the rear sheet inside the cab yet. All parts of the shell are hold in position by means of the boiler rings on the outside. Running boards were made of industrial flat material with holes of about 1/8 " diameter. The outer side T - bars were milled from 1/ 4 " sqare material - all stainless. A nasty job of several (dull) hours ...
The brackets made of flat material got a Z - step by means of a tool, made of used tool shafts and hardened again after being milled.
Next to do will be a lot more of plumbing work. T h e n time will come for the marriage of boiler and running gear to try steaming up for the first time ...

All the best by
Asteamhead

[NP317]

Wow!
That's all I can say.
~RN

[PRR5406]

Much too complex a build for me, so it's wonderful to see such a lovely locomotive come to life under the efforts of anther hobbyist!
This is lovely.

[Asteamhead]

Hello both,
Let me thank you for jour kind recognition first!
Those varity of how one can build an engine of his own by different methods, tools and materials is one big advantage of our hobby!
Look, there are professionel toolmakers who construct and build parts of awesome precision. Some are producing castings of unbeliveable complexity. Some plumbing work already was shown in this forum, unsurpassed by nobody. And others achive a perfect looking overall finish and lettering of their engines. I do like all these activities and take them as inspirations. Thus I'm trying to ad some details and inside looks to the making to inspire or help others who are working at similar parts. The use of stainless steel throughout is more a passion to me than a necessity. I just like this material.
After all, my engine is intended to become a workhouse yet, like the prototype was. Thus no threads of less than M 2 (about 5/64 ") in diameter will be used at the model for example.
Carry on!
Asteamhead

[Asteamhead]

Hello modelers,
There is one more item constructing of which made a lot of fun to me! Height is a little more than 2 inches but working as the prototype.
Method of making may be of interest to others who need similar items for their projects under construction.
Asteamhead