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1:22,5 Gmeinder 10-12PS/German Feldbahn

Started by fspg2, March 01, 2011, 11:17:35 AM

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Allan G

Great build and wonderful craftsmanship!.....Allan

Ray Dunakin

I am constantly amazed by the precision of your work! It's like watchmaking.
Visit my website to see pics of the rugged and rocky In-ko-pah Railroad!

Ray Dunakin's World


I honestly have no idea how you do all that. Incredible. -- Russ

Allan G

Back a few pages you mentioned one of the drive gears was made of steel and the other brass. Why the two different materials? Your work is beyond incredible!!!! .....Allan


Thank you for all compliments - ist not difficult, to get precise results you need a little bit of time only :-)

Two identical materials tend like to "eat" each other – therefore  different materials are always used.
Have a look here: http://www.tandwiel.info/en/materials/materials-for-gears/


It's been a good four years since I built something on my Gmeinder 10-12PS.
It felt like the time was much shorter.

Gmeinder10-12_Zeichnung_11 (fspg2)

Well, I didn't really continue building, only a few parts were prototyped. So when I retire, I'll have a few more parts for my construction sites.  ;)

So all the tank and radiator caps came on a cast tree:

Gmeinder_10-12_Tankabdeckung_02 (fspg2)

After the master plot was released by the handbrake adjuster,

Handbremse_Gruppe_1_04-Ur-Plot (fspg2)

the parts delivered on it had to be complained about.

Handbremse_Gruppe_03 (fspg2)

During the molding process, the two parallel rows of prongs had shifted significantly.

Handbremse_Gruppe_02 (fspg2)

Handbremse_Gruppe_01 (fspg2)

The Gmeinder 10-12 had different buffer variants. I drew two different sizes on the front and back and had them printed.

Gmeinder_10-12_Puffer_01 (fspg2)

In order not to damage the area with the sprue when cutting with the cutting disc on the Proxxon circular saw, I left a small base.

Gmeinder_10-12_Puffer_05 (fspg2)

The next steps were: Milling the remaining bases

Gmeinder_10-12_Puffer_06 (fspg2)

and sanding the sides to remove the easily visible stairs.

Gmeinder_10-12_Puffer_07 (fspg2)

Gmeinder_10-12_Puffer_08 (fspg2)

Here from left to right:
Supplied buffer, severed cast tree, milled base, inside, ground buffer

Gmeinder_10-12_Puffer_02 (fspg2)



Too bad about the handbrake ratchet. All the other parts look very good. The model should be outstanding when you finish it. -- Russ

Les Tindall

This definately quality engineering in miniature, stunning stuff.


Hi Frithjof.
Always a pleasure to see your builds progressing.

Ray Dunakin

Visit my website to see pics of the rugged and rocky In-ko-pah Railroad!

Ray Dunakin's World

Franck Tavernier

Hi Frithjof,

Nice job as always, very impressive too!



The castings are perfect. Can you tell me where you have them cast?



Thank you for your comments!

QuoteCan you tell me where you have them cast?

Have a look at:

German - https://kauselmann.com/

English - https://kauselmann.com/home-en/

Lastly I spent sanding all of the buffers and drilling the mounting holes in a hard paper jig.

Gmeinder_10-12_Puffer_09 (fspg2)

Gmeinder_10-12_Puffer_10 (fspg2)

Today I put one and a half kilograms of polishing material with 4mm and 6mm edge length, some water and grinding paste from Zu Jeddeloh
https://www.zujeddeloh.de/artikel582.html#a10610 (You can choose the language freely!)

into my vibrating polishing drum:

I will try it with the buffer plates a little.

Gleitschleifen_01 (fspg2)

A small video is available here: klick

I will always check how the edges are broken and the surfaces change.

Stay healthy!


I think, if you wanted, you could be a very successful jeweler. -- Russ


Thanks for the link, Frithjof. It is always good to know good suppliers.