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Author Topic: The Schoenner-Falk transformation  (Read 961 times)

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The Schoenner-Falk transformation
« on: July 21, 2019, 04:59:22 am »
In my last tread on the EP Cosmos Nick popup the question if there was interaction between the pre war, Nurnberg manufacturers.
https://www.officeofsteamforum.com/restorations/ep-cosmos/new/?topicseen#new

And to be clear, if I say pre war, I always mean pre 1940, and that is also my domain of collecting.
I mentioned that Falk took over Schoenner in 1912.
I don't know why Jean Schoenner (*1851 - +1921) sold the factory to Falk, my guess is, he just wanted to retire.


Anyway, what Falk bought was a big production company.
And you can Imagine that when you buy such a big company, you not going to stop your predecessor work suddenly and shift over to your own designs.
There will be a transition period where you use old casting molds etc...
And I got a fine example of such a Schoenner - Falk engine.





Technically it's a Falk, you can see that clearly in the stamp on the underside of the casted bace (JF = Jozef Falk)…


But the design of that casted base is still typical schoenner.
Here is the base of a late schoenner, so you can see the identical design…


Now, you would think that this engine was produced direct after Falk took over, but that is not true.
The engine was produced somewhere between 1928 and 1930.
This only points to that the moulds  where a stock design and where used whenever  it sooted a new engine.

And speaking of copying an other manufacturer, the boiler design is a vage copy of the by that time popular 10/13/.. Bing range.
Even more resembling is the 1909 130/75 Bing

Coming to the engine it self.
It's a Falk 474/1
The engine is still unrestored, but will get the proper attention it needs, depending on my spear time the next coming weeks.
Biggest issue is the axle.
It seem that it was dropped or squeezed, what ever, but it it resulted in a bent crank.
The flywheel has such a bad wobble that you just can't run it.
Straiten it too reasonable proportions is not going to be easy.
The danger of breaking it is very high.
Best chance of success is to heat it up, this makes it more flexible to bend but the danger of breaking stays high, so fingers crossed.

Also the manometer has broken off only leaving the stem.
But fortunately I found an authentic replacement, that hopefully will arrive next week.

The rest is pure cosmetics.
I will restore the nickeled band  in-between the two embossed bands on the top of the boiler, and some re blueing of the rest of the boiler.
But overall it got the potential to become a nice gem again.
But that's for next time…

Cheers,
Danny
Danny
"Das lied schläft in der Maschine"
(the song sleeps in the machine) lyrics Einsturzende Neubauten song "Nnnaaamm"  http://stoomwereld.webnode.be

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Re: The Schoenner-Falk transformation
« Reply #1 on: July 21, 2019, 12:15:47 pm »
Just a before video how far of the crank has bent…
Danny
"Das lied schläft in der Maschine"
(the song sleeps in the machine) lyrics Einsturzende Neubauten song "Nnnaaamm"  http://stoomwereld.webnode.be

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Re: The Schoenner-Falk transformation
« Reply #2 on: July 21, 2019, 02:09:51 pm »
I can't be sure from that short video Danny, but it does look like it is the crank that is bent, at least more so than the flywheel. But perhaps I'm being deceived and it really is both.

Whatever the case, I certainly hope you are able to bring that wonderful machine back into a very good useable condition!
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Re: The Schoenner-Falk transformation
« Reply #3 on: July 22, 2019, 03:41:19 pm »
Succes!!!

By heating it up I managed to to bend it strait again.
First by pure rough bending by hand, always under heat of corse and after fine tuned it on my lathe also there under heat.

But I have to say this is no rocket science, and there is no guarantee for succes.
If the axle had hair cracks the chance that it would have broken in this case was for 95%

But should it have been broken It still could have been repaired, but with much more work than now was applied

Anyway it's strait again, and I'm happy…


Cheers,
Danny
Danny
"Das lied schläft in der Maschine"
(the song sleeps in the machine) lyrics Einsturzende Neubauten song "Nnnaaamm"  http://stoomwereld.webnode.be

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Re: The Schoenner-Falk transformation
« Reply #4 on: July 26, 2019, 09:04:54 pm »
Well, it's ready.
There is still a bit of wobble in the flywheel but this is acceptable.
The base is repainted as it should look, and the boiler blued.
Here is a video of it's first steam up…


A few photo's will follow…
Danny
"Das lied schläft in der Maschine"
(the song sleeps in the machine) lyrics Einsturzende Neubauten song "Nnnaaamm"  http://stoomwereld.webnode.be

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Re: The Schoenner-Falk transformation
« Reply #5 on: July 27, 2019, 06:11:43 am »
Well, this was the unrestored version…

And this is the restored version…




Cheers,
Danny
Danny
"Das lied schläft in der Maschine"
(the song sleeps in the machine) lyrics Einsturzende Neubauten song "Nnnaaamm"  http://stoomwereld.webnode.be