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Author Topic: nearly extinct hot air engine  (Read 131 times)

parallelmotion

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nearly extinct hot air engine
« on: November 15, 2022, 09:53:33 am »
As a toy engine collector and especially a hot air engine collector, this is something of a holy grail for me. It is by J. Schoenner and is known only from an 1895 toy catalog; by 1900 it has disappeared from Schoenner catalogs. But what is little known is that it was a toy version of a contemporary "real" hot air engine that was sold in Germany from about 1881 until the early 1900s. This was the Buschbaum engine which was awarded three German patents and available in sizes from 1/2 to 3 HP. But no full-sized Buschbaum engine has ever been found and in this case the toy version may be the only surviving echo of the species.

https://youtu.be/GjhYbB-Pwv4


St Paul Steam

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Re: nearly extinct hot air engine
« Reply #1 on: November 15, 2022, 09:59:58 am »
 That is a lovely engine Brent, it scarcly looks used. 
Bruce, St. Paul Indiana, USA
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parallelmotion

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Re: nearly extinct hot air engine
« Reply #2 on: November 15, 2022, 10:20:56 am »
Thanks Bruce. The 127 years worth of oil and grime I cleaned off did a great job of protecting the original finish. Piston was stuck with old oil but that was a 2 minute fix.

Stoker

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Re: nearly extinct hot air engine
« Reply #3 on: November 15, 2022, 10:50:47 am »
Bent crank or a mis-aligned bore on the flywheel.

I think it would definitely be worthwhile to look into that issue and possible fixes for it.

Certainly, that amazing engine is well worth finding a way to improve that wobble, if it can be done without causing any harm to such a classic.
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parallelmotion

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Re: nearly extinct hot air engine
« Reply #4 on: November 15, 2022, 11:18:47 am »
These were never intended to run with the precision of model engines. Yes, I saw the wobble on the first run but really doesn't bother me. It's a toy that's over 125 years old after all and I won't risk doing any straightening of a very slight irregularity in the crankshaft. The longer I'm in this hobby the more I leave well enough alone, but realize not everyone approaches things the same way.

tenniV11

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Re: nearly extinct hot air engine
« Reply #5 on: November 15, 2022, 11:52:17 am »
Very beautiful and rare - thanks for the video
I agree about old engines and patina - I would not
make any modifications to the flywheel - it is
my opinion that a bit of wobbling is sympathetic,
but not on a modern Stuart!

Arnold :D

 

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