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Old 07-08-2015, 06:12 AM   #1
denkeinerkennt
 
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Default Propeller Behrens & Rüggeberecht

Hi I'm new heir in the forum and have the same time a question.
In Germany we have a well-preserved propeller from Behrens & Rüggebercht I20
Search and contact information for an eventual sale, can someone help me there.

Many Thanks,
Torsten
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Old 07-08-2015, 08:56 AM   #2
Bob Gardner
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'Morgan Torsten,

We need details of the data stamped on the hub and/or on the blade and photographs. This maker made props during WK1 from 1913 to 1918.

mit freundliche Grüssen,

Bob
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Old 07-09-2015, 06:10 AM   #3
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Good morning,
here are photos from the propeller.

Best Regards,
Torsten
Attached Images
File Type: jpg DSCN0289.jpg (82.3 KB, 14 views)
File Type: jpg DSCN0288.jpg (46.1 KB, 19 views)
File Type: jpg DSCN0285.jpg (94.1 KB, 21 views)
File Type: jpg DSCN0286.jpg (86.8 KB, 25 views)
File Type: jpg DSCN0291.jpg (92.9 KB, 15 views)
File Type: jpg DSCN0290.jpg (73.5 KB, 11 views)
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Old 07-10-2015, 09:31 AM   #4
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Torsten,

Excellent photographs. This is a superb prop. But to identify which aircraft and motor it came from we need to know the data stamped on the upper surface of the hub, the opposite side to the name of B & R, which appears to be close to the ceiling! Good luck.

Bob
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Old 05-31-2016, 08:57 AM   #5
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Hello Bob,
I would have possibly a buyer, you have an approximate price which one could ask for.?
Thank you very much,
Torsten
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Old 05-31-2016, 05:10 PM   #6
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Torsten, it's unrealistic to expect an accurate valuation of any item that isn't fully and clearly described to the person doing the evaluation. In this case it appears that some data is missing. I also note what appears to be a major blemish in the hub (carved out for a clock or similar device).

See this page for some perspective.
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Old 06-01-2016, 08:39 AM   #7
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'Morgen Torsten,

Am I correct in thinking that your forum name den keiner kennt means that you are Mr Anonymous? Or does it mean he who knows nothing?

Valuing propellers is always difficult. There is never a simple answer to this simple question, so in some respects we also know nothing! Your prop does not have a fixed value. It is worth what someone is willing to pay you and what you are willing to receive.

Behrend und Rüggerbrecht were Berlin makers, in existence from 1912-c1918. The prop appears to be in excellent restored condition. The hub centre has been cut out to accommodate a clock or some-such, but this is typical of many WW1 propellers. Had this not been done the propeller may not have survived for a hundred years! An irony we have to live with! And a cabinet-maker could make an almost invisible repair.

My guess is that the prop would sell at auction for around €1200/$1200. B ü R were Berlin makers, in existence from 1912 to c1918 and are so rare that it is unlikely that you or the buyer would ever find another for sale.

We do need to know the data on the hub, which is likely to be on the top of the hub, near the ceiling, in your photo. The word STAND is visible and indicates the test revolutions which the prop had to reach, here 1370 rpm which suggests a Mercedes 160ps engine. If so, the diameter of the propeller will be between 2730 - 2800mm and the pitch 17-1800mm. Such props by this maker are known to have been fitted to the LVG C II and the Friedrichshafen FF46, called the D II by Idflieg.

Mit freundliche Grüssen,

Bob
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Old 06-01-2016, 09:35 AM   #8
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Hi Bob y Dbahnson , the name gillt rather for "unknown"
Thanks for this useful information. I thought already that you do not exactly
can say a price, and it is difficult to do this through photos, thank you.
I'm the day in Germany and look at times on top for the rest of the data.
Many greetings,
Torsten
> Googeltranlate <
(my English is not good)
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Old 06-14-2016, 06:20 PM   #9
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Hello,
I have now attached the missing data, photo attached.
I hope you can tell me more data about the propeller.
Thank you very much
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File Type: jpg IMG-20160610-WA0001.jpg (91.2 KB, 14 views)
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Old 06-16-2016, 06:16 AM   #10
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Good Morning Torsten,

Thank you for this data. It is a puzzle and I have not recorded any propeller intended for the 150ps Benz engine with these dimensions. Most propellers for this engine have a diameter (Durchmesser) of 2700-2750mm, like yours, but the pitch, (Steigung), is around 1750mm, not the 2000mm stamped on yours.

Your propeller was made for the Army, Die Fliegertruppen. The Imperial Navy were a major user of the Benz 150ps engine but the nature of their aircraft required an even smaller pitch, usually around 1580mm.

B u R also made propellers for the 150 Benz engine used by the Austrian army. I don't have any records of these propellers.

I regret I cannot help.

With friendly greetings,

Bob
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