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Old 02-09-2014, 10:40 AM   #1
camaroon4me
 
Join Date: Aug 2012
Location: Clinton twp, MI
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Default My Autographed Flottorp Prop

I am finally getting around to posting some pics of this propeller. I received it from my father before he passed in Sept. This prop was in our attic in Michigan since 1968, not sure when my dad got it, but he worked for Bohn Aluminum and brass, and I think that is part of the story. I believe the metal on the prop was from Bohn.

This prop has signatures on it, it looks like it was used in the 1927 air races, referencing "Spokane" etc. Also some reference to Santa Fe N.M.

I am trying to get a ticket to the Antiques Road Show in Chicago, seems appropriate since the prop was mfg'd there.....Will find out in April. Very interested in what the value of this prop would be with all of the important aviation people involved.
Enjoy!
John V.
Clinton Twp, MI
Attached Images
File Type: jpg eddie stinson.jpg (93.3 KB, 27 views)
File Type: jpg whole prop 2.jpg (13.7 KB, 24 views)
File Type: jpg autographed end 2.jpg (73.9 KB, 21 views)
File Type: jpg flottorp decal 1.jpg (95.7 KB, 20 views)
File Type: jpg paul richter jack frye.jpg (84.7 KB, 22 views)
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Old 02-10-2014, 08:08 AM   #2
Dave
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Don't know about the signatures, but I think that's one of the early Flottorp decals. Are there numbers stamped on the prop? I'd be surprised if the Antiques Road Show knows anything about propellers, but they probably have a good idea about the value of the autographs themselves.
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Old 02-11-2014, 01:20 PM   #3
camaroon4me
 
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The markings I can find are SC9386, and 1238 in the hub. There is an "A" in a square with a number under it. Maybe 115 or 11s, judging by the measurements, it was used on the OX5 engine.
Thanks for any further information.
John V.
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Old 02-11-2014, 09:34 PM   #4
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The "SC" number is for "Signal Corps", and I think the "A" + number is likely an inspections stamping.

Let us know what Antiques Road Show has to say about it.
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Old 02-12-2014, 02:29 PM   #5
camaroon4me
 
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Quote:
Originally Posted by Dave View Post
The "SC" number is for "Signal Corps", and I think the "A" + number is likely an inspections stamping.

Let us know what Antiques Road Show has to say about it.
Dave, do you or anybody else know if the Hisso engine used the same prop as the OX5? The Waco 10 had a lot of entries in the air races, but several had the Hisso engine instead of the OX5. Just trying to narrow down a pilot that may have used this prop.
JV
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Old 02-12-2014, 03:55 PM   #6
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They used completely different hubs and therefore different props. You can tell which one yours isn't by its hub dimensions. See this page for an explanation, and it leads to this table, which shows the OX 5 hub to have a bolt hole circle diameter of 5 1/4". Without measuring, yours looks more like an OX5 hub than a Hisso, but you should measure to see if it's at least one of those. Neither match confirms for sure that it's one engine or the other, but it does effectively rule one of them out completely.
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