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Old 04-04-2013, 02:51 AM   #1
Geertse
 
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Default Prop boss

This one is a rare one.
Hub is 25 laminations
Blades are 16 laminations
Text is hard to read:
What I can see is :
On the side
13118
ColleBC 1
On the front there's:
CJ , 1,21,2 and 562
Id please??
Greetings,

Last edited by Bob Gardner; 04-04-2013 at 05:26 AM.
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Old 04-04-2013, 05:27 AM   #2
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Geerste,

I don't know. Can you post some photographs?

Bob
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Old 04-04-2013, 09:11 AM   #3
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pictures added
Attached Images
File Type: jpg P1060355.jpg (26.1 KB, 11 views)
File Type: jpg P1060353.jpg (33.0 KB, 14 views)
File Type: jpg P1060346.jpg (31.9 KB, 12 views)
File Type: jpg P1060348.jpg (31.2 KB, 12 views)
File Type: jpg P1060349.jpg (37.2 KB, 11 views)
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Old 04-04-2013, 09:13 AM   #4
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another picture
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File Type: jpg P1060350.jpg (39.5 KB, 7 views)
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Old 04-04-2013, 02:59 PM   #5
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Good Photos Geerste,

But it doesn't help much.

It looks German from c1918 but I can't read any of the data. The elongated hub is a feature I haven't seen before.

With kind regards,

Bob
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Old 04-04-2013, 03:27 PM   #6
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There's an old thread where a similar marking appears on the hub.
It's from a salmson airplane.
But the prop itself doesn't match.
Greetings,
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Old 04-04-2013, 03:30 PM   #7
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Sorry it's a picture on the site where you can also see Colle...... On the hub.
It's on the French prop gallery.
salmson A2A
Grtz
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Old 04-06-2013, 02:56 PM   #8
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I've seen a similar prop from ratmanoff but could not read the markings.
It has an equal amount of layers and the same color.
The owner told me that is was for a Spad.
Could someone confirm this please?
What type the prop is?
See pictures.
Greetings,
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Old 04-06-2013, 06:20 PM   #9
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Hi,

I think the markings above 13118 are "SERIE NUMERO 2".
If this is right, the prop diameter has to be 2,48 meters, with a 188 millimeters blade width, a 70 millimeters central hole and 150 millimeters hub thickness. And there is to be fabric between laminations: It is very easy to see it with a magnifier or a close up picture.

For the other French prop hub, I can't tell anything more without large and clear pictures without flash, as asked.

Regards,
PM
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Old 04-07-2013, 03:17 AM   #10
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Hello,
You're right.
It's 70mm central bore and 150mm thickness.
And between laminations there could be some sort of fabric or it might be glue.
What airplane was it used on ,and the period please?
Greetings and thanks for the info.
Whats the type of propeller then?
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