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Old 03-18-2019, 01:36 PM   #1
ESNAULT.D
 
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Default "L. Paulhan et De La Grandville" 130 HP

hello my name is Didier I am French and I collect the old military objects

I just returned this brand propeller "L. Paulan and De La Grandville"
length 2 feet 51
8 holes
130 HP
Serie 37
N ° 596
special 18

hub diameter + - 70 mm

sorry for the translation, thanks GOOGLE


thank you for your answer Didier

https://i21.servimg.com/u/f21/15/32/45/65/img_1312.jpg

https://i21.servimg.com/u/f21/15/32/45/65/img_1310.jpg

https://i21.servimg.com/u/f21/15/32/45/65/img_1311.jpg

https://i21.servimg.com/u/f21/15/32/45/65/img_1313.jpg

https://i21.servimg.com/u/f21/15/32/45/65/img_1315.jpg

https://i21.servimg.com/u/f21/15/32/45/65/img_1314.jpg

Good evening,

here are some new photos, after having cleaned a stain of white painted on the hub, this propeller would be for a NIEUPORT 17 of 130 hp, it remains for me to understand the "special 18"

https://i21.servimg.com/u/f21/15/32/45/65/dscn7726.jpg
https://i21.servimg.com/u/f21/15/32/45/65/dscn7811.jpg



20 mars 2019

Hello everyone,

By summarizing all the documents you have communicated to me, is it possible that this propeller was mounted on:

a Nieuport 17 equipped with a Rhône 9jby engine of 130 hp all between 1917 and 18 without leaving a trace in the documentation

Didier

Hello everyone,
I apologize for this late response, I was away from my computer and the network did not allow me to do much. I thank you for the work you have done, I am making a photo of the Logo tomorrow.
Yours sincerely Didier

Last edited by ESNAULT.D; 03-27-2019 at 01:07 PM.
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Old 03-18-2019, 05:43 PM   #2
Dbahnson
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If someone doesn’t have some information by Thursday, I should be able to look up that Serie number when I get home.

Those are French inspection stamps (“SFA”).
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Old 03-19-2019, 05:58 AM   #3
pmdec
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Hi,

Please, post a pic of the complete side opposite to the one with serial and prop numbers.
And could you post also a larger pic of the decal without cropping it?

Regards,
PM
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Old 03-19-2019, 11:28 PM   #4
pmdec
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Hi ESNAULT.D,

Thank you for the new pics.
I suppose is prop is far larger than 2'51" wich would be too short for a prop of that era! Perhaps 2m51? If true, the prop was made for a Nieuport 17 ("Nie XVII") fitted with a Le Rhône 9Jb ("Rh 130 HP")wich was 110 to 120 HP in 1917-1918 and after 130.
This serial (37) is not documented in French props list made by French Military at the end of 1917 nor in the "American papers" which are from 1918. This, and the fact the engine was 130 HP is an indication the prop was made after 1918 or, at least, at the end of that year.
The decal has also a design different of that on 1917 and 1918 props: it is the first of this kind I am seeing: could you send me a large and very clear picture of it (pmdecombeix at yahoo dot com)?
As Dave said, the small squares are French airworthy stamps: inside them, there are the letters SFA for Service des Fabrications de l'Aviation [militaire). Those stamps were square until 1922 (after, they are hexagonal).

The writting "Special 18" is there because the prop is not made from ~20mm thick laminations (as usual) but from very thin ones (about 5mm thick) which was a specific fabrication by Paulhan and De La Granville.

Regards,
PM
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Old 03-27-2019, 07:12 AM   #5
pmdec
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Hi,

Just a word for Bob: Not a word for my answer in his 20th March edit: French people are no more polite than many English forumers... And no pic, posted nor mailed, of the decal! Probably too hard a work!

And to correct the last words added to the first post: the propeller was made for Nieuport XVII but has never been fitted on a plane as the flat side shows.

Regards,
PM
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Old 03-27-2019, 08:14 AM   #6
Dbahnson
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PM and Bob,

I am beginning to re-think this whole forum thing, and I'm re-considering Bob's suggestion several months ago that we should just make it a paid service. I share in the disappointment that there seems to be little acknowledgement or appreciation from some members who post questions, get detailed answers, then seem to disappear. Maybe it's just a sad demonstration of the human condition. Maybe there are other good reasons.

But money may be the best way for a poster to demonstrate his or her appreciation for the work that is done here. It's a shame, because some people do show it in their responses, but it's certainly an insult when others don't.

I'm going to work on this again. It will take some time to come up with a plan and we may just have to try something out and re-think if after a few months, but what we're doing now doesn't have the reward that it should have for all of our efforts. I don't want to just shut it down, because there is still a lot of useful information stored here, but I'm looking at a way to "privatize" it somehow so that we only have members who contribute (one way or the other) to the community.

Dave
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