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Old 02-09-2015, 07:04 AM   #1
Bob Gardner
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Default Databases of WW1 propellers

A note to my fellow forumites to let you know that in the next twelve months I shall publish in spread-sheet format on CD;

1. My database on German WW1 aircraft propellers, about 1000 lines of data describing maker, diameter and pitch, engine and aircraft type where known.

2. And my database of British WW1 aircraft props, which runs to about 2000 lines of data.

If you have a British or German WW1 prop that you have not told me about (many of you have for which I am most grateful) or if you have any documents from the time which list propellers, please let me know.

With kind regards,

Bob

Dave; could you make this a sticky please.
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Old 05-03-2015, 02:28 PM   #2
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Default WW1 Propeller from training plane?

This propeller my father had for many years.
The numbers on it are:
D2971, P3170
G571NG4 (I think, not sure on the 5 which might be B, and the G might be 6)
140 HP RAF
Can you identify this one please?
Jeff & Maz
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Old 05-03-2015, 04:46 PM   #3
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Jeff & Maz,

Thank you for your information.

Your prop is very probably from a WW1 reconnaissance aircraft from late 1917 or early 1918, the RE8. It is four bladed.

The data translates as;
D2971 The diameter of the prop in mm
P3170 The pitch of the propeller in mm
140hp RAF The 140hp engine designed and made by the Royal Aircraft Factory (hence RAF)

The key information is the drawing number, which you haven't mentioned, which is almost certainly T6296, where the designator letter T indicates the Royal Aircraft Factory.

With kind regards,

Bob
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Old 05-06-2015, 06:18 PM   #4
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Quote:
Originally Posted by Bob Gardner View Post
Jeff & Maz,

Thank you for your information.

Your prop is very probably from a WW1 reconnaissance aircraft from late 1917 or early 1918, the RE8. It is four bladed.

The data translates as;
D2971 The diameter of the prop in mm
P3170 The pitch of the propeller in mm
140hp RAF The 140hp engine designed and made by the Royal Aircraft Factory (hence RAF)

The key information is the drawing number, which you haven't mentioned, which is almost certainly T6296, where the designator letter T indicates the Royal Aircraft Factory.

With kind regards,

Bob
Hi Bob,
Please let me know how I can sign up for a copy of your British propeller database on CD, and the cost.
I have a DH4 4-blade prop DRG2442, for a RAF 3A engine, batch G299 (or 289),
N.1
Could you tell me a little more about it?
Many thanks
Mike L, Urchfont.
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Old 05-07-2015, 07:08 AM   #5
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'Morning Mike,

I am about six months away from publishing my databases on CD. I first have to finish and publish the last in my series of books on WW1 German props. I'll put a note here and on my website as both things come to market.

I have recorded your prop before, presumably from the man you bought it from.

The drawing number is AM2442, where AM indicates AIRCO who built all the WW1 aircraft designed by Geoffrey de Havilland, and this prop was fitted to both the DH4 and DH9 with various engines. The DH4 is recorded with the RAF3A engine of 200hp but I have not found any reference to the DH9 using the RAF 3A engine. It was often fitted with the BHP 230hp engine.

The specified diameter and pitch for the prop were 3050mm and 3670mm respectively but makers were allowed small variations due to production tolerances; hence yours at 3048 vice 3050 and 3640 against 3670mm.

I have recorded only one maker of this prop, other than AIRCO, which was WT Lord. The Ministry of Munitions paid 35-10s-6d for a similar size of four-bladed prop.

I believe the contract for batch number 289 was issued in Autumn 1917, but a batch of 500 props made by Bristol for the Bristol Scout, with batch numbers from 302 to 306 was delivered in January and February 1918. It is likely that a three month gap between the issue of the contract and delivery was normal.

As ever, there is a degree of supposition in my interpretation of the data that I have gathered, so my views should not be thought of as immutable fact.

With kind regards,

Bob

Bob Gardner
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Old 05-10-2015, 05:38 AM   #6
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Default Thanks Bob,

What does the G57IN64 indicate?
I've checked again and it is a 6 not a G.
Thanks for your information.
Marian
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Old 08-09-2015, 11:54 PM   #7
Steve Maghielse
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Hi Bob,
Do you also have a database of U.S. made WW1 aircraft props? My Grandfather made many props for the Government during WW1. I would love to learn more of the History.
Thanks!
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Old 08-10-2015, 06:25 AM   #8
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Steve,

I don't! Only British and German WW1 props. But Dave Bahnson, who founded this site, is the expert on American props. I'll copy this post to a more public page in the forum, as others might also have some advice.

With kind regards,

Bob
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Old 12-15-2015, 08:40 AM   #9
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Hi Bob,

I would be very interested in a copy of your database when it is available. Do you have a publication date in mind yet?

Best Regards

Joe Marsden
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Old 12-15-2015, 09:21 AM   #10
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Joe,

About a month or two. I should think.

Bob
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