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Old 06-27-2013, 03:10 PM   #11
Bob Gardner
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Richard,

A phrase including a thousand words springs to mind.

Your photographs reveal all.

Firstly between 33% and 50% of the laminations are missing from your hub. In other words, it was twice as thick.

Your data translates as;
200hp The RAF 3A engine of 200hp designed by the Royal Aircraft Factory c1916, and hence the initials RAF
WT LO WT Lord, the maker
DRG 2 The drawing number AM2442

The prop was designed by Airco for their DH4 aircraft. The intended aero-engine had teething troubles and the RAF 3A engine was used in the first examples as a substitute. This combination required a different prop from normal and Airco (the Aircraft Manufacturing Company) designed one, the AM2442, where AM indicates Airco.

The manufacture of the prop was contracted out to WT Lord, usually referred to as Turner Lord. This was one of the pre-eminent firms of cabinet making and internal decorating in Great Britain. They produced work for Winston Churchill, the Duke of Westminster and the upper echelons of Edwardian Society. They were famous for designing and building the grand staircase in the First Class part of the Mauritania, which was carved in French Walnut by a team of Palestinian carvers, the only people at that time who could produce such work. In late 1916 or early 1917 they were conscripted by HMG to make aircraft props.

With kind regards,

Bob

Postscript; Dave, you might wish to move this thread to Early Propellers.
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Last edited by Bob Gardner; 06-28-2013 at 05:34 AM.
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Old 06-27-2013, 03:19 PM   #12
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Richard,

I thought I should add that;

Airco often dropped the AM from AM2442, as they have done with your prop.

They often described the aircraft for which the prop was intended above the name WT Lord. It might have been stamped faintly. It will probably be in the form DE H 4, of which the H4 part may be on the missing laminations.

Bob
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Old 06-28-2013, 02:44 PM   #13
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Bob,

Sorry I have not got back earlier, but was called away last night.

I am speechless - I would have never believed so much information could come from just a few marks and photos of part of a propeller. I can definitely hear the voice of experience speaking.

So I have only got approximately half a hub - thought I was a bit short when all the blades had been cut off. At least I have still got some part of history.

I have got the bug now - about 25 years ago I bought a twin bladed wooden propeller off, if I remember correctly, what the seller thought was a foreign aircraft from the 1930's. I am sure it had a double-barrelled name and one of the names was something like 'Parma'. It went into storage in the attic and I have not seen it since (you should see my attic!!). When time permits it will now come out and get suitably restored - it has de-laminated in places.

Once again, thanks for all your help, and Dave, thank you also for all your help - the information I gave you originally was not the best in the world.

Best regards,

Richard
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