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Old 06-29-2010, 11:19 AM   #1
Kerry
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Default AB7031 Siddelely Puma prop

New here today, and came across this in an elederly relative's barn. Could anyone kindly help with its identification, age and what type of aircraft it might have been fitted to?
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File Type: jpg numbers.jpg (33.1 KB, 18 views)
File Type: jpg prop hub.jpg (32.2 KB, 15 views)
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Old 06-29-2010, 08:04 PM   #2
Dave
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If the stamped numbers read "AB 7031" it's for a Bristol F2A/B or a DH4 or DH9 with a Siddely Puma engine.

If not, what are the stamped numbers?
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Old 06-30-2010, 06:50 AM   #3
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Dave thanks for this - the stamped number is indeed AB 7031. I am advised I also need to find two extremely small G and N numbers the size of my little fingernail plus the initials AID if visible, to tie down where the prop came from.

I do not intend to 'restore' it but keep as is, maybe rubbing some linseed oil into it, but at 8 feet long it may be a challenge to mount on an internal wall.

Any ideas at all how much someone would be prpared to buy this kind of prop for?

Many thanks

Kerry
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Old 06-30-2010, 08:02 AM   #4
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It's hard to determine value, especially in today's market, and a closer inspection would be needed to get a better idea of condition. A few years ago I would have guessed somewhere in the $1000 to $1500 range, but collectibles values have all dropped considerably since then.

Where are you located?

(And yes, don't try to restore it now.)
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Old 06-30-2010, 08:09 AM   #5
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Am located in England. I have found a small square on the hub/root of the blade, and am trying to gently clean them to reveal the AID number in the square.

What would be the reasn for the steep decline in value - has there suddenly been a glut of wooden propellers flooding the market?
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Old 06-30-2010, 08:51 AM   #6
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Quote:
Originally Posted by Kerry View Post
What would be the reasn for the steep decline in value - has there suddenly been a glut of wooden propellers flooding the market?
Not that so much that as an economy that has people saving their money for more necessary items. Collectibles of all types seem to drop significantly during a poor economy. I base this primarily on watching sales of these (and other items) on eBay. It likely will turn around, but exactly when that might occur is anyone's guess.
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Old 07-02-2010, 09:11 AM   #7
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Hi Kerry,

I misled you slightly in our earlier correspondence. The AID numbers are small. But the G and N numbers are large, same size as the drawing number, AB7031. These will give the batch number from which I can date the prop. Also look for the diameter and pitch (D and P). I can see on the hub photo HP which is probably preceeded by 200 and followed by Siddeley Puma.

The DH4, DH9 and Bristol F2B were all powered by the Rolls Royce Eagle but there were not sufficient to go round so many of these airframes were saddled with the unreliable and lower powered Siddeley Puma engine, and others with the FIAT engine.

Your prop is not worth much because it is close to derelict having dried out in the barn. It is de-laminating. Also the wood wasp has laid its eggs in the soft wood of the prop, walnut, leaving lots of worm holes. And the original fabric which once covered the blades down to the hub has fallen away. I guess that here in the UK it has a value of around five to seven hundred quid.

With kind regards,

Bob
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Old 07-02-2010, 10:10 AM   #8
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Hi Bob,

thanks for this helpful info. I will go down to my relatives in a few weeks and see if I can find any more numbers to see if we can at least date the prop. Notwithstanding your adviories on its derelict state, I do intned to linseed it and at least clean it up, and stop any further deterioration - then mount it, and try to ascertain its origin and let you know of any new numbers I find on it.

Thanks again.

Kerry
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Old 07-02-2010, 10:40 AM   #9
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Kerry,

My advice would be to clean it carefully with warm water and a touch of washing-up liquid. Perhaps two or three bouts of cleaning.

Then wax it with pure bees-wax polish. Out of a tin. I think B&Q sell it. Don't use a modern aerosol from Sainsbury's etc which has additives which might cause the wood to bloom.

You'll be amazed at how good the prop looks after cleaning and waxing. Re-wax it at monthly intervals two or three times. Fill the worm holes with wax and they will almost disappear.

Please post a photo here when you have waxed and polished it so that other forumites can see the transformation.

With kind regards.

Bob
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Old 07-02-2010, 10:48 AM   #10
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Bob,

I'm sure on this site somewhere it states use only linseed oil and nothing else, especially not polish? Will try to find where I saw that, but will of course defer to your advice nonetheless.

Kerry
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