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Old 01-14-2020, 07:56 AM   #1
synergy
 
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Default 12'4" wooden prop

Suspended on ceiling and unable to see any stamps, nos, ect on reverse side.
Uncut with blades covered with a protective black linen type material.
Maybe unused and originally thought to be a Watts make.
Too long for Spit/Hurri/Fury and has low speed tips.
Poss. seaplane but...…….any body go any further ?
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Old 01-14-2020, 09:20 AM   #2
Dbahnson
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There's not too much to go on. At that size it might be for an airship of some kind, and note that it's a left hand thread, which can indicate a pusher configuration.
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Old 01-16-2020, 09:39 AM   #3
Bob Gardner
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Hello Synergy!

Your prop is British and probably dates from late WW1 or the 1920's. Can you tell us how long it is? I might then be able to identify it. It has none of the characteristics of a Watts prop, nor is it from a seaplane. It is probably covered in Irish Linen painted black, which is characteristic of RAF props from 1918 until circa the mid 1930s when a Hydulignum finish came into use. This was a process devised in Germany in the 1930s and made under licence in GB. It is described elsewhere on this forum. The process used many thin laminations glued together, a process today called laminates, and the laminates were put into a sheath before the whole prop was immersed in liquid resin at a high temperature.

With kind regards,

Bob
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Old 01-16-2020, 10:17 AM   #4
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In the thread title it’s 12 feet, 4 inches. Note the 10 bolt hole hub and the left hand thread.
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Old 01-19-2020, 08:04 PM   #5
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Default Old 12'4" propellor

I will get back on here when the prop is on the floor and I can read the other side of the boss
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Old 01-20-2020, 08:27 PM   #6
dairwin
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Quote:
Originally Posted by synergy View Post
Suspended on ceiling and unable to see any stamps, nos, ect on reverse side.
Uncut with blades covered with a protective black linen type material.
Maybe unused and originally thought to be a Watts make.
Too long for Spit/Hurri/Fury and has low speed tips.
Poss. seaplane but...…….any body go any further ?
Wrong rotation for a Merlin, and the Spit/Hurricane used a 12 bolt Watts hub.
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Old 01-27-2020, 02:01 PM   #7
synergy
 
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Default It is a Watts propellor

Got off the ceiling:

DRG No WATTS Z1651/1.....TIGER 1V

REVERSE SIDE OF BOSS: 34792....B7014.....DEC/34....D12-25'....P 9 5'...
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Old 01-27-2020, 02:28 PM   #8
dairwin
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Blackburn Shark, Armstrong Siddeley Tiger IV radial engine.
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Old 01-27-2020, 05:39 PM   #9
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Thank you....any idea of value.....It is possible this prop was never used....no wear marks or fatigue showing......Pete
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Old 01-27-2020, 07:17 PM   #10
dairwin
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Quote:
Originally Posted by synergy View Post
Thank you....any idea of value.....It is possible this prop was never used....no wear marks or fatigue showing......Pete
I wouldn't really know, but everything has a value to a collector. There won't be many surviving, but there probably isn't any demand either. I am not aware of any museum examples of the Shark.

However it is a Watts propeller, designed by the great British airscrew designer Dr HC Watts.
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