Wooden Propeller Forum  

Go Back   Wooden Propeller Forum > Wooden Propeller Identification > "Early" Wooden Propellers

Reply
 
Thread Tools Display Modes
Old 04-08-2013, 10:05 AM   #1
doycowz
 
Join Date: Apr 2013
Posts: 7
Default Huge wooden prop

I have an old wooden prop that has copper tips, I have been told it is pre WW 1... I have had it for years,, could someone please look at it and maybe shed some light on this for me,,,
Attached Images
File Type: jpg IMG_6423.jpg (53.1 KB, 57 views)
doycowz is offline   Reply With Quote
Old 04-08-2013, 01:20 PM   #2
MWP_Lamar
Moderator
 
Join Date: Jan 2006
Location: Louisiana
Posts: 762
Default

Does it have any marking on it, especially on or near the hub?

Lamar
MWP_Lamar is offline   Reply With Quote
Old 04-09-2013, 05:42 AM   #3
Bob Gardner
Moderator
 
Bob Gardner's Avatar
 
Join Date: Jan 2006
Location: The North of England
Posts: 1,466
Default

Some photographs of the data will help. Please photograph all four sides of the hub so that any letters or numerals can be seen. This is very often difficult. You might need several attempts. Photographing at a slant against the light sometimes shows data in relief.

With kind regards,

Bob
__________________
Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
http://www.aeroclocks.com
Bob Gardner is offline   Reply With Quote
Old 04-09-2013, 08:27 AM   #4
Dave
Moderator
 
Join Date: Jan 2006
Location: Vermont
Posts: 2,831
Default

It does have a pre-WW1 "look" about it, although the metal sheathing was certainly less common then. Be sure to include good close-up photos of the hub area.
__________________
Dave
Dave is offline   Reply With Quote
Old 04-12-2013, 12:28 AM   #5
doycowz
 
Join Date: Apr 2013
Posts: 7
Default Huge wooden prop

Thanks guys for the feedback,, I will def take some photos and post them,,, I will try to get numbers but as I can tell I dont see any,,,this prop is very light, and very old,, or so it seems,,,
doycowz is offline   Reply With Quote
Old 04-13-2013, 12:52 PM   #6
D.Hicklin
 
D.Hicklin's Avatar
 
Join Date: Oct 2011
Location: Seattle Washington.
Posts: 176
Default age and weight?

Hello from Dennis in seattle. That is indeed an interesting looking prop you have there. Please dont take any of this wrong, its just an observation, based purely upon the picture you have posted. You had indicated that you have had the prop for years, and that its very light weight wise.

I noticed that the way the prop is situated next to the light fixture, there seems to be a high shine on the " copper " metal sheathing. If indeed the patina had been preserved and not touched, then I assume there would not be such a high reflectivity, and if this is so, then the sheathing on the other blade tip at the bottom seems to not have the same high shine on it.

While I am no expert on the WW1 airscrews, the statememnt of it being " very light " just makes me wonder about the true origin of this prop. I would surmise that a prop of that size would have considerable heft to it.

Take a look on e-bay and you will see a lot of reproduction props that come from various foriegn islands from all over the world, most are obvious that the shape tells the tale, and the price as well, often well below what a real prop should sell for. But that is just my observation. It will be interesting to see the forthcoming photos that you will provide to show more detail on this particular prop you possess.

The elder statesman of the WW1 time period, ( Mr. Bob Gardner ) of props and his endless accurate list's of incredible information, in my opinion will tell the tale of if its real or something else.

Thanks for posting the current picture.

Sincerely,
Dennis Hicklin
Seattle Washington
Attached Images
File Type: gif PAAlogo.gif (7.7 KB, 77 views)
File Type: jpg B 36.jpg (100.9 KB, 4 views)
File Type: jpg ball graphics card.jpg (74.7 KB, 2 views)
D.Hicklin is offline   Reply With Quote
Old 04-23-2013, 12:02 PM   #7
doycowz
 
Join Date: Apr 2013
Posts: 7
Default Huge wooden prop

Hey guys I am back with some pics,,, I could not find any markings or serial numbers,,,,tell me what u think even if u hurt my feelings,,

thanks
Doyle Cowart
Groves Texas
Attached Images
File Type: jpg IMG_7757.jpg (61.3 KB, 18 views)
doycowz is offline   Reply With Quote
Old 04-23-2013, 06:55 PM   #8
pmdec
 
Join Date: Nov 2006
Location: France
Posts: 441
Default

Hi,
Could you post pictures of the other three sides of the hub, even without any marking (clear close up and no flash please) and a close up of part of the shielding showing two or three rivets and the edge?
Which is the size of the central hole and the exact length of the prop?
Which kind of wood do you think it is made?
Regards,
PM
pmdec is offline   Reply With Quote
Old 04-24-2013, 06:23 AM   #9
Bob Gardner
Moderator
 
Bob Gardner's Avatar
 
Join Date: Jan 2006
Location: The North of England
Posts: 1,466
Default

'Morning Everyone,

It is a most unusual propeller and one of the most interesting to have surfaced on our forum. As Dave says, it does have an early look to it.

Copper was occasionally used for sheathing but it oxidises to a green copper oxide quite quickly. The style of the sheathing looks to be of British design, patented in Britain in 1912-ish by Dashwood Lang and introduced to America when he was imported to advise the USN in 1917.

Early props had six bolt holes for some time when transmitting 40 to 60 hp. Eight bolt holes began to be used once engines of 100hp and more came into use in Europe around 1915. The eight bolt holes on this prop run close to the edge of the hub, which suggests the hub was intended to have six bolt holes, not eight. The witness marks of the hub plate don't show any evidence of the typical circular cut-outs between the bolt holes to reduce the weight.

The wood looks like beech but might also be spruce, which was typical of early American props.

So the prop is a collection of contradictions; an early US shape suggesting a dirigible prop from 1910-1912; but with bolt holes and sheathing, in the European style from 1915-1918. It might well have been both of these things; an early prop recycled.

With kind regards,

Bob
__________________
Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
http://www.aeroclocks.com
Bob Gardner is offline   Reply With Quote
Old 04-24-2013, 06:29 AM   #10
Bob Gardner
Moderator
 
Bob Gardner's Avatar
 
Join Date: Jan 2006
Location: The North of England
Posts: 1,466
Default

An afterthought. I went back to studying the photo of the hub. There appear to be suggestions of six bolt holes which have been filled with dowelling; at the eleven o'clock and six o'clock positions. And by extrapolation I think I can see traces of five of the six.

If so, this is likely to be an early American prop c1912 or so. At this time American aviation had not advanced much and there were few makers, so a search of photographs of US aircraft types from this time might reveal this shape of propeller?

Bob
__________________
Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
http://www.aeroclocks.com

Last edited by Bob Gardner; 04-24-2013 at 06:42 AM.
Bob Gardner is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:53 PM.


Powered by vBulletin® Version 3.8.9 Beta 3
Copyright ©2000 - 2017, vBulletin Solutions, Inc.