Wooden Propeller Forum  

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

Reply
 
Thread Tools Display Modes
Old 06-29-2018, 07:32 AM   #1
warhawk
 
Join Date: Jun 2018
Location: Philadelphia Pennsylvania
Posts: 2
Default PT-1 prop in hoarder’s basement!

PT-1 prop found in the basement of a gentleman who passed away. Info on the hub seems a little confusing the PT1 used an eight cylinder Hispano. Not a Wright of 198 hp. Does anyone have any info on this prop?317AC83A-CC1F-4E98-B773-5EC251428E00.jpg

4BECB472-082B-4DE9-8572-801A6EC2186B.jpg

60E0B9B3-DF6E-4102-B991-4FBBB2F37338.jpg

1D640E69-ECB0-44EA-A471-383BD5689987.jpg
warhawk is offline   Reply With Quote
Old 06-29-2018, 09:45 AM   #2
Dbahnson
Administrator
Site Admin
 
Join Date: Nov 2008
Posts: 694
Default

Horsepower often does not match what is stamped on the hub.

I know that Hartzell made some props for the PT 1, and I'll try to look through some of my materials to see what was stamped on theirs.

I did sell one (a scimitar shape) to some officer's or reserve's club that's near the Capitol building in Washington, DC. I believe it's hanging up there if you ever get to DC.
Dbahnson is offline   Reply With Quote
Old 07-03-2018, 08:49 AM   #3
warhawk
 
Join Date: Jun 2018
Location: Philadelphia Pennsylvania
Posts: 2
Default

Here it is on the PT1
Attached Images
File Type: jpg 2798CD64-BE2A-4752-93B6-07203084F923.jpg (69.4 KB, 4 views)
warhawk is offline   Reply With Quote
Old 07-03-2018, 08:58 AM   #4
Dbahnson
Administrator
Site Admin
 
Join Date: Nov 2008
Posts: 694
Default

So I think the stamping of "Wright" can be misleading, particularly if you try to match the horsepower with an engine specification. Wright manufactured Hisso engines with their name, and various models of the Wright-Hispano-Suiza had horsepower ratings ranging from 150 HP all the way up to 375 HP. (NASM link.)

The Cyclone was a different beast altogether, but also built by Wright.

I've seen a number of propellers of all types stamped with horsepower that didn't match the specification sheets, some of which were amended at a later date, long after the prop had been manufactured. See also this link to get some idea of the multiple variations of the basic Hisso design.

Your propeller is pretty well established as matching that aircraft, IMHO.
Dbahnson 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 03:13 AM.


Powered by vBulletin® Version 3.8.9 Beta 3
Copyright ©2000 - 2018, vBulletin Solutions, Inc.