Curtiss Propeller in Hawaii

[flyaloha]

Trying to decipher some history of a recent acquisition:
The following is stamped on the face of the hub...

Curtiss Propeller
#1082 Walnut
Part N.O. 047315
Liberty Engine 12 420 H.P.
Standing RPM 1415
Plane MB 28 NBS-1
ASNO. 110689

Prop diameter is 10', and it is 7" thick. 8 bolt holes, and has 10 sheathing scallops and a sheathed tip. Will add pictures soon.

Thanks,

Dave Parker
flyaloha@hawaii.rr.com

[Dave]

Dave,
Since we spoke on the phone I looked through some files I have and I think the "MB" stands for Martin Bomber.

The listing comes from a McCook field publication (1921) and that line reads:

Airplane: Martin Bom'r
HP Engine: Liberty 12
Propeller: 047315 (although the "3" is a little hard to read)
Blades: 2
Standing RPM: 1420
Approx Flying RPM: 1670
RHT (for "Right Hand Tractor")
Diameter: 10'4"
Pitch: 5.74'

We may be able to figure out the "28 NBS-1" Somehow it sounds familiar. Here's the plane, however:

[Dave]

The "NBS-1" stands for Night Bomber, Short Range and further indicates that the propeller was for the Martin Bomber with Liberty engines.

Here's a link to more information. They mention the use of several of those in Hawaii. With those as search terms I'm sure there's much more info available on the web. I think I have the Peter Bowers book on Curtiss aircraft (referenced in the link above) if you need me to look something up.


So when all is said and done, if the stampings can be construed to read "MB2/NBS-1" then it's almost certain it's a match. It should also be 10 feet, 4 inches in length.

[flyaloha]

Curtiss propeller restoration

searching for leading edge cladding and liberty hub to restore propeller and convert to a belt-driven ceiling fan. Stumped