Propeller ID

[WillDelamore]

Hi
I have a propeller on a wall that I bought 20 years ago at an auction.
8 bolt holes
G.27.N51
On top of hub:
A.B or A D. 555.B.R.H.
130. HP CLERGET engine?
D. 2590
P. 2620
It also has C41 stamped on it
Any ideas?
Cheers
Will

[Bob Gardner]

Welcome to the Forum Will,

Your prop is quite rare and interesting. It was made for a variety of aircraft including the Avro 504, Nieuport Baby and Sopwith Baby. The drawing number was originally an Admiralty drawing number (AD) but was taken over by the Air Board (AB) in mid 1917 when the Air Board was set up to bring the Royal Air Force into existence in 1918.

I am inclined to think yours would be for a Sopwith Baby or its variants such as the Hamble Baby etc. The aircraft was a military version of the Sopwith Tabloid that won the Schneider Trophy in 1914. It was used by the RNAS.

G.27.N51 Prop number 51 in the batch called G27. This dates it to mid 1917
A.B or A D. 555B R.H.The drawing number of the second version of this prop. RH indicates right hand rotation.
130. HP CLERGET The uprated Clerget engine used on later models
D. 2590 Diameter in mm
P. 2620 Pitch in mm
It also has C41 stamped on it I don't know.


With kind regards,

Bob

[WillDelamore]

Hi Bob,

Thanks very much for this great information very exciting. I want to but a couple of good pictures of the plane it would have been used on.
Cheers
Will

[Bob Gardner]

Will,

I'm not aware of anyone who sells them. You might wish to consider googling the Sopwith Baby, finding a good photograph, copying it and printing it from your computer onto photograph paper.

Good Luck!

Bob