Avro 504 K Prop

[chris.woolley]

Hi Everyone.
I have some WW1 era wooden props.
I would like more info on the AVRO 504 K prop i have if anyone would be good enough to oblige.
The numbers on the boss are as follows:

GA 365 24
DRG. F23937 / 1 RH
AVRO 504 K
MONO GNOME ENG
D 90 PG 8
11 / 25

Its in good condition. I will post a pic soon if it helps.

Regards,
Chris W.
Shropshire.

[MWP_Lamar]

Looks like you already know about all there is to know about your prop. What additional info do you seek?

Lamar

[chris.woolley]

Thanks Lamar.
I was wandering what the significance of the serial numbers were on the hub, for instance are the last numbers "11 / 25" the date of manufacture.
Also the leading edge of the blades for most of the props length are covered in copper sheathing. I take it this sheathing was to protect the wood from water erosion when flown in rain and to give a little stone protection.

The prop is 9 feet long which is causing me problems as its living on the bedroom floor "wrapped up" after a house move and much to the other halfs annoyance.

There are 2 other props. A spad 7 and a dolphin.


Regards,
Chris W.

[Bob Gardner]

Good Morning Chris and welcome to the forum.

Your prop is from the Avro 504K, which was the RAF's basic trainer from 1917ish until the 1930's.

Your data translates as;

GA 365 24 I don't know. It might be G4365 N24, which would indicate a batch number of 100, of which yours is no. 24.

DRG. F23937 / 1 RH The drawing number and direction of rotation

AVRO 504 K The aircraft type

MONO GNOME ENG The French rotary engine, the Monosoupape made by Gnome-Rhone

D 90 PG 8 Diameter and pitch in feet

11 / 25 Date made.

I would be interested to hear the markings on your other two props.

With kind regards,

[Bob Gardner]

Postscript. Yes! Please post pictures of the three props

Bob

[chris.woolley]

Postscript. Yes! Please post pictures of the three props

Bob

Thank you for the information Bob.
I will post pics of all 3 very shortly for you.

The Markings on the Sopwith Dolphin prop are as follows:

Sopwith Dolphin
DRG-L 5060
200 HP HISPANO SUIZA

Both the Dolphin and the Spad 7 prop are in exellent condition.
The Avro is in very good condition also.
The Spad is still wrapped up and packed at the moment but as soon as they are all unpacked i will post the pics for you.

Regards.
Chris W.

[Bob Gardner]

Thank you Chris,

Your Dolphin prop was made by the Lang Propeller Co in 1918, by which time Sopwith had bought the company from Dashwood Lang and it had become, in effect, Sopwith's in-house prop shop. This prop, LP5060 (Lang often shortened this to L5060) was the standard prop for the Dolphin from Feb 18 onwards. The diameter was 2590mm and the pitch was 2150mm, although the prop was also made at first with a pitch of 2240mm.

See if you can see any AID stamps on it. These are airworthiness stamps about the size of your little finger nail, often found in a group of four. If you can read the numbers under AID, please tell me for my database. And similarly if there is a G and N number, for example G875 N72.

With kind regards,

Bob

[chris.woolley]

Thank you Chris,

Your Dolphin prop was made by the Lang Propeller Co in 1918, by which time Sopwith had bought the company from Dashwood Lang and it had become, in effect, Sopwith's in-house prop shop. This prop, LP5060 (Lang often shortened this to L5060) was the standard prop for the Dolphin from Feb 18 onwards. The diameter was 2590mm and the pitch was 2150mm, although the prop was also made at first with a pitch of 2240mm.

See if you can see any AID stamps on it. These are airworthiness stamps about the size of your little finger nail, often found in a group of four. If you can read the numbers under AID, please tell me for my database. And similarly if there is a G and N number, for example G875 N72.

With kind regards,

Bob

Hi Bob.
More info on the Dolphin prop for you.
Near the front of the boss is a circular stamp with the number E2 within it.
In the square stamp. Actually 4 very close togerther the nimbers AID 558 can be clearly read.
Also on the top of the boss are the numbers as follows:
D.2590
GUN TIMING
P.2240
4272
93.N39

The numbers off the Spad 7 prop are as follows:

SPAD 7
ETOILE
Dg AB 767 RH
HISPANO SUIZA
D2414
P1710
and a stamp with 066 near the boss.

Bob.
Both of these props are in very good condition and if you wish i can picture message you some pics.
Im on another computer at present as my own is playing up.

eMail removed by moderator to safeguard it from Spambots.

Regards.
Chris Woolley.