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Old 02-15-2020, 03:01 PM   #1
Utahraptor
 
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Default M FARMAN Wooden propeller

Hi all. First time on forum. I wondered if anybody could help me identify a wooden propeller hub. It says on it:-
DG 2303
HP 80 REN
M FARMAN
B 24722

If anybody shed any light on this I would be most grateful.
Thank you.
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Old 02-15-2020, 11:17 PM   #2
Dbahnson
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I'll try to look up that drawing number when I get home and can access my files.

Bob Gardner has a way of beating me to it . . .
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Old 02-16-2020, 02:53 AM   #3
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Default M FARMAN Wooden Propeller

Dbahnson,
Thank you for your help. I forgot to mention that it has the letters at the beginning:-
I P C
Also there is on the hub a small like arrow pointing to the letters W D
I donít know if this is of any further help.
Again, Iím most grateful if you, or anybody else, could shed any light on this propeller.
Thank you.
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Old 02-16-2020, 06:43 AM   #4
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Dave,

I apologise for beating you to it! Shall I enforce a twelve-month sabbatical for myself?

The data on this prop is only partial, which is typical of early WW1 props. The full data would read as;

IPC
LHP
D2900
P2620
B242772

IPC; The integral Propeller Company, the British subsidiary of the French Integrale Propeller Company.
LHP; the configuration of the prop, left hand rotation for a pusher prop.
D2900; prop diameter in mm.
P2600; pitch of the propeller.
B242772 the drawing number, where I believe the letter B indicates Made in Britain

This type of aircraft was a two seater used by the British Royal Flying Corps.

Dave, I realise that I have been spoiling your fun and I do apologise. This has come about because Great Britain is several hours ahead of US time. I propose that in future I shall defer answering any posts until after mid-day?

With kind regards,

Bob
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Last edited by Bob Gardner; 02-17-2020 at 04:37 AM.
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Old 02-16-2020, 06:46 AM   #5
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Ah ! A postscript WD indicates the British War Department.

BobG
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Old 02-16-2020, 09:05 AM   #6
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Quote:
Originally Posted by Bob Gardner View Post

Dave, I realise that I have been spoiling your fun and I do apologise. This has come about because Great Britain is several hours ahead of US time. I propose that in future I shall defer answering any posts until after mid-day?

With kind regards,

Bob
Bob, I'm delighted that you responded quickly. I just got back from California, another 3 hours further west of Great Britain than Vermont, and I flew the red-eye to get here, so I'm headed .off to bed before I do much of anything else.
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Old 02-16-2020, 01:26 PM   #7
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Sweet dreams, surgeon!

Bob
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Old 02-16-2020, 01:48 PM   #8
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Thank you very much indeed for all your help and information Bob. I know Iíve asked a lot already but could you please tell me length of the propeller and also what speed the plane would be able to do? I donít suppose youíd have a picture of the type of plane it is? Again, thank you very much indeed for all your help and information.
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Old 02-16-2020, 01:57 PM   #9
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Bob, where abouts in the north of England are you, if you don’t mind me asking? I’m from Hull. Regards Phil.
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Old 02-16-2020, 03:05 PM   #10
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Quote:
I know Iíve asked a lot already but could you please tell me length of the propeller and also what speed the plane would be able to do?
Length of the propeller = diameter = 2900 mm

Early M Farman planes were quite slow with top speed of around 95 - 100 km/h
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