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Thunderbolt Research Centre
Research, Restoration, and other topics related to non-modeling aspects of P-47 history.
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P-47 Propeller types
lampie
#029
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England - East Midlands, United Kingdom
Member Since: December 23, 2005
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Posted: Saturday, November 08, 2008 - 01:25 PM GMT+7
Towards the end of the old SIG thread Tomcat31 asked which prop would be appropriate for his latest P-47. Four different types of prop are to be found on P-47's.
Kits such as the 1:32 Hasegawa P-47M and the Tamiya P-47M include all four types, and the AM manufacturers have resin replacements on offer in most scales if your kit doesnt include the correct type prop for your plane.

Heres a quick rundown of the four different types. Its NOT a definitive guide to P-47 propellers. Golden rule as always is check your references for the individual T'bolt your building.Part numbers given are for the Tamiya P-47M kit.

Early P-47's ( C's and D's) were factory fitted with the 12' Curtiss propellor.
(B32+B33) Easy to distinguish by the thin tapered blades and the standard Curtiss pointed propeller boss. Nicknamed "The Toothpick" due to its shape.
Heres an example fitted to a P-47D-1-RE.


The thin blades restricted the P-47's already low rate of climb, and the introduction of the wider bladed (paddle blade) 13' Curtiss prop went a long way to improving the Thunderbolts performance.(B34+B35)
Many if not all of the 12' Curtiss P-47's were fitted with this new propeller. In the case of the 56th FG all their P-47's had apparently recieved the paddle bladed prop by late December 1943/Jan 1944
Heres an example of the paddle bladed Curtiss on a P-47D-10-RE


Another paddle blade propeller fitted to some batches of P-47 was the 13' Hamilton propeller. (B36+B37)
Easily distinguishable by the stubby propeller boss and the thin base of the blades. The D-25(first Bubbletops) batch is often quoted as being the first batch fitted with the Hamilton propeller, but heres an example fitted to a D-22-RE Razorback.


The last of the four is the 13' Curtiss Asymetrical Propeller.(G5+G6)
The distinctive shape of the blades makes this one stand out from the other Curtiss props.
Heres two examples fitted to D-28-RA's.


I've seen reference to the D-28-RE batch being fitted with the Curtiss Paddleblade and the D-28-RA having the asymetric prop.

One often quoted "fact" is that the Curtiss Asymetric prop was only fitted to the P-47M.
As you can see from the photos of D-28 examples this isnt the case. Indeed, the P-47M wasn't fitted with the asymetric prop at all, but the Curtiss paddleblade, as this photo of Major Mike Jacksons "Teddy" shows.


So there you go, a pocket guide to P-47 propellers.As I said at the beginning, this isnt intended to be a definitive guide in any way shape or form, it's more a general guide showing the difference between the four types of prop.
Check your references
Hope this helps.
Nige
calvin2000
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Posted: Sunday, November 09, 2008 - 09:43 AM GMT+7
Good introduction to props I know with the Hamilton standard I look for the nut in the center of the hub if in doubt here are some good pics of that. http://www.ipmsstockholm.org/magazine/1999/01/stuff_eng_detail_p47.htm
Thanks,

Kelly
Tomcat31
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Posted: Sunday, November 09, 2008 - 12:03 PM GMT+7
Damn Nige beat me to it again

Here's some plan views of the props while I was researching the question I originally asked, Hope these help as well.

Hamilton Standard Blade


Curtis Standard Blade


Curtis Asymmetrical Paddle Blade


Curtis Symmetrical Paddle Blade


lampie
#029
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Posted: Sunday, November 09, 2008 - 04:44 PM GMT+7
Great Hamilton photos Kelly, thanks for those
Nice one Allen.
Photos and plan drawings of each type of propeller.
Job done
Nige
jguignard
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Posted: Saturday, August 22, 2009 - 07:55 PM GMT+7
Actually, operational P-47's had one more style of prop. The P-47M and N used the same prop - it had symmetrical paddle-blades, but it was not the same as used on the P-47D.

The prop used on the P-47D had cuffs with parallel edges, while the prop used on the P-47M and P-47N had cuffs with tapered edges, with the widest point of the taper at the hub.

See the below photos (if they show that is !). Note the 353rd FG P-47D prop cuffs as compared to the P-47N. The P-47M was basically a D30 airframe with the same engine and prop as used on the P-47N.

P-47D:
Photobucket

P-47N:
Photobucket
Qumonon
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Posted: Monday, April 03, 2017 - 01:19 AM GMT+7
I think this device has a special type of propellers! thanks for the photo attaching! http://bigpaperwriter.com/blog/a-long-way-gone-essay will tell you about a Long Way Gone!