Prop blade id

jay62 said:

Hello, a another one to id.

No clud for this one...

thank a lot for you help !

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jay62 said:

The base looks quite small, so I'm thinking it's a two- or three-bladed propeller, fairly light, like on a reconnaissance or interwar aircraft, given the state of corrosion on the blade.

Does anyone have any idea what propellers a Noorduyn Aviation Norseman might have?

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Michael Hope said:

The Norseman used the Hamilton Standard 3D40, or a 12D40.

The image of the blade butt shows a brass/bronze type internal plug, but it is large in diameter to be from a Hamilton Standard blade. Below is a cut away, which shows the blade, bronze blade bushing and the steel spider arm. The end of the threaded balance plug is seen in the center.
View attachment 855073

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Michael Hope said:

The Norseman used the Hamilton Standard 3D40, or a 12D40.

The image of the blade butt shows a brass/bronze type internal plug, but it is large in diameter to be from a Hamilton Standard blade. Below is a cut away, which shows the blade, bronze blade bushing and the steel spider arm. The end of the threaded balance plug is seen in the center.
View attachment 855073

Click to expand...

Engineman said:

Hi,

Unfortunately, you are getting so far away from identifiable features that it may be impossible to even group that blade.
You might, possibly, have some sort of blade shape at the lower area, but really, it is so badly corroded that it looks unlikely that original profile remains?
It does look as though you only have the alloy material and a steel insert to bank on.
Good luck. It is just possible that the form and size of the steel insert is individual enough to group the blade.

Cheers

Eng

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