Zero Propeller Question

[Jim MacDonald]

Can anybody tell me the length of a single propeller blade from an A6M2-21, A6M3-22/32 and of one from an A6M5. I know the diameter of the props, but I'm looking for the length of single blades.

TIA,

Mac

 

[Michael Hope]

I do not know the exact length.
The length of a single blade would one half of the diameter when installed in the propeller, i.e. the radius. The blade removed from the propeller/hub you would take off two to three inches as a guess based on other propellers manufacturers.

 

[Shinpachi]

As far as I have researched in the net, same Sumitomo-Hamilton Ki-43-II propeller blade length is 1,340mm and this was 50mm shorter than the A6M2's.
I see it 1,390mm or roughly 1,465mm for A6M3/M5 if the hub was not enlarged.

Ki-43-II blade

Source: 『貴重 一式戦闘機二型 キ43-II【隼】プロペラ 1... - Yahoo!オークション

 

[SaparotRob]

What a cool thing to have around the house!

 

[pbehn]

What a cool thing to have around the house!

Ideal for beating carpets, paddling canoes even the odd game of cricket for extremely tall house owners.

 

[SaparotRob]

Don't forget the cauldron!

 

[pbehn]

Don't forget the cauldron!

Thats a great shout, you work on another level.

 

[Michael Hope]

As far as I have researched in the net, same Sumitomo-Hamilton Ki-43-II propeller blade length is 1,340mm and this was 50mm shorter than the A6M2's.
I see it 1,390mm or roughly 1,465mm for A6M3/M5 if the hub was not enlarged.

Ki-43-II blade
View attachment 768833
Source: 『貴重 一式戦闘機二型 キ43-II【隼】プロペラ 1... - Yahoo!オークション

Based on the Hamilton Standard E shank blade and 3E50 propeller the blade butt would be 2.938 inches out from the center of the propeller rotation, so add 74.62 mm to the length of the blade as it stands, then double it, would get you full diameter of the propeller.

 

[Jim MacDonald]

Thanks for the info Shinpachi and Michael.

Mac

 

[GregP]

The Planes of Fame has an A6M5 Model 52, but nobody is going to disassemble it to measure the single-blade length!

 

[SaparotRob]

I got a rifle. I can help stand watch.
Full disclosure: my ex-wife threw the bullets away years ago.

 

[GregP]

Actually, the Sumitomo blades, hub, and everything are copied and license-built. They are basically Hamilton-Standard items. But, I am not sure of the H-S blade number and hub number that were legally licensed by Mitsuibshi before the war.

 

[Jim MacDonald]

Thanks for the info, Greg. I wonder if Legend Flyers would be able to answer that question since they were going to use an original engine in their A6M3-32.

Mac