Propeller query

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What are the options - if indeed there are any at all - for sourcing and obtaining a steel two bladed pusher propeller of precisely 2.35m in diameter? The propeller wouldn't need to be airworthy as such but would need to be operational.

Any advice or pointers would be gratefully received

Thanks

Original post
Profile picture for user Anon

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12 years 1 month

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Why does it have to be steel, jeepman?

Anon.

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It's just that that's what the original was.

Just musing about a reproduction project but if I can't source a propellor of the right size and appearance then there's no point in pursuing any further. There would probably need to be other compromises due to the difficulty of obtaining parts but the appearance of the propeller seems pretty well fixed.

Profile picture for user Anon

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Have you got more details, i.e., was it a fixed-pitch propeller or a one-piece unit?

Was it originally specially made? Do you have a photo of the original you could post?

Anon.

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It's for a possible reproduction of the RF-8 Aerosan

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That looks interesting.

Seems like it has either a VP or a pitch-adjustable prop. Either way, it's a hub with separate blades. How do you know that the blades were made of steel, jeepman?

Anon.

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The Gaz 98/ RF-8 used a steel propeller for durability whilst most of the other Aerosans used wooden propellers. When the RF-8 was redesigned to use the M-11G radial engine (as used in the Po-2) and redesignated Gaz 98K a wooden propeller was fitted. The Gaz98 was powered by a Gaz M-1 engine - which was a standard automotive unit based on a 4-cylinder Ford Model A design.

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I can understand the need for a stronger prop as snow and other stuff would end up going through the prop and would soon damage anything less durable. It's probably an aero hub with some specially made blades.

Would the blades be for a runner, or just a static example?

Anon.

Profile picture for user jeepman

Member for

15 years 10 months

Posts: 1,929

I can understand the need for a stronger prop as snow and other stuff would end up going through the prop and would soon damage anything less durable. It's probably an aero hub with some specially made blades.

Would the blades be for a runner, or just a static example?

Anon.

Hopefully a runner - although there's the little issue of a 6:1 reduction gearbox to overcome first............