Fahlin D-791

Wincharger Mike · 11-06-2020, 09:21 AM

Can you tell me the plane and engine for this prop. I didn’t see it listed on your Fahlin webpage. Also, why did they get chopped off? Prevent use when damaged? Great website.
Thx

Dbahnson · 11-06-2020, 10:25 AM

That's a "test club" and nothing has been chopped off. It is used to provide drag on an engine being run on a test stand and is purposely inefficient, as you'll notice that the blades are a fixed angle rather than changing pitch along the blade, as all aircraft mounted props do.

It's stamped for the Continental R 670 engine and is not specific to any aircraft make and model, just the engine itself.

Wincharger Mike · 11-06-2020, 10:37 AM

Interesting, thanks for the quick reply. Any idea year it’s may have been used?

Dbahnson · 11-06-2020, 12:13 PM

No, I don't. It was likely manufactured in the 40s or 50s and could conceivably still be used, since I don't think it has to be airworthy for its purpose as a test club.

Wincharger Mike · 11-06-2020, 12:19 PM

Thanks

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11-06-2020, 10:25 AM	#2
Dbahnson Administrator Site Admin Join Date: Nov 2008 Posts: 1,364	That's a "test club" and nothing has been chopped off. It is used to provide drag on an engine being run on a test stand and is purposely inefficient, as you'll notice that the blades are a fixed angle rather than changing pitch along the blade, as all aircraft mounted props do. It's stamped for the Continental R 670 engine and is not specific to any aircraft make and model, just the engine itself.

11-06-2020, 10:37 AM	#3
Wincharger Mike Join Date: Oct 2015 Posts: 9	Interesting, thanks for the quick reply. Any idea year it’s may have been used?

11-06-2020, 12:13 PM	#4
Dbahnson Administrator Site Admin Join Date: Nov 2008 Posts: 1,364	No, I don't. It was likely manufactured in the 40s or 50s and could conceivably still be used, since I don't think it has to be airworthy for its purpose as a test club.

11-06-2020, 12:19 PM	#5
Wincharger Mike Join Date: Oct 2015 Posts: 9	Thanks