2 Blade prop

wolfy

Gold Supporter
Joined
Dec 19, 2013
Messages
800
Location
western australia
I am fascinated with trying a two blade prop on my new gyro.
Given that most of the vibration is on two blade props on a tractor with the 2 per rev pulse hitting the windscreen and buffeting the whole airframe.
Naturally we won't have that on a pusher, so is the problem less severe on a pusher?
So long as I can find a prop that can soak up 120hp with only 71" diameter, I would like to try.
From the little that I have read so far it seems the 2 per pulse is still a problem on pusher gyro's, What are your thoughts?

wolfy
 

Jean Claude

Junior Member
Joined
Jan 2, 2009
Messages
2,285
Location
Centre FRANCE
Aircraft
I piloted gliders C800, Bijave, C 310, airplanes Piper J3 , PA 28, Jodel D117, DR 220, Cessna 150, C
Total Flight Time
About 500 h (FW + ultra light)
I don't see any more vibration problems for a two-bladed propeller than for a three-bladed one when both are pushing axially. Neither for the tractor nor for the pusher.
Here La Cierva, Pitcairn
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meglin

Newbie
Joined
Feb 5, 2016
Messages
99
Location
Kharkov
No problem with the 2-blade propeller for the engine of the specified power. What are the revolutions? What is the gear ratio of the gearbox?
Best regards, Vladimir Meglinsky
My site: http://propeller.simplesite.com/
 

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meglin

Newbie
Joined
Feb 5, 2016
Messages
99
Location
Kharkov
We also make such propellers. But now we will not accept orders yet.
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giro5

Senior Member
Joined
Mar 19, 2006
Messages
1,247
Location
Farmington, New Mexico
Aircraft
prev- citabria,AA1b, fun racer
Total Flight Time
400 GA, 50 trike
I don't think Culver props bought Tennessee prop but last year there was a show on TV about a girl who had taken over Culver props and she was making wooden props (she loads a pattern prop into a machine and it makes the props after she glues up the blanks). In another post on the forum someone had contacted her and she had indicated she would make a prop for a MAX i think for 350 or 400 dollars.
 

giro5

Senior Member
Joined
Mar 19, 2006
Messages
1,247
Location
Farmington, New Mexico
Aircraft
prev- citabria,AA1b, fun racer
Total Flight Time
400 GA, 50 trike
The other thread where Culver prop was mentioned is under Bensen style, MAC 72 prop
 

TJPUMPHREY

TJGYRO
Joined
Dec 5, 2012
Messages
200
Location
Erlanger, Kentucky
Aircraft
C-172,C-152-C150, Twinstar gyro
Total Flight Time
490
I don't think Culver props bought Tennessee prop but last year there was a show on TV about a girl who had taken over Culver props and she was making wooden props (she loads a pattern prop into a machine and it makes the props after she glues up the blanks). In another post on the forum someone had contacted her and she had indicated she would make a prop for a MAX i think for 350 or 400 dollars.
What I am interested in is Tennessee Propeller's equipment, templates and inventory. I am sure I would not be able to afford it, but you never
know. I can't imagine if they were out of business for good that they would not sell off the equipment, templates and inventory.
I am familiar with the girl with Culver props. She has videos all over youtube. She learned that trade from her grandfather.
 
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