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rotor head thickness

Old 10-17-2009, 11:41 AM
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Default rotor head thickness

Hi everybody,
My name is Jérôme and I am a new "gyronut".
I'm building a Cierva C-30 gyro, made with Eduardo Pinilla's plan (aerotech magazine), with some modifications (increased rotorspan, simplified hub/rotor head, ASP 70 FS engine and aerobalsa blades).
I would like to use same hub as the Kellet of Arizona Company: a simple fiberglass delta. so my question is what is the thickness and dimension of this fiberglass hub?
Thanks a lot for helping me.
I will post some pictures when the gyro is finished.
Jérôme
Old 10-19-2009, 02:23 PM
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Default RE: rotor head thickness

I would use about 1/8 " fg.. That is the size that A of A use.. Thats what I use on my bigger Autogyro's.

Jim
Old 10-19-2009, 02:50 PM
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Default RE: rotor head thickness

I have 1/8" plate of fiberglass, and it seems very very stiff. I don't mind how the blade can flex the plate. I have 1/16" plate too, and the flexibility is quite good. Is this thickness good for a 67" rotorspan?
Jérôme.
Old 10-22-2009, 06:04 PM
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Default RE: rotor head thickness

Jerome,
Like I said before I would and I use the 1/8" plate. On 50" blades .Your blades will flex some.

Jim
Old 10-30-2009, 03:28 PM
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Default RE: rotor head thickness

OK thank you Jim. I will try 1/8" hub.
Jérôme

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