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  • February 27, 2021, 11:12:08 AM

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Author Topic: Bellcrank movement  (Read 522 times)

Offline Casey

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Bellcrank movement
« on: September 06, 2020, 10:12:39 PM »
What is the effective movement range in degrees for a 2 inch bellcrank in a Nostalgic combat model?


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Offline john e. holliday

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Re: Bellcrank movement
« Reply #1 on: September 07, 2020, 11:43:24 AM »
I have never used a 2 inch bell crank in the old combat planes.  In that period of time it was the Veco 3 inch.  Also used what area the space between ribs allowed.   The control horn is where I adjusted for elevator deflexion. D>K
John E. "DOC" Holliday
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Online Motorman

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Re: Bellcrank movement
« Reply #2 on: September 07, 2020, 03:43:35 PM »
I would stay with a 45 degree max each way.
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Online Paul Smith

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Re: Bellcrank movement
« Reply #3 on: September 12, 2020, 07:31:56 PM »
I would stay with a 45 degree max each way.

That's a good number for ANY crank arm mechanism.  Beyond 45 degrees each way, 90 degrees total, the actual output is minimal.
Paul Smith

Offline phil c

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Re: Bellcrank movement
« Reply #4 on: November 22, 2020, 06:00:34 PM »
+/- 45 is about right.  I used that on quite a few  Fast combat planes 1992-2002.  Pushrod in the inner hole.  The balance point was far enough back to make it responsive.  It allowed me to put the bellcrank on the boom and still clear a bladder tube behind the spars, pretty much on the CG.
It worked quite well.
phil Cartier


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