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klondike(at)megalink.net
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 Posted: Wed Sep 16, 2009 11:14 am Post subject: Aileron Servo Boost? concentric bellcranks |
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don't know anything about this--- just wondering "what if the aileron
bellcrank was eccentric instead of concentric"???? I would like to
learn ----- why do some airplanes have eccentric aileron belcranks and some
have concentric aileron bellcranks. Please don't "flame"---- just
wondering.
Fritz---- do not archive
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psm(at)att.net
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| Posted: Wed Sep 16, 2009 12:20 pm Post subject: Aileron Servo Boost? concentric bellcranks |
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Hi Fritz,
I think the eccentric aileron bellcrank design is an attempt to
reduce adverse yaw in turns.
Paul
XL awaiting engineering changes
At 12:04 PM 9/16/2009, you wrote:
| Quote: | don't know anything about this--- just wondering "what if the
aileron bellcrank was eccentric instead of concentric"???? I would
like to learn ----- why do some airplanes have eccentric aileron
belcranks and some have concentric aileron bellcranks. Please
don't "flame"---- just wondering.
Fritz---- do not archive
|
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klondike(at)megalink.net
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| Posted: Wed Sep 16, 2009 2:19 pm Post subject: Aileron Servo Boost? concentric bellcranks |
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thank you
Fritz do not archive
---
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rtdin
Joined: 16 Mar 2008
Posts: 46
Location: Florida panhandle
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| Posted: Wed Sep 16, 2009 3:26 pm Post subject: Aileron Servo Boost? concentric bellcranks |
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That's how you make differential ailerons. More up range than down. A Zenith is a straight 11.5 deg up and 11.5 down. If you like the handling and there is not too much adverse yaw, you should leave it alone. Some designers make it so you can bank without rudder input and they mount the bellcrank aft end more outboard, fwd end more inboard. Sketch it out with full control throws and it will make sense to you. Make a paper mock up with pins. They sometime rake the aileron horn fwd a little and that has the same effect. Or maybe its raked aft, I forget.
Good question.
Bob Dingley
601XL 6-6791 [quote][b]
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