Rudder Return Springs

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8393
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Rudder Return Springs

Post by 8393 »

Does anyone happen to have any idea what the lengths, thicknesses and spring rates of the rudder return springs are? I've recently found that my plane appears to not have the Cessna specified springs. The cable tension seems excessively low (to the point rubbing on a fuselage former) and the spring rates of the springs that are in the aircraft are not equal at rest causing the resting position of the rudder to be non-centered (without the tailwheel steering springs attached).
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8175
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Re: Rudder Return Springs

Post by 8175 »

How about this? Had to make it a Word File. Let me know if you have trouble downloading it and I will send you a copy off line.
Larry Lowenkron
C140A
N5641C
Rudder Ret Springs.docx
(153.18 KiB) Downloaded 747 times
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6298
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Re: Rudder Return Springs

Post by 6298 »

Interesting and informative document. The left and right springs are different lengths on my 140’s.
Randy Thompson A&P IA Pilot
Hold STC SA547EA for installation of O-200 engine in Cessna 120/140 and 140A"s
Overhaul small Continentals
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8175
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Re: Rudder Return Springs

Post by 8175 »

Yes, the overall length is different, the free length is the same.

Larry Lowenkron
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8393
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Re: Rudder Return Springs

Post by 8393 »

I couldn't have asked for anything better. Thanks!
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6277
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Re: Rudder Return Springs

Post by 6277 »

If I remember correctly, they are not all that easy to replace and quite expensive to buy.
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6277
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Re: Rudder Return Springs

Post by 6277 »

Springs are different for left and right. PN 0411837-1 and 0411837-2. Cost about $60 each.
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6643
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Re: Rudder Return Springs

Post by 6643 »

One rudder pedal shaft is forward of the other, so the springs have to be different lengths. The spring portion is the same on both so the tension is the same.
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Re: Rudder Return Springs

Post by wisethk »

Hi,

I am unable to read the diameter of the spring on the document. could someone tell me what the diameter is?

Thanks
Kurt
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8175
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Re: Rudder Return Springs

Post by 8175 »

See note 3 - ".051 music wire"
Larry Lowenkron
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