Balancing flight controls

How to keep the Cessna 170 flying and airworthy.

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Curtis Brown
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Balancing flight controls

Post by Curtis Brown »

The paint shop sent me an email asking for balancing spec for the 170 flight controls. Where can I find this info.
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GAHorn
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Post by GAHorn »

From Cessna , SNL 86-44: For the 170 B-model only:

Aileron Balance wt: 2.94 lbs, +0.06 -0.0 lbs, moment 0.0 to +11.31 inch lbs.
Rudder Balance wt: 4.0 lbs, +0.12 - 0.0 lbs, moment, +23.0 to +27.0 inch lbs.
RH Elevator Balance wt: 0.92 lbs, +0.10 -0.10 lbs, moment +22.0 to +26.0 inch lbs.
LH Elevator Balance wt: 0.75 lbs, +0.10 - 0.10 lbs, moment +19.44 to +24.0 inch lbs.
Last edited by GAHorn on Thu Feb 26, 2004 7:59 pm, edited 1 time in total.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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Curtis Brown
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Post by Curtis Brown »

So George, those number are for B models. I have an A model SN19810. A and B specs are different? Paint shop just called me on phone looking for specs. Shouldn't they have that info handy....
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GAHorn
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Post by GAHorn »

For the 170 A-model only:

Aileron Balance wt: 2.94 lbs, +0.06 -0.0 lbs, moment 0.0 to +11.31 inch lbs.
Rudder Balance wt: 4.0 lbs, +0.12 - 0.0 lbs, moment, +23.0 to +27.0 inch lbs.
RH Elevator Balance wt: None Specified, moment 0.0 to +67.3 inch lbs.
LH Elevator Balance wt: None Specified, moment 0.0 to 44.0 inch lbs.

This info is from Cessna Service News Letter SNL 86-44.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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Curtis Brown
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Joined: Tue Apr 23, 2002 3:47 pm

Post by Curtis Brown »

Thanks George, I'll send it to 'em. :D
Why are the elevator specs so different from A to B :?
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mrpibb
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Post by mrpibb »

They changed to a counterweighted elevator on the later models for that fluffy light feel. :wink:
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GAHorn
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Post by GAHorn »

Curtis Brown wrote:Thanks George, I'll send it to 'em. :D
Why are the elevator specs so different from A to B :?
Because I said so.


(think about it re: recent msgs) :lol:
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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