Rudder Attachment Bolts

How to keep the Cessna 170 flying and airworthy.

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GAHorn
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Joined: Fri Apr 12, 2002 8:45 pm

Re: Rudder Attachment Bolts

Post by GAHorn »

Poncho73 wrote:Like the original posters, it’s a 48. S/N 18573, sorry didn’t include that, just replied to the first post. I will post the part number later.
AS you search for the parts you request…you’ll see why it’s difficult to assist…. as you request a lower rudder “bearing” (Fafnir SIK-5…??) and “bushing”…??? huh..??? (pg 34, fig 13, item 14.?)
'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. ;)
DWood
Posts: 526
Joined: Sun Oct 10, 2004 2:59 pm

Re: Rudder Attachment Bolts

Post by DWood »

Poncho73
The lowest one of the 3 bearings is pn A-325-1 or A325-1 as in this post which might help you.
viewtopic.php?f=2&t=2271&start=0
In that post it is stated as follows:
"The original bearing PN A325-1 (superceded to S1003-11A) lists for $10.70"
48 170 IPC page 38 figure 20 items 70, 71

Edit: It might be this one and you should verify with McFarland
https://www.mcfarlaneaviation.com/produ ... S1003-11A/
and the bushing
https://www.mcfarlaneaviation.com/produ ... C0431119K/
Also available at Aircraft Spruce
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Poncho73
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Re: Rudder Attachment Bolts

Post by Poncho73 »

Thanks
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ghostflyer
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Re: Rudder Attachment Bolts

Post by ghostflyer »

This is for the benefit of Gobrien with the rudder hitting the vertical fin at the top. When the situation you have with the interference of rudder mass balance weight touching the fin is a indication that this rudder was fitted to a aircraft that been on its back. Rudders go from one aircraft to another over the years . I also would be measuring the clearance of the rudder to the vertical fin near the hinge points . I would push the rudder over until it hit the stops and measure the gap between the trailing edge of the fin and the leading edge of the rudder . I would get this dimension correct and make sure there isn’t any binding on rudder movement and check the clearance gap between rudder and fin at the top. If it still interferes it will be a case of deriviting the forward section of the rudder and repositioning .it. I would make up a right angle jig and attach the parts to that before riveting back together .
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gobrien
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Re: Rudder Attachment Bolts

Post by gobrien »

Thanks Ghost,

I rebuilt the rudder, made new sides for the top section which contains the mass and squared it off. I found apprentice marks all up in there, it had been previously rebuilt badly.

It is reinstalled, moves freely without any binding. The cables are evenly stressed and the pedals are even and at the appropriate distance from the firewall.

Blog entry here: https://www.taildragger.eu/kit-log-entr ... situation/

G.
1948 170 Project (N4180V) now EI-AEN SN:18513 - Dublin, Ireland
https://www.taildragger.eu/
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GAHorn
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Re: Rudder Attachment Bolts

Post by GAHorn »

gobrien wrote:Thanks Ghost,

I rebuilt the rudder, made new sides for the top section which contains the mass and squared it off. I found apprentice marks all up in there, it had been previously rebuilt badly.

It is reinstalled, moves freely without any binding. The cables are evenly stressed and the pedals are even and at the appropriate distance from the firewall.

Blog entry here: https://www.taildragger.eu/kit-log-entr ... situation/

G.
It appears the vertical was once-equipped with a VOR “whiskers” type antenna. How’d you scratch your left thumb?…opening a congratulatory beer? :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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johneeb
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Re: Rudder Attachment Bolts

Post by johneeb »

G. the rudder rebuild looks good.

George, in Irland beer comes in pint glasses, no opening required just enjoyment.
John E. Barrett
aka. Johneb

Sent from my "Cray Super Computer"
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GAHorn
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Re: Rudder Attachment Bolts

Post by GAHorn »

Harp Lager:
32A11322-DCD7-48D1-8AD6-716F5390826A.jpeg
Admittedly, not my favorite Irish brew…. :wink:
'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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DaveF
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Re: Rudder Attachment Bolts

Post by DaveF »

Nice blog, thanks for the link.

Good work on the airplane.
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Poncho73
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Joined: Tue Apr 19, 2011 1:25 pm

Re: Rudder Attachment Bolts

Post by Poncho73 »

DWood wrote:Poncho73
The lowest one of the 3 bearings is pn A-325-1 or A325-1 as in this post which might help you.
viewtopic.php?f=2&t=2271&start=0
In that post it is stated as follows:
"The original bearing PN A325-1 (superceded to S1003-11A) lists for $10.70"
48 170 IPC page 38 figure 20 items 70, 71

Edit: It might be this one and you should verify with McFarland
https://www.mcfarlaneaviation.com/produ ... S1003-11A/
and the bushing
https://www.mcfarlaneaviation.com/produ ... C0431119K/
Also available at Aircraft Spruce
Ordered and installed. I used the oversized bushing. Perfect fit. Thanks for the info.
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