Correct angle for full rudder deflection on a Super Cub?

D

DanP

MEMBER

Hudson, MA

• Jul 25, 2020

• #1

I am wondering if anyone has a correct angle for full rudder deflection in a Super Cub. I want to check that ours is set up correctly because, when slipping to the left, it felt like the nose did not want to come over very far. Maybe it was the crosswind, but the winds were very light today.

 

D

DENNY

SPONSOR

• Jul 25, 2020

• #2

Need more info, is it a PA 18A or just a PA 18. 20 degrees +/- 2 (except 25 ° Right and Left

for Models PA-18A, PA-18 "135", PA-18A "135", PA-18S "135", PA-18 "150", PA-18A "150", PA-18S "150", and PA-18AS "150")
DENNY

 

mike mcs repair

Registered User

chugiak AK

• Jul 25, 2020

• #3

just check that it has 1/8" gap to the elevators.... each direction.... thats the correct deflection...

the legal deflection is stated above by denny.....

 

B

bob turner

Registered User

• Jul 25, 2020

• #4

Thanks. I have one to check this week. I shall take my grinder. Or maybe a file.

 

windy

SPONSOR

Utah

• Jul 25, 2020

• #5

It should go as far as the rudder stop allows it to go.


Sent from my iPhone using SuperCub.Org

 

Grant

FRIEND

At Work.....

• Jul 26, 2020

• #6

Make sure the rudder deflection is determined by actuating the pedal. Moving the rudder by hand will not identify a mis-rigged rudder cable or a rudder cable that is too long.

 

Last edited: Jul 26, 2020

D

DanP

MEMBER

Hudson, MA

• Jul 27, 2020

• #7

Thanks to everyone. That is great info. Denny's post raises a question: the airplane is a 1950 super cub (one of the very first to leave the factory with flaps). It was originally equipted with an O-235 lycoming. I am guessing the original factory deflection was 20 degrees.
With the install of the O-320, should the rudder deflection be increased to 25 degrees?

 

BC12D-4-85

SPONSOR

Fairbanks, AK.

• Jul 27, 2020

• #8

See TCDS 1A2 Page 6 or Post #2 above.

Gary

 

D

DENNY

SPONSOR

• Jul 27, 2020

• #9

As usual I would just do what Mike says.
DENNY