Aileron washout on -12

[flybynite]

The Northland drawings show a small amount of washout on a SC ailerons. Do PA-12s have the same amount of washout ? My 12s ailerons have been rebuilt and are flat. Is this correct?

Wayne

 

[Gordon Misch]

A new 12 aileron I bought from Univair is straight.

 

[cubunltd]

The ailerons are straight on 18's and 12's

John

 

[kase]

We got a repair jig for 18 ailerons and its set up with 3/8 washout. Dakota Cubs aileron assembly jig has 3/8 washout. The Piper drawing calls for 3/8 + - 1/8. I think the flaps have 1/4 washout but would have to check on that. Dont know about the 12 but I would be surprised if its 0 washout.

 

[Bugs66]

I was wondering how much difference it makes to have the washout in ailerons. My experimental won't have the washout on the ailerons because the d-sections are extruded and cannot be twisted.

 

[Steve Pierce]

You can twist the trailing edge. My jig is 3/8" washout per the Lycoming drawing.

 

[Dave Calkins]

Okay Steve. Whatever data you wanna use.

 

[Steve Pierce]

Ten people in the hanger talking Cubs. My brain is frazzled. I use Lycoming data to build Cubs and Piper data to build engines.

 

[behindpropellers]

Steve-

You should have had Steve J. do a webcast!

Tim

 

[flybynite]

So, I guess that either flat or 3/8" washout would work as long as they're both the same. I did notice that the wing rib just outboard of the aileron is just a bit higher than the inboard end, but there is some slight amount of up and down adjustment possible in the rib. Thanks for the replies !

Wayne

 

[flybynite]

After reviewing the responses, those west of the Mississippi use washed out ailerons. Easterners use flat ones???

Wayne

 

[cubunltd]

After looking at the drawings a little closer, they do show 3/8' washout at the tip. I have several Univair ailerons and they are all flat. As flybynite said, I think as long as they're both the same, they'll work.

Always learn something new.....

John

 

[StalledOut]

"After reviewing the responses, those west of the Mississippi use washed out ailerons. Easterners use flat ones??? "

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

No, washed out ailerons belong to those cubs along the gulf coast, specifically the cubs in New Orleans.

 

[moneyburner]

I never wash 'em! Just leave 'em dirty!