Curtiss Jenny Restoration

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Location: Peachtree City, Georgia, United States

Thursday, February 01, 2007

rudder bar, rudder horn and fitting

I decided to work on the rudder bar today. There were two original rudder bars with our project and when they were disassembled, I noticed that one set of hardware was cut !

The picture below shows the tube that extends through the rudder bar and into the casting. (more about this assembly later).





So, an extension had to be made. I took some .125 tubing and matched it to the original piece. Since this bar rotates in the casting, it would have to be smooth....and straight.





Here's the weld.



A little time on the grinding wheel and sander produced this.


Cut on the saw to exactly 4 inches to match.




Here's the rudder bars after some good cleaning and several coats of epoxy varnish. I kind of like the "used" new look. The above mentioned pieces fit in these holes.







Now it was time to tackle the rudder horns. They are 10 3/8 in. in the back side, which is bigger than the elevator horns. But, my jig worked fine, with a little modification.

Like the other horns, I cut the pattern out of cardboard and transfered to .025 sheet steel. One thing I did differently (I do learn occasionally) was to pre-bend the trailing edge. This gives the horn the nice rounded shape on the spine rather than two pieces of steel at a sharp angle.

I did this by shaping the edge on a spare piece of small tubing with a tack hammer.





Then the steel was placed on the jig and the trailing edge was tapped into the final shape. There's a process here - tap into shape and tack weld a few inches. Move the jig down the vice and repeat.







Here it is after a few tacks.


I'll finish welding this next week.
Also had a chance to rough cut one of the rudder trailing edge brackets. The wire/turnbuckle assembly attaches here.
.
Till next week
Brian

2 Comments:

Blogger Stephen said...

Looks great Brian! Your welding is getting really good.

1:35 PM  
Blogger JT said...

Nice work on the rudder bars!

6:32 PM  

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