Archive for the control system Category

Control System, Final Details

Posted in Ailerons, control system, Super Stinker X with tags , , , , , , on July 18, 2014 by mars58

Sorry for lack of action on the blog, here is some catch up from May…

The last part of the control system has been the Slave Struts. The S-1-11 has Four ailerons. The stick is moved left and right, pushing and pulling tubes, through idlers and bell cranks in the lower wings which move the lower ailerons. The lower ailerons have arms that come off of the front of the aileron spars that connect to the Slave Struts which connect to the top wing’s ailerons via, you guessed it, arms that come off the front of the top aileron spars. So when the lower ailerons move they move the upper ailerons. One critical part of this besides lining it all up correctly was to get the slave struts lined up behind the I struts.

The slave struts start life as a piece of streamlined tubing, round tube and some flat steel. At the bottom of the strut is a Rod End bearing. The streamlined tubing is notched to allow the smaller tubing to be welded into it then threaded to receive the rod end. The streamlined tubing is then cut at an angle on the front and back for clearance. This will bolt to the lower aileron arm.

At the top of the strut is a fork. The flat steel is bent into a fork, a U shape that is welded to the top of the streamlined tubing. The fork is what the bearing in the top aileron arm will fit between. A bolt will go through the fork and bearing connecting them. Before welding the fork I used a dremel and sanding drums to sculpt the top of the streamline tubing, meticulous and tedious but it allowed me to get the strut exactly where I wanted it.

Once the struts were welded I finally had a complete control system. The next step was to expand the clearance around the struts and aileron hinges by removing bits of the aileron skin until I had good clearance.

Lower end of Slave Strut

Lower end of Slave Strut

Lower End of Slave Strut

Lower End of Slave Strut

Lower End of Slave Strut

Lower End of Slave Strut

Lower End of Slave Strut

Lower End of Slave Strut

SlaveStrutAndLowerAileron

Bottom of Slave Strut Connected to Lower Aileron

TopOfStrutBeforeWeldRearView

Sculpting Top of Slave Strut

TopOfStrutBeforeWeld2_101642

Sculpting Top of Slave Strut

TopOfStrutBeforeWeld

Sculpting Top of Slave Strut

TopOfStrutWelded2

Top of Slave Strut Welded

TopOfStrutWelded

Top of Slave Strut Welded

%d bloggers like this: