While there are a lot of pictures taken during the process of building your own EA, (experimental aircraft) to develope your builders log. But only document the things that have been done differently than most other builders. Hopefully this will spur ideas that will be helpful to others and the growth of EA. Note that all methods here are not proven or endorsed by myself or the KR company or KRnet web group. Use ideas at your own discretion and liability.
Clockwise from top. 2 bifold closet door "top pivot" springs and a piece of brass are converted to elevator trim hinges. Excess metal is trimmed, leaving a lip for the wood to help grip the body and installed in the trim tab. The brass bodies are installed in the elevator at precisely measured locations. Not seen are 2 brass 1/4" water line compression seals that are filed down to fit into the body of the pivot springs to take up slop in the body. This way the hinge has a precision movement. Be sure the center stills pops out under the pressure of the spring. The tab and the elevator opening have epoxied in wood pieces along the sides. All is sanded, fitted, and measured perfectly before installing the pivot springs. Once made, they "snap" in and are then un-removeable.
Below are pics of the bell crank designed for using push tubes instead of the plans design cables for the ailerons. The bracket is made from H beam cut to shapes and the bell is 1/4 flatstock. There is a brass bushing press fit into the axle area. All aluminum used is 6061 T6 for safety and dependability. Notice that they are attached to the wing attach fittings. These fittings are easy to make out of the 4130 steel. Do not pay those ridiculous prices of the dealer. If you can build the rest of the plane you can make these.
Changing to push tubes required a redesign of the stick also. Though it is generally agreed this is needed anyway as the plans version sucks big time. This is what came up with for the stick control. The aileron conection is removed from the body of the stick and transfered farther down the control arm. The elevator control is connected at the stick and runs through the arm of the aileron control, through the rear spar to the bell crank for the elevator push tube. This is a final assembly picture, as long as their are no problems. The control arm is the H beam again with 1" OD pipe welded on the ends, with solid bar welded into the pipe end. The bearing this sits in is a 1"ID aluminum sleeve, greased and epoxied into a 3/8 aircraft grade plywood frame. There is an aluminum plate behind the ends of the control arm as a pivot pressure wall. The plywood framework is bolted thru the web of the spars, with extra plywood on the other side..
