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RV-7A Tip-up QB build project
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Date:  5-4-2012
Number of Hours:  9.50
Manual Reference:  
Brief Description:  Final control cable face,

With the revised engine control cable mounting bracket completed, primed and installed, I
re-installed the cables and knobs as before buit now with better spacing and although the sapcing was good the bracket itself seemed to be falling short, For one thing it flexed under the pressure of pushing and pulling on the knobs, especially in the middle (on the pitch knob) and an undue amount of strain was being put on the panel although I knew the panel would be supported in that area by the map box housing in time to come. I spent some time playing with this and testing the bracket under strain and desided it needed a final redo, with the lessons learned and a great new material in hand I redesigned the bracket alltogether. I used some rectangular aluminium extrusion as a face giving a 'box' structure to the 'bracket'. The face of the box was drilled as before for the knob installations, the back side was cut with a hole saw to the maximum diameter I had on the material to allow access to the knob retaining nuts and bolts that will secure the bracket to the panel. What resulted was a lightweight, sturdy and good looking assembly that was a lot easier to deal with and handled the operation (even vigarous) of the knobs with ease. Besides this dissasembly then reassembly I also spent some more time on the forward structure riveting and canopy hinge parts.
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spacing was right but too flimsy and  needed better attachment

spacing was right but too flimsy and needed better attachment

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new 'bracket'

new 'bracket'

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