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Monday, 14 November 2022

Prop Controller / Manual Pitch Change Switch

This entry is about a lesson learned, and creeping elegance.

When I layed out my panel, I put a spot in right above the throttle for the prop controller (which goes in a 2.5" standard hole).  What I FORGOT was the manual course / fine pitch switch needed for manual operation.

I dont have any room, and where I do have room it doesnt fit (too tall).  This is the wee beasty...


After much pondering, I decided under the throttle / instrument panel would work.  Its close to the throttle, out of the way, etc.  I could use 2 of the bolts the secure the panel to the cage to tie it in.

The first version was pretty crude and was not square.  The 2nd version was much better, but for some reason I decided the mount the switch on the face of the panel.  Once I realized that the mounting holes in the switch were threaded (6-32), I pitched that one and made a 3rd.

2nd version


3rd (and hopefully final) version



The ultimate position would be beside the controller, but I dont have room.  2nd best would be on the switch panel beside the throttle, but the switch is too tall for that.  The other consideration was to keep it away from peoples knees.  It is in the center of the airplane (lined up with the tunnel cover below).


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