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I have designed a “Bus C” in to the electrical system for two reasons:


Extra fused power sources

There is lots of debate about the pros and cons of Cb’s v Fuses in aircraft electrical systems. If a CB trips during flight it’s very rare that it’s sensible to reset until the cause is investigated … preferably on the ground!

So I’ve opted for a fused Busbar C, avoiding unsightly CB’s cluttering up the cockpit. This is one advantage of the VPX system, so I wanted to avoid unnecessary visible CB’s for the extra power sources on Bus C.

I wanted to mount it between the VPX and the GEA 24 in the avionics bay on the support bars, so I made a mounting plate.


In order to allow clearance for the GEA 24 connectors, it had to be mounted lower.

I considered drilling the holes the the support bars in situ, but eventually admitted defeat and removed them … another hour added to the build time : )


I was concerned that the mount might vibrate, so decided it would be safest to attach a little stiffener. I want to keep everything as light as possible, but as with everything in aircraft design, it’s a compromise.

I fabricated the stiffener from a piece of spare J Angle.


All primed and ready to install.


I worked on this with the fuselage on its side in the rotisserie. Much easier!


I’m hoping the geometry will all work out and allow room for the connectors and wires.


One comment on BUS C
  1. Jonathan

    As always Steve, amazing work.

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