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Rob's REBVAIR Project
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Date: 5-29-2018
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Number of Hours: 4.00
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Manual Reference:
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Brief Description: Engine compartment clean up
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It is now time to finalize the firewall forward area. Cable and wire management is the main activity, as well as protecting same from abarasion. This includes zip ties with tubing sections as cushion, adel clamps, and hose clamps
Image 1 shows a common firewall passthrough using silicone firesleeve, a steel fitting, and SS safety wire, adapted from Bob Nuckoll's book.
http://www.aeroelectric.com/articles/Firewall_Penetration/firewall.html
I did a fair amount of research to see whether one really needed to use those expensive single-use clamps available at aircraft spruce. I came accross an STC document for the installation of firesleeve patches in certificated aircraft installations, where safety wire was the accepted attach method.
https://www.herberaircraft.com/pdf/117Cat/Sleeves/AE272%20Flexwrap%20Firesleeve_revision_TF100-11_REV2.pdf
IF it's good enough for a patch on a certificated installation, it's good enough for this installation. And why not? It's robust, fire resistant, and easy to remove and maintain.
Inside the first roll of firesleeve, there's a bit of fire-proof sealant.
Image 2 shows how the braided fuel hose is held in place with a tiewrap standoff.
Image 3 shows how I restrained the ignition cables from contact with the oil temp sensor tube.
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firewall passthrough
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tie wrap stand offs
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ignition cable stand offs
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