Battery Cable Firewall Penetration

[JDA_BTR]

Trying to stick to plans as much as possible, I landed the starter contractor on the left firewall inboard and below the brake fluid reservoir. I'm planning to use the plans penetrations for the control cables. There is a large hole outboard left upper firewall for the battery cable to pass through. Would like some input on choices....

1. Using that hole from plans, what grommet is used to hold the cable? I can't locate that in the plans.
2. If I put in a SS firewall sleeve penetration, what is used to seal the that hole in the plans? My initial thought is a SS press plug with fire-resistant sealant on it.
3. Where on the left side is the best location for a SS firewall sleeve penetration, that doesn't interfere with anything else once everything is installed?

 

[Carl Froehlich]

The very nice SS firewall penetration that comes in the RV-14 kit is perfect for this. I used two in the new RV-10 project, one on each side.

Firewall Penetration Fitting, Wiring

store.vansaircraft.com

Plate, Firewall Penetration

store.vansaircraft.com

I use a few inches of small diameter fire sleeve inside the fitting to protect the wires. On the engine side I use larger diameter piece of firesleeve to over the outside of the fitting. A hose clamp to hold it together, and some hight temp RTV to seal the firewall side end.

Carl

 

[JDA_BTR]

The very nice SS firewall penetration that comes in the RV-14 kit is perfect for this. I used two in the new RV-10 project, one on each side.

Firewall Penetration Fitting, Wiring

store.vansaircraft.com

Plate, Firewall Penetration

store.vansaircraft.com

I use a few inches of small diameter fire sleeve inside the fitting to protect the wires. On the engine side I use larger diameter piece of firesleeve to over the outside of the fitting. A hose clamp to hold it together, and some hight temp RTV to seal the firewall side end.

Carl

Thanks Carl I will probably use the same. The location is where I’m head scratching.

 

[Carl Froehlich]

Thanks Carl I will probably use the same. The location is where I’m head scratching.

I tend to put one on each outboard side of the firewall, at about the same height as the starter solenoid (location is already defined in most kits). This provides for a short run for the big battery cable to the starter solenoid (assumes battery not mounted on the firewall). The side location tends to also make EGT/CHT probe connections a straight shot down the side of the engine.

Carl

 

[DCBrown198]

From the Amazon aviation department...

 

[JDA_BTR]

Yep, the shower rod holders are pretty easy... did you cut one off to reinforce the back side?