Engine Bay Air Temperature

[Aero_tango]

Engine bay temps



….The real eye opener was when I put the plane in the hanger and was about to remove the temp probe and saw it was showing 64°c ! The battery is rated to 60c…...

According to EarthX, the max operating temp is 60c, but 85c when not in operation.



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[AKKen07]

Good catch, that’s very useful info!

[Nev]

Yep thanks for that. Good to know.

[kestrel]

I've watched an EAA webinar (that there is no chance I could find again) where an EarthX directly stated that they were not worried about some heat soak after shutdown.

[kestrel]

How many are putting the EarthX battery on the cockpit wide of the firewall?

Mine is on the engine side because that's where the battery box was when I bought the plane. EarthX and my measurements say its fine. If I were building I'd try to put it on the cabin side and be sure to use a battery with the vent option. I'd expect the battery to last longer at the lower temperatures.

[Nev]

How many are putting the EarthX battery on the cockpit wide of the firewall?

Mine is on the engine side. It kept the cable runs relatively short.

[Utah-Jay]

Mine is on the engine side. It kept the cable runs relatively short.

In the end that is what I decided to do as well. The cable run to my ACM is less than 12”