MOD Upgrading the ignition backup battery in a Carbon Cub E/FX-3 (EarthX ETX104)

[Cactus Charlie]

I pulled the EMERG IGN breaker and my volts went to 0.

Please study the switch schematic. You either have a serious problem with you emergency ignition configuration or CubCrafters has changed the circuit design.

Have you successfully run the emergency ignition test with ignition switch on R ONLY? If so, what did IGN VOLTS read?

 

[Neal]

Please study the switch schematic. You either have a serious problem with you emergency ignition configuration or CubCrafters has changed the circuit design.

Have you successfully run the emergency ignition test with ignition switch on R ONLY? If so, what did IGN VOLTS read?

I tested this in the prior ground run with no issues, expected results. There is a video at the bottom of this post that outlined that test if you want to observe.

My hunch has been all along since that test that yes, something is changed between yours and mine and whatever version of the schematic you have.

I hope to fly Sunday and will observe and test and report back after that flight. Was hoping to fly today but didn't make it.

 

[Neal]

Anyone else that wants to do this test and report your result let us know.

1. Turn on MASTER, note your ignition battery voltage
2. Pull the EMERG IGN breaker below the on/off switch. Note the ignition battery voltage. Does it remain the same or drop to 0?