...before the first start, to boot.![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
A "has anyone seen/solved something like this before" question:
Two PMAGs, each tach signal monitored with Dynon Skyview EMS-220. Flip on the master, and the SC screen boots up indicating rpm in excess of 10,000 rpm.
Remove ship's power from the left PMAG, rpm falls to zero, so the problem is likely the left PMAG or wiring, grounding for same. Naturally, the left PMAG is mounted where the connector most inconvenient to access. Jiggling wires at the connector has no effect.
Problem has developed with the fuselage still at home. I'm going through and correcting my wiring documentation before riveting the last skin on. There was no redline (and then some) rpm on the initial smoke tests. Still no smoke--just a ton of noise into EMS DB37 pin 34 from somewhere...
Thoughts?
A "has anyone seen/solved something like this before" question:
Two PMAGs, each tach signal monitored with Dynon Skyview EMS-220. Flip on the master, and the SC screen boots up indicating rpm in excess of 10,000 rpm.
Remove ship's power from the left PMAG, rpm falls to zero, so the problem is likely the left PMAG or wiring, grounding for same. Naturally, the left PMAG is mounted where the connector most inconvenient to access. Jiggling wires at the connector has no effect.
Problem has developed with the fuselage still at home. I'm going through and correcting my wiring documentation before riveting the last skin on. There was no redline (and then some) rpm on the initial smoke tests. Still no smoke--just a ton of noise into EMS DB37 pin 34 from somewhere...
Thoughts?