I have a 2500 I'm installing in my plane and it only has one RPM sensor, how can I hook one up to both mags so I can watch RPM drop?
I have a 2500 I'm installing in my plane and it only has one RPM sensor, how can I hook one up to both mags so I can watch RPM drop?
They both remain spinning so you just place the sensor in the non-impulse mag.
Only one sensor is used in a dual mag setup.
Correct, you will use one sensor in your right mag wired to the analog module. The mags continue to turn, even if they are grounded, providing RPM on both, left, or right settings.
Are you seeing this on your mag check procedure? Because you are the first aircraft in our 20 years that it doesn't work this way.
If your engine is running both mags are spinning on the same gear. If they are spinning on the same gear then the magnet attached to the shaft on both mags must pass by the hole use use for RPM pickup no matter which mag you place the sensor on. Grounding the mag just keeps the coil from building charge and has nothing to do (besides keeping engine running) with the RPM output.