Rotax 912 13VAC @ 2000RPM
in 912 / 914 Technical Questions
12 years ago
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by Rob Seaton » 12 years ago
The ignition should not be affected. The original question was about the battery charging system?
the stator has two functions:
-2 coils provide AC power for the ignition.
-8 coils provide AC power to the regulator (charging for battery and airframe power system)
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by Przemysław Wiśniewski » 12 years ago
Problem is with charging not ignition.
I checked today stator. It's look's fine, it's clean, no overheat visible via holes.
I checked again voltages on full load. There is 13VAC on 2000RPM and about 25V @ 4000RPM.
After rectifier i have 12,5-13,5VDC. 13VAC at idle is low, there can be no charging but at 4000RPM and 25V.. good rectifier should be able to regulate it's to 14,5VDC.
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by Rob Seaton » 12 years ago
The Rotax regulator output is 13.5V
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by Przemysław Wiśniewski » 12 years ago
According to documents yes but when I'm looking for voltages in another planes 13.5 is minimum, it's normaly to get 14-14,5V.
In my 13,5 is max.
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by Rob Seaton » 12 years ago
when you say other planes are they lyc or TCM powered? The normal output for the Rotax is 13.5 so you have no problem
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