skylor4(at)yahoo.com Guest
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Posted: Sun Apr 11, 2010 1:13 pm Post subject: RV-List: Circuit To Combine Mag P-Lead For RPM Measurements |
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Matt,
You may recall that I provided a suggestion of using a Westach inductive sender when you asked this question on the GRT yahoo group over a year ago:
http://groups.yahoo.com/group/GRT_EFIS/message/6872
Skylor
Sent from my iPhone.
On Apr 11, 2010, at 10:26 AM, Matt Dralle <dralle(at)matronics.com> wrote:
Has anyone found a device or circuit to pick off the output from the P leads on the left and right mags for feeding to an RPM measuring device such as the GRT EIS-4000? The EIS-4000 only has a single RPM input. The installation manual suggests installing a SPDT switch between the left/right mags and then to the input on the EIS-4000 for manually switching between the mags during drop testing. But that's pretty hoekey. Seems like someone should have come up with a simple prioritized switching circuit that would, say, always read the left mag p lead unless there wasn't a signal, then read the right mag P lead output. In my "spare time" maybe I'll make one if there isn't something already out there like this.
I thought that once upon a time I saw an electronic gizmo you could screw into the standard tack drive that would give an electronic output. Anyone have a line on this device and whether its compatible with the GRT EIS?
Thanks!!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Log
Status: Final Bits/Inspection/Test Flight
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