ianxbrown
Joined: 16 May 2009
Posts: 80
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 Posted: Mon Apr 12, 2010 4:36 am Post subject: RPM Transducer |
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Matt,
I believe the tranducer for RPM is IE VTACHGEN 2 from Van's and it works fine on my RV-9A straight off the tach port on the back of the engine. I have a Rocky Mountain micromonitor which accepts a similar pulse from the P-lead. It asks how many pulses per engine rotation in the setup so you could operate it on just one P-lead, or both. They instruct the builder to just put a capacitor in the lead to the instrument, which allows you to "y" the two leads/capacitors to one signal lead.
Great video of first start.
Ian Brown | Quote: |
"Time: 10:28:22 AM PST US
From: Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)>
Subject: Circuit To Combine Mag P-Lead For RPM Measurements
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."
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