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From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] EC3/EM3 data point
Date: Sat, 30 May 2020 16:17:59 +0800
References: <list-311466@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Thanks Finn.

Steve

> On 30 May 2020, at 9:43 am, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>=20
> Data point from Tracy: Even though the manual states: "The EC3 sends =
engine information over a serial link to the EM2 engine monitor (if =
used) including engine speed and many other parameters.", he early on =
abandoned using that. Too much jitter on the signal from the early 13B =
due to gear lash in the mechanical CAS. And from there on he just kept =
using the injector 1 pulse for RPM (and fuel flow).
>=20
> So EM2/EM3 always requires some tach input.
>=20
> Finn
>=20