From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] RWS EC backup crank sensor
Date: Mon, 5 Oct 2020 06:29:57 +0800
References: <list-807273@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-807273@logan.com>
Message-Id: <DD39B3A0-D6FB-47A8-9E77-284013B6F8D6@gmail.com>

Hi all

I=E2=80=99m pretty sure I programmed my EC2 for and had the backup =
sensor functioning but it was years ago and I know with my current setup =
the backup sensor is disconnected.
The backup sensor in 90deg out of phase. So looking at the front of the =
engine its at ~3 o=E2=80=99clock as Dave says.

Note:
We had an all electronic ignition Glasair 3 IO470 go down due to a belt =
failure taking out the electronic ignition CAS.
I put a stainless steel wire in the harness of the CAS=E2=80=99s to =
protect against this single point of failure.

Cheers
Steve Izett

> On 5 Oct 2020, at 4:45 am, DAVID BARKER david_barker@msn.com =
<flyrotary@lancaironline.net> wrote:
>=20
> Dear Finn,
> Sensor at 6:00 0=E2=80=99clock is primary. Sensor at 3 o=E2=80=99clock =
is backup.
> If you cannot locate appropriate software, I can reconfigure the =
sensor physical locations if necessary.
> Dave Barker
>=20
> Sent from my iPad
>=20
>> On Oct 4, 2020, at 12:40 PM, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>>=20
>> =EF=BB=BF
>> Thanks Bobby
>>=20
>> In some of the manuals I've see 90 degrees before the primary, but in =
the code I looked at I think it mentioned 180 degrees.
>>=20
>> So, I'll have to look further. It sure will be interesting to find =
out how it determines if primary sensor has failed. Wonder what happens =
when  backup sensor fails and primary is OK. With no other inputs, I =
don't see how it can work.
>>=20
>> Finn
>>=20
>> On 10/4/2020 3:20 PM, Bobby J. Hughes bhughes@qnsi.net wrote:
>>> Finn,
>>>=20
>>> Both processors see both signals on pins 36&37.  I think the second =
sensor must be mounted 180 degrees opposite the main.=20
>>>=20
>>> Bobby
>>>=20
>>> Sent from my iPad
>>>=20
>>>> On Oct 4, 2020, at 9:48 AM, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>>>>=20
>>>> =EF=BB=BFDoes anyone have an RWS EC running with backup sensor?
>>>>=20
>>>> Yesterday I briefly looked at the EC code (program) and it appears =
that=20
>>>> when you have a backup sensor controller A uses main sensor and=20
>>>> controller B uses the backup sensor; is that correct?
>>>>=20
>>>> Or is there some automatic detection of main sensor failure that =
causes=20
>>>> a switch-over to the backup sensor for both A and B, that I missed?
>>>>=20
>>>> Finn
>>>>=20
>>>>=20
>>>> ---
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