The DPDT would not work in my case. The re is no backup system as such.
The two systems are meant to be operated permanently together, like
magnetos. They are controlled by two separate switches, because you can
start only on one of them, and I want to be able to isolate the faulty one
in case of failure.
I guess I should investigate the diode solution.
Serge Vidal
KR2 "Kilimanjaro Cloud"
Paris, France
"Randy Powell" <randywpow...@verizon.net>
Envoyé par : krnet-boun...@mylist.net
11/10/2006 02:53
Veuillez répondre à KRnet
Remis le : 11/10/2006 02:53
Pour : "KRnet" <kr...@mylist.net>
cc : (ccc : Serge VIDAL/DNSA/SAGEM)
Objet : Re: Réf. : Re: KR> Tach hook up question.
Most likely your tach is receiving a pulse from both systems. Some where
the two systems are interconnected. Chase out your wiring to find the
point
that connects both systems to the Tach and separate them. As others have
mentioned this can easily be done with a DPDT switch and can also be done
with a small SPDT relay wired to switch when you change to the backup
system.
----- Original Message -----
From: "Serge VIDAL" <serge.vi...@sagem.com>
To: "KRnet" <kr...@mylist.net>
Sent: Tuesday, October 10, 2006 8:00 PM
Subject: Réf. : Re: KR> Tach hook up question.
I have a problem too. When I switch the second ignition, the tacho goes
crazy. It gives nearly a double reading, with a shaky needle. Although it
is wired to only one coil.
The funny thing is that it worked well before, when I had a partial dual
ignition (two sets of ignition magnetic pick-ups (timing devices), but
only one set of coils and spark plugs. Now that I have a full dual, I
cannot read properly when both ignitions are active.
Any advice on that?
Serge Vidal
KR2 "Kilimanjaro Cloud"
Canberra, Australia
j35...@aol.com
Envoyé par : krnet-bounces+serge.vidal=sagem....@mylist.net
10/10/2006 17:29
Veuillez répondre à KRnet
Remis le : 10/10/2006 17:30
Pour : kr...@mylist.net
cc : (ccc : Serge VIDAL/DNSA/SAGEM)
Objet : Re: KR> Tach hook up question.
Mark:
Do not put a jumper between them as it will short the two ignitions
together. The safest way is to switch the tach wire when you switch the
ignition.
That requires a separate deck on the switch but is the safest and most
reliable.
Bob Lasecki
Chicago
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