From: "David Leonard" <Daveleonard@cox.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Tachs & things
Date: Sun, 27 Jul 2003 10:56:57 -0700
Message-ID: <000001c35468$79068bf0$f0000844@Leonards>
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Todd,
I found getting wires for the GM coils very easy.  Simply order a set of
MSD custom wires then call MSD for the fittings.(got mine from Summit)
They will send them free in a few days.  Here is the original message
from Al....


  "Looks basically the same idea as the MSD 8.5mm wires.  Best price I
found on the MSD wires was at www.sdpc2000.com .
 
"Since the only sets that MSD makes with the LS1 coils end sockets are
factory made for specific engines, I talked directly to the MSD tech rep
and he offered to send the LS1 ends at no charge, so I could put them on
a "universal" set from a retailer.  If you are going this route, call
MSD at 915-855-7123 and them you need the LS1 coil ends for your
wires.-Al Gietzen"

David Leonard
The Rotary Roster:
http://members.aol.com/_ht_a/rotaryroster/index.html

> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On
> Behalf Of Haywire
> Sent: Sunday, July 27, 2003 3:38 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Tachs & things
> 
> 
> Hi Ernest;
> 
> 
> > Todd,
> >   What kind of plug wires are you running there?
> 
> They are a custom made plug as the GM 'vette coils don't fit a
standard
> plug
> wire. I seem to remember the parts guy saying that all the plug wires
are
> suppression these days, however there is no marking on the wires to
> confirm
> this.
> 	Anybody who is yet to order the EC2 should know this when
deciding
> whether
> to have it set up for Mazda coils or GM coils. When I made my choice I
> assumed it would be a no-brainer. Knowing that the Mazda coils are
> expensive
> and assuming they may be hard to find, I figured that the GM coils
would
> be
> a cheap off-the-shelf product, available from any number of
aftermarket
> parts stores. They are anything but. This is not to say that they
won't
> work
> well, but just a heads up, that they are not as easy & cheap to use as
> might
> be expected.
> 
> 
> >
> > So, with this theory:  Your timing light might be working because
it's
> > pickup is more sensitive.  That could be because it has more wraps
of
> > wire in it's coil, or because it has a more expensive transistor.
Or
> > it could have a Hall Effect transistory and the tach not.  But it's
all
> > to say that you're not emitting enough noise for the tachs, even
though
> > there is enough for the timing light.
> 
> A quick inspection of the inductive pick-ups on both instruments
revealed
> that the timing light has far more wraps of a much finer wire than on
the
> tach.
> 
> >
> > Try using an unshielded wire on one plug that you attach the tach to
and
> > see if you get any response.  If the tach works on your car, try
pulling
> > one wire from there for just a few minutes as a cheap test.
> 
> Good idea, but as pointed out above, the standard plug wires won't fit
on
> the GM coils :-(. Now with that said, I must confess that I haven't
even
> tried a standard plug wire. When I bought the coils and asked for
wires, I
> was informed that they wouldn't have anything to fit them, but they
were
> able to have some made up and shipped up next day at no extra cost.
> 	This is the unfortunate thing about having the airplane at the
> airport.
> It's not as easy to quickly try new things, when good suggestions come
in.
> 
> S. Todd Bartrim
> Turbo 13B RV-9Endurance
> C-FSTB
> http://www3.telus.net/haywire/RV-9/C-FSTB.htm
> 
>    "Whatever you vividly imagine, Ardently desire, Sincerely believe
in,
> Enthusiastically act upon, Must inevitably come to pass".
> 
> 
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