Re: [COUPERS-TECH] Ignition Problem

[dennis spiegel]

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Hi Dennis , Hows your Tach? some times before they go they act up -- maybe the cable  --just a thought--  Dennis 99564

roger anderson <[EMAIL PROTECTED]> wrote:

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I know you are getting tired of buying mags, and two bad in a row is unusal.
However, if you're ready to give up on Bendix and overhauled mags, I'd call
Mattituck and see what kind of package they are offering right now on a
complete Slick package. That includes new mags, gears if needed, harness,
and new plugs. They take the old mags in trade and have an additional
rebate also I believe. Keep one set of plugs for the future. I like my
Slicks. roger
----- Original Message -----
From: <[EMAIL PROTECTED]>
To:
Sent: Wednesday, August 16, 2006 1:08 PM
Subject: [COUPERS-TECH] Ignition Problem


> ----[Please read http://ercoupers.com/disclaimer.htm before following any
> advice in this forum.]----
>
>
> My mechanic has almost run out of suggestions to solve this problem so I
> will appreciate any help you can provide.
>
> Some background: I have a 1946 415C which was converted from 75 HP to 85
> HP by a previous owner by making 2 changes in the carb and by changing the
> full point to 4.5 quarts on the dip stick. The 337 form lists no other
> work. During it's last annual (Sept 2006) all cylinders were in the mid
> 70's, 8 new plugs were installed, and a new wiring harnsess was installed.
>
> About 3 months( 25 hours) ago I experienced an RPM drop on the right mag
> that I could not correct. After much checking by my mechanic, I purchased
> (from Aircraft Spruce) an overhauled Bendix mag. After installation and
> timing the problem was completely eliminated and left and right mag drops
> were about or even less than 50 RPM. I flew the Ercoupe about 20 times
> for a total of 25 hours with absolutely no mag drop problems.
>
> Then, about a week ago, at run up I had a 200 RPM drop on the right mag.
> My mechanic removed, cleaned, and tested all 8 plugs. All tests indicated
> they were firing correctly and after removed the plugs were dry and
> appeared to have been firing. The new wiring harness also checked out
> properly. So, I bought another overhauled right mag, had it installed and
> the engine timed, and the 200 RPM drop continues on the right mag. Today,
> after checking to make sure the left and right mags are identical, we plan
> to switch the mags and see if the problem moves from the right to the left
> side. If the problem moves to the left side, we believe that the the
> overhauled mag I just bought is defective (just like the one with 25 hours
> on it)
>
> I would appreciate any help and advice from anyone. Thanks
> Dennis Hatfield
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> --
> Dennis
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