----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Ed...
Merry Christmas! (We're not celebrating the
"Holiday" at our place.)
I pray that you will remember the "Reason
for the Season.
Now...another reason for the e-mail...
"You've always been a proponent of a mixture
control. I'm now convinced and would like to plan some trips over the mountains
to Tennessee.
What unit would you recommend I look at for my
mechanic to install?
Thanks again for your willingness to help those of
us who wish to arrive alive.
Regards to you and yours,
Ed Robbins
----- Original Message -----From: Ed BurkheadTo: 'Coupe-Tech'Sent: Tuesday, December 13, 2005 12:12 AMSubject: [SPAM?] FW: WRB Re: [COUPERS-TECH] Ercoupe 415C Fouled plugs----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
From: William R. Bayne [mailto:[EMAIL PROTECTED]
Sent: Monday, December 12, 2005 11:11 PM
To: Ed Burkhead
Subject: WRB Re: [COUPERS-TECH] Ercoupe 415C Fouled plugs
RLYTECH
Hi Don,
The Continental engine assembly chosen by Erco (and Fred Weick) for installation in the Ercoupe came with a Stromberg carburetor. That carburetor has an adjustable mixture control which, to conform to its approved design criteria, must be functional. Every Ercoupe flight tested for conformance to its approved Aircraft Type Certificate by a CAA-designated representative had a factory-installed pilot-operable mixture control. When properly maintained and operated, it WORKS, and works WELL.
Competent use of the mixture control results in increased power, economy and range at altitude when you fly somewhere. Even for those who seldom get out of the pattern, an operable mixture control allows leaner ground operation and run-ups to help deal with the adverse effects of the fourfold increase of lead (over 80/87 aircraft fuel) in 100LL.
Once you have fully functional plugs and mags, I would strongly urge the reinstallation of your original mixture control. Subsequent intelligent use would restore in-flight options to deal with the problem(s) you describe, and might permanently eliminate those caused by excess lead accumulations from unnecessarily rich operation.
All such carburetors have an "artificial enrichment" at full throttle (which would accelerate excess lead deposits), and some coupers operate at full throttle much of their time aloft. The engine won't fail in such use, but the lead deposits thus encouraged without mixture adjustment are about as desirable as the cholesterol deposits from double-meat burgers. IMHO a coupe without a fully functional mixture control is not an "alternate life style" but an extremely poor choice we are all free to make (with a 337:<)).
Regards,
WRB
--
On Dec 12, 2005, at 1:20 PM, Donald Perricone wrote:
Anyone:
We have a 415 C with a 75 Continental upgraded to a C-85 and with a Stromberg Carb.
In the last month or so we have had a rough mag check...
...because we don't have a mixture control to lean out the engine to clear out the problem we ran it up to about 1,800 on only the bad mag and the problem went away.
A few days later we tried to fly again and the same problem came back.
Does anyone have any ideas about how ot solve this problem. We would like to hear from anyone who might have some suggestions.
Thanks for your help.
Don
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