REFLECTOR: Running LOP -- Climbing or Cruising
Brent Bourgeois
bjb3013 at yahoo.com
Fri Nov 12 15:47:35 CST 2010
The hot / cold of a plug is the measure of how much heat the plug conducts out of the cylinder. The thread depth (length) changes not the ceramic or the electrode. Search hot / cold racing plugs on the internet
Brent
N61VB
New Orleans
--- On Fri, 11/12/10, aminetech at bluefrog.com <aminetech at bluefrog.com> wrote:
From: aminetech at bluefrog.com <aminetech at bluefrog.com>
Subject: Re: REFLECTOR: Running LOP -- Climbing or Cruising
To: "sbjknox" <sbjknox at earthlink.net>, "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Date: Friday, November 12, 2010, 12:37 PM
Are you saying the cooler plug has a shorter center electrode? Can I file mine off to make them shorter? I'm planning to get some cooler plugs, but they won't come until next month and I really need to keep flying now.
John
--- sbjknox at earthlink.net wrote:
From: "sbjknox" <sbjknox at earthlink.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Running LOP -- Climbing or Cruising
Date: Fri, 12 Nov 2010 00:12:13 -0600
>> That's interesting. I'm currently have spark plug issues and I'm
>> planning to try a cooler plug. Could I simply add a washer to my
>> existing plugs to get less reach and effectively make it cooler?
>> John
My opinion (not a fact) is just the opposite. The washer would create a
longer path for heat to flow from the plug body to the cylinder. You want a
lower heat-resistant (shorter) path from center electrode to the cyl...that
is why a colder plug will have a shorter exposed (exposed to the hot
combustion gas) center electrode insulator.
Sid Knox
Oklahoma
Velocity 173 RG N199RS
Starduster N666SK
KR2 N24TC
W7QJQ
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