Mailing List flyrotary@lancaironline.net Message #16042
From: Jim Sower <canarder@frontiernet.net>
Subject: Re: [FlyRotary] Re: FW: Re: Plugs and Mags
Date: Tue, 25 Jan 2005 23:29:00 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Almost certainly not.  So how about, at least on the shrouded plug, select a much hotter plug and see if it will burn off.  From inside that shroud I would seriously doubt it could cause anything like detonation.  Would a propane torch be hot enough to burn off the deposits on the ceramic, or would you really need an oxifuel torch?
There HAS to be a way ... Jim S.

WRJJRS@aol.com wrote:

Not certain that reciprocating engines have the same problems as their plugs
are not as shrouded as ours so combustion process probably help keeps
blowing off deposits on the ceramic center cone.

FWIW

Ed A

Ed, The piston engine plug is exposed and the heat range is calculated to allow the deposits to burn off. It does seem obvious but it is amazing how many racers just don't have a handle on hot plugs/cold plugs.
Bill Jepson

 

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