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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-933070@logan.com>
Subject: Re: [FlyRotary] Re: Fw: Lead Solvent or Cleaner
Date: Thu, 19 Jan 2006 16:16:43 -0500
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> Ed,
>
>   I certainly qualify as an "enthusiast", but I'll have to admit
> that I've not done any heavy investigation into the chemistry of bore
> cleaning.  I've used #9 for nearly all my shooting years (~50), and
> your observation may be valid. I don't think it "dissolves" lead
> itself; rather, it weakens the bond between the lead and the metal
> it is stuck to.  It still takes a bit of scrubbing with a wire
> brush to get the lead smears to break loose (less if you let the
> cleaner sit in the bore for a bit.)  I'd think that would be less
> of a problem with spark plugs, since you don't have the same level
> of mechanical infusion of the lead into the surface. (At the
> beginning of the bore, pressures at the base of the bullet from
> propellant combustion are in the range of 30,000 psi (pistol) to
> 50,000 psi (rifle).
>
> Looking forward to your report.
>
> Dale R.
> COZY MkIV #1254
>
>
Thanks for the report, Dale.  You make a good point about degree of 
adherence.  I am uncertain the mechanism of the lead crystals attaching to 
the ceramic cone.  But, the wife came back with Hoppe #9 and when I looked 
at the ingridents on the lable - there was only one - Kerosene!

If that is all it contains then that tells me is a mild cleaner and 
lubricant but not a solvent of lead

Ed

>