<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'><P>Some crankshafts are heat treated, so I'd be carefull using any acid based de-rusters. Probably won't hurt anything, but unintended consequences can occur.</P>
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<P><BR>----- Original Message -----<BR>From: "Ron Van Putte" <vanputte@cox.net><BR>To: "General pattern discussion" <nsrca-discussion@lists.nsrca.org><BR>Sent: Monday, November 16, 2009 1:18:11 PM GMT -05:00 US/Canada Eastern<BR>Subject: Re: [NSRCA-discussion] Rust on OS1.60 Crank<BR><BR>I remove most of the rust from iron/steel items by using fine steel <BR>wool and phosphoric acid (Osmose). It causes a chemical reaction <BR>with the rust (ferrous oxide) and converts it into an inert form <BR>(ferrous sulphate).<BR><BR>BTW Osmose works well on the whitish/bluish powder/crystals which <BR>form on some electrical connections.<BR><BR>Ron VP<BR><BR>On Nov 16, 2009, at 12:01 PM, Pascoe,Tim [Burlington] wrote:<BR><BR>> What’s the best way to clean rust off the crank of an engine, or is <BR>> it even necessary? I have an OS 1.60 that has very low run time <BR>> (less than 2 gallons), but had been sitting for a while. I pulled <BR>> the bearings out as the main looked/felt as if it could use a <BR>> change. At the same time, I noticed a fair amount of rust on the <BR>> crank, specifically in front of the con-rod pin opposite the <BR>> counter-balance. Should this be cleaned off, and if so, what’s the <BR>> best way to go about it? I’ve switched bearings before and there is <BR>> always some rust, but this seems to be more than I’d expect.<BR>><BR>><BR>><BR>> Thanks,<BR>><BR>><BR>><BR>> Timothy Pascoe<BR>><BR>><BR>><BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR><BR>_______________________________________________<BR>NSRCA-discussion mailing list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR></P></div></body></html>