Thanks Russ. Love the knowledge. > Message: 6 > Date: Fri, 04 Mar 2016 17:44:09 -0800 > From: Russ & Melody <russ...@telus.net> > To: cnc-list@cnc-list.com > Subject: Re: Stus-List Shaft pitting > Message-ID: > <mailman.670.1457194576.11427.cnc-list_cnc-list....@cnc-list.com> > Content-Type: text/plain; charset="us-ascii"; Format="flowed" > > Hi Brian, > > This pitting is not unusual for stainless steel that has spent time > in a low oxygen environment. The water in there is stagnate, oxygen > depletes, a galvanic cell develops and viola. The process is the > pits, so to speak. > > The remedy is pretty much as you did, clean up the shaft best as > possible. To my eye that amount of pitting is not going to affect reliability. > > To avoid future pitting don't leave the shaft in one position during > long periods of immersion. Run the engine a little while in gear or > at least turn the shaft by hand a bit during your regular checks when > you're not using the boat. > > Cheers, Russ > Sweet 35 mk-1 > > > At 02:15 PM 04/03/2016, you wrote: > > >I cleaned up the prop shaft. Then took 600 grit sandpaper then 400 > >grit sandpaper to it. There is some pitting on the shaft that rides > >in the bearing. Attached is a link to my blog that has a pic. Is > >this an issue? Do I need to replace the shaft or have these pits filled? > >Content-Type: image/jpeg; name=".facebook_1457129540635.jpg" > >Content-Disposition: attachment;
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