--- In [EMAIL PROTECTED], "Tim Castleman" <[EMAIL PROTECTED]> wrote: > >I attempted a repeat last night with a Shop air compressor, and still > >no positive result. The wornout old thing could only make about 20 > >inches of vacuum, and nothing happened in an hour of maintaining it. > > The problem you will have with a refrigeration compressor is that by design > they discharge some oil on every stroke and will therefore soon lose enough > to cause it to fail. You will be able to achieve a 28" vacuum, but this will > probably degrade rather quickly, leaving you back where you are now. > There are actually vacuum pumps made for refrigeration work that are > designed to pull a 29" vacuum with no harm to the pump itself. A person > might find one of these at their local pawn shop for around $100, or brand > new for about $300. > > Tim
I may try to hook 2 old clunkers in series. Once the system is under adequate vacuum, I can shut one down, and only have to recirculate CO2 as a carrier of Ethanol vapors, with no pressure differential. I have first Dibs on a twin cylinder compressor with a 60 gallon tank. When I get it home, I'll see if it can make adequate vacuum be itself. If not, I'll connect them in series. I consider the 60 gallon upright pressure tank to be worth the effort to haul it, even if the compressor doesn't work out. Motie ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Stock for $4 and no minimums. FREE Money 2002. http://us.click.yahoo.com/orkH0C/n97DAA/ySSFAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.com/2000/biofuel/biofuel.htm To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
