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  #1  
Old 20-05-10, 06:57
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David Pope
 
Join Date: Jul 2003
Location: Eston, Sask, Canada
Posts: 2,249
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DC just works better than AC. I have a 220 v powerline AC-DC welder and I never use it on AC. If you use DC welding rods such as 6010s you get a steadier arc along with better penetration.
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  #2  
Old 20-05-10, 07:28
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Graeme Jamieson
 
Join Date: Feb 2003
Location: Williamstown Vic Australia
Posts: 599
Default DC welding

DC is best for mild steel, carbon and stainless. You only definitely need AC for aluminium.
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  #3  
Old 20-05-10, 09:08
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Andrew
 
Join Date: Apr 2007
Location: N.S.W AUSTRALIA
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As mentioned DC welding is good for penetration and starts the arc beautifully
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  #4  
Old 20-05-10, 09:55
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WO8 C15A 142736
 
Join Date: May 2007
Location: Batlow Road near the Cow & Calf
Posts: 1,958
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I have the PTO version and it is a great welder for the big jobs. Burning a 4mm rod into one inch steel on 200 makes a 40hp tractor work. Mine has a 240 volt outlet as well but the neighbours older one has 32 volt power.
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  #5  
Old 22-05-10, 02:03
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Philip
 
Join Date: Nov 2008
Location: Belleville
Posts: 75
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The Lincoln SAE S.A.E. 200 amp portable welder, along with it's bigger cousin, the 300 amp were popular for pipeline work and repair welding. Up here most have the Continental 4 or 6 cylinder flat-head gas engine. Some were made with a diesel engine but they are not common. 7018 is a very popular DC rod and in all the years I used a 200 for heavy equipment repair, that's all I used. The 'Shop Floor Talk' forum could help you out with any questions also.

I've never heard of that engine you refer to, but I believe the Hercules was used on the very early models. The vacuum idler is very temperamental and in 1972 the unit was updated with an electronic idler. There is a company in the U.S. that sells conversions for both the idler and the magneto, and supports restoration of these. They had a very stable arc and were very popular. Phil
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