Posted by RN on September 26, 2010 at 13:42:19 from (75.128.248.96):
In Reply to: Re: distillate posted by 4020deereboy on September 24, 2010 at 22:57:38:
Tractor fuel? Depends some on states laws- the term sometimes used as untaxed gasoline base fuel for agriculture use. A rough mix of 1/2 gasoline and 1/2 kerosene was noted by poster as sold for farm use in 1950s as "power kerosene/tractor fuel"- was good for distillate burning tractor and gas JDs (this was JD board post?) and not taxed, use in car resulted in noticable smoke. British had a fuel called TVO- Tractor Volatizing Oil- that need hot manifold chambers, air preheat- was a mix of about 10/15% gasoline(taxed), 10/15% diesel(taxed) and about 75% heating oil(untaxed). Hesselmann engine design used spark plugs and diesel like direct fuel injection to run on basic kerosene after initial start on gasoline. Waukesaw engine builders made them for multi fuel use for generators and some trucks, military vehicles, Swedes used them in Scania trucks and utility use- gas mix would run in winter and start better than straight diesels. IHC had their start on gas, 3 valve head with fuel injection and starting carb manifolds, spark plugs. 1940/1941(?) MD, 400D, WD6, WD9, EK40(?) until the 560D came out. This started on gasoline with 3rd head valve open to a spark combustion chamber, when engine warmed after say 5 minutes the switch to diesel was done- 3rd valve closed, gasoline shutoff to carb and diesel injection started into now warmed head chambers that had about 14/15 to 1 compression instead of about 6 to 1 compression when gas combustion spark ignition chamber valve was open. Advantage was no seperate starting motor for diesel, direct heating of head. Lots of different engine designs from 1920s to 1950s that you younguns don"t get taught about. RN
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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