Posted by Hendrik from Germany on September 06, 2015 at 01:42:24 from (91.97.60.38):
Sorry for delay... here are the promised pics of the 1943 FAHR HG 25 wood gas tractor:
This is the left side of the engine. It is a two cylinder Diesel engine engine converted to run on gas. Wood gas in this case. You can see the spark plugs.
This is right side of the engine. You can see how much room all the wood gas parts needs. There is a "boiler", some radiators, many pipes, filters, levers, rods, valves and so on.
Let's start the engine! Well, at first lighten up the coal in the lower part of the "boiler".
Wait some minutes, then start cranking it! Well no, the owner cranks a blower, which sucks air through the glowing coal until flammable wood gas comes out of the end of the pipe at the blower. It takes fifteen minutes of hard cranking action!
Can you see how it glows deep in there?
Wood gas powered engine need a very special fuel. It has to be wood of the beech tree with a certain humidity and special size.
This is how the FAHR HG 25 looks from the front. It's no beauty of a tractor but it worked in the hard years of WWII when there was almost no fuel available for people in Germany.
Wood gas vehicles have two radiators. One for the engine coolant, one for the wood gas.
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