Posted by agpilot on March 07, 2009 at 17:08:30 from (206.146.78.170):
In Reply to: IHC diesel posted by Alwaysafarmer on March 07, 2009 at 14:09:08:
Hello Always: The early history as I heard it was that in the 1930's great depression era, Waukesha designed an engine that could be hand started on gas due to low (6:1) compression which resulted in no need for a battery or any electrical system since a mag was standard back then. With this easy and cheaper starting system, money could be used to build a stronger engine internals for higher compression diesel which was cheaper power. Waukesha got this gas start then switch to diesel by designing the head with a 3ed valve and extra chamber. When the 3ed valve was open to this chamber, compression was low and exposed a sparkplug. Extra mechanical methods used opened a gas carb for starting but shut off when switched to diesel. When 3ed valve closed this extra chamber, compression went to 15:1 and higher for diesel mode. Important to remember this was the 1930's depression and wide use of internal combustion engines was still new to many. In fact there was even some Model T Fords still in use on the highways and many farms did not have electric or a telephone.(hard to believe?) So Waukesha had a good design for industrial use for that period of time. IHC used it then for tractors. Hope the reason behind this design back in the 1930s helps fill in any other info you find. ag
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