Quoting Removed, click Modern View to seeLike most things in life, there are perhaps no absolutes, but many things come close & this is probably one of the latter. Boiled down to the basics, that light is connected between the battery & the gen armature & when those voltages are different it will light. At start up V-batt is greater than V-arm and it lights, then as V-arm increases to point that cut out closes, those closed contacts short out the bulb (now V-batt & v-arm are equal & you have same voltage on both sides of lamp) & no light. The 'absolutes' part comes in where under some circumstances/conditions/etc., the cut out doesn't close, but v-arm reaches v-batt and light goes out, but batt and gen are not connected. If this were to happen, the light should re-light as speed continues to increase, as v-arm will soon exceed v-batt, resulting in current flow thru lamp & once again giving operator a valid indication that all is not well. Not absolutely perfect, but pretty good, in my opinion.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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