Generally speaking, a generator wastes half the power it could potentially make due to it's lack of recfifiers. It's like having a four cylinder engine that only fires on two cylinders. It also relies on the charge output to be carried by brushes which presents a wear and design problem. Alternator makes full use of its potential and does NOT use brushes to carry charge output. That is a HUGE advantage.
As as far as 6 volt versus 12 volt, they are not equal. They could of been, yes, but for the most part, things never evolved that way. Most 6 volt starters with the proper sized batteries do NOT have equal cranking torque and RPM when compared to their 12 volt counterparts. But, some of that is due to better design over time, and not just the voltage differences. With 6 volt starters, there were size limitations to get more cranking power. As the voltage climbs, more cranking speed can be made in the same physical size starter.
One example is these two Delclo starters used on the Continental Z134 gas engine. 6 and 12 volt versions:
Delco 1109457 6 volt - no load - 5.7 volts, 60 amps, 6000 RPM.
Delco 1107654 12 volt - no load 10.3, 75 amps, 6900 RPM
Both have equal 11 ft. lbs. of torque when completely locked and not turing, but other wise the 12 volt starter always turns the engine faster.
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Today's Featured Article - Stories From Old Farmer - by K. Pratt. Old Farmer, a.k.a. Dale Jensen began posting messages to our discussion forums at the grand age of 75. With extensive knowledge of farming and tractors, he valued the past and the ways that went with it. He shared these values with us until shortly before his passing. I spoke with Dale in his last days and requested his permission to share some of his stories with the readers of our magazine. He agreed, and provided the
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