All the "3 speed rears" that I ran across were set up a bit different. Both axles drive in all ranges, identical ratios, shifted them one at a time.
Low range, both in low
Intermediate, shift forward axle to high, rear stayed in low, power divider (center differential) evened things out.
High range, shift the rear axle to high, keep the forward also in high.
When running empty or even light load, could run the trans up to fifth, then shift both axles to high at same time. Thinking at the time, whether right or wrong, was that a straight 5 speed trans with a pair of 2 speed axles was less expensive to to repair in case of problems. Also easy to convert single axle to full tandem when weights started to increase. Just extend the frame, add another axle with power divider & WHEE, I now have a 15 speed full tandem.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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