Never drove a heavy truck with a syncro, just non sync boxes. Keep in mind a road ranger does have synchros....on the air shifted range change, i.e. 5th to 6th on a 10 speed, the switch flick is syncronized with an air shifter moving it, the main lever throw is not.
Crash box in a tractor is different story.
I run both synchro and unsynchro tractors, in road haulage no real difference pulling rolling loads on a hard surface at speed, but I don't have to clutch the unsynchro tractor, just float the gears like a heavy truck.
In the field, the crash box is a pain, very rarely can you make a shift on the move, must come to a complete stop. Synchro tractor stab the clutch and move the stick. Can even do that with a non rolling load if needed.
Powershift really shines in tillage work, upshift and no interruption of power, just accelerate, sync and unsync you come to a stop the moment you clutch.
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Today's Featured Article - Restoration Story: 1929 McCormick-Deering 10-20 - by Randal Simmon. On July 4th 1998 my dad and I was sitting on the front porch when he said that he was going to sell his two 10-20's to a junk man. He said that the junk man was going to give him $500 for both of them but he hadn't received the money for them yet. So I went into the house and wrote him a check for $500 and bought them myself and said now they are mine. He had bought them about five years before thinking that he was going to restore them himself. After five years sitting in the barn, he changed h
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