Total lack of understanding here. Power is transmitted more efficiently at higher revs. 1000 rev pto’s were developed when most tractors were under 50hp and the shafts were not capable of transmitting higher torques.more then 600 rpm is not possible with 100 HP. And 600 ist optimum speed for mixing. The mixer is ready for 1000 rpm and 150 hp
A pto can and is indeed is designed to run out of a straight line . However when it is turning outside the straight line the joint itself slows down and speeds up on every revolution in which time energy is expended. This energy is expressed as heat. The greater the angle the greater the heat."Multiplying the speed up to 1000 halved the torque." - i know... But when i take stronger tractor on the mixer and run it with 900-1000 rpm, often the mixer is getting not enough slurry and starts to vibrate.... my question is more about the pto. i have seen, the is a 80° and 50° wide angle pto availble. Whats the difference?