Studies on Fieldchoppers
1961 Volume 23 Issue 1 Pages 23-26
Details
1961 Volume 23 Issue 1 Pages 23-26
We made some investigations on four forage harvesters, the two of which were imported from U. S. A. and the other two were made for trial.
1. Power consumption at the tractor PTO was approxi-mately linear with the forward speed of the machine, and the fiructuation in it was great in each machine. Taking it into consideration, it seems that Ja will require about 20 to 25 HP JB about 20 HP and A, B about 15 HP at the tractor PTO at the forward speed, 40 to 60cm/sec.
2. JB, a flywheel chopper type machine, consistently gave the shorter and more uniform length of cut than the other lacerator type machines.
3. There was no great difference in silage quality among these machines.
4. Field losses were less in B type which has 24 fixed knives mounted on the rotor., than A type which has 14 flails.
