Was at a dealer sponsored workshop this fall and they said that an updated version of the 8590 is due out the fall of 02. Said that it would have the rotor of the 8590 with the hydraulic drive system of the newer machines.
I am not familiar with the White Combines. Would the 9720 be comparable in size to a R72 or 9750STSIJ In other words, Class 7 machines. Why then is the 8780XP only a class 6 machineIJ
Yes, the 8590 -9720 is a class 7 machine. Don't know why they quit building it, but must have figured that there was a bigger market for the class 6 machines at that time. Probably could only justify building one rotary combine with things as they were in the 80's
We have been running a 9700 and a 8590, we use them in corn, beans, milo, and some wheat. We use a combination of different sizes of concaves for all crops. The biggest weakness is the weight of the machine, when you have a wet fall.
One very common problem is the actuator that puts the thresher clutch in gear -- with age the electronics "dies" -- we bypassed that with a dpdt switch in the cab with an inline ammeter to tell when when it is fully engaged -- also put in a circuit breaker just in case we forget to flip the switch!!!! Brakes can also be troublesome!!! Excellent machine for it age and relatively easy to work on!!!
other than advances in operator comfort and additional horsepower, what advantages would the the newer Massey rotaries offer over the 9720 series. Also, lee you refer to weight issues. Were these machines overdesignedIJ Thanks
The newer combines are a little easier to work on but the older one's are not that bad. I prefer the top drive on the clean grain elevator over the bottom drive on the newer one's, kind of like the old Minne Pearl joke when someone asked her brother how come he was pulling that chain down the street, he said did you ever try pushing one. These mahines are well built for the most part, and they are a big machine for their day. If I remember right the rotor weighs 1400 lbls.