Combines 9720 8590

m_i__nuts

Guest
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.
 

David

Guest
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
 

Greg

Guest
The 9720 has a 31.5x168 inch rotor compared to the 27.5x140 inch rotor in the 8780xp
 

m_i__nuts

Guest
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
 

David

Guest
How big of a grain bin and how much horsepower do the 9720_8590 haveIJ
 

m_i__nuts

Guest
The book is in the shop, but I think I am very close in saying that the hp. is rated at 248 and the tank holds 263 bu.
 

lee_W

Guest
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.
 

ferge

Guest
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!!!
 

jw

Guest
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
 

lee_W

Guest
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.
 
 
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