Re: pros & cons of a 7088 vs 7120
We considered trading our '02 2388 for either a 6088 or 7088 last year but didn't. This fall we ended up renting a 1 yr old 7010 to harvest most of our corn. We never ran a 60/7088 but really like the 7010. Enough so that we traded for it after the 1st of the year.
If you haven't picked up one of the brochures from your CIH dealer I would recomend doing so as it will tell you all the differences between the two machines. It's really hard to compare them as they are two different types of machines.
Main reason we went with the 7010 is the way a lot of the drives are. Our thinking was the more we could get away from belts & such the better. On our 2388 we were constsntly having problems with the seperator drive belt, put 5 on one year and seemed to have to replace the rotor belt once a year. FWIW, our machine, though a '02 model, had the hyd cylinder engage instead of the pto & had the heavier rotor belt & shieves. It just seems to us that the rotor drive systems of the 10/20 series will give less problems, though no doubt more expensive to fix if you have a problem. Our dealer has a 7120 in the shop right now with a gearbox out.
One feature we didn't think we would use much but has came in handy is the ability to reverse the rotor. We had a lot of down corn this year & with all the damp days we slugged the rotor 4 or so times. With the 7010 we were able to open the concaves & power the slug back out in a matter of a minute or two compared to what probably would have been at least an hour with our old 2388 or one of the newer 88s. Another nice feature the 10/20s have is the self level sieves. We don't have much rolly ground but we felt we could see a difference where we do. Will also say that additional 75 peak hp really helped in poor conditions.
Couple other difference that we liked is not having the augers under the concaves, no return elevator to wear out, & the ability to change chopper speeds hydraulically.
I know several that have owned 2388s & purchased 7088s & like their machines. I doubt if you would be dissatisfied with either machine.
For heads we ran a 3212 (20") cornhead & traded for a 36' draper this week. Sounded as if you were considering putting your old platform on whatever you bought. While possible to do, our dealer & service manager highly advised against doing it. They said it works with the cornheads ( we had to put an adaptor on our 3212 to go from the 23 to the 7010 ) that we would be dissaisfied with it on our 30' 1020. Friends that have the 7088s all went to 35' 2020s. Some say they are alright & others don't care for them. Have yet to hear anything bad about the drapers other than cost. As dealer said, they haven't had anyone trade a draper in on a auger platform. Most of the ones I know with drapers on the 7010/20s are running 40'. We only raise 900 - 1,000 ac of beans so felt the 36' would do us. Ballance of crops is corn, no wheat.
Just my 2¢