Jim Pollock
Member
I'm getting my 55 ready to cut beans and this will be my first time ever operating a combine and the first time this machine has ran for about 15 years. The book for my combine is at work but going from memory, I think the cylinder needs to run about 600 rpms. The beater shaft runs about 635 if I remember right. The only drive sprockets I have are a 42 and a 27 tooth. I actually have 2 sets because that's whats on my parts combine also. With the sprockets I have, the only way I could get close on my rpms is to use 2- 42 tooth sprockets or 2- 27 tooth sprockets. How critical is it that you run the proper cylinder speed?
I have read a lot about how guys need to run the cylinder faster when the beans are tough and then slow it down as they dry out. But with the sprockets I have, I am limited. I do have a gear hobber which we use to make gears for pulling tractor transmissions and I have the proper cutter to make some new sprockets. So If I were going to make a couple different tooth count sprockets, should I just go 1 tooth increments, 2 teeth or what would be a good number?
I have read a lot about how guys need to run the cylinder faster when the beans are tough and then slow it down as they dry out. But with the sprockets I have, I am limited. I do have a gear hobber which we use to make gears for pulling tractor transmissions and I have the proper cutter to make some new sprockets. So If I were going to make a couple different tooth count sprockets, should I just go 1 tooth increments, 2 teeth or what would be a good number?