Combines sunnybrook rotors

For others who have looked at or tried the new Sunnybrook Generation II rotor you may wish to view the previous dated postings: 03_03_01 09_27_00 Thanks for your interest.

What rotor loss problems in cornIJ On older machines (and some newer ones) without the high-wire separator grate (and possibly high wire concave as well),rotor loss in corn was possible. The OEM rotor works great but rotor loss in corn is usually indicative of improper grate becoming plugged with cobs or that a concave adjustment is needed. And on 97 and later machines, we have the ability to tighten up the clearance at the separator grate so rotor loss should almost never be a problem on these newer machines. If the wires on your separator grate are as close together as those at the first section of your threshing concave, I'd recommend either replacing the grate with a high-wire one through your dealer or simply pull out every other wire in the separator grate so cobs won't become lodged in the holes. Should take care of the problem and in my opinion, every machine doing a substantial amount of corn should be similarly equipped. AGCO should just make hi-wire separator grate standard for corn_soybean machines. P.S. Pulling out the wires or installing the hi-wire grate doesn't hurt the machine's performance in soys, small grains, and other crops either; actually works a bit better than standard grate 99% of time.

Your description of cob filled separator grates sounds like what happens to the concave in my R60 (P1). Removing every other wire helped but now it plugs with larger pieces of cob instead of small ones. Do you have any adviceIJ

I didn't think it possible to get any plugging with every other wire removed from the narrow spaced low wire concaves. If you haven't plugged the exposed holes from wires being removed you could try that. Pluging the holes should be done in the small grains if wires have been removed because concave can plug while in operation. Seams like straw will spear holes and build which can prevent smooth flow threw concave. You can get jobber concaves with wide spaced wires for that P1 but am unsure about hi-wire.

The rotor you are asking about has been out in a limited n for two seasons. We have not shipped one from here that would have been used in rice. This is the first season for retail sales of the product. The boronized bars should last well if you decide to go with the new rotor. I can be reached at 780-789-3855 if you wish to discuss. Thanks, Gerald

Thanks for the running endorsement, I'm glad you're happy with the performance. We recently completed some independent testing of the design at a western canadian machinery institute. In the lab, the boronized rasp bar in this design configuration had about a 16-17% decrease in input power over original equipment. The tests used wheat straw at various feedrates between 300-900lbs_min. We also took measurements of the downward forces on the concave (30-40% reduction through the same range). The processor was run independently using a tractor's PTO with a torque transducer. Being a chronic techno-junkie, it is amazing to see the output readings at 1_800th of a second intervals. You can see the torque rise as each rasp bar makes contact with the front of the concave. We are not sure at this point how much benefit the reduced coefficient of friction is with the boronized surface. German testing showed it reduced friction significantly over steel and_or chrome. It would be great to try a boronized cage some day. Tell your brothers that the testing was done on 9610's. I'd post info on the Deere page but would hate the "death of a thousand cuts" those green guys would subject me to! haha. Give me a shout when you get into rice if you get a chance, thanks again.

Does Sunnybrook have a homepageIJ I can't imagine a 72 with even more power than it already has...this is something I have to look into! Happy harvesting!

Here is Sunnybrook's web address. http:__www.sunnybrookwelding.com_

Generation 1 has thresher and separator bars like the N series. Generation 2 has 32 P3 style bars. Both are high inertia and enclosed. Photos are on our website. sunnybrookwelding.com

Dose sunnybrook use gleaner's p3 bar or do you use your own the same size as gleaner p3IJ I thought I read on your web page that on concentional cylinder that there was two differnet sizes of bars on some of them, is this trueIJ