Combines Rotor loss In Wheat

[Farm_Kid2]

I think I would take the 3rd cover plate off and see if the whitecaps get any worse. If not, then maybe take them all off. That, plus slowing down the vanes might be a quick, cheap fix. You could consider puting the rice spike bars over the rear of the rotor. I would probably replace the Gorden bars on the rear first to get rid of that angle. The spikes may help promote agitation of the crop and increase separationIJ large wire concaves with cover plates are a nice way to go. I think I like that better than small wire concaves in wheat, and you have lots of flexibility in other crops.

 

[ian]

I am also in On, email me with your info, I am operating a 2388 , 120 bu wheat with nothing going over the sieves or out rear of rotor. rdbreak@rogers.com

 

[Ian]

Your rotor speed is to fast , go down to 700-750 max. Rotor vaines should be in middle pos. Try this .

 

[hop_a_l]

I have not got to run my 485 in wheat yet, but on the 9600's I would tighten the concave, speed up the cylinder. Then adjust the sieve's. And run my air at about 1,250 rpm. I try to save everything and then clean the sample up. Don't know if it helps, but it didn't cost you either.

 

[tobaboy]

I'm not getting any sieve loss at all. My wind is turned right up, my sample is pretty good. If I run a really tight concave then I get too many white caps, if I speed the cylinder up with the tight concave then I have just as many white caps, but in addition to the white caps I get cracking, the only way I can get a clean sample is to open up my concave, I know this sounds weird but its true. I just cannot eliminate the rotor loss. It rained a bunch last night so it will be interesting to see how this changes things.

 

[kp]

Make sure the rotor cover plates are in, not out. That will help. You spelled out our biggest beef with these machines - they work well in tough conditions, in fact the best in the industry by far. In dry conditions you might as well run a TR 75...you just can't keep the grain in. We would have problems overthrashing and overloading the seives, not with rotor loss though, that baffles me. Did the rain help thingsIJ

 

[justapurrin]

heard of a wierd one last fall when someting similar to this happened and couldn't figure it out for the longest time, come to find out one of the rotors was not turning, and the other was doing all the work for the two. the drive connector slid over next to the rotor drive gear case thus stopping it from turning and forcing everything through only one rotor. might be worth a try.

 

[tobaboy]

All the loss is from the rotors, so I don't see what putting the plates back in would do. I should find out tomorrow if the rain has helped us out at all. This is year six with a lexion and I have never had this problem, I'm baffled.

 

[tobaboy]

I'll give it a look in the morning, thanks.

 

[Farmerman]

This is only our second year with the 480 so you will have more experience. Putting in rotor cover plates can only make it worse. We have been doing CPS wheat running the concave fairly tight (8-10) and the cylinder anywhere from 700 during the day to over 1000 at night. Rotor loss generally means too high cylinder speed. How slow have you tried running the cylinderIJ Is the feeder chain possibly chewing up the straw if it is that dryIJ What speed should we be able to run under normal conditions in CPS wheat yielding 80 to 100 bu_ac with a 36 ft. header. We can only use about 50% power being the losses start coming up on rotors or chaffer.