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I'm doing some testing of the new Sunnybrook concaves for CR's in rice this season. Mine is a CR8090 with twin pitch rotors & adjustable top covers.
The primary reason for looking for another concave is that the OEM is a reasonably good all round concave but I feel it could be better. Spitfire wheat (very hard to thrash) & the hair pinning problems of the OEM concaves in rice made the "fix" just that much more important to find.
I started the Sunnys off with what they thought would be OK (for rice) which is max thrash, then round bar, then the newer max round. You'll see in the pics what that looks like.
I left every other setting in the machine the same as running the OEM concaves.
Well the max thrash certainly lives up to it's name. I had to take them out as they are way too aggressive for rice. They would de-hull the rice - which is not desirable.
I can see huge potential for max thrash in cereals, canola etc as it will get threshed - no doubt about that. There is also another side benefit of the max thrash. You can put the left hand side max thrash in the right hand side concave if you just want to run the material through without turning it to powder. I would think this setup could possibly be used in the last segment (third) of the CR concave to greatly reduce sieve loading in canola. Some of you northern hemisphere guys could try it this coming harvest & let us know?
Back to the rice. I changed out the max thrash & put in round bars. I opened the concave about 3mm & backed the rotor off 30rpm -everything else stayed the same. Sample is as clean as a whistle. Noticeably using less HP. Overall, I am pleasantly pleased with the result so far.
The addition of the max round tri-frame at the rear of the concave is a big advantage. I would step out on a limb & say you could run all max round in rice, beans, corn etc & do a fantastic job. Once again you northern guys could try them in cereals. You may need one row of max thrash then all max round after that.
These concaves are going to be really tested out in the next month as we've had a far bit of rain on the rice with some of it flat, wet & mud underneath. It doesn't get much worse.
I'll post some pics of the "fun" we're likely to have.
The primary reason for looking for another concave is that the OEM is a reasonably good all round concave but I feel it could be better. Spitfire wheat (very hard to thrash) & the hair pinning problems of the OEM concaves in rice made the "fix" just that much more important to find.
I started the Sunnys off with what they thought would be OK (for rice) which is max thrash, then round bar, then the newer max round. You'll see in the pics what that looks like.
I left every other setting in the machine the same as running the OEM concaves.
Well the max thrash certainly lives up to it's name. I had to take them out as they are way too aggressive for rice. They would de-hull the rice - which is not desirable.
I can see huge potential for max thrash in cereals, canola etc as it will get threshed - no doubt about that. There is also another side benefit of the max thrash. You can put the left hand side max thrash in the right hand side concave if you just want to run the material through without turning it to powder. I would think this setup could possibly be used in the last segment (third) of the CR concave to greatly reduce sieve loading in canola. Some of you northern hemisphere guys could try it this coming harvest & let us know?
Back to the rice. I changed out the max thrash & put in round bars. I opened the concave about 3mm & backed the rotor off 30rpm -everything else stayed the same. Sample is as clean as a whistle. Noticeably using less HP. Overall, I am pleasantly pleased with the result so far.
The addition of the max round tri-frame at the rear of the concave is a big advantage. I would step out on a limb & say you could run all max round in rice, beans, corn etc & do a fantastic job. Once again you northern guys could try them in cereals. You may need one row of max thrash then all max round after that.
These concaves are going to be really tested out in the next month as we've had a far bit of rain on the rice with some of it flat, wet & mud underneath. It doesn't get much worse.
I'll post some pics of the "fun" we're likely to have.
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