Combines encloed rotors

Bison's love them crops. Trouble is we have not sized one into small P3's yet. I'll have to measure up and see if we can't built a couple for next season. Don't know if benifit will be as large for small P3s for they worked notoriously better right out the the box as compared to large P3s. Of course there were several reasons for this and as we figured out what to do to the large P3s to try match small P3s persentage wise we went back to the small P3s and did the same. Take care

I know a guy that ran both versions in wheat, soybeans, and wet corn (30-35% 200+ bu) He likes them alot. Says no class eight could likely run with his class 7s. This guy had a Bison and loved it in wheat and beans. Then he ran in that wet corn and couldn't get rotor loss under control. This was an early Bison that got sold out the back door of manufacturer before it was ready to sell. long story but there was a reason I wouldn't sell them yet. It bit patent holder like I figured it might. Anyway I got him to correct a few things that was wrong with his cage setup and Bison. He corrected some of the things and did much better in the wet corn. He than finished off a couple other of my suggestions before milo and did a fantastic job right off the get go. He didn't have the confidence it could do as good as he wanted in wet corn prior to this season and he had the chance to sell to someone with alot of milo and no wet corn so he sold it. He put in the PFParts rotors and is very happy. I wish he would of been able to run correct setup Bison next to these rotors but didn't happen last I talked to him. He does admit a huge improvement was made with the steep thresher helicals and highly recommends no matter which rotor. You might want to check with PFParts to get the guys name or number. I don't know what the deal was but I might add that a guy with four R65s (stock HP class 6) had two of the Bison equiped machines in same fields all week long with a pair of class 8s (not AGCO) and he figured they didn't gain 10acres on him all week. They were all pushing 36' Mac dons. I realize some guys just don't push there machines so who knows!!! Take care

thanks for reply Dan. Information on this site is making my decision on buying or modifying a rotor alot easier, that bison does sound impressive. Keep those posts coming guys

Well as you know I didn't push you into Bisons for both machines. I would of rather you run Sunny in one and Bison in the other. I realize you needed to make the investment in rebuilding Sunny or put that money toward Bison. It would of been nice if you could of droped straw to check actual rotor loss. I realize this would of been very hard also with your inovative spreading system. I don't doubt you had some loss for your trouble cleaning up sample. The trouble cleaning up sample would certainly make me think you have unthreshed grain getting finished off with the chopper. There has been no complaints of rotor loss if sample isn't a bearcat to clean up which makes me think seperation side is doing its trick. The Bison certainly will not finish off any threshing on seperation side. The guys complaining about dirty sample have admited it is no worse than other color machines per reports at elevator. I know this is no excuse for the guys with Gleaners are used to second to none threshing. A couple of these guys went from the standard Gleaner eight bar with the narrow rasp bar over concave straight to Bison. There main trouble with hard to thresh was frosted and or baked in kernals not necessarily the variety of wheat. I wish I would of talked to you while you were having trouble for I believe more than the two or three concave filler bars you installed would of caused more grain on grain threshing. This likely would of got you below the .5% dockage you were able to achieve and I doubt the seperation side would of had any trouble seperation the threshed crop. You should see some of the loads of hard to thresh wheat that come by our door. It's hard to imagine what is going out there choppers. I did look closer to see if we could mount more threshing elements between existing elements and it does look like a guy could have mounts there for bars if he would wish. I think what would be better is a special built rotor with six threshing elements. We'll keep brainstorming on what it would take to get you closer to Zero dockage and loss. Take care

Dan, Rolf and I have had a look at a way of designing an alternative thrashing system on the Bison if we ever found it neccessary. We would simply design and build thresher bar support "bridges" right across between the present in line threshing segments supports which would then mount the more convential thresher bars. Pretty easy to do as the "bar support bridge" could just be slipped in and out of the segment supports and there would only be 4 bolts to undo to change each support. The only real problem is that there would be a lot of threshing capacity in the centre of the thresher with an eight bar overlap and only four threshing bars on each end of the thresher. The four bars on the RH, gearbox end would not matter as that material would probably be further threshed in any case. The lH threshing is a bit more of a problem but I think I have a solution worked out for that as well. You have probably already thought of something like this in any case! [ We are just using a similar idea to that where I got an American owned and operated CIH combine with a speciality rotor working in our Australian wheats, it was bloody hopeless at threshing anything!, by designing a long bar mount across the sheeps foot mountings which then mounted the normal long threshing bars.] I believe the Bison can be further adapted without major design changes to cater for even more difficult or non standard field conditions by very easily fitting alternative threshing systems. The current design leads to the ability to make reasonably quick in field changes if ever neccesary.

dumfrmr Bison can thrash! just needs a some bits from the tool kit at the back of the shed! Were in lentils at this moment, and been very low yielding (not much MOG) we have a hard time getting clean sample because of lack of material to thrash against! Tonight 21 degrees C cool and damp air from the South! (150 km from Coast) Had a very poddy sample, changed to three filler bars and have returns back to Drum and running 200 rotor revs, (need my 40+ft flex front for these things to fill the header! What you recon Dan know of any 20 ft flex 8000 Rom And Me can rig upIJIJIJ) And it cleaned up sample no end, didn't get any more cracked seed than I had before hand! the R Gleaners need to have every thing Threshed the VERY first time it cross the Concave (Think Conventional combine!) it makes everything else Oh so much easier to sort out, less repeats and less cracked grain! Bison is by far the most silky smooth the R62 has every been! these lentils are Green in the vine still, and there is no way a standard R series (Pre Mods) would be going in our crop now! and if it was it would be thumping, ear whacking, door blowing piece of crap! Rolf

Just so you know Rolf. The nick name dumfrmr doesn't properly represent this guy. He would rank right up there with the best of the best in my book. I think you would have a blast visiting each others farms. If he come to see you he would also have to go spend some time at JRs. Anyway I think we'll get his machine setup to thresh the toughest of the toughest even if it takes another set of bars. I read your notes below and will consider all options. Thanks for that. I don't know about taking a 20' head and adding 10' to each side but a 35' 8200 would be a step in the right direction. You might even find some factory installed flywheels on the 8200 similiar to known machine in Australia. Keep up the good work and take care.

Rolf when combining green stem lentils or chickpeas with my old coventional massey i had to run lots of fillers and keep things tight to do a decent job of thrashing eventualy things like concave and chopper would start gumming up with green plant material; have you ever had this problem with any of your setupsIJ

snipe Our biggest problem with green_dry crop is the knife and knife fingers! they gum up heaps, my max speed is around 6km,s_hr because I cant cutting well enough any faster, and rest of combine is never full, So I need one of Dans 8200 35 footers to help with feeding the "Grain fed Bison" (Grin) Rolf