Combines CDF in wheat

[brassring]

Dang cornhead, you had the question I wanted to hear the answer to. but I guess no one is running a cdf in wheat. I have been looking at a St. John's enclosed concave price suits me better. lOl but I was hopeing to get some input but I guess no one runs one. good luck and if you find anything out please post Thanks Bob

 

[silver_tech]

works fine in wheat takes a little less hrse. dosen't chew the straw up as much but does nice job

 

[turbo]

A CDF rotor will work very good in wheat with 1_2 inch cylinder bars on thresher side. Have not tried 3_4 inch on thresher side yet in wheat. They are a very smooth running rotor.

 

[K_stater]

I have the St. Johns and it works great in wheat and beans - haven't tried corn or milo yet. Straw isn't what you'd get from a walker machine, but maybe better than most rotors.

 

[tj]

Quick description of diferences between St. John and CDF rotors: St. John rotor always at full diameter. Rotor bars on St. John rotor are mounted flat, as opposed to tipped forward as on CDF. This enables use of 3_4" space bars in all crops, and rotor feeds more aggressively -- won't slug in soybeans and wet corn as CDF occasionally will. less cylinder RPM required -- less likelihood of grain damage, and trash isn't torn up as badly. Discharge paddles eliminated on St. John rotor. No reverse bars have ever been required on a St. John rotor. Hope this helps.

 

[turbo]

Makes sense. How about you make me some shims to make my CDF rotor 25 inches in diameter on threshing side only. And then taper the shims in a wedge so the bar sits flat. DO you think that would workIJ I am not sure how the bolts would pull up flush on the mounting plate. they would be at an angle. I will have to think on that.

 

[tj]

First thing that comes to mind is that you'd have a fairly tall flat area between the bottom of the bar and the top of the tapered leading edge of the mount. This would add a lot of stress to the bar mounts -- it's likely that the rear supports under the bar mount would fold, or that the extra stress might pull the welds at the front of the mount. In order to install the bars you'd also need a shim under the mount and even if there would be room to install in a bolt from underneath the bolts would be pretty long and I could see where the length could cause some wallowing unless the shims are welded to the bvar mount. Simplest (and likely the least costly)would be to just replace the mounts with taller with a leading side would taper fully down to the rotor. Hope this is understandable. Terry Welch

 

[turbo]

Would you make some to weld on a CDF rotorIJ

 

[tj]

Yes, we could do that, but we'd need the CDF for a pattern in order to make sure that we'd have the correct height and leading angle on the mounts.

 

[NDDan]

tj, Have you found you need to install discharge paddles on your rotor for some conditionsIJ I see one up hear had some installed. He said it wouldn't discharge properly in some condition. I didn't quiz him on what crop or condition. I can't quite figure out why rasp bars alone wouldn't do it especially with them fastened flat. Also do you think turbo could just shim bars with 1_4" stock to get it half way between standard and CDF beings he is having good luck the way it is. Or shim with 1_2" to get back to original height or do you think that would tip the bar to much the wrong way compaired to yours. I've heard of plenty CDFs in Canada with all forward bars working well in wheat. Don't know if they had narrow rasp bars over thresher. Sounds like they ran smoother than standard rotor but havn't heard of any good comparisons with other rotors in wheat. Should be some good comparisons within another year.