rod
Guest
You will need wide spaced concaves for barley or you will damage the barley and throw a lot over the back end. Wide space will get the barley out of the concave quicker. Our 2188 will do 5 mph in 30' of 80 bushel barley and not throw any over with wide space. A neighbor with narrow space on a 1680 had to run at 3 mph in the same crop and he had a lot of barley going over. If you buy a used set make sure they are not bent.