In Reply to: TX66 posted by TIM on April 04, 2002 at 11:40:04:

We have grown a lot of high yielding AC Barrie in southern Manitoba, typically it's hard to thresh clean. We're careful to keep the cylinder speed fairly low (around 860 to 880 rpm under load), concave clearance around 5/16", and have at least the first filler plate engaged. Don't be afraid to let the rethreshers do a little work either. But here's my disclaimer: Our approach depends more on rubbing than on impact, therefore you need good rub bars and true concaves. We also use a similar approach to achieve better test weights in oats. The downside: This isn't too effective in damp straw conditions because the walker losses want to get out of hand. Having your fuel pump tweaked to the high end of the spec for both power and high idle speed doesn't hurt either.