Razors Edge concaves use a variable spacing design and sharpened, notched bars which improve threshing performance, according to the company.

New aftermarket rotary combine concaves designed for all crops

Variable spacing on Thunderstruck Ag's Razors Edge concaves eliminates need for cover plates

Having one set of combine concaves that can handle all seed sizes efficiently without the use of cover plates can be a timesaver when switching fields. Winkler, Man.-based Thunderstruck Ag has just introduced its own Razors Edge concave design to make that a possibility. “We’ve been working with concaves for the last seven years and […] Read more

1974 Roto Thresh brochure

What’s different about the Roto Thresh?

The Saskatoon-made combines sported a unique separating system

It’s likely safe to say not many people farming today have heard of a Roto Thresh combine. That isn’t surprising. Only 50 were ever built by the small company that existed for just a few short years more than four decades ago. According to the Canada Agriculture and Food Museum, “The Roto Thresh combine was […] Read more