I farm just 1 hour north of the former Massey plant in Brantford, and my neighbor had a Massey prototype TX903 rotary combine running on his farm in 1981. It looked a little like the current Deere STS, but more like the White rotary of which Massey eventually bought. I remember the engineers talking about the 70 inch beast, and the only reason Massey didn't pursue production of the "770" was on account of the impending introduction of their rotary combine, which they felt would have superior capacity and performance over the conventionals. Massey also designed a hybrid cylinder_rotary combine (like a Deere CTS),although it never made it to the prototype stage. Unlike White, Massey didn't have a dedicated research plant, so many of their ideas were constructed by 3rd party machine shops and assembled either in the production facility in Brantford or a secluded shop. It was difficult for Massey to conceal their ideas, and the engineers where constantly "defecting" from one company to the other, taking there ideas with them! It's no secret that White and Massey didn't make good neighbours!