In 1968 the Rubin appeared on the market, taking its place in the Köla range between the Coronet and the Hydromat. It used the same Perkins engine as the Coronet, rated at 72 hp. In the parallel model, the Rubin X100, there was a 90 hp engine. Surprisingly, the engine was mounted in the old Köla fashion on the driver’s side. The cutting width was 300 cm, and the lower-powered version was also available with a 260 cm header. The threshing‐drum width (106 cm) and the dimensions of the sieve and straw walkers were considerably larger than on the Coronet, even though the overall size and price difference between the machines was small.

Shortly after the Rubin’s introduction, KHD acquired the Köla factory, and the Köla Rubin was initially renamed the Fahr Rubin. In 1972 the model designation changed to M 900, the engine was swapped out for a Deutz, and it was relocated to the rear of the grain tank.

The brochure image apparently shows some kind of prototype, since its unloading pipe isn’t recessed as on the production models. The slope of the top of the tank in the photo also doesn’t match the rounded shape familiar from the Fahr machines.

The last combine presented under the Köla name was the Corall, similar to the Rubin but with three straw walkers. It was powered by a 69 hp Perkins engine and had an 80 cm-wide threshing mechanism. Its cutting width was 250 cm. The Corall was also sold under the Fahr brand in 1971, but its production was then discontinued, and that size class was continued with Fahr-based models.

This is an automated translation. Please report any issues in the translation.