With Claas’s focus since 2019 on launching two all-new ranges of walker and rotary separation combines for mid-size to large-scale growers, farmers with relatively modest acreages could be forgiven for feeling overlooked, especially when the Avero and smallest Tucano were withdrawn.

However, Claas has now completed its combine range revamp with the Evion, a machine that brings large-combine tech to the lower end of the performance scale.

See also: Video: Claas launches Trion combine range as Tucanos are scrapped

This includes a “power-as-needed” engine and three-speed hydrostatic drive combination said to improve fuel economy by up to 10% versus conventional setups.

Two five-walker models have been revealed – the 204hp Evion 410 and the 231hp Evion 430, capable of handling tables up to 6.8m and filling grain tanks of 5,600 litres and 6,500 litres, respectively.

“Classic” versions provide all the essentials, while the “Trend” package brings additional features, including auto-contour control for the cutting table.

In what is said to be a unique approach in this performance class, the reel drive, feeder housing and front attachment reversing mechanism, as well as the threshing drum and fan variator, are all operated hydraulically.

And another first is claimed for the option of a more intense 72-knife straw chopper alternative to the standard 52-knife arrangement for growers wanting an optimum spread and subsequent incorporation of residue.

Threshing system

Both Evion models feature a 1.42m-wide crop channel and a 600mm-diameter multicrop threshing cylinder with hydraulic adjustment of the concave, which has sections that can be exchanged through the stone trap opening.

A beater follows the threshing drum to transfer crop to the 4.4m-long walkers that provide 6.25sq m of separation area – the same as on the Tucano 320, but without that machine’s overhead agitator tines.

Instead, redesigned centre risers are designed to loosen the crop mat more effectively and transfer it faster to the next straw walker steps.

In-cab technology includes the isobus-compliant Cemis 700 touchscreen display, which provides visual and audible early warnings of an impending blockage at the walkers.

An optional upgrade monitors crop flow and deactivates the cutting table and feeder to stop material coming in if a blockage or serious drive belt slippage is imminent.

On a practical note, an air compressor with three hose connections – near the cab, on the left above the rear axle and close to the engine – is an option that should simplify and encourage daily blow-downs.