The THYS 250 was an ongoing study for a follow-up model for the 222. After the THYS 245 prototype I tried to build a similar very low and fast rowingbike, but with the addition of an asymmetrical rear wheel. The frame tube was in the centre of the bike, the wheel on the left side of the tube and the Snek on the right side.
Large wheel bearings were placed in the frame tube. A very interesting experiment but not successful.