Hase introduced a new KettWiesel in the spring of 2007. The new KettWiesel AL has a lighter aluminum frame and lighter is always nice. The KettWiesel’s road holding, maneuverability, and stability remain unchanged.
If you want a Long-Wheel-Base (LWB) recumbent with Under-Seat-Steering (USS) and rear suspension the Hase Tagun is about your only choice. The rear suspension does a good job of soaking up bumps but it also adds a 5 to 7 LB weight penalty over other LWB USS bikes.
The Hase Kettwiesel and Trigo are both light weight, quality delta trikes. Wondering if you prefer delta or tadpole tikes? Come ride several, see which is best for you!