This thesis project by Vojtech Sojka Superior bike seem to change the game not too far from the norm. It has a hydro-formed aluminum frame with the engine located on the bottom bracket for a clean look and a better distribution of weight of a motor in the rear hub. The battery is also located in the seat tube, and a belt drive with a carbon hub Shimano Alfine completes the powertrain.
The designer says:
"After trying to design the frame with the look of the diamond standard with a complex system of exemption, I decided to remove the remaining seat, which allows the user to bring up easily. This solution requires a lower weight gain (about 200 grams), but the belt is handling much easier. It also gives a slightly larger deviation of the "triangle" on the back, which improves driver comfort. "Speaking comfort, range Schwalbe Super Moto 2.35 "tires also ride a cushion. Although the complex design of the bases short Sojka felt like the release of additional tire was a good piece of work thanks to its design.The solution features a rear-facing dropouts and a brake caliper rotary Bride. "Compared to other solutions much easier to put the correct position on the rear wheel and brake it - the entire bracket moves only with the rear wheel so that the brake is always in the right position. "
Hopefully, Superior will continue with the concept, and we'll see the continued development of the Sojka design in the near future.
Designer: Vojtech Sojka for Superior Bikes