DAHU S3
8.088,00 €
VAT excluded
VAT excluded
Why Choose us
4000 W
OF PURE POWER
1300 WH
LITHIUM ION BATTERY
60 KM/H
PEDAL ASSISTANCE
70 KM
AUTONOMY
Frame
The frame, entirely designed and manufactured by us, has an original design that sets it apart from the classic E-bikes on the market, evoking motorcycle-like shapes. The center of gravity has been kept as low as possible to ensure unique handling.
The position of the central load-bearing motor, to which the front end and the rear swingarm are connected, is one of our distinctive features present in all our models.
This has also made it possible to significantly reduce the weight of the vehicle, while still providing excellent rigidity, optimizing weight distribution and ensuring stability and handling when tackling and overcoming any obstacle, both downhill and uphill.
One novelty lies in the construction feature: it has been studied and developed as if it were a load-bearing body, a technique used in the automotive industry. The material used is aluminum, with parts stamped using cold-forming technology and parts machined with CNC.
Another novelty concerns the rear swingarm: as is common in the motorcycle world, the suspension is progressive. This provides soft damping at low speeds and for small obstacles, which becomes firmer as speed increases.
The Dahu S1 is equipped with an Öhlins 38 dual-crown fork, with 200 mm of travel front and rear that allows it to tackle any obstacle. Braking is provided by 203 mm disc brakes on both wheels, with a 29" front wheel and a 27.5" rear wheel.
Motor
The Dahu is fitted with a brushless SEM Motor, whose maximum peak power draw is rated at 4,000 W.
The new motor, still centrally load-bearing, has been improved in its construction and formal composition, with casings machined from billet, so as to reduce weight and increase rigidity. This provides, right from the start, the stability feel of a motorcycle but with reduced weight and the handling of a bicycle.
In addition, new dedicated helical gears have been designed and manufactured, engineered and branded by SEM to reduce noise.
The MotoBike is equipped with a new control unit, developed entirely by SEM, which makes this electric vehicle the meeting point between bicycle and motorcycle.
The pulses transmitted by the torque sensor, the throttle, and the speed sensor are processed by the control unit to respond precisely to every mechanical gear shift, so that the power delivered is always readily usable while riding.
Thanks to its nine mapping settings, the latest SEM model offers maximum comfort and performance in just a few clicks.
The "0 - OFF" mapping turns the Motobike into a bicycle. By selecting the first mapping, the Dahu transforms into an e-bike, through a pedal-assist system spread across the following 5 mappings. Starting from mapping number 4, it becomes possible to use the throttle and pedal assist simultaneously. With the last three mappings, pedal assist is excluded and the Dahu effectively becomes a motorcycle.
Display
One of the distinctive features of the Dahu is its new display. To complete the development of the new control unit, a renewed graphic interface has been introduced. The color LCD screen, measuring 72.5 x 54.75mm, contains all the information needed to ride the Motobike.
The display shows the remaining battery charge percentage, instantaneous speed, trip distance, total distance, and the mapping currently in use. The new control unit offers a choice of nine different mappings, in addition to the "0 - OFF" function.
On the screen, the mapping in use is highlighted both by a numbered label and by a light bar with a color scale. This allows for immediate perception of the mapping that has been selected. The curved graph surrounding the speedometer indicates the instantaneous power delivered.
The new display is fitted as standard with a custom-made protective cover, a necessary feature since our Motobike is a high-performance electric vehicle suited to competition and off-road use, and every detail is therefore designed to prevent damage or breakage.
Battery
This element has also been designed and manufactured exclusively for SEM; its shape fits perfectly with the frame and helps keep the center of gravity low.
Extensive testing has led us to find the best compromise between weight and efficiency: the Motobike is equipped with a Lithium-Ion battery, with an indicative weight of 6 kg and a capacity of 1,300 Wh.
As for range, 60 kilometers are guaranteed using the throttle alone on flat terrain at a constant speed (tests carried out on a test bench and on track). With the pedal-assist function and a smooth riding pace, the maximum distance covered can increase very significantly. In any case, should you run out of energy, you always have the option of pedaling your way back home!
Dual Drive
As with all our models, the Dahu also features a dual-transmission system that makes the motor independent from the traditional drivetrain. On the right side there is a classic 11-speed transmission, while on the left side there is a transmission dedicated to the motor. A notable feature is that the swingarm pivot is on the same axis as the motor transmission sprocket; this allows the chain to be fitted without the need for a tensioner.
On our models, the separate management of the two drive systems has always allowed the use of the throttle and makes it possible to move forward even without pedaling, thus making it possible to handle any riding situation — even the most technical climbs, the narrowest passages, or the most difficult obstacles.
