Mecatecno Dragonfly 2.0 (Elektro)

      Mecatecno Dragonfly 2.0 (Elektro)

      > CONCEPT: IMA (independent motor assembly)

      > SPECS:

      Motor: BLDC 15Kw, 48V, oil cooled.

      Gearbox: 5 speed.

      Clutch: Multidisc hydraulic spring system.

      Housing: Combined 6082 T6 / 7075 T6 Aluminium CNC milled block.


      IMA is a system that divides the power train in two differentiated blocks: the electric motor, and the gear/clutch box.


      MOTOR: This architecture allows a clean and more convenient motor
      maintenance, better electric isolation, and a very fast "in-race" motor
      replacement in case of failure.

      MULTIDISC CLUTCH vs DIAPHRAGM: Although it is three times heavier, we
      have shifted from the former diaphragm clutch to a spring one because it
      provides a better control, higher precision, higher inertial properties
      and more setting possibilities. This turns into a more sensible control
      in classic riding style or a faster response in modern riding style,
      depending upon the chosen setting.

      SPEED GEARBOX vs SINGLE SPEED: Including 5 speed allows a higher
      control in sections and a more comfortable ride in intersections. It has
      also a direct impact on energy savings.

      > CONCEPT: CFA (combined frame assembly)

      > SPECS:

      Main frame: ø18mm CroMoly tube.

      Side tie bars: CNC milled 6086 T6 Aluminium.

      Skid plate: 6mm 7075 T6 Aluminium.

      Structural motor plate: CNC milled 7075 T6 Aluminium.

      Anti twist skid plate clamps: 6082 T6 Aluminium.


      is a system designed to take full advantage of the electric propulsion.
      This means in other words, not having to stick to the geometric rules
      of the thermic bikes.

      general terms, a thermic bike frame has to be structural by itself. All
      elements are hooked to it, and it is subject to a great deal of weight,
      tensions and constant vibrations. As opposed, the Dragonfly frame is
      not structural by itself. Like the human body, in which the
      bones wouldn't stay in place if they weren't tightened by the muscles,
      all the surrounding elements participate structurally adding strength
      where it is requested. This concept, together with the fact that the
      number of elements is much less, quite lighter and free of vibrations,
      allow a great deal of benefits. These are some of them:

      > General reduction of tubular frame weight and dimensions.

      Better distribution of the suspended mass and better placement of the
      center of gravity that has a direct impact on stability, balance and
      weight sensation.

      Great control over frame rigidity with hi impact strength on the
      central area, and controlled torsion close to the steering pipe that
      allows for a smoother riding.

      > Reduction of skid plate area and dimensions that has a direct impact on the part strength.

      > Simplification of assembly steps that has a direct impact on the motorbike maintenance.

      > CONCEPT: CMBP (centered mass battery positioning)


      first glance, the main perceived feature is a very accessible, easy to
      replace yet protected battery, but there is much more at play.

      an electric motorcycle, the battery pack is the heaviest suspended
      element. Hence, it plays a determinant role in both behavior and
      performance of the bike. In other words, a same weight put here o there,
      can make the bike feel lighter or much heavier, can help an easy and
      precise riding or make it feel like riding a wild horse.

      goal: to achieve the most precise, easiest and less demanding ride the
      possible. To achieve it we decided to distribute the mass alongside the
      frame and swing-arm length, moving its center of gravity the closer to
      the wheel axis the possible.

      The result has been an unprecedented mix:

      > Increase of stability and balance

      > Increase of lightness feeling

      > Increase of traction on rear wheel

      > CONCEPT: LLPD (linkless progressive damping)


      progressive suspension is a must in trial practice. It helps
      performance in all grounds, it helps contact at low and high speed. But
      not everything is positive, because a progressive suspension with a
      linkage system adds weight, complexity, and overall a great deal of
      maintenance. You must always keep an eye on the bearings and the
      fastenings, which are too sensible to harsh conditions. Moreover, it
      only works fine when everything is in place, a deformed link, a worn off
      bearing may easily make the system go awful.

      But is it possible to get a progressive system with no linkage? Not easy, not cheap, but yes.

      First of all, it takes an excellent shock, sensible yet robust. For us, ÖHLINS is the best solution.

      we need a ventilated environment to make sure it is stable. In thermic
      bikes the shock is surrounded by the exhaust pipe, hence overheated by
      external agents, we don't have the same problem.

      it takes the right geometry. After a number of tests, we have developed
      a geometry that replicates in behavior our former linkage system, but
      it spares pieces, weight and maintenance.

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      Bei Fragen Mailan:
      Danke für die ausführlichen Informationen. Und wieder mehr Bewegung in der E-Trial Szene.
      Auszug aus dem Fahrerhandbuch der HONDA TLR 250, Seite 13, Punkt 8

      "Wenn das Gelände Ihnen unbekannt ist, vorsichtig fahren. Verborgene Felsen, Löcher oder
      Schluchten können Unheil bringen."

      Wie wahr!