U-Mapp / Youmapp

Youmapp is Mecatecno's Bluetooth phone application to alter the Dragonfly's map parameters.  As of March 2025, the app has not been released to the public.  However, dealers have been working with it for many months and information is beginning to trickle out.  Some of what I've written here is speculation.  Refinements/corrections will be made as needed. 

Note that additional hardware is required for bikes produced prior to the 2026 models.  This hardware connects near the controller and is being sold in Europe for 399 euros as of April 2026.  It is definitely called Youmapp, but I will retain U-Mapp as needed to keep my earlier URLs intact.

Youmapp is quite similar to EM Connect, but there are differences.  I described EM Connect under the section on the controller for the ePure Race, so it's probably worth taking a look at that too.

Overall, I prefer Mecatecno's implementation.  It makes more sense to the engineering mindset.  For example, the Dragonfly expresses maximum power in watts, whereas EM just offers a relative power setting in percent. 

Furthermore, Youmapp rolls all the tickover (automatic idle) stuff into a single control with four discrete levels (plus disabled).  Although this may offer less flexibility, it's probably adequate and certainly is simpler.

Additionally, Youmapp has a setting called Throttle Multiplier.  At first, I could not see a need for this.  But it would be useful if the other settings are to your liking, and you just want to experiment with somewhat more (multiply by 1.1) or less (multiply by 0.9) power.  But it's very general-purpose.

Finally, Youmapp has a setting for “Inertia” which is absent from EM Connect (although its effects may be present in the controller - just not configurable by the user). 

Below is a table showing what has been revealed about Youmapp settings.  Although not directly comparable because the motor and gearing are different, EM's Max Torque settings are as follows: Green map is 0.7, Blue is 0.85, and Red is 1.  EM's school map setting were 0.1, 0.2, and 0.3.  These numbers illustrate the relative differences between the maps.  Note that the specified fraction of available torque applies to all throttle positions, not just WOT.

Throttle Curve Exponents Visualized

It's possible to provide an output (command signal to the controller) that's quite different from the input (mechanical movement of throttle).  The images below are screenshots of curves generated by software to program the VESC Project (an open-source motor controller).  I created them to offer an exaggerated visualization of the exponential effect.  All exponents eventually yield 100% output for 100% input, but the rate at which they get there is different.

• A Throttle Curve Exponent of 1.0 is a linear (straight line) function.  The output is identical to the input.  An input of 50% gives an output of 50%.

• A Throttle Curve Exponent of 1.1 produces a slight softening of the throttle response.  An input of 50% gives an output somewhat less than 50%.

• A Throttle Curve Exponent of 1.25 produces a marked softening of the throttle response.  An input of 50% gives an output significantly less than 50%.

• A Throttle Curve Exponent of 0.9 produces a more aggressive throttle response.  Here, an input of 50% gives an output somewhat greater than 50%.  Although this is typically not used with ICE motorcycles, it is mathematically possible.

Actual Throttle Curve

A more accurate look at the Power Curve parameter comes via an online tool provided by siliXcon.  It is a general-purpose tool used to visualize the effects of various mathematical manipulations of the throttle signal.  

The curve below, although accurate and representative, is subtle (and why I'm presenting it after the exaggerated ones).  Ignore everything to the left of the X-axis zero (it's possible to apply these manipulations to many different use cases).  You can also see that near zero, the Throttle Low Dead Zone is apparent as a constant zero output.

November 2025 Update

Preparations are underway to present the final version of Youmapp at a trial in Costa Brava, Spain on November 22 and 23.

The final version is totally different from the initial prototypes and includes a new display.  The unit will be backward compatible with all Dragonfly models.  Production will commence immediately after the formal introduction. 

For consistency, I have called the device U-Mapp, however it may ultimately be named Youmapp or Youmap.  We'll have to wait and see.