MHR TEAM INNER ROTOR IGNITION Scooter YAMAHA-MINARELLI
MHR Team ignition is a great innovation.
Manages multiple maps simultaneously without having to resort to a hand-held device, with just a simple click. Ability to shift the selected map by moving the OFFSET (± 2°).
The inner rotor ignition systems designed by Malossi are based on the state-of-the-art technology applied to racing. Such a new system resulted from the need to overcome the technical limitations imposed by conventional flywheel ignition, which cannot ensure consistent performance over 10,000 rpm and causes severe setting-up problems for racing vehicles.
We dramatically modified the control unit to create two new Inner Rotor Ignitions: MHR and MHR Team .
We made the control unit even more immune to interferences developing an uP STM8 – 8 bit microprocessor with processing speed of 20MIPS, guaranteeing spark timing with greater accuracy than prior versions!
The MHR version includes a control unit with variable spark advance timing, not adjustable .
The MHR Team includes a control unit with variable spark advance timing and with 3 trimmers :
the first trimmer (MAPS) is for selecting the spark advance timing map
the second trimmer (OFFSET) allows you to shift the selected map ± 2°
the third trimmer (LIM) used especially for 4-stroke engines, permits you to vary the rev limit between 11.500 RPM to 14.300 RPM and also allows you to disable the rev limiter
It also features 8 preset maps described as follows:
2 variable spark advance maps for 4 stroke engines
5 variable spark advance maps for 2 stroke engines
1 fixed spark advance map
The installation instructions graphically illustrate the best spark advance setup for different engines.
Technical features
Control unit with variable spark advance timing and with 3 trimmers:
trimmer MAPS: selects the spark advance timing map
trimmer OFFSET: shifts the selected map ± 2°
trimmer LIM: selects the rev limit (16 possible settings)
8 preset maps:
2 variable spark advance maps for 4 stroke engines
5 variable spark advance maps for 2 stroke engines
1 fixed spark advance map
System based on a uP STM8 – 8 bit microprocessor with a processing speed of 20MIPS (Million Instructions Per Second).
Reduced processing time, improved spark advance precision and stability.
Hardware architecture with improved immunity to interferences.
Temperature class 105°C cable.
Compensation for flywheel fitting error of ± 2° with 0.5° increments via an external trimmer
8 spark advance tables selectable via an external trimmer
Vector spark advance tables comprised of 24 breakpoints with linear interpolation.
Adjustable rev limit via an external trimmer with 16 settings.
Soft cut feature insures a gradual rev limit cut-off.
15 settings to adjust the rev limit between 11,500 RPM and 14,300 RPM with 200 RPM increments plus a setting to disable the rev limiter.
Capacitive discharge
Ultra high efficiency
Constant 30,000 V discharge voltage up to 20,000 rpm
Small (Ø 58 mm) and light inner rotor
Permanent magnet rotor ensuring excellent performance
Unprecedented efficiency with minimum weight
WARNING . with this kind of ignition the lighting set is disconnected.
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