MEP innovative features are related to the possibility to separately, independently, and seamlessly evaluate left and right crank arm contributions to define cyclist significative parameters on the crankset.

Each MEP crank arm independently measures:

• Left
  and
  Right
  pedaling
  force
• whether pedaling force is
  pushing
  or
  pulling
• Left
  and
  Right
  pedaling
  offset loads

This data is transmitted in realtime, via , either to a (running MEPPhone), or to a (running MEPManager). Knowing the and the , the software derives the pedaling and values for each crank, and their contributions.

Each MEP system is tested in our Servocontrolled Test Rig (STR), equipped with a reference Load Cell.
Different tests are performed under Static and Dynamic Loads, comparing data from the STR with those on MEP display.
In order to not affect the accuracy of acquired data, STR has a higher resolution (16 bit) than MEP system.
Each MEP crank is tested in order to sperimentally acquire the of all the parameters.
Our numerous tests on MEP cranks lead to the following (valid for both left and right crank):

• +/- 0.25
  % F.S.
  max linearity error
  on force reading, from 0 to 1,800 N F.S.
• +/- 0.5
  mm
  max error
  , moving +/- 10 mm force position along pedal's axis

MEP structural integrity has been proven by several structural, static and fatigue tests, such as:

• Static
  and
  fatigue
  tests, till failure, both on specimens and on complete parts
• Fatigue tests
  at different loads
  , simulating anomalies such as partial lack of torque in fixing screws
• Fatigue tests, performed according to
  UNI-EN 14781:2006
  , and exceeding
  100,000 cycles
  at
  1,800 N
  required by the Standards

Parts have been assembled and disassembled without any poblem. We do believe this result was achieved thanks to the following characteristics of the MEP system:

• Accurate
  construction tolerances
• Strength
  of the kind of teeth adopted for motion transmission
• High resistance
  screws and helicoil inserts
• Mechanically-guided golden plated connector inserts (which guarantee
  safe connections
  )
• Tested electronic connector inserts (for over 10,000 insertion cycles encountering
  no problem
  neither mechanical, nor electronic)
  Note:

  we already use similar connectors in electronic instruments for surgical use, which withstand high duty temperature-pressure in autoclave

The total weight is less than 1,500 grams.
Weight is not a fundamental requirement, as our objective is not to mount MEP during race in order to win, but to

• U = 145 mm (5.71")
• A = 117 mm (4.61")
• Q = 151 mm (5.94")
• I = 95 mm (3.74")