Shifting Gears

Starting with version 08, these gear shifting options are available:

Bluetooth Mediabutton:

  • Vol+    :: +1
  • Vol-     :: -1
  • skip > :: +4
  • skip < ::  -4
 

use screen gestures to shift gears:

  • swipe up ::    +1
  • swipe down :: -1
  • swipe right :: +4
  • swipe left    :: -4
 

 

 

Virtual gears

Starting with version 08, it's possible to define virtual gears, these can be used with ANT+ FE-C.

The Basic Idea:

  • Introducing gear shifting for ergometers without gears.
  • A personal gear setup, independant from manufacturers gear setup.

 

Solution:

  • Define your own gear setup, e.g. based on your own "outdoor bike" (chainrings, sprockets)
  • Calculation of the virtual speed from the cadence, the selected wheel circumference and the gear engaged
  • The determined virtual speeds flow into the simulation calculation of ANT+ FE-C and thus influence the wattage.
  • The speeds shown on the trainer cockpit are not taken into account.

 

Configuration:

  • a max. of 30 gears is possible (e.g. 3x10, 1x30). A max. of 3 chain rings.
  • Howto setup as formatted text within "Konfiguration der Gangschaltung":
    • Pattern: <chaing rings> :  <cassette>
    • enter the number of teeth for the cogs
    • Example:
      • 3 chain rings : 40, 46, 52
      • cassette (10 speed):  36, 34,31,28,25,22,19,16,13,10
      • formatted text:  40, 46, 52 : 36, 34,31,28,25,22,19,16,13,10

 

Disadvantages:

  • While using the virtual gears, the speed and distance shown on the trainer do not match the displays on the app and the workout software. The reason is that the gear setup of the trainer do not match the defined gear setup of the ergo-App. This results in differences in speed and distance traveled.

 

Technical Details:

ANT+ FE-C uses a calculation method for the control , that takes these parameters into account:

  • rider weight
  • bike weight
  • bike type
  • current speed
  • incline / descent
  • head / tail wind
  • slipstream
  • road surface

 

The virtual gear setup is integrated here in such a way that the speed is not taken over directly from the trainer, but that, based on the cadence, a speed is calculated together with the respective unfolding, which is then taken into account in the calculation of the ANT+ simulation.

 

 

Example Configuration

  • setup:
    • chain rings:  24, 32, 42
    • cassette: 36, 32, 28, 24, 21, 19, 17, 15, 13, 11
  • circumference: 2100 mm
  • bike type:  race bike
  • rider weight: 76kg
  • bike weight: 10kg

 

This results in the following correlation between the gears. The speeds and wattage specifications are shown with a cadence of 70 [1 / min] and a flat distance.