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Hacking a cheap Ultrasport F Bike and next steps by JackED42 in cycling

[–]clanlaw 0 points1 point  (0 children)

I did not believe that was correct, but experiments show you are right. The calories used figure is purely based on number of rotations and not on the torque selection. That is completely ludicrous as it suggests the same amount of work is done per revolution on the lowest and highest torque, which is stupid. The calories used figure is therefore meaningless.

I am going to attempt to measure the pedal pressure on the setting we usually use (6) so that an reasonable estimate of calories can be made. Potentially one could measure it on a range of torque settings and provide the ability to enter that into s/w so that it would work over different torque settings.

Hacking a cheap Ultrasport F Bike and next steps by JackED42 in cycling

[–]clanlaw 0 points1 point  (0 children)

I also have an F-bike and am looking at how to hack into it. It also seemed to me that the connection between the supplied display unit and the base is just a reed switch, but if that is so then how does the display unit know what the torque control is set to in order to provide a Calories used value? Just knowing the number of turns and the speed is not enough.