Jump Count and Jump Distance Questions

Q: What counts as a jump?

A: The accelerometer in the MasterMind TCU is used to detect jumps. Essentially, the MasterMind TCU detects a jump when the bike is free falling AND the bike is traveling at ≥ 5 kph / 3mph at the rear wheel.


Q: Is there a minimum bike speed to detect jumps?

A: Yes. Minimum bike speed to detect jumps is 5 kph / 3 mph. The system detects speed through the speed sensor system at the rear wheel.


Q: How does the system rule out counting trail roughness as jumps?

A: There are certain threshold values (filters) for acceleration to make sure rough sections are not counted as jumps.


Q: Why was only one jump counted when two jumps happened in rapid succession?

A: We apply a filter to avoid false detection. This can mean only the first jump of two in rapid succession is counted.


Q: How is jump distance measured?

A: Jump distance is calculated by hang time and take-off speed, as measured by the speed sensor.


Jump Measurement Accuracy Questions

Q: How accurate is the jump distance measurement?

A: The system calculates jump distance from the horizontal speed and jump period, so is a rough approximate. In reality, a jump follows a parabolic shape, and the horizontal speed is not going to provide a true value for either the horizontal distance covered or parabolic distance. A very steep take-off and landing for example - similar to those on a jump track - results in a longer distance reading than the actual horizontal distance covered.


Q: What happens if you change your wheel circumference?

A: Changing the wheel circumference affects the calculation of jump distance (example: a smaller rear wheel means lower system bike speed for calculation = shorter jumps).


Q: Can the system detect that both wheels left the ground?

A: No, since the accelerometer in the MasterMind TCU is located in the front area of the bike.

 

Q: Does the system count manualing or pulling up the front wheel as a jump?

A: It is possible. The system looks at the compression force before you lift the front end of the bike, where the MasterMind TCU is located. The higher the compression force, the likelier a jump detection. Since the system is looking for the front wheel lift as well as bike speed ≥ 5 kph / 3mph, if you lift up the bike with the rear wheel spinning, the system may detect a jump.


Q: Can lifting up the bike by hand be counted as jump?

A: If you lift the bike with the rear wheel spinning, a jump may be detected. Minimum bike speed to detect jumps is 5 kph / 3 mph. However, it is not recommended to lift the bike up by hand with spinning wheels. Power the bike off or set it to OFF mode before lifting it.


Q: How accurate are Specialized Jump Stats compared to Garmin's jump detection?

A: Specialized Jump Stats deliver very similar results; Specialized tested both systems in parallel.

 

Q: Does the Specialized algorithm follow any industry standard?

A: No. There is no industry standard. Specialized developed their own algorithm.


Mission Control and MasterMind TCU Questions 

Q: Will the jump count on the MasterMind TCU display be reset to 0 automatically after the ride and/or when ending the ride recording in Mission Control?

A: No, currently there is no automatic re-setting on the TCU. With the current firmware version, all MasterMind TCU ride data, including Jump Stats, need to be reset manually after a ride (long press on minus button of remote). We are considering an optional feature that would allow to auto-zero MasterMind TCU ride data when ending a ride recording in Mission Control.

If you don't reset ride data manually before your next ride, the jumps collected during ride A would be included with those from ride B. This could lead to confusion when riders compare their stats during a ride. It would also mean your total jump count on the display and in the app will not match.

 

Q: Does the Mission Control .fit file contain jump metrics and if so, what can I do with the file?

A: Yes, jump stats are recorded in the .fit file. These files can be exported from Mission Control and uploaded to Garmin Connect to see jumps (use of data follows an industry standard).