TSS Calculation on Karoo

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Tom Vandenbosch

• October 31, 2022 11:09
• Edited

Hi All, 

i recently added a power meter to my bike, while all readings from that side seem fine, i got a rather strange beheaviour when i looked at the TSS score on the karoo.. my last ride had 1731 TSS score.. while Strava, Trainingpeaks have (probably correctly) modified this towards 140/160.. 

When using the formula: TSS = (sec x NP x IF) / (FTP x 3600) x 100 
with the below metrics i end up with roughly 150

Ride Time: 2:58:08
Norm Power: 141W
Int Factor: 0.72

Anyone any idea on where the karoo might go wrong in doing the calculation?

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  Ali

  • October 31, 2022 11:44

  Hi Tom, that strangely looks wrong. Could you confirm the FTP numbers under the Settings > Training zones?

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  Tom Vandenbosch

  • October 31, 2022 11:56

  Hi Ali, yes already verified that.. that seemed correct.. I will try to go for another ride in the coming days and see if i notice some strange behaviour

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  Ali

  • October 31, 2022 12:01
  • Edited

  Thanks Tom. Could you also please share the FIT file of this ride with us? You can submit a ticket, and attach the files here: https://support.hammerhead.io/hc/en-us/requests/new

  See: https://support.hammerhead.io/hc/en-us/articles/360003096654-Dashboard-Downloading-a-FIT-file

   

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  Tom Vandenbosch

  • October 31, 2022 12:18

  hi Ali, upload of fit-file done

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  Richard Soltes

  • September 01, 2024 17:33

  When you strike an imaginary flint , you get only the illusion of fire.

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