Smart Trainer Cadence Spike: Triathlon Forum: Slowtwitch Forums

Smart Trainer Cadence Spike

Apr 15, 19 12:20

Using a Tacx Vortex and Trainerroad. When watts seem to get above like 220, the cadence on my TR app from my phone spikes between 120-140 and therefore increases the resistance substantially I believe.

Any tips to fix this? I am new to the smart trainer and TR world, about 2 months in. Moreover, I do try to keep a smooth pedal stroke knowing that that can lead to these inaccurate readings. Thanks!

Edit: no Power Meter and using ErgMode

Last edited by: Rob G: Apr 15, 19 17:31

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Re: Smart Trainer Cadence Spike [Rob G] [ In reply to ]

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AutomaticJack

Apr 15, 19 13:00

Post #2 of 4 (740 views)

How does the Trax measure your cadence? My Magnus doesn't do that, and the program controlling it (Rouvy) doesn't care when controlling its resistance. The Magnus looks at wheel speed and resistance to set watts.

A crank based power meter needs cadence to determine power. Are you controlling your Trax via your bikes power meter through TR? If that is the case the cadence problem is most likely in the power meter and not in the software.

"...the street finds its own uses for things"

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Re: Smart Trainer Cadence Spike [AutomaticJack] [ In reply to ]

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Rob G

Apr 15, 19 13:19

Post #3 of 4 (733 views)

AutomaticJack wrote:

The trainer somehow calcs cadence. I don’t have a PM

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Re: Smart Trainer Cadence Spike [Rob G] [ In reply to ]