Bicycle Computer – Cykelstrom Bicycle Power Meter App – West of Oshkosh, Wisconsin – June 20th, 2022

Cykelstrom is being demonstrated as a bicycle computer by displaying cycling performance information during this test ride.

Accuracy For This Ride

The best accuracy for this ride is highlighted in bold.

SensorsCrank Power Meter
(Watts avg.)
Cykelstrom (Watts avg.)Difference (Watts)Margin of Error (Watts)
GPS Speed and External Cadence132.69154.1021.42+/- 1.39
GPS Speed Only132.21164.0830.87+/- 1.56
Table created using Bland-Altman Analysis using a 4iiii Precision Pro dual sided crank power meter as the standard with 95% confidence level.

Discussion Of This Ride’s Results

The accuracy of this ride was not ideal, relative to the results of other similar rides. I suspect that I did not not calibrate the crank power meter correctly or I used the wrong side of the dual sided power meter for power information. This highlights the importance of selecting the correct sensor when collecting data. In my case, the dual sided power meter sends the correct power data through the left sensor, however you can connect to the right side power sensor and get a power reading, however that reading is for the right side only. If you are using a dual sided power meter, make sure you connect to the side that reports the combined power total. This is usually the left sensor side. If you are using a single sided power sensor this is not an issue.

Bicycle Computer Functions

I designed Cykelstrom to be a simple bicycle computer in addition to its ability to estimate the cyclists power. Cykelstrom displays and records the cyclists speed, heart rate, cadence, distance traveled, heading and many others. To learn how to use these functions and more see Using Cykelstrom On Your Ride in the Quick Start Guide.

Strava Activity

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Elapsed Time Moving Time Distance Average Speed Max Speed Elevation Gain Calories Burned
01:44:50
hours
01:44:03
hours
24.70
mi.
14.24
mph
22.51
mph
437.34
ft.
1,151
kcal
Super hot day with temperatures in the mid 90's

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The Cykelstrom Bicycle Computer App Is Only Available On Google Play

bicycle power meter app download button
Cykelstrom Bicycle Power Meter App Download
cykelstrom scan QR code
Scan to go to Cykelstrom on Google Play