VeloComputer with power meter

VeloComputer (www.velocomputer.com) 1-degree precision bluetooth wheel sensor allows you to measure precise distance, spot speed, acceleration and propelled power.

In this demo we show how the propelled power is changing when tilting the phone up, simulating uphill ride. Since the speed is decreasing at a very low rate it requires more power to maintain this speed going uphill. The uphill grade is calculated from phone's accelerometer when tilting the phone toward yourself.

Clearly, the propelled power is generated only when the propelled force is applied on the wheel. The wheel should accelerate.

However, the resiting forces may offset this acceleration. The resisting forces is a combination of the force of gravity and natural friction created by a cyclists moving on a bike through the air. VeloComputer calculates these resisting forces. Knowing accurate wheel acceleration it subtracts resisting forces from a total force and uses the remaining force to calculate power. We call it propelled power, the ultimate power which propels cyclists forward.

Category:

Sports

Tags:

• cycling
• power
• bicycle
• bluetooth
• cadence
• sensor
• velo
• velocomputer

[redalf]

were you using the iPhone to record this?