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BikePower

BikePower
  • #: 195313
  • Price: $3.99 In Apple Store
  • Category: Health & Fitness
  • Updated: 2008-10-30
  • Current Version: 1.0.1
  • 1.0.1
  • Size: 0.20 MB
  • Language: English
  • Seller: George Root
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 2.0 or later
  • © 2008 - George Root
  •  Add to Favorite apps

 

Description

Have you ever wondered as you are struggling up a steep hill on your bike or battling a strong headwind just how much power you are generating? BikePower is a simple way to estimate your power output under just such conditions. It is inexpensive, yet it provides valuable insight into your ability to produce power.

Features:

• Results are computed for your specific parameters.

• US or metric units

• Provides two ways to estimate your power output:

1) Ride up a known grade and note your speed.

2) Ride on flat terrain and note your speed.

BikePower will tell you how much power was required to achieve your speed.

• Power calculation includes:

Uphill / Downhill grade based on weight of bike + rider

Headwind / Tailwind based on altitude and rider's aerodynamic drag area

Rolling Resistance of your tires

Transmission Efficiency

• Reasonable default values are provided for all parameters

• Complete instructions are provided on the website

The screenshots show:

1: The main display with sliders to vary grade, wind, and power.

2: The data entry display where you enter values to customize the computations to your specific parameters. The text near the bottom scrolls to reveal more instructions.

3: The keyboard used to change the values in the data fields.

4: If you pedal at 20 mph in still air you are generating about 200 Watts (using default values).

5: If you pedal at 6.4 mph up a 7 % grade you are generating about 200 Watts (using default values).

Use BikePower to evaluate "what-if" scenarios:

What if I lost 5 lb. How much faster could I go?

What if I bought a lighter bike. How much faster could I go?

What if I put fat tires on my bike. How much slower would I go?

If I lived at 5000 feet altitude, how much faster could I go?

iPhone Screenshots

BikePower iPhone Screenshot 1
BikePower iPhone Screenshot 2

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The information may be outdated (2011-04-24 22:25:50). For actual information go to iTunes


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