Pedelecs - the electric bike community
Welcome to the UK's largest electric bike community. Online since 2006, featuring daily news, technical as well as 'first timer' bike guides and a busy forum with over 195,000 posts; Pedelecs has everything you need to know about electric bikes.
18th March 2010, 10:56
Cheap ON-Bike Wattage Reader
For those curious about your combined bike /legpower wattage, I'm cross posting a mates post from another forum:
"Power data, especially watts output, is difficult & expensive to acquire in
my experience. Torque measuring devices like SRM, PowerTap and Quarc are
accurate yet expensive & elaborate solutions while the iBike offers simple
install and much lower entry level prices.
A far cheaper & easier solution is Cyclemetrics, an iPhone app that
effortlessly tracks your path with speed, distance, time, heading &
altitude. It also displays estimated Maximum Watts, Average Watts, Maximum
Watts / Kilo & Average Watts / Kilo. You can export CSV or KML files via
Google Docs & Maps, Twitter or email. It imports US weather only at the
moment but hopefully will be expanded to other countries as this will
certainly be responsible for greatly improved accuracy. As for accuracy
without weather data and without comparing it directly to my iBike, it seems
to do a very reasonable job of estimating Watts, at a much lower cost.
$9.99 from the iTunes AppStore."
I've tried it and it's very cool.
Have a handlebar i-phone mount to see it all -- see here:
(I'n deference to you POHMIES i post a local link)
Bicio GoRide iPhone bike mount
Last edited by Tex; 18th March 2010 at 10:59.