On 03-23-2012 19:23, Chris wrote:
> You could have a look at the Dahoon BioLogic mount its on its 3rd
> generation is rainproof. Used a first generation one with iPhone 3G
Looks pretty good, but $50 is getting up there.
I am trying the free version of their tracking app.
Pad $3 for "imapmyride" and I'm angry--you aren't even allowed to look
at the app until you give them all the personal data they want for an
account on their webserver.
This one (BikeBrain) looks good, but one thing is suspicious:
Calories burned and power output can be calculated from weight, gear
ratio, slope, and wind resistance.
Wind resistance is determined by the shape of the bike and rider and by
the speed and direction of the wind. Since the latter varies too much,
and they don't ask anything about the shape of the bike, what's the
point of asking for height?
Age and gender have NO bearing on calories, so why do they ask? Useful
for marketing, no doubt.
Gear ratio makes a lot of difference—on my bicycle, I cruise fifteen to
twenty miles per hour. On my tricycle, I work my butt off to reach ten
miles per hour because the blasted thing is geared so low, I can't move
my legs any faster! But they don't ask for gear ratio.
I suspect ait temperature and humidity make a lot of difference, but
I could be wrong.
--
Wes Groleau
Heroes, Heritage, and History
http://UniGen.us/webtrees