Joseph Petrella's Blog (43)
How does a cycling computer calculate speed?
Your magnet set-up is measuring each rotation. If you enter in your wheel/tire size correctly, then the cyclocomputer knows exactly how far each rotation of the tire takes your bike. Combine that with a clock, and you have speed.
But wait... theres more.
You enter the size of the wheel in the computer,…
Added by Joseph Petrella on April 17, 2011 at 9:58am — No Comments
Bike Helmets - What You Ought To Know
Is a $200.00 helmet better and safer than a $10.00 helmet? It's your brains, you decide.
Added by Joseph Petrella on April 17, 2011 at 9:48am — No Comments
How not to lock your bike.
Added by Joseph Petrella on January 26, 2011 at 7:00pm — No Comments
KIA 2011 Sportage Commercial - Share The Road
Added by Joseph Petrella on January 15, 2011 at 4:00pm — No Comments
New Locks from Down Under
Added by Joseph Petrella on January 9, 2011 at 6:14pm — No Comments
Congresswoman Giffords Talks Bikes
Added by Joseph Petrella on January 9, 2011 at 9:10am — No Comments
Barb Chamberlain: Bikes Will Save the World
Added by Joseph Petrella on January 5, 2011 at 6:03pm — No Comments
Secret that can change the world.
Added by Joseph Petrella on January 5, 2011 at 10:38am — No Comments
Is your riding partner slowing you down? Well here's a solution for you.
Added by Joseph Petrella on January 3, 2011 at 3:30pm — No Comments
Awesome cyclist spotted in Vancouver
Added by Joseph Petrella on December 15, 2010 at 11:42am — No Comments
Your Winter Moment of Zen
Kuroshio Sea - 2nd largest aquarium tank in the world - (song is Please don't go by Barcelona) from Jon Rawlinson on Vimeo.
Added by Joseph Petrella on December 9, 2010 at 1:30pm — No Comments
IKEA US Says Thank You to All Its 12,400 Co-Workers with a Surprise ‘New Bike’ Holiday Gift
Added by Joseph Petrella on December 8, 2010 at 10:29am — No Comments
Even More Danny MacAskill on the Streets of London
Added by Joseph Petrella on December 3, 2010 at 2:59pm — No Comments
It's Not About Winter... It's About Remembering The Ride
Added by Joseph Petrella on December 3, 2010 at 2:48pm — No Comments
Biking directions added to Google Maps
Added by Joseph Petrella on December 3, 2010 at 2:09pm — No Comments
Bike polo gains ground in L.A.
Added by Joseph Petrella on November 29, 2010 at 7:19am — No Comments
Filmed on an iPhone 4
Magny iphone session from HadrienPicard on…
ContinueAdded by Joseph Petrella on November 28, 2010 at 5:39pm — No Comments
TV Spot: For That Expensive Bike
Added by Joseph Petrella on November 28, 2010 at 11:10am — No Comments
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About The Ride
The Ride For Roswell is an annual celebration of community support for Roswell Park Cancer Institute. Its core mission is to understand, prevent and cure cancer.
Bike Safety Tips
Drink water all day & eat before you start. We have 13 rest stops where you can rest, get hydrated & grab a PB&J or banana.
Be sure your helmet is resting flat on your head, not tilted up or down. Also be sure the strap is tight enough.Be sure helmet locks securely, fits well & has no cracks.
A-B-C Check- Be sure your bike is in good condition. Check bike tires for proper Air pressure. Check Brakes. Check Chain.
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