Girls Bikes: Best of 2010

by Tracy McGill •

Young girls will always remember that intoxicating feel of freedom as they make that initial ride around the neighborhood on their first big girls’ bike.  I know I remember mine. As parents, we want our kids to have that same experience, but it’s a daunting task to choose a bike that girls will want to ride and provide safety at …


New Longtail Utility Bike: The Madsen kg271

by Justin Thomas •

Here’s a rare find — a new longtail bike. This bike is called the kg271, and it’s made by Madsen Cycles. They describe the bike as an “urban utility bike”. It comes in two versions: one with a rack built with oversized steel tubing, and another version with a bucket that incorporates a removable seat and two seatbelts.


The Street Enlightened Electric Bicycle From IZip

by Justin Thomas •

The Street Enlightened electric bike from IZip is a good example of a “stealth” electric bike –the batteries are concealed inside the bike’s frame (in the down tube), and the DC motor is integrated into the rear wheel. You don’t have to mention this fact to your fellow cyclists! The bike has a three hour charge time and an electric-assisted …


Triobike: An Innovative Cargo Bike

by Justin Thomas •


Straight out of the heart of Copenhagen, comes the Triobike, an innovative cargo bike, that can transform itself into a regular bike and a stroller. It’s no surprise that this bike comes form Copenhagen — the city is filled with urban bikers. With the Triobike, you can transport your kids to school in the cargo bike, then, instead of riding …


Hyperefficient Transportation: Utility Bikes and Bike Trailers

by Justin Thomas •

Utility bikes or “work bikes” are very efficient vehicles for transporting cargo (and children too). They are quite popular in bike-friendly places like Amsterdam, Copenhagen and China. Bikes can tow a remarkable amount of weight. Loads in excess of 880 pounds (400 kilograms) have been hauled behind bikes along flat surfaces. Generally though, 300 pounds (140 kilograms) is considered the …


Sun and Wind Powered Bike Trailer

by Justin Thomas •

The Navitas is a bike trailer that generates its own power using the sun and wind. Designed by Paul Smith, a student at University of Derby in England, the trailer has a rear wheel that splits three ways to become a vertical axis turbine. There is also a compact solar panel to help to provide a charge to the onboard …


Build Your Own High-Performance Hybrid Electric Bike

by Justin Thomas •

We recently featured the high-performance electric Optibike, which was mentioned in a New York Times article. Well, apparently you can build a equivalent electric bike for much less (for around $1,600). See the video for more details, and see notes on the bike’s design after the fold.


Chainless Bikes

by Justin Thomas •

Besides the wheel the invention of the chain is probably what made the modern bicycle possible but ironically it’s also the bike’s biggest downside. The chain usually needs a lot of maintenance and care to keep it functioning properly and of course there’s always the risk of pant legs or loose shoelaces getting caught. If the Dekra D-Drive (Direct-Drive) system …


Xtracycle: Efficient Bike Extender

by Justin Thomas •

Xtracycle is a 15-inch bike extender with dual racks. It turns standard bikes into practical transportation devices, capable of carrying sizable loads. The inventor, Ross Evans, realized that by lengthening the wheelbase of an ordinary bike he could increase the portage capacity without significantly hindering handling. He arrived at a simple, elegant modification: Remove the rear wheel, bolt on a …


Our Choice for an E-Bike: TidalForce M-750

by Justin Thomas •

The TidalForce E-Bike is a powerful motor-assisted mountain bike. Originally developed for the U.S. Airforce, the bike has rugged body and folds down to 18″ x 42″ x 36″ (with the front wheel removed).