Saturday, May 17, 2008

Funny Tandem Bicycles



When you ride a tandem bicycles, why you not try something different such as video above. the person at the front look great and nice to see the person at the back. I
n our life, we should try to think as a creative person. Don"t shock if we see in future the tandem bicycles come with five person. It sound great!:-)


Tandem Bicycles Rim Brake

Most modern tandems have at least a pair of hand-operated rim brakes, either calipers, cantilevers or hydraulic. These may be special tandem models, or may be brakes intended for solos.

For pure stopping power, good rim brakes, properly adjusted, can stop a tandem as well as they can stop a solo.

The greater momentum of a tandem reduces the margin for error in brake setup, however, so if the brakes are not properly adjusted, or there are cable routing problems, poor quality brake shoes, or slippery rims, braking power may be inadequate.

Cyclists with inadequate braking often are tempted to cure the problem by buying more expensive brakes, but this is usually not worthwhile if you have a decent quality bike to begin with. Before replacing the brakes, make sure the ones you've got are working up to their full potential.

Saturday, March 15, 2008

History (tandem bicycles)

Originally tandems bicycles were built by welding two bicycle frames together to form a two-person bicycle. First patents related to tandem bicycles date from the late 1800s. Modern technology has improved component and frame designs, and many tandems are as well-built as modern high-end road and off-road bikes.
While a tandem has double the pedalling power with only slightly more frictional loss in the drivetrain, it has about the same wind resistance as a single bike. High performance tandems may weigh less than twice as much as a single bike, so the power to weight ratio can be slightly better than that of a single bike and rider. Tandems bicycles can reach relatively high speeds, especially downhill and on flat to rolling terrain. They are not necessarily slower on climbs, but are perceived as such, in part due the need for a high level of coordination between the riders, especially if the physical abilities of the two riders are very different, requiring a compromise on cadence.
On conventional tandems bicycles , the front rider steers the bicycle and is known as the captain, pilot, or steersman; the rear rider is the stoker, navigator, or rear admiral. On most tandems bicycles the two sets of cranks are mechanically linked by the chain and turn at the same rate.