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10/24/2010

Operation Priciples of Chainless Bikes, TARA

- In accordance with a curve line of sprocket tooth form, a taper roller rotates a roller cage 
  by rolling motion, as a force of pedal transmits to a double-headed drum typed sprocket
 combined with a pedal shaft.

- This power of rotation transmits the rotation to a sprocket combined with a roller rotation 
   shaft of a rear wheel through the transmitting shaft.

- The above principle is a bearing rolling motion to maximize the efficiency of transmission 
   power.

video

Strong Points Compared to Chain Bikes


The best strong point is as below;
No worry about safety concerns caused by driving system. 

10/21/2010

About our company

Hello everyone,


We are very pleased to introduce our progress and high-tech
products developed by our own unique technology,thus
looking forward to developing a useful dialog and a close
relationship with you via this blog.
Bikevalley is a venture company established by the expert
group in 2002, in order to attain the ideal of inventors in the
various field of industries that their dreams will come true.
We have done our best to speed up the development of
company through production of the best quality and close
realization of customer satisfaction, having an international
competitiveness based on advanced knowledge that
accumulated in the field of mechanica we have engineering
ever since. 


We have succeeded in developing the first product called “Chilsung Gear” in 2005,
implying a copernican revolution of 140 years bicycle history, which shall be a
core technology, mounted to shaft drive of real fourth generation chainless bicycle.

Chilsung Gear made a revolutionary alternative in the field of industrial gear, and
our shaft drive bikes mounted with Chilsung Gear, named “TARA,” shall become
the only alternative for the existing bicycles throughout the world in view of speed,
power, durability and safety.
Korean proverb has “Well begun is half done,” which means the beginning of
work says almost half of success.


Setting about the shaft drive bikes with Chilsung Gear, we shall strive continuously
to develop high-end products with innovation of the accumulated technology and
thought in the field of engines used in Electric Bike, Pump, Propeller of Vessel and
Automobile.

Furthermore, we are confident that we shall keep on developing environment and
human oriented technology as a leading company of future mechanical
engineering field through product development beyond an existing fixed idea.

Bikevalley always shall do our best to move our customers through continuous
technical innovation.


Thank you for visiting Bikevalley blog.