Dekra D-Drive Bike: No Chains, No Derailleur, & No Sprocket! (Link)

Well, the idea of a bike without a chain may have seemed equally as revolutionary to some, but it is this concept that makes the Dekra D-Drive a truly innovative bike.

Dekra's D-Drive chainless drive system replaces the parts of a bike that cause the most problems – the chain and derailleur. By doing so, it also eliminates the grease, maintenance, torn clothing and other issues common with chain-driven bikes.



In addition to eliminating the fuss and mess of a chain, D-Drive provides other advantages over a chain that include:

• Compact performance The D-Drive system is compact, taking up less overall space on the bike.
• Safety The D-Drive system eliminates any danger of clothing or fingers being caught in the chain or sprockets.
• Durability D-Drive's internal drive shaft is less likely to sustain damage from falls and road debris.
• Less maintenance The D-Drive system does not require the cleaning, lubrication and annual "check-ups" that a chain-driven bike requires.
• Weather protection While a chain is continually exposed to rain, mud, and other weather-related conditions, D-Drive is protected from the elements.
• Cleanliness Unlike a chain, D-Drive does not require a lubricant, such as oil, to operate. Therefore, there’s no chance of staining clothing or hands.
• Longer life The D-Drive system has a significantly longer life than that of a chain. In fact, D-Drive carries a warranty for the life of your bike.

The Dekra D-Drive uses a drive shaft to transmit power from the bike pedals to the rear wheel. This drive shaft employs a fully-enclosed bevel gear system made of a lightweight, yet highly durable, aluminum alloy. Shimano internal gears within the rear wheel enable the D-Drive system to deliver smooth, quiet performance while optimizing pedaling efficiency. A three-speed Shimano "twist and go" gear system provides easy, responsive gear shifting operated at the hand grip. So there's no more grasping for hard to reach gear shift levers!

It is available in two models for men and women each for (US $300).

Read Also:
New bicycle design eliminates chain, derailleur and sprocket (Gizmag)
Dekra D-Drive bike trades the chain for direct-drive (Engadget)