CarvX, 4 Wheels Bicycle for Extreme Off Road Experience

TheFuture — Wed, 15 Oct 2008 07:11:41 +0000

This new concept is going to offer a 4 wheels bicycle with extremely unique features. It is hard to believe that CarvX is a leaning bike with four wheels which can lean all the wheels with the help of steering techniques. This unique technique will surely provide new way of riding a bicycle. The frame of this bicycle is made from aluminum and has 4 independent double wishbone suspensions. Not only this, bike is equipped with 4 hydraulic disc brakes and 14 speed Rohloff hub. There is no need for much power from your side in order to achieve high speed and falling or loss of control is just impossible with CarvX.

Designer : GBO DESIGN

Pi Electric Bicycle with Semi-Automatic 8-Speed Transmission

TheFuture — Thu, 03 Jul 2008 07:00:32 +0000

The Pi electric bicycle uses a semi-automatic 8-speed transmission to downshift into a lower gear for climbing hills, then up shift for rapid acceleration to a maximum of 20 mph on flats and allows you to pedal normally because the motor automatically disengages when not in use. Powered by a 750-watt electric motor housed in the horizontal chain and motor assembly, the Pi electric bicycle is capable of three modes of operation: electric motor power, human power, or the human-electric hybrid power combination. The electric motor and rider utilize the same 8 speed semi-automatic transmission making rapid acceleration from a stop or lower gears available for steep inclines possible (but with slower acceleration.

The motor automatically disengages from the pedals when desired so as to preserve battery life. Construction begins with a 12’ foot straight piece of 3⁄8-gauge, aircraft aluminum 6061 alloy that is roll-formed and annealed for uniform wall thickness into a complete 6′ diameter circular tube with a 4″ exterior diameter (the NiMH batteries reside within the tube from the front fork to the seat), which is then bisected to make a 6′ long arc for the bicycle’s frame. The sturdy frame supports riders up to 300 lbs.

The top of the arc provides a 26″ stand over height, allowing you to place both feet on the ground. The padded ergonomic gel seat provides for comfortable, relaxed riding. It attaches to the frame via a gas strut assembly that raises and lowers like a pneumatic office chair, accommodating riders between 5-7′ tall in a semi-recumbent position for ideal pedaling or powered coasting. A dynamo in the front wheel’s hub provides power for auxiliary lighting.

The bicycle has a range of up to 30 miles at 20 mph before requiring a five-hour re-charge from its AC adapter. Precisely tuned hydraulic disc brakes provide sure stops, and the wheels are made of dual-walled aluminum alloy and stainless-steel spokes; the 26″ semi-slick tires are ideal for roads or paved trails and use Presta valves. The bicycle is wet-painted in Rossa Corsa red using the same PPG color specification as high performance sports cars and treated with a clear coat finish for a luster that will last.

Designer : Marcu Hayes

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CarvX, 4 Wheels Bicycle for Extreme Off Road Experience

Pi Electric Bicycle with Semi-Automatic 8-Speed Transmission