Eco-Vehicle and Machine

No sprocket and chain in driving system          

Smaller backlash, more efficient and strong

More reliable and running quiet

Less maintenance and repair required

Gain Maximum mechanical advantage

Gain Maximum torque to rotate wheel

Rectilinear propelling motion

About 90% human natural linear motion utilized

About 90% linear propelling motion to do Work

About 90% linear propelling force utilized

About 90% human energy harvested

Drive system can be coupled in any wheel

Easy to configure into folding style

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Existing Sprocket-Chain HPV

With sprocket and chain in driving system          

Larger backlash, less efficient, and weak

Less reliable and running with noise

Frequent maintenance and repair required

Not gaining any mechanical advantage

Gaining limited torque to rotate wheel

Circular propelling motion

About 25% human body natural motion used

About 25%  circular pedalling motion to do Work

About 25% of circular propelling force utilized

About 60% human energy wasted

Rear wheel drive only with sprocket-chain

Restricted by the sprocket-chain drive system


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