Grin Technologies, in collaboration with MAC Motor, has developed a new type of motor for electric bicycles. It is a combination of a crank engine and an in-wheel motor, which integrates brake energy recovery into a lighter, more efficient and more durable model. The GMAC engine appears in the manufacturer's 2019 catalog, for $ 475.
This technological innovation represents a quantum leap in the field of electric bicycles, which would be a better option in the city than the electric car.
Pedal motor or motor in the wheel?
When you want to buy an electric bike, this question arises: which engine to choose between the pedal and the motor in the wheel? The first, much lighter, offer the most efficient assistance and are much more resistant. The latter, however, offers more raw power, and some models include regeneration, this system to recover energy lost during braking.
Still limited, regeneration allows a gain of 5% autonomy in urban areas. However, the design of these engines is less reliable: they require significant maintenance and resistless well in time.
GMAC: a powerful electric motor that integrates regeneration
Vancouver-based electric bike parts manufacturer Grin Technologies has partnered with Chinese manufacturer MAC Motor to develop GMAC, a hub-and-spoke motor that combines the advantages of two major types of engines.
Unlike conventional wheel motors, the design of this one makes it much lighter and extremely durable.
The GMAC requires much less maintenance and improves the handling of the vehicle. Moreover, he is able to immobilize the electric bike, without having to use the brakes of the latter, thus saving their maintenance. And of course, it integrates regeneration.
GMAC, therefore, offers excellent performance and is making a quantum leap in the electric bike industry. However, as this is a novelty that includes development costs, it is not cheap. This new-generation hub engine has integrated the Grin Technologies 2019 catalog with a price of $ 475.
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