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Engine Electric Bike

What are the existing electric assist bike engines?

Electric What are the existing electric assist bike engines?

Electric bikes are equipped with different types of engines. They differentiate themselves by their assistance management, their maximum power and the use defined for the bike. Review existing systems and their intended use.

Pedal motors

Pedal motors are today the most complete. With an above-average price level, they offer the most efficient assistance and the most proven reliability. To date, the brands manufacturer of crankset engines are:

    
Bosch, Panasonic, Yamaha, Brose, Impulse, Bafang, Tranz'X

Some of these manufacturers are historical industrialists, whose fields of expertise are broad and cover different sectors. The creation of an electric assistance motor is done by bringing together the skills of different sectors in which they practice.

Other manufacturers with lesser known names, such as Impulse, Brose or Tranz'X, were born by merging various competent companies in electronics, batteries and new technologies.

The integration of components now allows the pedal motor to be the most appreciated bike manufacturers, because it adapts easily to any geometry, and thus leaves a great freedom of design to its creators.

Engines in the wheel

Worldwide, the engines located in the wheels are the most manufactured. Simple and inexpensive, they are widespread in the Asian countries where they are produced, and in Europe as an entry-level material.

The entire system linked to a wheel motor involves wiring the various elements running over the entire bike. These elements, subject to projections or possible damage in parking, for example, are not known for their extreme reliability, or for the quality of their assistance.

These engines equip bicycles whose price can go from 500 to 1500 €, showing the great diversity existing in the qualities of these engines. Generally, the bicycles being equipped are bought:

    
For a discovery of the pedelec
    
To travel infrequently, less than 3 km, with little relief

Since their manufacturing origin is sometimes not traceable, most of these engines are not repairable, despite the legal obligations in force.


Engines by friction, on the tire


Friction motors are uncommon. They work as an inverted dynamo. This is the device that is affixed to the tire that drives the wheel, not the other way around.


The Cybien engine, marketed since the early 2000s is reserved for cycling and cyclo-tourism uses. The Rubbee engine, removable, is still in the draft stage but should allow, in a few seconds, to install a system providing electrical assistance to all types of bicycles.


Which electric bike motor will be the most suitable?


Even if each user chooses the engine that corresponds to the sensations of assistance that he prefers,
each motor is initially intended for a defined range of use.


    
Engine located in the "basic" wheel, without mark


These simplistic engines were designed for the discovery of the VAE. As they are not connected to very sophisticated sensors and do not offer well calibrated assistance, they will be used to make small trips or small occasional walks, on paths with little altitude difference. Regular use, given the quality of the components that equip these bikes, results in the accelerated deterioration of some parts.
bikes are equipped with different types of engines.
They differentiate themselves by their assistance management, their maximum power and the use defined for the bike. Review existing systems and their intended use.

Pedal motors

Pedal motors are today the most complete. With an above-average price level, they offer the most efficient assistance and the most proven reliability. To date, the brands manufacturer of crankset engines are:

    
Bosch, Panasonic, Yamaha, Brose, Impulse, Bafang, Tranz'X

Some of these manufacturers are historical industrialists, whose fields of expertise are broad and cover different sectors. The creation of an electric assistance motor is done by bringing together the skills of different sectors in which they practice.

Other manufacturers with lesser known names, such as Impulse, Brose or Tranz'X, were born by merging various competent companies in electronics, batteries and new technologies.

The integration of components now allows the pedal motor to be the most appreciated bike manufacturers, because it adapts easily to any geometry, and thus leaves a great freedom of design to its creators.

Engines in the wheel

Worldwide, the engines located in the wheels are the most manufactured. Simple and inexpensive, they are widespread in the Asian countries where they are produced, and in Europe as an entry-level material.

The entire system linked to a wheel motor involves wiring the various elements running over the entire bike. These elements, subject to projections or possible damage in parking, for example, are not known for their extreme reliability, or for the quality of their assistance.

These engines equip bicycles whose price can go from 500 to 1500 €, showing the great diversity existing in the qualities of these engines. Generally, the bicycles being equipped are bought:

    
For a discovery of the pedelec
    
To travel infrequently, less than 3 km, with little relief

Since their manufacturing origin is sometimes not traceable, most of these engines are not repairable, despite the legal obligations in force.


Engines by friction, on the tire


Friction motors are uncommon. They work as an inverted dynamo. This is the device that is affixed to the tire that drives the wheel, not the other way around.


The Cybien engine, marketed since the early 2000s is reserved for cycling and cyclo-tourism uses. The Rubbee engine, removable, is still in the draft stage but should allow, in a few seconds, to install a system providing electrical assistance to all types of bicycles.


Which electric bike motor will be the most suitable?


Even if each user chooses the engine that corresponds to the sensations of assistance that he prefers,
each motor is initially intended for a defined range of use.


    
Engine located in the "basic" wheel, without mark


These simplistic engines were designed for the discovery of the VAE. As they are not connected to very sophisticated sensors and do not offer well calibrated assistance, they will be used to make small trips or small occasional walks, on paths with little altitude difference. Regular use, given the quality of the components that equip these bikes, results in the accelerated deterioration of some parts.

Engine located in the wheel "Tranz'X" and "Suntour"


The Tranz'X and Suntour brand engines, mainly located in the front wheel are successful. Although equipped with exposed components and running on the bike to connect the various electrical elements, these engines are equipped with sensors similar to those fitted to the high-end pedal motors. With a low price, these engines offer good value for everyday urban use and regular rides.


    
Engine located in the "Panasonic" wheel


The Panasonic engine located in the rear wheel is distinguished from its competitors by its performance. Equipped with a strong torque, and a consequent battery, this sport engine allows outings, on asphalt or road, on strong unevennesses. Its thrust capabilities, given its power, are considerable. The feeling of assistance remains very lively and should be reserved for sports cyclists used to technical trails.


    
"Panasonic" pedal motor


The world's first large-scale pedal engine, it is known for its high reliability. It offers a simple operation but does not offer power to face serenely mountains. On the other hand, it will be perfect for a daily and intensive use, at a price content.


    
"Yamaha" pedal motor


Yamaha is one of the historic makers of electric bike motor. The brand has been manufacturing electric motors for bicycles since the 1990s. The engine marketed today has the advantage of offering a lot of torque at low cadence, and good autonomy. It is an engine that enhances both regular outings in VTC, a daily urban use or mountain biking hikes.


    
"Bosch Active" pedal motor


Bosch has been manufacturing motors for electric bikes since 2010. The active version is an extension of the brand's first engine, redesigned in 2013. This engine is intended for urban use, hilly rides, and hikes. Very ergonomic, it is also the engine offering the greatest autonomy to date, when coupled with a 500Wh battery.


    
"Bosch Performance" pedal motor


Declining the Bosch Active engine offering more torque, the Bosch Performance stands out by offering 20% ​​more strength. This additional assistance destines it for the same uses, while being able to face more pronounced reliefs. Also used in mountain biking, this engine has a feature that can become a disadvantage for non-sport cyclists or resuming activity. It offers maximum torque only at a high pedaling rate, unlike Yamaha and Brose engines.


    
"Bosch CX" pedal motor


The Bosch CX engine is the new flagship of the range. It is also the most complete. Intended for use purely VTTAE or E-MTB, it allows to obtain a high torque, regardless of the rate at which the cyclist pedal. So, whether on the flat, on a long transmission ratio, or in a steep climb, where the transmission does not allow you to pedal with enough pace, it assists with the same power.


    
"Impulse 2.0" pedal motor


The Impulse engine equips the Derby-Cycle bike brands such as Kalkhoff, Focus, Raleigh, Rixe and Univega. Several generations of Impulse engines have succeeded to offer this version Impulse 2.0 presented in 2014. Impulse has developed this engine so that it adapts perfectly to any type of transmission, whether by derailleur or hub. The engine is set according to the bike equipment and adapts to the uses that are preferred: in town, ride or hike.


    
"Impulse Evo RS" pedal motor


The Evo RS version of the Impulse engines is designed for the sporting uses of a pedelec. Thus, this set is intended to accompany sporty and racy urban bikes, as well as electric-assisted mountain bikes that can be used in the mountains, given the torque offered by this engine.


    
"Brose" pedal motor


Brose is a brand recently invested in power-assisted engines. Working with many brands, this engine has the particularity to offer the highest torque on the market. The sensations offered by this system are to relativize with the use, since the maximum torque is offered at low pedaling rate. Thus, one can not play the rotation of the legs to offer more ability to cross the bike.


The principles of operation of power-assisted bicycle engines are all the same, but are differentiated by the quality of their internal components and sensors to refine the power they offer.