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Bosch Parts
Bosch Parts - Eine Auswahl der wesentlichen Komponenten eines Boschsystems: CX Motor, Intuvia Display, Bedieneinheit und der Bosch Akku. Dieses System nutzen die meisten Fahrradhersteller für ihre Mountainbikes im mittleren Preissegment.
Bosch Parts 2
Bosch Parts 2 - Das Bosch Purion Display bietet die wesentlichen Informationen im kompakten und schlichten Design; das große Bosch Nyon Display mit GPS und Smart Phone Anschluss, maßgefertigte Kettenblätter (Offset, drop stop) und das integrierte Akkugehäuse bei den neuesten Bikes.
eMTBnews BOSCH inside 5
eMTBnews BOSCH inside 5
Das kleine Bosch Purion-Display hat alles was ein Display braucht
Das kleine Bosch Purion-Display hat alles was ein Display braucht - es sitzt links außen am Griff, lässt sich einfach bedienen und kommt bei E-Mountainbikes sehr viel zum Einsatz
Das Bosch Intuvia ist viel verbaut, sitzt mittig über dem Lenker und ist gut lesbar
Das Bosch Intuvia ist viel verbaut, sitzt mittig über dem Lenker und ist gut lesbar - aktuell kommt es mehr bei E-City- oder E-Trekkingbikes zum Einsatz
Mit dieser Remote-Einheit kann man bequem durch die Menüs des Bosch Intuvia-Displays schalten
Mit dieser Remote-Einheit kann man bequem durch die Menüs des Bosch Intuvia-Displays schalten - und die Unterstützungs-Modi auswählen
Das große Bosch Nyon-Display ist purer Hightech
Das große Bosch Nyon-Display ist purer Hightech - es liefert sämtliche Daten zur Akku und Reichweite, kann Navigieren und errechnet eine persönliche CO2-Billanz
Trek Powerfly LT 9 Bosch Performance CX
Trek Powerfly LT 9 Bosch Performance CX - der integrierte Bosch PowerTube 500 wird seitlich aus dem Unterrohr entnommen
CUBE Stereo Hybrid 160 Action Team mit Bosch Performance CX
CUBE Stereo Hybrid 160 Action Team mit Bosch Performance CX - der integrierte Bosch PowerTube 500 wird nach unten aus dem Unterrohr entnommen
Brose
Brose - Die bekanntesten Fahrradhersteller mit einem Brosesystem. Auffällig ist die Art und Weise, wie Akku und Motor in das Rahmendesign integriert wurden. Die Bedieneinheit ist auch anders, da sie komplett für den Fahrradhersteller individuell angefertigt wurde.
Brose 2
Brose 2 - Specialized verfügt über ein sehr kurzes Ladekabel und die Aufladung des Akkus erfolgt am Bike selbst, der Lenker vom Rotwild ist frei von jeglichem Wirrwarr und besitzt ein kleines Display. Bei Specialized ist der Geschwindigkeitssensor an der Bremsscheibe montiert. Beide Hersteller verwenden Standardgrößen für ihre Kettenblätter.
Kompakt und 2,9 kg leicht: Brose Drive S Mag
Kompakt und 2,9 kg leicht: Brose Drive S Mag
Die Konstruktion des Getriebes wurde nicht verändert
Die Konstruktion des Getriebes wurde nicht verändert - aber das Einbauvolumen des Motors wurde deutlich reduziert
Hier kann man gut ins Innere des Brose Drive S Mag schauen ...
Hier kann man gut ins Innere des Brose Drive S Mag schauen ...
... erkennt gut die einzelnen Baugruppen
... erkennt gut die einzelnen Baugruppen
Dank dem speziell konstruierten Freilauf im Motor, fährt sich der Brose Drive S so homogen
Dank dem speziell konstruierten Freilauf im Motor, fährt sich der Brose Drive S so homogen - der Klemmkörperfreilauf der Firma GMN aus Nürnberg sitzt unter dem Magnesiumriemenrad und entkoppelt den Motor zu 100 %
Brose Drive S Mag mit Magnesiumgehäuse
Brose Drive S Mag mit Magnesiumgehäuse - 2,9 Kilogramm leicht und dank neuem Flex Power Modus liefert dieser Motor satte 410 % Unterstützung
Durch die Montage-Augen können Rahmenbauer auch an Gewicht sparen
Durch die Montage-Augen können Rahmenbauer auch an Gewicht sparen
Hier sieht man die 6 Montagepunkte des Brose Drive S Mag
Hier sieht man die 6 Montagepunkte des Brose Drive S Mag
Brose Drive S Mag
Brose Drive S Mag - die innere Konstruktion gibt die Größe vor, konnte aber dennoch im Einbauvolumen reduziert werden
Leistungsdiagramm des Brose Drive S Mag
Leistungsdiagramm des Brose Drive S Mag - mit 410 % max. Unterstützung sorgt dieser Motor vor 100% bei der Agilität und der Dynamik
Leistungsdiagramm des Brose Drive S Alu
Leistungsdiagramm des Brose Drive S Alu - 380 % in der Spitze und ausgewogen bei Fahrdynamik und Agilität
Leistungsdiagramm des Brose Drive T
Leistungsdiagramm des Brose Drive T - diese Motorvariante ist auf maximale Reichweite ausgelegt und liefert ein Drehmoment von 70 Nm
Specialized Turbo Levo Expert FSR
Specialized Turbo Levo Expert FSR - Federweg: 150/150 mm | Motor: Specialized Custom 2.1 | Preis: 7.999 € (UVP)
Rotwild E+
Rotwild E+
Shimano Parts
Shimano Parts - Der Shimano Motor ist kompakt und lässt Spielraum bei der Positionierung des Hinterrads. Das Display ist klein und abgestimmt auf Shimanos Di2 System. Die Bedieneinheit schaut aus und fühlt sich an wie ein normaler Schalthebel. Der Akku ist in diesem Fall am Unterrohr angebracht und das Kettenblatt fällt normal groß aus.
Shimano 2
Shimano 2 - Ein Lenkeraufbau mit Shimano Komponenten, wo das Di2 System mit dem E8000 Antrieb verwendet werden kann. Die Integrierung des Akkus in den Rahmen ist für die Zukunft vorgesehen. Die Kettenstrebelänge kann die gleiche sein wie bei marktführenden nicht E-Bikes.
Shimano E8000 zerlegt
Shimano E8000 zerlegt
Shimano Steps Prototype
Shimano Steps Prototype - Fahrradentwickler können auf ein kompaktes System zurückgreifen.
Yamaha 1
Yamaha 1 - Die PW-Motor-Serie. Ein individuell anpassbares Display. Das Yamaha System verfügt über eine integrierbare Akkuform. Kettenblätter in Standardgröße sind die Regel.<br>
Yamaha 2
Yamaha 2 - Ein Standard Yamaha-Display. Eine individuell für den Kunden angefertigte Bedieneinheit bei Giant. Der hintere Dämpfer und die Platzierung des Gelenks entspricht in etwa einem normalen Mountainbike. Der Akku ist im Rahmen integriert.
Display A von Yamaha
Display A von Yamaha - dieses kleine Display liefert alle Informationen die man auf dem Trail braucht und lässt sich intuitiv bedienen
Yamaha Remote-Einheit am Giant Trance E+
Yamaha Remote-Einheit am Giant Trance E+ - griffig und übersichtlich – so muss eine kleine Bedieneinheit sein
Remote-Einheit von Yamaha am Haibike
Remote-Einheit von Yamaha am Haibike - funktioniert, aber leider besitzt dieses Bauteil den Charme aus den späten 1980ern. Optik und Haptik sind nicht zeitgemäß.
Lapierre Overvolt XC400
Lapierre Overvolt XC400
Full-E+ 1 Black Red Orange
Full-E+ 1 Black Red Orange
Dank der kompakt-schlanken Bauform lässt sich das Fazua-System gut im Rahmen integrieren
Dank der kompakt-schlanken Bauform lässt sich das Fazua-System gut im Rahmen integrieren
Das Tretlager Fazua evation 1.0 ist minimalistisch gestaltet
Das Tretlager Fazua evation 1.0 ist minimalistisch gestaltet - und hat einen Q-Faktor von schmalen 135 mm
Am Akku befindet sich die Ladebuchse, ein On/Off-Button und die Ladestands-Anzeige
Am Akku befindet sich die Ladebuchse, ein On/Off-Button und die Ladestands-Anzeige
Der kleine Akku ist knappe 1,5 kg leicht und hat eine Kapazität von 252 Wh
Der kleine Akku ist knappe 1,5 kg leicht und hat eine Kapazität von 252 Wh
Links der Akku, rechts der Motor mit der Akkuaufnahme
Links der Akku, rechts der Motor mit der Akkuaufnahme - beides vereint ergibt das Herzstück des smarten Fazua evation 1.0 Antriebskonzeptes
Die Remote-Einheit des Fazua evation 1.0 informiert mittels farblich unterschiedliche LEDs über die angewählte Unterstützungsstufe
Die Remote-Einheit des Fazua evation 1.0 informiert mittels farblich unterschiedliche LEDs über die angewählte Unterstützungsstufe - Grün - niedrige Unterstützungsstufe (75% / 125 W), Blau - mittlere Unterstützungsstufe (150% / 250 W), Rosa - höchste Unterstützungsstufe (240% / 400 W), Weiß - keine Unterstützung
Der kreisrunde TQ120S misst 144 mm im Durchmesser und leistet brachiale 120 Nm
Der kreisrunde TQ120S misst 144 mm im Durchmesser und leistet brachiale 120 Nm - damit zählt er zu den stärksten Pedelec-Motoren auf dem Markt
Im Haibike Flyon sitzt der TQ120S von TQ-Systems
Im Haibike Flyon sitzt der TQ120S von TQ-Systems - und treibt dieses E-Mountainbike mit Vollgas über den Trail
Beim Drehmoment-Sensor handelt es sich um das Röllchen zwischen Kettenblatt und Motorritzel
Beim Drehmoment-Sensor handelt es sich um das Röllchen zwischen Kettenblatt und Motorritzel - darüber wird die Kettenspannung gemessen.
Powerplay™ System
Powerplay™ System
Rocky Mountain Altitude Power Play
Rocky Mountain Altitude Power Play
Die Motorabdeckung auf der Nicht-Antriebs-Seite
Die Motorabdeckung auf der Nicht-Antriebs-Seite
Die Lenkerfernbedienung
Die Lenkerfernbedienung

This post is also available in: deDeutsch

E-bikes in general follow the same construction pattern as normal mountain bikes. Bike companies build a frame then specify the parts. In the case of E-bikes the motor systems have more influence on the design of the bike. The emergence of a few main motor systems has taken place. The systems we are looking at are Bosch, Brose, Panasonic, Shimano and Yamaha.

In the last years we have been testing and riding many different types of E-mountain bike, each based around the mentioned systems. We have summarised the information on each motor system and how they are typically presented. We have tried to understand what the main features and design possibilities of all the current systems are.

There are a few other systems but our choice is the main five that most bike makers have been using. We have focused on their high end models. We have explained a few real world characteristics about each system. Some bike makers use the same motors differently, where possible we have a few examples of how each is used and why.

The Market Leader: Bosch

The most established motor system in the market so far, Bosch have many years of experience with motors from their vast empire of automotive and domestic products. Their latest solution for performance E-mountain bikes is the CX performance line motor and battery.

Bosch Parts
# Bosch Parts - Overview of the Bosch system: CX Motor, Intuvia Display, battery and the Bosch power control. This system is designed for performance level mountain bikes.


Bosch has a wide variety of options but the most common system we have used on off road bikes is based around the CX performance line which has generally been specified as following:-

Technical Data

  • Performance Line CX.
  • 25km/h top speed for off-road.
  • Maximum Torque 75nm-1
  • 250w motor power.
  • Battery 36V 13.4Ah 500 w/h lithium ion.
  • Battery available is a power tube or frame mounted version.
  • Chain ring size 14-15-16T depending on bike brand.
  • Weight: <4 kilos motor / 2.7 kilos battery.
  • Full recharge in 4.5 hours.
  • Display shows speed, distance, power support level, battery level and time.
  • Remote on handle bar with options for increase or decreasing the power.
  • Dual battery system is now available.
Bosch Parts 2
# Bosch Parts 2 - The Bosch Purion Display is compact and gives essential information. The Nyon display gives GPS tracks and full tech information of power inputs. Bosch batteries are integrated in many ways now.

New in 2017: integrated “Power Tube” battery

These are approximate specifications of the most commonly found setups, however for 2017 there has been development of a few new options by Bosch and other component makers. This includes the integrated battery called Bosch Power Tube.

This is Bosch's PowerTube 500
# This is Bosch's PowerTube 500
Inside the Bosch CX-motor
# Inside the Bosch CX-motor

All of these recent developments are to make the system more suitable for off-road use. The original purpose for Bosch motors was road riders. Off-road users have different requirements in general, off road is a more extreme environment that Bosch now fully caters to.

Real World Observations Of The Bosch System:

With so many different bikes tested over time we have formulated a few product points that are particular to the current Bosch system:-

  • Bikes with Bosch tend to have longer chain stays, each company that uses Bosch have different design methods for optimised chain stay length.
  • Fairly standard bottom bracket placement for each motor across all brands.
  • A new variable battery format means battery size and placement is now adaptable on most bikes, with the battery being stored on the down-tube in place of the water bottle or in the downtube in a more integrated design.
  • A large centrally mounted handle bar display that is very central to the operation of the system.
  • A spoke mounted speed sensor magnet.
  • A power control remote/display on the left side of the handlebar.
  • Small chainring influences chain path and rear frame layout.
  • Large market penetration and therefore better availability of support and spares.
Bosch Display
# Bosch Display - A standard Bosch display setup.
The KTM Macina Kapoho 2018
# The KTM Macina Kapoho 2018
Haibike XDURO DwnHll 10.0
# Haibike XDURO DwnHll 10.0 - the e-downhiller

Photos: Frame designs are evolving to allow battery placement that improves performance, some bike makers also alter chain-lines to improve the possibilities of rear frame layout.

Here you can find eBikes with Bosch motors

The Adaptable Brand: Brose

Brose is a very similar company to Bosch, with based in Germany and produces motor systems for automotive and other motorised goods. Fairly new to the bike market their main contribution is an alternative system for bike makers to consider that is more open and flexible than other systems.

They have spent a lot of time developing their Drive T system and now it has evolved into the Drive S. With sixteen new electronic parts and better head management due to a new internal design and better sealing the Drive S has improved performance. The Drive S has 15 per percent more power than before:-

Brose
# Brose - The bike designer has flexibility with the Brose system to integrate into the frame with flexibility. The display can be customised or even completely absent if the designer wishes.

Technical Data

Brose is an open source style system. It has a wide variety of possibilities in how it can be mounted and in what position. Battery integration is a key aspect of a Brose system.

  • 25km/h top speed for off-road.
  • Dimensions 213 x 150 x 128 mm.
  • Custom Battery (Specialized, 504Wh, ANT+/BT module, IP 67).
  • Mid-drive motor.
  • Motor Weight 3.4 kg.
  • Nominal voltage 36 V 250 W
  • Maximum Torque 90 nm-1
  • Chain ring size 32-38T depending on bike brand.
  • Full recharge in about 4 hours.
  • Display depends on bike maker, Rotwild shows speed, power support level, battery level on bar, Specilized uses an App, GPS device or a small bluetooth display or nothing. With the display being on the battery only.
  • Remote on handle bar with options for increase or decreasing the power.
  • Recommended service interval is 15,000km.

Because Brose is an Open System there are many personalised features bike makers have created on their particular bikes. The Drive S motor will be available in 2018. Bikes with the Drive T motor can be upgraded to the Drive S.

Brose 2
# Brose 2 - Specialized has a short power connector. The bar from Rotwild is wide and low impact/no clutter. Specialized have used a magnet on the brake disc for their speed sensor. Rotwild uses a standard chainwheel size.

Real World Observations Of The Brose System:

There are not as many Brose bikes on the market yet but our experiences are fairly similar with both tested models so far, these are our design notes about Brose:-

  • Chain stay length is closer to non pedal assist mountain bikes.
  • Chain stay length is closer to non pedal assist mountain bikes.
  • Each brands frame design is unique.
  • Batteries are integrated into the frame design and allow a “normal” looking bike.
  • There is either no handle bar display or a very small one that doubles as a remote.
  • It is possible to mount the speed sensor where you want.
  • Customised connections to smart phone applications are possible.
  • Standard chainring sizes means chain path and rear frame layout is more flexible.
  • Support and spares linked closely to place of purchase.
  • Drive T only gives peaks of power. Drive S gives a more sustained power.
Specialized Turbo Levo
# Specialized Turbo Levo
Rotwild E+
# Rotwild E+

Most bike brands that use Brose motors have produced a more integrated looking bicycle.

We also disassembled the Brose Motor
# We also disassembled the Brose Motor

We also took the Brose Motor apart – for interesting photos & details check this article: Inside the Brose Motor

Here you can find tests with the Brose motor mounted. eBikes with Brose engines.

The Latest Entrant: Shimano

As the latest entrant to the E-mountain bike motor market Shimano have used their considerable experience and understanding of the bike industry to produce the Steps E8000 motor.

The Shimano motor is compact and gives flexibility in rear wheel placement. The display is small and complimentary to Shimano’s Di2 system. The power remote looks and feels like a normal shifter unit. The battery is placed on the down tube in most cases, bikes use a normal chain ring size:-

Shimano Parts
# Shimano Parts - The Shimano motor is compact and gives lots of room to place the rear wheel close to the pedal axle. The display is small and can be integrated with Di2. The power switch looks like a normal gear shifter. The battery is normal size but easily integrated.

Technical Data

Shimano is a specific closed system that is possible to integrate with it’s electronic shifting. Shimano’s ethos is fully realised in this system:-

  • 25km/h top speed for off-road.
• 25km/h top speed for off-road.
  • A normal mountain bike Q-factor, the same as an XT crank set.
  • Shimano battery rated to 500 w/h.
  • Shimano E8000 steps drive unit.
 • 70 nm-1 of torque.
  • Motor Weight 3.2 kilos.
  • Nominal voltage 36 V 250 W
  • Hollow tech bottom bracket axle.
  • Chain ring size 34-38T depending on choice.
  • Full recharge in about 4 hours.
  • Display is discrete and mounted on the handle bar. Fully customisable by bluetooth with the available app. Display shows power mode, speed/dist/remain, battery level and selected gear.
  • E-Tube app with power tuning per mode available from August 2018.
  • Shifter style Remote on handle left bar with options for increase or decreasing the power full integration with Di2.
  • Reliable Chain guide to keep chain on.
  • Works with 10 or 11 speed systems.

Shimano’s system is very technical in nature and shows a heritage from the bike industry, the ability to integrate with Di2 is a strong feature.

Shimano 2
# Shimano 2 - The Shimano standard of components. Di2 connects to the motor system. The Shimano battery can be integrated into the frame or customized. You can use after market chain rings on the chain set.
Shimano E8000 inside.
# Shimano E8000 inside.

We have dismantled the Shimano motor, here you can find interesting photos and details.

Real World Observations Of The Shimano System:

There were very few Shimano based products currently out there until 2017 where most of the major bike makers introduced Shimano based systems. We have tested them extensively and have these observations:-

  • Chain stay length is normal.
  • Flexibility of frame design is possible.
  • Batteries are integrated or tube mounted.
  • Shimano allows custom batteries in some cases.
  • A very small display.
  • User updatable firmware upgrades with E-Tube app.
  • The speed sensor is a spoke magnet or a disc magnet.
  • Standard chainring sizes means chain path and rear frame layout is more flexible.
  • Support and spares is an established global network.

Here you can find tests with Shimano motors eBikes with Shimano motors.

Our testbike didn't have the final graphics
# Our testbike didn't have the final graphics - some changes are possible

The Alternative: Yamaha

The Yamaha system is offered by some bike companies as an alternative in their lineup to Bosch. Yamaha has the PW series drive unit and the PW-X units in it’s lineup:

Yamaha 1
# Yamaha 1 - The PW motor series. Individual custom display. The battery can take an integrated form. The rear chain stay length is a medium length solution.

Technical Data

Yamaha offers these specifications, it is worth noting that the control system can be customised by a bike brand.

  • 25km/h top speed for off-road.
  • Three/four sensors to sense pedalling inputs, focus on a natural feeling.
  • Integrated battery possibilities rated to 500 w/h.
  • PW motor 80 nm-1 of peak torque 70 nm-1 in normal conditions.
  • PW-X motor 80 nm-1 of peak torque, but higher cadences are possible to 120 rpm.
  • Motor Weight 3.5 kilos PW 3.1 kilos PW-X.
  • Nominal voltage 36 V 250 W
  • Normal Chain ring size.
  • Three display opitions, LCD, LED or a custom display provided by bike company.
  • Robust remote or use the LED switch.
  • Chain guide and front derailleur compatible.

Yamaha seems to be offering a middle of the road experience between customisation and standardised systems. Giant bicycles have taken the Yamaha motor and customised it for their own use.

Yamaha 2
# Yamaha 2 - A standard Yamaha Display. An Individual custom display. The motor allows a normal pivot point location. The battery is well formed to the frame.

Real World Observations Of The Yamaha System:

Yamaha is a powerhouse that has the money to innovate and grow according to how the market develops:-

  • Chain stay length possibilities are comparable to Brose system.
  • Batteries can be integrated or tube mounted allowing a normal look to the bike.
  • Displays are customisable and can be programmed by an app at a dealer.
  • The speed sensor is a spoke magnet.
  • Standard chainring sizes means chain path and rear frame layout is more flexible, front derailleurs can be used.
  • Support and spares is dependent on the place you buy the bike.

Lapierre Overvolt XC400
# Lapierre Overvolt XC400
Full-E+ 1 Black Red Orange
# Full-E+ 1 Black Red Orange

Giant Dirt-E+ 1 Pro LTD
# Giant Dirt-E+ 1 Pro LTD

Two brands that have chosen to use Yamaha, Giant and Lapierre. Giant customises heavily their application of Yamaha products.

Here you can find tests from eBikes with Yamaha motors.

Other Less Used Motors

During 2017 the market has increased with a number of new players. The most notable products on the market that are different are Panasonic and Rocky Mountain. Panasonic is like the other motor makers, it provides a bolt on system with some customisable upgrades. Rocky Mountain is a completely custom system that only works on one particular bike, however we have included it because it opens up the market and gives people an idea of where bike makers might be heading with a completely custom system in the future.

Panasonic

Panasonic interestingly offers a motor with an integrated two speed system as well as the standard one speed motor. Their system can be mounted with a 632 W/h battery as well as smaller batteries give a huge extended range as standard.

Panasonic Motor and Power System
# Panasonic Motor and Power System

Technical Data

Panasonic offers these specifications, it is worth noting that the control system can also be customised by a bike brand, for example Flyer.

  • 25km/h top speed for off-road.
  • High-precision non-touch torque sensor focus on a natural feeling.
  • Possibility of one or two speed motor.
  • Battery possibilities rated up to 648 w/h.
  • 60 nm-1 torque
  • Motor Weight 4.0 kilos.
  • Nominal voltage 36 V 250 W
  • Normal Chain ring size.
  • Variable display options, Large LCD, or a custom display provided by bike company.
  • Technical remote with tactic feedback when changing modes.
  • Chain guide compatible.
Flyer D1 Display For Panasonic
# Flyer D1 Display For Panasonic - The display is able to connect to the internet and carryout automatic updates and service queries with Flyer headquarters.

Real World Observations Of The Panasonic System:

Panasonic has been on the market for a while, but mainly on city bikes. It has taken a technical approach to the market that focuses on highly connected intelligent bikes.

  • Chain stay length possibilities are comparable to other systems, with mid length chain stays possible.
  • Batteries can be semi-integrated in design.
  • Displays are customisable and can be programmed by an app at a dealer and even offer remote bike servicing advice by the dealer with an internet connection.
  • The speed sensor is a spoke magnet.
  • Standard chainring sizes means chain path and rear frame layout is more flexible.
  • Support and spares is dependent on the place you buy the bike and are dealer dependent.
The Flyer Uproc 7 8.70
# The Flyer Uproc 7 8.70 - This is a high end Panasonic motor mounted bike.

Here you can find tests from eBikes with Panasonic motors.

Rocky Mountain’s Custom Motor

We have included this motor because it is an example of a company making their own completely custom unit and bike. Nothing is standard about the motor Rocky Mountain have used.

Rocky Mountain Power Play
# Rocky Mountain Power Play - The motor solution is totally custom with all in house control solutions. It is also possible to plug in to the bike. The remote is very small and there is no display.

Technical Data

  • Three phase motor.
  • 48 V battery.
  • In frame totally integrated system.
  • No display, just led lights.
  • Optional E-mountain bike app.
  • 500 Wh or 632 Wh Lithium-Ion battery.
  • Serviceable with normal bike tools in all bike shops.
  • Torque up to 100 nm-1
Torque sensors On The Motor
# Torque sensors On The Motor - The chain path on the Power Play motor allows chain tension to be measured and gives a natural feel to the rider.

Real World Observations Of The Rocky Mountain System:

Rocky Mountain were brave making a totally custom system, however their approach is sure to be copied by other companies as the market matures and designers seek better performance with off-road bikes.

  • Chain stay length possibilities are short (420mm),  the same as their normal Enduro bikes.
  • Batteries charge quickly and are integrated.
  • Rocky Mountain prefers no display on the bar.
  • The speed sensor is a disc magnet.
  • A special chain path and sprocket layout gives a pretty powerful direct feel.
  • Support and spares is dependent on the place you buy the bike dealer dependent, but you can change all the parts by yourself.
A very low profile design with their custom motor.
# A very low profile design with their custom motor. - Unless you knew it was an E-bike you wouldnt know it was an E-bike.

Opinion @emtb-news.de

We will be continuing our tests in to the future with a range of different systems and riders. Therefore we think that looking at the specifications in this way is a good start if you want to understand why bike makers have produced the bikes they have. It is a complicated market that is innovating quickly. Stay tuned for updates.

Is there a particular motor characteristic you want that is not yet on the market?

Fotos: Shimano, Giant, Lapierre/Damian McArthur, Alex Boyce, Rico Hasse, Jens Staudt

This post is also available in: deDeutsch

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