Components

E-bike motors

- Many CX errors are caused by simple issues such as sensor or button faults and can often be resolved by restarting the device and carrying out a visual inspection.  
- Certain error codes (e.g. 440, 450, 500, 602, 603) must be diagnosed by a specialist workshop; under no circumstances should the motor or battery compartments be opened.  
- Common checks: battery fit, display, connectors, temperature, speed sensor/magnet, and software version via the eBike Flow app.

Bosch Performance Line CX Gen5: The most important error codes and their causes

- Range depends on many factors; manufacturers’ figures are ideal values and often differ significantly from real-world conditions.  
- Battery capacity, total weight, route profile and assistance level are key factors affecting power consumption and route planning.  
- Cold weather can reduce range by up to 50% in winter; store the battery in a warm place and only fit it shortly before setting off.

Is your e-bike battery flat? These factors affect your e-bike’s range

E-Bike MOTORS

- Carbon belts on e-bikes do not require oil, as they operate without joints and transmit power via their toothed surface.
- Oiling belt drives leads to dirt build-up, increased wear, noise and can reduce grip on the pulleys.
- Proper care: Clean the belt with water and a soft brush, check for damage and foreign objects, and ensure the belt is correctly tensioned and the pulleys are clean.

Should you oil the belt drive on an e-bike? This mistake could ruin the drive system

- Heat puts a strain on the e-bike’s motor and battery; safety mechanisms will reduce power or shut down the system when critical temperatures are reached.
- Protect the battery from the sun and heat: do not leave it in a hot car or park it in direct sunlight, do not charge it when it is hot, and adjust your cadence and riding mode.
- Plan your rides for cooler times of day, choose shaded routes, drink plenty of fluids, replenish electrolytes and protect yourself with suitable clothing and sun cream.

E-bike batteries and motors in hot weather: what e-bike riders need to bear in mind in the height of summer

- PowerMore 250 offers 250 Wh of additional capacity, significantly extending the range and transforming 400 Wh ‘Light’ e-MTBs in particular into long-distance bikes.  
- Energy management with batteries operating in parallel works reliably; it is also possible to use the bike with just the PowerMore, for example in a bike park.  
- Points of criticism include its heavy weight, a fiddly and wear-prone mounting bracket, and the cumbersome, non-parallel charging process for the main and auxiliary batteries.

Bosch PowerMore 250 Range Extender Review: Greater range, but poor handling

- MGUs with a continuously variable eCVT from Avinox and Gobao are designed to replace derailleurs and offer a low-wear, automatic drivetrain with an ideal cadence.
- Unlike the expensive Pinion MGU, Avinox and Gobao rely on a twin-motor eCVT planetary gearbox with fewer components, delivering up to 150 Nm and 1,500 watts.
- Disadvantages of eCVT systems include a lack of complete decoupling, variable efficiency, potential noise levels and a riding experience that is heavily dependent on software.

eCVT motors under the microscope: A new era for e-bikes thanks to Gobao and Avinox?

- The Bosch Hub Line is a 2.3-kg hub motor delivering 45 Nm and up to 400 W, which can be fully integrated into the Bosch Smart System and upgraded with Powermore 250.  
- Riding experience: direct acceleration and good performance, but noticeably less direct than mid-drive motors; completely decoupled above 25 km/h, lower wear and tear.  
- Range is very good for a 360 Wh battery, but the motor is audible and clearly noticeable at the 25 km/h limit; not quieter than mid-drive motors.

Bosch Hub Line put to the test: Here’s what the new Bosch motor is like to ride

- Range is increased by using low assistance levels, a high cadence, anticipatory riding and economical acceleration.
- Correct tyre pressure, tyres suited to the terrain, reduced luggage and sensible aerodynamics all affect energy consumption.
- Battery range can be significantly improved through top-ups, battery sharing within groups and temperature-controlled storage, particularly in winter.

Worried about your e-bike battery running out: 7 tips for extending your range

- Software, apps and updates are becoming a key quality feature of modern e-MTBs, complementing motor performance and hardware.
- Current systems utilise algorithms, sensor fusion and adaptive control; true, adaptive AI is still in its infancy.
- Features such as intelligent assistance modes, over-the-air updates, anti-theft protection and app-based maintenance already offer tangible benefits in everyday use.

AI in e-MTBs: Just how intelligent are modern drive systems really?

- Instead of wattage or weight limits, objectively measurable criteria such as maximum acceleration and power-to-weight ratio should be regulated.  
- Tuning is not prevented by higher wattage limits, but by tamper detection, market surveillance, inspections and appropriate testing procedures.  
- Testing the entire vehicle is crucial for road safety: driving dynamics, braking performance, stability and the long-term durability of the system.

Response to the interview with Lutz Scheffer: “It’s not just the weight that counts – it’s the handling too”

- MGUs combine the motor, gearbox and gearshift; advantages: less maintenance, better weight distribution, smooth gear changes, but greater weight and higher costs.  
- Gobao and Avinox are presenting new MGU models at Eurobike; according to Peter Denk, Chinese manufacturers have a slight edge over their German counterparts in this respect.  
- Experts see great potential, but emphasise that MGUs must prove themselves against traditional mid-drive derailleurs in terms of efficiency, weight and practicality.

Eurobike innovation: The next big thing? Will we all soon be riding bikes with motor-gearbox units?

- Maxon AIR S: approx. 2 kg, 90 Nm, 620 W, high performance combined with very low weight, with no significant issues regarding heat or range  
- Mahle M40: 2.64 kg, up to 105 Nm and 850 W, more power than the Bosch CX and many electronic features such as traction control and hill-hold  
- Both motors offer alternatives to Bosch/Avinox, but suffer from a limited choice of bikes and are not yet available in mass-produced models

Maxon or Mahle: Which motor industry underdog has the future?

E-bike motors in check ✅ Model comparison & drive types ✅ Current test reports & recommendations ✅

Retrofitting motors for bikes: Test reports | BIKE

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Retrofitting motors for bikes: Test reports | BIKE

Bosch Performance Line CX Gen5
The most important error codes and their causes

Is your e-bike battery flat? These factors affect your e-bike’s range

Should you oil the belt drive on an e-bike? This mistake could ruin the drive system

E-bike batteries and motors in hot weather
What e-bike riders need to bear in mind in the height of summer

Bosch PowerMore 250 Range Extender Review
Greater range, but poor handling

eCVT motors under the microscope
A new era for e-bikes thanks to Gobao and Avinox?

Bosch Hub Line put to the test
Here’s what the new Bosch motor is like to ride

Worried about your e-bike battery running out
7 tips for extending your range

AI in e-MTBs
Just how intelligent are modern drive systems really?

Response to the interview with Lutz Scheffer
“It’s not just the weight that counts – it’s the handling too”

Eurobike innovation
The next big thing? Will we all soon be riding bikes with motor-gearbox units?

Maxon or Mahle
Which motor industry underdog has the future?

Retrofitting motors for bikes: Test reports | BIKE

Bosch Performance Line CX Gen5The most important error codes and their causes

Is your e-bike battery flat? These factors affect your e-bike’s range

Should you oil the belt drive on an e-bike? This mistake could ruin the drive system

E-bike batteries and motors in hot weatherWhat e-bike riders need to bear in mind in the height of summer

Bosch PowerMore 250 Range Extender ReviewGreater range, but poor handling

eCVT motors under the microscopeA new era for e-bikes thanks to Gobao and Avinox?

Bosch Hub Line put to the testHere’s what the new Bosch motor is like to ride

Worried about your e-bike battery running out7 tips for extending your range

AI in e-MTBsJust how intelligent are modern drive systems really?

Response to the interview with Lutz Scheffer“It’s not just the weight that counts – it’s the handling too”

Eurobike innovationThe next big thing? Will we all soon be riding bikes with motor-gearbox units?

Maxon or MahleWhich motor industry underdog has the future?

Bosch Performance Line CX Gen5
The most important error codes and their causes

E-bike batteries and motors in hot weather
What e-bike riders need to bear in mind in the height of summer

Bosch PowerMore 250 Range Extender Review
Greater range, but poor handling

eCVT motors under the microscope
A new era for e-bikes thanks to Gobao and Avinox?

Bosch Hub Line put to the test
Here’s what the new Bosch motor is like to ride

Worried about your e-bike battery running out
7 tips for extending your range

AI in e-MTBs
Just how intelligent are modern drive systems really?

Response to the interview with Lutz Scheffer
“It’s not just the weight that counts – it’s the handling too”

Eurobike innovation
The next big thing? Will we all soon be riding bikes with motor-gearbox units?

Maxon or Mahle
Which motor industry underdog has the future?