E-bike is upgraded again:What are the improvements of Shimano motors EP8 and E8000
How do shimano motor EP8 and E8000 perform on Road in Forest
The data on the book is completely different from riding in the actual scene. Compared with the E8000, which went out of the same school four years ago, the EP8 is still better than the actual test in the forest road. Is it possible to maintain the handling when the peak torque is increased? Is the noise of the EP8 mentioned above really unacceptable?
Lighter than the E6002 Drive Unit, the SHIMANO STEPS E8000 Drive Unit has a short rear center in order to increase clearance for suspension and large tires. It provides a stable assist power output and a direct pedaling feel whether the assist is on or off. It offers 70 Nm of torque and 250 watts output and a 24mm spindle bb.
- Compact drive unit
- Shorter chain stay possible
- More clearance (suspension/tire)
- Power output
- 70 N·m (max.), 250W
- Lighter than DU-E6002
- Improves bike handling
- Drive unit characteristics
- Direct pedaling feel in on and off assist power
- Stable Assist Power output
Four years ago, Shimano released the revolutionary high-end E-bike motor STEPS E8000. However, when major friends continue to introduce new products, the industry leader Shimano’s new EP8 is naturally unwilling to lag behind, and is better than the previous generation in all aspects. powerful.
“Before the launch of the EP8, the E8000 had reached a dominant position in the E-bike field, but it is time to be updated and it seems to be a very successful replacement.” Rider Mick said.
But the difference is that based on the EP8’s settings and its algorithm, the power output in the forest road mode is more gradual, and the linear power output ensures the maneuverability when speeding on the forest road. At the same time, the motor can still provide the maximum power output, but this also requires a greater pedaling output for the rider. This feature makes the EP8 more suitable for professional riders and more energy-efficient.
With so many parameters to be adjusted through the application, this test is a little more complicated than expected and takes longer.
Fortunately, the test team had a logistics vehicle and brought a canopy to build a temporary studio. (This logistics vehicle is enviable)
On steep slopes and road conditions with high technical requirements, the feedback caused by the difference in motor power output becomes obvious. The 15 Nm more than the E8000 means that the EP8 can provide a stronger power output during acceleration, low cadence, and even in the wrong gear. In the power-assisted mode, the old E8000 tends to prefer to move forward more than the EP8. Sudden power output may cause the front wheel and the rear wheel to slip, which greatly reduces the controllability. Regardless of whether the rider is accelerating or on a slippery road, the EP8 can always provide power linearly, making the handling more sensitive and bringing a lot of riding pleasure. Although the performance mode has real meaning for older motors on rugged forest roads, on EP8, this mode helps maintain power in extreme situations and assists the rider in getting out of trouble. In just a few seconds, the driver Felix easily rides this tricky section with the EP8. The Max using E8000 had to get out of the car.
The internal click sound of the EP8 motor is derived from the new gearbox. Although it is difficult to notice that its resistance has increased significantly when the speed exceeds 25km/h, the chain and chainrings are not loaded and unloaded during the pedaling. There is a noticeable clicking sound. In terms of noise, the old E8000 is even better. The next step is to see whether Shimano will optimize this problem in later products.
In addition to noise, EP8 is far ahead of E8000.
The new Shimano EP8 motor is superior to the predecessor E8000 in almost every aspect. It is more powerful and more sensitive. The performance mode of EP8 comes from its strong adaptability to different usage scenarios and linear power output. The only disadvantage is the noise generated when pedaling output changes.