Hello, do you know where the performance curve of the mxus xf08 hub motor is available? I want to check the output/rotation speed curve and torque/speed curve, but I can not find it anywhere. Thank you.
Hello, do you know where the performance curve of the mxus xf08 hub motor is available? I want to check the output/rotation speed curve and torque/speed curve, but I can not find it anywhere. Thank you.
There is no meaning such as performance curve. In a practical sense, what do you want to know specifically?
The motor has two official specifications from mxus, and confusion can be seen in the specifications of xf07 and xf08. I own gdr15 (xf15) which is a more powerful motor (65Nm).
Another forum has shown that trying to understand Chinese specifications and graphs literally is a factor in early dementia.
The XF08C you can buy for £69 on PSWPower is pretty fast. When adjusting the setting of the 22A KT controller, it reached 30 miles per hour at 48V. It is currently set to 15 miles, but I feel that it is not working efficiently. Previous Q128C were much better. Even so, it reached 27 mph (approx. 43 km/h), but because of the high internal gear ratio, operation in the low speed range was much better. At 48V time, both motors operate more efficiently with 20 "wheels.
Of course, both motors will improve efficiency if they operate 36V at the 15mph limit, but in that case the torque will decrease by 30%. There is also a hand to supplement with a large capacity controller such as a 28A, but since the size is greatly increased, it is necessary to devise the installation method and place.
Torque varies by speed. Judging from the content of the post, the OP seems to understand this point well, and that is why it asked for the chart.
To those who are not familiar with the secrets of the motor plot: The above figure concerns XF08 36V 350W. Details are listed in the right sidebar. Maximum torque point Tmax is located in the 21.5RPM. At 26 "wheels, this is equivalent to 2.6 km/h. Torque at this speed is 45.24 Nm, output is 102W. The torque is good, but the speed is just before the stall, and it doesn’t make much sense to use the motor in this state.
Please check Pmax points when evaluating your climbing ability. For this motor, the torque is 18.73 Nm at 198rpm (23.7 km/h) and the output is . The practical range is between Tmax and Pmax. It is ideal for gentle slopes of 9% to 10%, but it is not suitable for steep slopes. Steeper slopes require greater output. Use the ebikes.ca motor simulator (see Peter Bridge’s post above) to calculate the required Pmax and find a motor that can supply its output at the desired speed.
How did you measure 75 km/h? Unless it is operating at a very high voltage, the motor should not actually be producing that speed. The motor is listed as 270rpm, but seems a little lower than I imagined. For 36V 26 "wheels, it is calculated to 32 km/h. Mine felt a little faster than that. So I guess it is a speed close to 280rpm at 36V.
When using a 270rpm motor as a mid-drive, the maximum output is about 240-250rpm in 36V, and about 320rpm in 48V. You can calculate the gear ratio from this value.
Both charts have a maximum rotation of 300, not 270. The winding may be different from that of PSWP. If you have time, you may test later to see the actual maximum rotation of my motor.
Normally, the number of magnets and wheel size of the speed sensor must be set to obtain the correct speed. Which LCD is it?
Speaking of which: If you want to use a hub motor as a crank motor, you have to use a current control controller instead of speed control. In other words, unless you buy something very expensive and unnecessary programmable, it is almost limited to KT controllers.
The lathe adopts backgear assembly for low speed range, which realizes high torque: D This is simply because you know nothing about the electric bicycle controller…
The lathe is not dangerous even at low speed rotation, but can not do the same with electric bicycle motor. Low speed driving is dangerous.
The safe minimum speed is about 6 mph (9 to 10 km/h). In fact, 8 mph (12 km/h) is recommended as the minimum speed when climbing. Then you can use the ebikes.ca tool to examine the output needed to overcome the maximum gradient you want to climb at that speed. That will be your required output. The gear ratio is helpful, but if the motor cannot provide sufficient output, it is necessary to get off the bicycle and walk on the slope.
The speed of motor spin differs between the number of coils and the directly related kV. Since kV is the number of RPM to rotate in 1V, it rotates between 48 v (13S) and 30% faster than the 36v (10S) per bolt. The listing ranges from £36v to 270 rpm and the kV is 7.5 but the chart is 8.33 with a maximum speed of 36v to 300 rpm.
Cars create maximum power efficiency at about 75% to 80% of the maximum speed. For crank drives, ideal rates would be slightly higher than natural pedals. Most people have a natural, comfortable pedal rate of 60 to 100 rpm. You’re your ‘what’.
First, you must measure up to RPM and battery voltage to find out what kV in paticular motor. You can determine which voltage to use. You can calculate speed for maximum output and efficiency. The crank speed can be matched correctly by calculating gearing between the
Crank motors cannot be embedded because the bike drives the crank. You have to get down the wheels.
If you want a serious climbing torque from hub motors, The trique works really well because it takes the final drive from fixed sproket. A simple chain drives a bike into a ride axle sprocket. Final drive should use final drive in jack shaft with left-frontwheel on wrong side
Regular crank motors like TSDZ8 think hub motors are better because they want to be configured.