@@JoeRobinsonTraining If a motor has higher current that means more torque but less spin which means less voltage and if it has a higher voltage but less current that means less torque but higher spin, thus we use greater current for Impact drivers and greater voltage for drills....
hey Joe can you please upload the video when u load the motor and explain it . i dont understand why we need dynomometer for it . wouldt it be simpler just measure stall torque of the motor and that is the max torque its can produce without movement ?
How about showing the difference in torque between a Rimac Nevera and a Nissan Leaf. Is it the size of the components in the electric motors that gives this huge difference in torque?
I need an answer to the following question for selecting a motor for a particular project. Can you please help me? Suppose I have a car with 1 wheel driven by a single motor. Total weight is 50KG (W). Maximum speed needed is 0.5meter per second (S). Wheel dia is 4.5cm (D). Gear ratio is 100 from motor to wheel (GR). Motor RPM is variable but assume 3000 rpm (R). What is the torque needed for the motor? T =? in N.meter. Both a value and in terms of T(W,S,D,GR,R)
What I'm trying to understand is how are these formulas universally correct i.e. what if you express values in inches instead of centimeters and instead of grams and kilograms, pounds or ounces or whatever unit they may be using on other planets?
the formulas work in mertic units, if you have inches you must first convert it to metres before calculating the force or if you have pounds you must first convert that value to kilograms to calculate the correct value, these formulas dont just work with any random values because torque is represented in Newton-metres not Newton-inches for example
@@ethanhunt3933 so, that was the missing info. hypothetical aliens on other worlds may be using different formulas altogether. lecturers always fail to explain that.
Can not believe that torque number is so low , I bought a chinese hub motor wheel for an ebike and they claim 71 Nm. How can that be possible ? Its a Dc 1500W at 48V.
When I went to school, our answers were marked wrong when we did not include Units of Measure. Suggest what you include Units of Measure so that students can readily see that they are multiplying and dividing appropriately. Please clarify how a dynamometer torque arm pressing on a scale provides mass and not force. Thanks.
I was taught the opposite! Putting letters into an equation after the number turns it into a constant multiplying a variable. 2kg becomes 2 x k x g. See the link below for the mass to force relationship and calculation: th-cam.com/video/7NQTVm-2WKA/w-d-xo.html
Example. 3 ft x 3 lbf = 9 ft-lbf. In more complex equations, I would sometimes get mixed up on which item should be in the numerator and which is in the denominator. It becomes obvious when the units cancel out and the answer has the correct units of measure. Ft is one entity, not two. Ft = feet, not Fuuf, Teee and not F x T.
Hello,Sir, I want to know that how much torque 2000 watt 1000 rpm electric hub motor can produce? And also calculation procedures want to know.Can you help me for same kind of problem?
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Watching these videos as much for the master class in teaching as the excellent content itself.
Ah, thanks, that's a kind thing to say.
@@JoeRobinsonTraining AZA
@@JoeRobinsonTraining If a motor has higher current that means more torque but less spin which means less voltage and if it has a higher voltage but less current that means less torque but higher spin, thus we use greater current for Impact drivers and greater voltage for drills....
This is a great help.
Thanks from South Africa 🇿🇦
You're welcome! 👍
Great.
I like watching your videos , because it enhances my background of electrical information.
Good to know, thanks for commenting. Keep watching!
Another fantastic video JR 👍
Thanks Mr GSH!
Random find on TH-cam very cool looking your others now :)
Really grateful.Have been searching for two days.
Hope it helped.
Very useful, excellent video. Thank you
Thank you for commenting!
Most underrated Channel 😐
Ah, thanks so much.
Brilliant, you sir are amazing. Thanks a million
Not at all, it's my pleasure.
so clear
hey Joe can you please upload the video when u load the motor and explain it . i dont understand why we need dynomometer for it . wouldt it be simpler just measure stall torque of the motor and that is the max torque its can produce without movement ?
yes...you are right bro..this is wrong calculation..
Is d = 4 cm the distance from the center of the axis motor to the force the bolt is exerting on the scale ?
2 years later: yes, yes it is.
How about showing the difference in torque between a Rimac Nevera and a Nissan Leaf. Is it the size of the components in the electric motors that gives this huge difference in torque?
Hi Joe, great video. How did you figure out the distance?
Hi Richard. It's just set value in the motor documentation.
Joe Robinson Training Thank you Joe 👍
@@JoeRobinsonTraining but what is the distance? is it the distance from the axis center of rotation to the tangent, or to the scale?
Top das galáxias.
Cheers!
it would be helpful to show the unit cancellation - especially for the conversion of grams back to N.
Great point thanks. 👍
Hi Joe
What about measuring the torque of drive motor of a bioreactor?
please explain the wire connection
what voltage
Please explain how to calculate "d" if not mention in the manual
I need an answer to the following question for selecting a motor for a particular project.
Can you please help me?
Suppose I have a car with 1 wheel driven by a single motor. Total weight is 50KG (W). Maximum speed needed is 0.5meter per second (S). Wheel dia is 4.5cm (D). Gear ratio is 100 from motor to wheel (GR). Motor RPM is variable but assume 3000 rpm (R). What is the torque needed for the motor? T =? in N.meter.
Both a value and in terms of T(W,S,D,GR,R)
Which model of motor is used
It's a permanent magnet DC motor made by Matrix TLS. Click the link to check out their electrical machines kit. www.matrixtsl.com/electrical-machines/
What does it mean to write 10kg/cm on a DC motor?Will it be measured from the center of the shaft or above it
Please explain 0.04m for distance how did you arrive at this figure
After watching that long ads, another long ads just start
Hm, is that at the very start of the vid? Bit of a necessary evil I'm afraid, I don't get any revenue any other way on TH-cam.
Just learned that you can say nought instead of zero. I can't bear it 😂
Its note 😂😂😂😂
What I'm trying to understand is how are these formulas universally correct i.e. what if you express values in inches instead of centimeters and instead of grams and kilograms, pounds or ounces or whatever unit they may be using on other planets?
the formulas work in mertic units, if you have inches you must first convert it to metres before calculating the force or if you have pounds you must first convert that value to kilograms to calculate the correct value, these formulas dont just work with any random values because torque is represented in Newton-metres not Newton-inches for example
@@ethanhunt3933 so, that was the missing info. hypothetical aliens on other worlds may be using different formulas altogether. lecturers always fail to explain that.
Can not believe that torque number is so low , I bought a chinese hub motor wheel for an ebike and they claim 71 Nm.
How can that be possible ? Its a Dc 1500W at 48V.
hub motors have planetary gears buitin that increase torque
When I went to school, our answers were marked wrong when we did not include Units of Measure. Suggest what you include Units of Measure so that students can readily see that they are multiplying and dividing appropriately.
Please clarify how a dynamometer torque arm pressing on a scale provides mass and not force.
Thanks.
I was taught the opposite! Putting letters into an equation after the number turns it into a constant multiplying a variable. 2kg becomes 2 x k x g.
See the link below for the mass to force relationship and calculation:
th-cam.com/video/7NQTVm-2WKA/w-d-xo.html
Example. 3 ft x 3 lbf = 9 ft-lbf. In more complex equations, I would sometimes get mixed up on which item should be in the numerator and which is in the denominator. It becomes obvious when the units cancel out and the answer has the correct units of measure.
Ft is one entity, not two. Ft = feet, not Fuuf, Teee and not F x T.
If 2kg represents 2 x k x g, then 10 x 1 is 1 x 0 x 1 or 0. 🙁
🤷♂️ You do you. 👍
10^-3 what value
just screw the countering screws to the scale surface and zero the scale out
Hello,Sir,
I want to know that how much torque 2000 watt 1000 rpm electric hub motor can produce?
And also calculation procedures want to know.Can you help me for same kind of problem?
Don't you really mean how to measure torque? Measuring may require some calculation
.
This is METRIC and does not apply to my work.