Here are 2 chart on brushless motors. If notice they different rpm curves. They a low cost motors because of wide spread.?
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This chart is on a typical permanent magnet motors.
If noticed the wide range .?
There is no real slip in DC motors just torque to rpm .
If notice the effective drop a lot. But but motor slows down the torque goes up.?
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I am still looking for good chart on motors use machine tools like mini lathe.?
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Remember the difference between brush vs brushless?
Thd brushless uses a 3 phase motor and the controller changes the frequency?
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Dave?
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On Tue, Jul 16, 2024 at 10:06 PM, Tony Smith wrote:
It’s still not wrong.? Looks like they’re only showing the universal motor on AC but eh, that’s what it looks like.
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It’s not comparing any particular motor, it’s saying if you want high speed then pick a universal motor.? Of course brushless DC can do high speed (drones) but needs a controller.
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Tony
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The universal motor at 20,000 rpm. Torque is about best you use drill and pipe threading machine. There chart show a poor curve.?
Why show a Brush motor run at 2,500 rpm when there is Brushless is around 4,000 rpm.?
The AC motor has a range of 5 to 10% on most I see running 3,600 rpm on this has lot of variation for torque from fans to air compressors.? The rpm is only 3 600 to 3,450 type. There chart show a lot higher rang.
On Tue, Jul 16, 2024 at 03:08 PM, WAM wrote:
On 7/16/2024 2:24 PM, davesmith1800 via groups.io wrote:
*Brushless mini lathe motor torque chart* compare to DC motors.
I know the DC motors have very high torque as the motor slow down.? The standard ac squire cage motor is about same the rpm's drop off.
But do not know what torque is on the *Brushless electronic DC motors?.*
FYI
Simple to compare the DC vs AC is.
The old time heavy duty drill motors when star to slow you feel torque.
AC motor like fan you stop it a small stick.
Dave
davesmith1800