Super fast servos

[hairykrishna]

A question for the RC gurus on here. I have a project which needs me to be able to rotate something very quickly and with reasonable precision. It doesn't have to weigh much and I think an RC servo will do the job. The quickest servos I seem to be able to find are 0.04 seconds/60 degrees. Do faster ones exist?

[mcdjl]

hairykrishna said:

A question for the RC gurus on here. I have a project which needs me to be able to rotate something very quickly and with reasonable precision. It doesn't have to weigh much and I think an RC servo will do the job. The quickest servos I seem to be able to find are 0.04 seconds/60 degrees. Do faster ones exist?

I thought maybe a sail servo but the first 2 I found seem slightly slower.... If my maths is right.

[Gary29]

0.04/60 is really quick, I've not heard of anything quicker than that in the RC world.

[Some Gump]

Can you not combine a servo with a gear to give greater rotation at lower torque?

[hairykrishna]

Thanks for looking. The winners at the moment seem to be high end helicopter tail servos.

[x5x3]

Savox do some pretty quick ones, e.g. SB2272MG - High Voltage Brushless Digital Gyro Servo .032/97.2 @ 7.4V

[The_Jackal]

Yes heli servos are the fastest but not the strongest.
You can have strong or fast, both I would imagine are really expensive.

[AER]

Use ODrive and size a brushless motor to get the speed you need

https://odriverobotics.com/

[clockworks]

Is this device just rotating to a fixed position and then back again?
If so, a solenoid, lever and return spring may be faster..

[hairykrishna]

Yes, Odrive looks interesting. I might order one to play with.

One position and back again. The other alternative, as you say, is basically a solenoid - I've been looking at voice coil actuators. I've ordered a servo which I'll try first as it's relatively cheap.