power rating

Do you mean how much power does it consume or how much does it provide? What kind of DC motor? Give some specifics, please.

actually im planning to build a clothes horse that can cover(like a rain protector) the clothes when its raining.Then i need to use a motor to move the cover(example canvas)around the reel of the clothes horse.Btw the clothes horse shaped like a tall cylinder.I dont know what type of motor to be used and how much power rating of the motor.Because the clothes horse is going to be placed outside the house, i prefer to use a solar panel as a power supply.But the problem is that i dont know how to find the right solar panel and also the motor.

Given: Diameter of the railing, D =1.3m,

Parameter of the railing, P= pi x 1.3m=4.084 m,

Diameter of the gear attached on motor, d = 0.02m,

Distance travel for 1 rev of motor = pi x 0.02m = 0.06283m

Since the canvas cover must covered the railing under 5 seconds. It means 1 second the canvas cover must travel =(4.084m/5)=0.8168m

The speed of motor needed to turn in order to closed the canvas cover under 5 seconds,

Revolution per second = 0.8168/0.06283 = 13

RPM = 13 x 60 = 780

Torque, T = Fr

=14.7 x 0.01m

=0.147 Nm

Power of the motor, P = Tw

=0.147x780x(2pi/60)

=0.147 W

if im not mistaken the formula found in the internet for hp= (5252xrpm)/T

thus by doing so, the power rating of the motor is = 16.6W.. is it correct?

and one more questions, can i use a 12V solar panel with 0.2Amp(the power rating = 2.4W) to supply the power for the motor?or do i need a larger value of power to the motor?

Don't you have AC 3 hase around?

DON'T YOU have a small 3Phase1/4> 1/2HP motor readily available?

Rig up one with reversing pair of contactors+limit switches operating with your sensor/controls.

Do not waste your time going to squeeze a WAtt here ,a Watt there--even if your actual load is miniscule.