4pcs Coreless Motor DC 3.7V-4.2V 50000RPM 7mm x 16mm Micro Brush Motor with 4 Helicopter Propellers for Quadcopter Drone Model FPV DIY

Very small . I like that 😎.this is great for drones,high quality products from this seller.Thank you for this seller and for amazon

The fans does not even fit with the motor axle.. not able to use them in my project..!!Really disappointed.. whats the use of those fans.. I ordered this because I thought they will provide the fan which will fit..I don't know what to do now.. definitely not buying anything from you guys if you do not rectify your mistake!

Wires are so thin, so delicate Motors, my one motor wire break :-(Average Quality Product in this Price range :-(Motor RPM is good, its enough RPM to LIFT of a drone.

Motors are awesome!Just a little different then in seller's photosNot performance wise but look1. Wires are black and white2.All propellers are black in colourIMPORTANT:-THEY CAN RUN BOTH CLOCKWISE AND ANTICLOCKWISE IT JUST DEPENDS IN HOW TO WIRE THE POSITION AND NEGATIVE.

It is good for cooling some kind of things or for mini vacum. Okay so i am going to be a bit technical here to make you clear. I thought they would give 50000 or near rpm at a 1cell 3.7 to 4.2 v battery " I know that the volatage changes the speed " But these motors clearly doesn't. They can barely lift their own wight and when i connected 4 of them on a light foam they just vibrates.{I know about how to connect props when used in drones} These motors are slient and doesn't get warm at 1cell (3.7 to 4.2 per cell) lithium battery. You clearly cannot get 50000 rpm out of these, you would get something like 35000 rpm but when the props are attached it is even lesser. But I've noticed something, i connected them to a 2 cell battery (7.4v) and they were having soo much thrust and not much as a heat you would expect. At that voltage it just heats like normal mini drones motors. I guess the winding wire in these motors are a bit thin (lesser guage) so are efficient for long runs but not for rpm. And to tell you that most mini drones use 1 cell not 2 cell lithium batteries in them. So these are just not usefull for a mini proppler drones. I think they can be used with geared type drone if you have a teeth for the motor. Watever.. After seeing the reviews before i bought them my expectations were soo high. But its not what happened apparently. I want to tell you that a good quality coreless motors are not cheap. Because the manufacturing process takes a bit long than expected. And because of the complicated winding and thin brushes and good quality magnets. For a non geared drone you would need a 60k rpm motor which is not available at amazon. You could get them in robu in ..These are some things i shared about my experience about these tiny motors

I have to use it to make drone but it is broken. So send me another moter and i will give you this broken one.

This product is useful for another like I use these motors for cooling the big inverter at home. Thanks for selling the products in 2019.

One motor is not working