hard to see the third color of the resistor values (looks like orange yellow brown to me) that circuit would blink at about 1.4 KHz, which would look like the LED were steady on.
I don't think it acts like a 50kg wheel since the water is not a solid. When you begin to spin the drum the water inside will not be spining, it will be more like pulling a cart with a bucket of water and light wheels. (the water will act as it's own bearing) only after the pulling the drum for a while the water will spin, but by that time you would have overcome the iniertia of the water. So I dont think its actually as inneficiant as it may look.
I don't think it acts like a 50kg wheel since the water is not a solid. When you begin to spin the drum the water inside will not be spining, it will be more like pulling a cart with a bucket of water and light wheels. (the water will act as it's own bearing) only after the pulling the drum for a while the water will spin, but by that time you would have overcome the iniertia of the water. So I dont think its actually as inneficiant as it may look.