A review of the NSD Powerball has been long over-due.
NSD Powerballs have been used for sports, fitness, injury therapy, etc. and have sold in the millions around the world. NSD Powerballs have been sold world-wide by RPM Sports for years and are finally becoming known in the United States.
What is an NSD Powerball?
It’s a non-impact, self-propelled, hand-held ball made of tough plastic (also new metal powerball) with a gyroscope inside that produces up to 40 pounds of torque and inertia for your benefit and enjoyment.
The 250Hz rotor is so precisely balanced that it can run at 15,000+ rpm (250+ revolutions per second) with no vibration. The 250Hz Pro Powerball is considered the fastest plastic NSD Powerball to date.
(Some talented ‘Powerballers’ around the world have already broken the 15,000 rpm barrier, with the World Speed Record set at an unbelievable 16,317 rpm with the 250Hz Pro Powerball)
The NSD Powerball is made up of two precision-made, tough, sturdy plastic half-shells encircled by a ‘grip-band’ of rubber. It has a tough plastic rotor inside an inner band supported by an upper and lower track.
The slightly larger metal 350Hz NSD Powerball is almost twice as heavy as the 250Hz. The combination of metal case/ metal rotor increases torque up to 4 times more than the 250Hz.
I first encountered powerballs in December 2006 while browsing for something to help my wife and me get some possible relief for our hand and wrist problems. I was curious to see if this tennis-ball sized, plastic sphere could really be everything it claimed to be.
With a lifetime, money-back, repair or replace guarantee, I placed an order…how could I lose?
I was not disappointed. These NSD Powerballs are precision made tools that are also very pleasing to the eye and are everything they promised to be.
My first NSD Powerball was a 250Hz Pro "S" (Screamer Rotor) and the name fits it very well. The rotor inside the ball has 4 pairs of 2 precision holes evenly spaced around the rotor, drilled completely through to the core.
This is what gives the Screamer it’s louder than average sound. It produces an almost ‘siren-like’ whine even at low speeds. The higher you speed it up, the louder it gets. Personally, I enjoy the sound, but some people may prefer something quieter.
I also purchased a Blue 250Hz for my wife. This powerball is much quieter in comparison to the Screamer. It still whines the same as the speed increases, but the sound is more like a distant jet-engine winding up to prepare for take-off.
We have used these Powerballs for almost 7 weeks and have been continually impressed with them. The improvements we have both made are due strictly to our daily low-speed use of the Powerballs.
Click here to read more about what the NSD Powerballs have done for us, including much more important information.
2/12/07
