POWERBALLS

We sell all kinds of NSD Powerballs and Accessories here at MyTrampolines, including the following: 250Hz, 250Hz Pro, Neon, Neon Pro, Signature, Techno, Metal Pro and more....



Description :

The Powerball is the perfect gadget for exercise & fun and is suitable for both male and female, young or old. The NSD Powerball generates between 1 - 40lbs of resistance torque depending on rotor speed and will tone the arms & wrists, build muscle or gently rehabilitate damaged limbs with its smooth non impact action. Inexpensive to buy, the Powerball is one of world's most popular gift ideas and will instantly satisfy four very specific requirements for you as:

The Powerball is the definitive instrument for athletes and enthusiasts of many different kinds of sports including rugby, golf, baseball and rowing. The Powerball is also a great tool for hobbies and pastimes (especially Musicians!).

The Powerball is a highly addictive and fun to use "gadget" for competitive males & females. There is a Worldwide Powerball Premier League table that you can have a go at as well. (could you secure a place on the Top 100 scoreboard??).

The Powerball is a revolutionary new fitness product to help tone the arms and shoulders for women or build substantial power and muscle in the arms, wrists, hands and shoulders for men.

The Powerball is the perfect instrument to gently rehabilitate lower forearm and wrist joints affected by carpal tunnel syndrome, RSI (repetitive strain injury), arthritis or previous breakage.

How it works

The NSD Powerball essentially consists of a spinning mass en-cased in an outer shell. The Powerball shell almost completely covers the Gyro, with only a small opening allowing the Powerball to be manually started by either a pull cord or the NSD Powerball Electric Eezi starter.

The spinning mass is fixed to a thin but strong metal axle, each end of which is trapped in a circular, equatorial groove in the outer shell of the Powerball. A lightweight ring with two notches in it for the ends of the axle rests in the groove. This ring can slip in the groove; it holds the spinning Powerball centered in the shell, preventing the two from coming into contact, but still allowing the orientation of the axle to change. Once the Powerball is spinning, tipping the device causes the Powerball to precess, with its axle slipping around in the groove in a circular fashion. The groove inside the device is a little wider than the axle; an externally applied torque causes one end of the axle to push against the upper rim of the groove, while the other end pushes against the lower rim of the groove. These two effects combine to make the Powerball Gyro work: as the Powerball precesses in response to an external torque, one end of the axle "rolls" along the top edge of the groove while the other end "rolls" along the bottom edge, speeding up the rotation of the Powerballs spinning mass which inturn can generate up to 40lbs of resistance.

The acceleration of the Powerball is best when the precession of the gyroscope is followed by wrist motion, so that an accelerating torque is continually applied. The wrist can be rotated either a clockwise or anti clockwise direction. The result is always to increase the rotation speed of the Powerball. It takes a while before one finds the "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction which occurs if the wrist is rotated too quickly.