user
23-01-2006, 19:32
I bought a "wrist roller" yesterday, because I seen and heard about Powerballs and thought they were neat. I haven't seen Powerballs in store, but I did see this cheap imitation.
At first, I thought Powerballs were motorized, and that depending on how strong your wrists were, and how stable you could keep the device, the RPM would continually increase until you wobbled too much and it wouldn't progress anymore. That was my impression before checking out the site. So, I thought this imitation with no motor (just a string) and no counter would be good enough.
Well, now that I know better. I see that this cheap version is poorly designed. I can see the rotor wobble a few milimetres just from spinning it a bit. I plan on getting a real Powerball soon.
Actually, the instructions that came with the imitation were vague, for someone who didn't at the time, know how these were suppose to work, it was frustrating. After checking up on Powerballs.com the information here helped me more than the instructions and information that came with the imitation.
Calculon
At first, I thought Powerballs were motorized, and that depending on how strong your wrists were, and how stable you could keep the device, the RPM would continually increase until you wobbled too much and it wouldn't progress anymore. That was my impression before checking out the site. So, I thought this imitation with no motor (just a string) and no counter would be good enough.
Well, now that I know better. I see that this cheap version is poorly designed. I can see the rotor wobble a few milimetres just from spinning it a bit. I plan on getting a real Powerball soon.
Actually, the instructions that came with the imitation were vague, for someone who didn't at the time, know how these were suppose to work, it was frustrating. After checking up on Powerballs.com the information here helped me more than the instructions and information that came with the imitation.
Calculon