Friday, January 30, 2009

Myth Buster: More Motors Is Better in a Massage Chair

By James Knolan

There is a massage chair myth that has been permeated through time about the number of motors. This myth claims that the more motors contained in the massage chair, the better the massage chair. At the height of this myth, companies were claiming to have more and more motors in their massage chairs. The thought being that with more motors, the massage is greatly enhanced. Claims were made to have a massage chair with 6, 8 and even 18 motors. Of course, having more motors could enable more varied movements in the shiatsu massage chairs, but is this actually true?

The more motors the better the chair myth is going to be put to the myth buster test. Obviously, having more motors enables more massage options to be possible. Motors are not cheap, in fact they are expensive. Immediately, there is a quality versus quantity tradeoff. Having 18 motors versus 3 motors would make the cost of the 18 motor chair skyrocket, if they use the same quality motor. First concern is the quality level of motors in a massage chair with 18 motors.

Space is another constraint like in any product. Motors used in shiatsu massage chairs are not small motors and must be allocated space. As the number of motors increases, then more mechanisms must be installed around each motor taking up more space. Motors weigh from 2 lbs to 5 lbs each. A massage chair having 3 motors would have 6 lbs in motor weight, whereas, as a massage chair having 18 motors would have 36 lbs each or if 5 lbs each 90 lbs, just in motors. More motors equal more weight.

The real issue is does having more motors increase the quality of the massage? After all, this is the basis of the massage motor myth. Most shiatsu massage chairs, whether high end luxury models to even lower level models tend to use a 3 motor system for the back massage rollers. One motor drives the roller unit up and down the chair back. Two motors are mounted on the roller system with one motor to perform a kneading motion and the other motor to perform a tapping motion. Both motors can be run simultaneously to product a kneading/tapping massage.

If you examine the top of the line massage chairs, most use 1 motor to move the rollers up and down the chair back and 2 motors are used for the kneading and for the tapping. If the design runs each left and right roller independent, then this is done with 5 motors. The motors in this case do not provide any further massage capabilities, but will put less wear and tear on the motors, since their duties are split. Again, neat design, but no real improvement in the actual massage delivered.

There are still massage chair companies that claim to have very high numbers of motors. Certainly, they are not motors performing massage functions. These massage motors are expensive, heavy, take up space and are integral to a long, trouble-free life. Many massage chair companies jumped on this fad and perpertuated the myth. If adding motors does not add massage functions, then what is its value? In this case more is not better. More motors creates more potential problems, complicates the design and servicing. More motors also means the quality level is being sacrificed versus models with less motors. This myth is built on hype. Simple is beautiful! - 16083

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