Lifecore Corebell 5- to 30-Pound Adjustable Dumbbells (Pair) Reviews
I received these today so my comments are my initial impressions. I will update my review as time goes by.
The weights themselves are made of metal, whereas the weight-selector and holder are made of plastic. The plastic "tray" that comes with each dumbbell is an essential part of the system. For safety, you must put the dumbbell on the tray before you can make any weight change. Put another way, the weight-selector cannot be moved unless the dumbbell is on the tray. I don't know how tough this plastic material is, but obviously it is probably not a good idea to treat them roughly, such as banging the two dumbbells against each other, or slam the dumbbell on its "tray". I think these are safe and fine for home use.
According to the instruction sheet, (1) the dumbbell can only have its weights changed when placed in the tray; (2) each dumbbell has a safety lock on each side to prevent the weight plates from dropping during use; (3) do not press the safety lock during use.
Each dumbbell has a maximum of 10 plates of 2.5 pounds each. The dumbbell bar and holder probably weigh 5 pounds, so the total maximum weight is 30 pounds per dumbbell. On the weight-selector, you can "dial in" 5, 10, 15, 20, 25, or 30 pounds setting. The selector will give you a sort of mechanical "engaged" sound when it is at one of the six weight settings. I tried several times to fool the system by attempting to select "in between" settings, such as between 30 and 25 or between 20 and 15, but the selector won't "click" or rest at any middle settings. For even balance, I think it's a good idea to keep left and right weight setting the same. For example, if you select 20 (4 plates) on the left and 15 (3 plates) on the right, you'll get 17.5 pounds, but using uneven weights may pose safety problems.
After some use, I deem these dumbbells pretty good in terms of ease of use and convenience. With traditional dumbbells, you either have to have many sets of different weights, or constantly doing time-consuming weight adjustments as you perform various exercises. The virtue of this kind of dumbbell is the time you save when changing weights.
As for durability, the company says "The Corebell adjustable dumbbell system carries the following warranties: lifetime on the weight plates and five years on the handle and other parts". Five years? That seems like a long time to guarantee plastic parts. It sounds like the company is pretty confident about its product's durability.
I will update this in a few months to let you know "in the field" results.
Edward Ho
October 9, 2009
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Consumer Alert! HORRIBLE product! - Michael Arthur - Roanoke, VA USA
The Lifecore Corebells promised to be durable (as the plates are made of metal) and to be adjustable in 2.5 lb increments. HOWEVER, both promises are false. These dumbbells are made of a brittle plastic casing that is too fragile to hold the metal plates. After approximately 10 uses, the plastic sliding mechanism used to select the weight plates began to stick and grind. Little pieces of OILY black brittle plastic began to litter the floor and before I knew it, the weight plates began falling out of the dumbbell handle.
Additionally, I am extremely disappointed in Lifecore's false advertising that these weights adjust in 2.5 pound increments. They do NOT. Instead, they adjust in 5 pound increments and the only way that you can adjust by 2.5 pound increments is to unevenly load each end of the dumbbell. For example, if you want 22.5 lbs, you will need to set one end to load no weights while the other end loads 20 pounds. Have you ever tried to perform chest presses or shoulder presses with an unevenly loaded dumbbell? It's just not safe! Get Bowflex SelectTech dumbbells instead!
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awesome weights - Karla Michelin -
I purchased these weights since my trainer recomended them to me. I use them daily with no troubles. I also adjust the weights in 2.5 lbs like they company says do. The weights adjust in 2.5 just like the bowflex. The weighst are steel not plastic. Try them you will love em!!
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