This is the problem: everything you buy at walmart is designed to maximize profit. <--period!

Dedicated bicycle companies(Trek, Specialized, Giant, Cannondale and especially the smaller ones) primarily design their bicycles to be ridden. Profit is usually an important secondary consideration. These dedicated companies exist solely on their reputation for excellent products. There is a huge difference here. This is a trend you will see in every single product you can think of to some degree. Dedicated vacuum cleaner companies(Miele, Sebo) design their vacuums to work well, be reliable and user friendly. The current corporate trend is to buy the reputation of these smaller companies when they are in trouble and attach this name to a product designed to maximize profit. Schwinn was once a great American bicycle company that built quite a reputation selling quality products. They floundered, got bought out and their name is now *****d out to big-box stores. All the "brand" names you see in Wal-Mart pretty much followed this pattern.

Just from personal experience, I've had vacuum cleaners that only last 1 year(plastic gears in the motor!!!) to coffee grinders that grind coffee but are a nightmare to clean(serious design issues) to bicycles that self-destruct in 100 miles(drop outs breaking, derailers going into the wheel, cranks going lopsided). Blenders that stop working after a month... Humidifiers that work sporadically... I was quite the sucker for a long time.

Enough is enough! I will never buy anything with moving parts from Wal-Mart. I try not to support this corporation that burned me time and time again with badly designed products. I highly suggest you do the same. Walmart bikes are designed to maximize profit. Think about it.