Ok.. In this post I want to discuss how a bike is built properly. I’m going to keep it as simple as I can so it can be a short post, hoping to not further bore you with my ranting.
Here’s a classic move, components installed half-ass and adjusted to work in a half-ass position. In this picture you see that the derailleur bolt is only a couple threads installed into the derailleur hanger, or where it mounts to the frame of the bicycle. I wish I had pictures now to show what the results of this kind of installation looked like. Anyhow, poor shifting is the least of your concerns. Once the derailleur becomes detached it can dangle from the chain and end up in the spokes of your spinning wheel, bringing the wheel to an immediate stop.
If you’re not ready for the rear wheel to abruptly stop spinning then you’ll have to compensate for the bikes abrupt deceleration by flying over the bars in one of many different crash scenarios.
Check all your bolts. All the time.
In this next example, we have a new bike from Walmart discount stores. On top of it being new it is a full suspension bike. This typically means that the rear assembly of the frame is bolted together housed in bearings and shims. If even one of these bolts isn’t properly fastened and seated to torque the bike could spontaneously self-destruct:
Proper assembly of bikes is critical to your safety. Don’t underestimate the value of a well built bike and a well assembled bike. If you’re going to get a department store bike then at least pay a local bike shop to snoop through it and make it safer to ride. Note: “safer” not “safe”.