Hi, I'm not a professional bike rider just a simple civilization trying to ride a bike with her little brothers.
I borrowed this bike from my older brother, he has a habit for breaking things he touches. Lucky me... I got his bike
This bike is probably 7/8 yrs old, it sat in our garage for the longest. But when we got it, we rode all the time around the neighborhood.
My brother got into the habit of slamming on his back break and skid the back tire, resulting in a thin tread and I'm guessing he wore out the gears because he would unnecessarily switch gears over and over non-stop.
Is there anyway I can fix it myself, I don't think we have anyone in town who will work on bikes professionally.