I have a 90's Specialized Sirrus with the gears on the tube under the handlebars. I was told at the local bike shop that everything is in perfect order and working confdition. My question is, I have no idea how to operate them. There is a left lever and a right lever. When do I change them? How do I change them? I've tried changing the gears hwile riding, and the pedals skip and the chain makes a terrible noise.
Also, when walking alongside the bike, if I lift the front wheel of the ground and hold the bike by the handlebars, the back wheel will not spin. When I set the front of the bike down, the back wheel will spin again. I checked the brake and it is not in contact with the wheel.
I do not know if this is because I am completely new to cycling and have only ridden the bike once. I do know that the LBS checked everything on the bike and said he has never seen such a classic bike with almost no ware and in need of nothing..
Also, when walking alongside the bike, if I lift the front wheel of the ground and hold the bike by the handlebars, the back wheel will not spin. When I set the front of the bike down, the back wheel will spin again. I checked the brake and it is not in contact with the wheel.
I do not know if this is because I am completely new to cycling and have only ridden the bike once. I do know that the LBS checked everything on the bike and said he has never seen such a classic bike with almost no ware and in need of nothing..