09-02-2010, 11:11 PM
Hello cyclists!
I bought a used (2-3 yrs old) Schwinn S-25 recently. It works pretty well, I use it to go to school occasionally. I wanted to report a couple of things that I thought were weird and wanted to hear you experts' opinions.
Several times, I feel like the bike does not go as fast as it should. I know how to work hears, but irrespective of what gear combination I am in, I feel like there is a drag in the bike. I checked to see if the brake pads are brushing against the wheel rims. The pads are flush (in slight contact) with the rims, but do not weigh on them. The wheel spins freely if I raise the bike and turn the wheels. My another point of suspect was the bottom bracket. I believe that if I reverse pedal by hand, the pedaling should be pretty smooth and uninterrupted, but it is not. I can sort of feel the friction at the same point during each revolution. I would appreciate your suggestions here.
Another things is, when I am going down a slight slope, sometimes, it feels like the wheels are running faster than I can pedal. I mean, the bike does not need any propelling, but pedal feels so loose, as if there is no chain or no load attached to the pedals. Is this normal or anything wrong with the drivetrain?
I would appreciate your comments and suggestions.
Thank you
I bought a used (2-3 yrs old) Schwinn S-25 recently. It works pretty well, I use it to go to school occasionally. I wanted to report a couple of things that I thought were weird and wanted to hear you experts' opinions.
Several times, I feel like the bike does not go as fast as it should. I know how to work hears, but irrespective of what gear combination I am in, I feel like there is a drag in the bike. I checked to see if the brake pads are brushing against the wheel rims. The pads are flush (in slight contact) with the rims, but do not weigh on them. The wheel spins freely if I raise the bike and turn the wheels. My another point of suspect was the bottom bracket. I believe that if I reverse pedal by hand, the pedaling should be pretty smooth and uninterrupted, but it is not. I can sort of feel the friction at the same point during each revolution. I would appreciate your suggestions here.
Another things is, when I am going down a slight slope, sometimes, it feels like the wheels are running faster than I can pedal. I mean, the bike does not need any propelling, but pedal feels so loose, as if there is no chain or no load attached to the pedals. Is this normal or anything wrong with the drivetrain?
I would appreciate your comments and suggestions.
Thank you