D
Dc
Guest
I have a problem. I am just a recreational bike rider, not a mechanic. I received some great help
from this group in the past and I am hoping for some insight.
I have a low end schwinn frontier mountain bike. It is 6 1/2 years old. I have put about 6000 miles
on it.... a lot of miles in the last year. I put over 1000 miles on it since mid December. Things
are starting to go.
Recently, I have experienced a clunking sound that comes from the crank. I lived with it for a
while. But last month, I needed to get a cable replaced and an adjustment on the front shifter. It
is the thumb type that is connected to the brake assembly. It would only move into the 1st and 2nd
position on the front gear sprocket. I also told the bike shop guy about the clunk. He said that he
would try to tighten the bolt on the bracket.
When I picked up the bike, the bike shop guy was telling me that things were getting pretty worn on
the bike..the chain and the rear cassette. He said he adjusted the bolt and the shifter.
Well ,the clunk was gone but the shifter still didn't work. I brought it back to the bike guy and he
said that it needed to be replaced. He didn't have the part so I just took it back. I figured I
would ride it like that for a while.
Last week, I started to occasionally hear a scraping sound coming from the crank when I pedaled. It
has gotten gradually worse. Yesterday, it jammed up and was giving me a lot of resistance when I
pedalled. i stopped and looked at it but i didnt see anything wrong. The noise kinda stopped but I
knew not for long.
I rode again today. it was ok until about mile 4 into the ride. then it started up again. i am
pretty sure the problem is inside the pedal crankset.
well... I am thinking about this as I am riding.the clunk was gone. but maybe something was knocked
loose in the process. the noise seems like something is interferring with the rotation of the pedal
crank. and since it comes and goes( but it is mostly there now), the thing that is touching the
rotating part is moving around. this also makes sense to me because yesterday when i felt a great
deal of resistance as i was pedaling, the offending piece must of been jammed at a point that really
restricted the movement of the pedal.
it sounds like a scraping. i dont know what the .... is in there.
Is this a simple thing or what? Should I just get a new bike?
Thanks,
Deb
from this group in the past and I am hoping for some insight.
I have a low end schwinn frontier mountain bike. It is 6 1/2 years old. I have put about 6000 miles
on it.... a lot of miles in the last year. I put over 1000 miles on it since mid December. Things
are starting to go.
Recently, I have experienced a clunking sound that comes from the crank. I lived with it for a
while. But last month, I needed to get a cable replaced and an adjustment on the front shifter. It
is the thumb type that is connected to the brake assembly. It would only move into the 1st and 2nd
position on the front gear sprocket. I also told the bike shop guy about the clunk. He said that he
would try to tighten the bolt on the bracket.
When I picked up the bike, the bike shop guy was telling me that things were getting pretty worn on
the bike..the chain and the rear cassette. He said he adjusted the bolt and the shifter.
Well ,the clunk was gone but the shifter still didn't work. I brought it back to the bike guy and he
said that it needed to be replaced. He didn't have the part so I just took it back. I figured I
would ride it like that for a while.
Last week, I started to occasionally hear a scraping sound coming from the crank when I pedaled. It
has gotten gradually worse. Yesterday, it jammed up and was giving me a lot of resistance when I
pedalled. i stopped and looked at it but i didnt see anything wrong. The noise kinda stopped but I
knew not for long.
I rode again today. it was ok until about mile 4 into the ride. then it started up again. i am
pretty sure the problem is inside the pedal crankset.
well... I am thinking about this as I am riding.the clunk was gone. but maybe something was knocked
loose in the process. the noise seems like something is interferring with the rotation of the pedal
crank. and since it comes and goes( but it is mostly there now), the thing that is touching the
rotating part is moving around. this also makes sense to me because yesterday when i felt a great
deal of resistance as i was pedaling, the offending piece must of been jammed at a point that really
restricted the movement of the pedal.
it sounds like a scraping. i dont know what the .... is in there.
Is this a simple thing or what? Should I just get a new bike?
Thanks,
Deb