Popping noise from crank / bottom bracket on NEW Madone
#1
Senior Member
Thread Starter
Join Date: Jun 2009
Posts: 59
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Popping noise from crank / bottom bracket on NEW Madone
I get a "popping" noise when the bike is being pedaled. The bike is brand new. I did change the cassette from an 11-26 to an 11-28. It is not a every pedal stroke. VERY random. It appears to do it only in the small chain ring. ANY IDEAS????
Thanks
Thanks
#2
Senior Member
Join Date: Mar 2009
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
My other problem like this came with a cheap Shimano or Truvativ crankset, it having special bumps on the inside surfaces of the chainrings to facilitate smooth shifting. Those caused the chain to deflect while remaining on the same chainring. It was very inefficient and annoying. See whether the chain deflects and makes the noise while riding.
#3
Velocommuter Commando
Try a film of grease on your seat rails.
#4
Senior Member
Thread Starter
Join Date: Jun 2009
Posts: 59
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I will grease the pedals tomorrow. They are speedplays. Any idea if these have a history of doing that. They too are brand new. Film of grease on the seat rails????
#5
Time for a change.
Join Date: Jan 2004
Location: 6 miles inland from the coast of Sussex, in the South East of England
Posts: 19,913
Bikes: Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 5 Times
in
4 Posts
Are you certain it is Crank/BB area?
Saddle creaks can appear in various places on the bike- as can Bar stem creaks. So can broken tubes and damaged spokes on the wheels. All of these "Have" been the cause of mysterious Crank noises so check them out aswell.
But if you can't find the noise in 5 minutes of searching- get the bike back to the LBS. Let them spend their time in Finding it?
Saddle creaks can appear in various places on the bike- as can Bar stem creaks. So can broken tubes and damaged spokes on the wheels. All of these "Have" been the cause of mysterious Crank noises so check them out aswell.
But if you can't find the noise in 5 minutes of searching- get the bike back to the LBS. Let them spend their time in Finding it?
__________________
How long was I in the army? Five foot seven.
Spike Milligan
How long was I in the army? Five foot seven.
Spike Milligan
#6
Senior Member
Join Date: Jan 2002
Location: Orlando, FL
Posts: 2,794
Bikes: litespeed, cannondale
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Little creaks and pops and what not can drive yew crazy. I had one that went on and on. I tore apart the bottom bracket, repacked the bearings in the hubs (this was some years back) cleaned and lubed the drive train, lubed the pedals, cleaned and lightly greased the saddle rails. It only happened when a pedalled. It turned out to be a hairline crack in the weld on my rear water bottle cage. Eventually the cage started to fail and it became obvious. I replaced the cage and the mysterious noise ceased. Good luck on finding yours.
#8
Senior Member
Thread Starter
Join Date: Jun 2009
Posts: 59
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
YAHOO!! After doing a pretty strenuous ride Saturday, there was NO noise. It appears I had a faulty rear hub (splines and pauls). Thanks for ALL the advice.
Thread
Thread Starter
Forum
Replies
Last Post
llmercll
Bicycle Mechanics
4
06-27-11 08:05 PM
swipper_74
Road Cycling
28
05-02-11 03:18 PM