Bicycle Mechanics - Help me isolate mysterious road buzz!

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.




mooncake
01-20-06, 09:09 PM
I have a new carbon '05 Scott CR1 Pro that I bought on close-out and it's a super bike so far but there is some weird buzz that I hear occasionally emanating from the front of the bike.

I retightened the brifter clamps, checked for loose spokes, and even put a mini shim against the valve stem to keep it from moving and I still a little buzz from somewhere. I bounced the front end off the ground and I'm sure the headset is tight.

It's almost like a tuning fork "frequency vibration"- It's not there all of the time but it's a annoying all of the same. Help? :(


mooncake
01-20-06, 11:29 PM
I have a new carbon '05 Scott CR1 Pro that I bought on close-out and it's a super bike so far but there is some weird buzz that I hear occasionally emanating from the front of the bike.

I retightened the brifter clamps, checked for loose spokes, and even put a mini shim against the valve stem to keep it from moving and I still a little buzz from somewhere. I bounced the front end off the ground and I'm sure the headset is tight.

It's almost like a tuning fork "frequency vibration"- It's not there all of the time but it's a annoying all of the same. Help? :(

Found the culprit: The Shimano c ables were rattling against each other, a problem I didn' have with Campy since their cables come straight back out of the brifter housing whereas ****manos come out in the inside. :rolleyes:
Solution: Foam adhesive strips wrapped around where the cables touch each other.
Good night!

RockyMtnMerlin
01-21-06, 07:51 AM
Found the culprit: The Shimano c ables were rattling against each other, a problem I didn' have with Campy since their cables come straight back out of the brifter housing whereas ****manos come out in the inside. :rolleyes:
Solution: Foam adhesive strips wrapped around where the cables touch each other.
Good night!
Glad you found it. Those buzzes can drive you crazy.


Retro Grouch
01-21-06, 09:59 AM
Glad you found it. Those buzzes can drive you crazy.

Amen, brother. I once had a rattle that sounded to me like my chain was trying to change gears in the back. I must have messed with the cable tension 4 or 5 times before I figured out that the noise was my car keys rattling in a pocket.

mcoine
01-21-06, 10:06 AM
Can you guys help me isolate about 7 buzzes and rattles in my '90 volvo?

Davinci
01-21-06, 11:06 AM
Can you guys help me isolate about 7 buzzes and rattles in my '90 volvo?

LOL, yeah, but it's gonna involve a blowtorch and a BFH ;)

mooncake
01-21-06, 11:40 AM
Amen, brother. I once had a rattle that sounded to me like my chain was trying to change gears in the back. I must have messed with the cable tension 4 or 5 times before I figured out that the noise was my car keys rattling in a pocket.


I figured out that the noise was my car keys rattling in a pocket.

rotflmfao :D :D :D :D

Squint
01-21-06, 04:35 PM
I thought my chain needed lube but it was birds chirping.

Later that year, I was riding indoors and thought my chain was squeaking but it turned out to be my pet bird chirping.