M
Hi - i recently got a Trek 7.1 hybrid from a friend. it is second hand
and has had a fair life.
When i peddle hard, i get a creaking sort of noise just on the right
crank. It is most apparent on the highest (i mean largest) front cog
and smallest rear cog. It occurs in the pushing phase of peddling, not
as the right crank comes back around as i push on the left crank. I
can also hear/feel it when i am on the largest front cog but smallest
but-one rear cog. But much less so. Speed of crank rotation does not
seem to affect it.
It does not sound or feel like the peddle or crank are knocking
against anything.
I'm not sure if this has anything to do with it but, i had the bike
upturned the other day to check the gear cabling adjustments. When i
rotated (by hand) the cranks and the rear wheel got some real speed
up, it did not rotate 'true'. I mean, the rear of the bike vibrated
quite a bit (maybe just the energy in the rotation) but also it looked
like the rear gear cassette was rotating around a v slightly different
axis to the wheel itself). Not sure how worried i should be about
this!
Apologies if this is hard to decipher as i am not bike expert. I'm
just trying to work out if this is something i can fix myself,
requires a professional, and how much it might cost to rectify.
thanks.
and has had a fair life.
When i peddle hard, i get a creaking sort of noise just on the right
crank. It is most apparent on the highest (i mean largest) front cog
and smallest rear cog. It occurs in the pushing phase of peddling, not
as the right crank comes back around as i push on the left crank. I
can also hear/feel it when i am on the largest front cog but smallest
but-one rear cog. But much less so. Speed of crank rotation does not
seem to affect it.
It does not sound or feel like the peddle or crank are knocking
against anything.
I'm not sure if this has anything to do with it but, i had the bike
upturned the other day to check the gear cabling adjustments. When i
rotated (by hand) the cranks and the rear wheel got some real speed
up, it did not rotate 'true'. I mean, the rear of the bike vibrated
quite a bit (maybe just the energy in the rotation) but also it looked
like the rear gear cassette was rotating around a v slightly different
axis to the wheel itself). Not sure how worried i should be about
this!
Apologies if this is hard to decipher as i am not bike expert. I'm
just trying to work out if this is something i can fix myself,
requires a professional, and how much it might cost to rectify.
thanks.