MTB shifting problems

"Marky" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Hi everyone, I need some help with my 2003 Giant Yukon
MTB. A couple

of

Quoted message said:

gears make noise while riding and this is after the second
time I have brought the bike back to get them correctly
adjusted.

The problem occurs in the following situations: Largest
chainwheel on front, smallest cog on rear (top gear)
Largest chainwheel on front, largest cog on rear Largest
chainwheel on front, second largest cog on rear

Can anybody here post a clear guide to fixing my problem,
I don't want

to go

Quoted message said:

to the dealer again for this. I do have the owners manual
but am still unsure of exactly what I should/shouldn't
touch with regards to the specific problems I have.

All

Quoted message said:

gears shift fine (ie they do go into gear) its just the
noise factor

that's

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very annoying.

It's probably the chain rubbing the front derr. cage. Be
careful adjusting this - you can throw the chain off by
overshifting. I think it's caused by poorly adjusted
deraileurs and flexing of the bike's frame when pushing
hard.. See here: sheldonbrown.comderailerOpen ↗
adjustment.html

Oh, you probably should try and avoid the extreme chain
angles caused when you are in "big" - "big" or "small" -
"small"...

hth hippy

Hi Marky:

Have a read, just for your reference. This is from Deore, but the method is more or less the same among all models. Be aware that both are .pdf manuals.

It's better to check the angle of front derailleur, its upper and lower limit settings as well as making sure that the cage is in the perfect shape.

The front derail. on my brand new MTB had a rubbing problem that could not be fixed through all adjustment tricks. It turned out that the front bit of the cage's outer edge was slightly bent inside. A grip and a little muscle work made it perfect. 🙂

Cheers,
Amir.

http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/2004_mountain_sd.MainContentPar.0024.Schematic.0001.File.tmp/fc_m510_si.pdf

http://www.shimano.com.au/publish/content/australia/en/cycling/customer_support/service_diagrams/2004_mountain_sd.MainContentPar.0024.Schematic.0002.File.tmp/rd_m510_si.pdf

Quoted post said:

Originally posted by Marky
Hi everyone, I need some help with my 2003 Giant Yukon MTB.
A couple of gears make noise while riding and this is after
the second time I have brought the bike back to get them
correctly adjusted.

The problem occurs in the following situations: Largest
chainwheel on front, smallest cog on rear (top gear) Largest
chainwheel on front, largest cog on rear Largest chainwheel
on front, second largest cog on rear

Can anybody here post a clear guide to fixing my problem, I
don't want to go to the dealer again for this. I do have the
owners manual but am still unsure of exactly what I
should/shouldn't touch with regards to the specific problems
I have. All gears shift fine (ie they do go into gear) its
just the noise factor that's very annoying.

Thank You.

Marky said:

... A couple of gears make noise while riding and this is
after the second time I have brought the bike back to get
them correctly adjusted. ... Largest chainwheel on front,
largest cog on rear

You shouldn't really use this combination if you can help
it, In big-big the chain is at it's most 'diagonal'. Knock
it down to the middle ring first.

There's probably a barrel adjuster up where the cable
housing enters the shifter pod. While riding along, you
can give this a _slight_ turn and trim the derailleur
position. Start off with a quarter turn or suchlike. If
you wind it too far, you might find you have trouble
changing back into the small ring. (in which case just
trim it back the other way).

You haven't given the front derailleur a knock or
something ?

-kt

"kingsley" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Marky said:

... A couple of gears make noise while riding and this
is after the second time I have brought the bike back to
get them correctly adjusted. ... Largest chainwheel on
front, largest cog on rear

You shouldn't really use this combination if you can help
it, In big-big the chain is at it's most 'diagonal'. Knock
it down to the middle ring first.

Yep, I'll refrain from using the extreme combinations

Quoted message said:

There's probably a barrel adjuster up where the cable
housing enters the shifter pod. While riding along, you
can give this a _slight_ turn and trim the derailleur
position. Start off with a quarter turn or suchlike. If
you wind it too far, you might find you have trouble
changing back into the small ring. (in which case just
trim it back the other way).

You haven't given the front derailleur a knock or
something ?

No knocks at all, anyway I'm taking it to my dealer tonight,
annoying sound in top gear needs to be fixed before Sundays
bike ride.

Thanks everyone

Quoted message said:

-kt