Jumping chain.

Tazlvr

I have a new bike. It has ShimanoDeore gears.When I'm on smaller sprockets
the chain seems to slip a tooth. It does it randomly, not just when i'm
putting a lot of pressure on it. I can't get to the bikeshop now until after
new year. I went on to Sheldon Brown which said it's either a worn chain,
which it obviously isn't or bent deurailler, which it isn't. Any ideas as to
what it could be.
TIA
Gaz

bob watkinson

"Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
>I have a new bike. It has ShimanoDeore gears.When I'm on smaller sprockets
>the chain seems to slip a tooth. It does it randomly, not just when i'm
>putting a lot of pressure on it. I can't get to the bikeshop now until
>after new year. I went on to Sheldon Brown which said it's either a worn
>chain, which it obviously isn't or bent deurailler, which it isn't. Any
>ideas as to what it could be.
> TIA
> Gaz
Check each link Gaz. Make sure they all pivot freely. If you find a stiff
link use sideways pressure to ease it off.

Simon D

"Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
>I have a new bike. It has ShimanoDeore gears.When I'm on smaller sprockets
>the chain seems to slip a tooth. It does it randomly, not just when i'm
>putting a lot of pressure on it. I can't get to the bikeshop now until
>after new year. I went on to Sheldon Brown which said it's either a worn
>chain, which it obviously isn't or bent deurailler, which it isn't. Any
>ideas as to what it could be.
>
Other respondents' suggestions about stiff links are reasonable, especially
if it's a new bike. However, also make sure that any spacers are correctly
positioned in the cassette (you should be able to see if some sprockets are
much closer together than the others), that the teeth of the sprockets
concerned are not damaged (be careful, because Shimano HG sprockets are
oddly and irregularly shaped anyway), and even that there are no bolts
(mudguard fixing, e.g.) fouling the chain.

Simon Brooke

in message <1104511937.064534.289210@c13g2000cwb.googlegroups.com>,
CaptBike@sheldonbrown.com ('CaptBike@sheldonbrown.com') wrote:

> See: http://sheldonbrown.com/derailer-ad....html#stifflink
>

Coo!

Now that's an honour, lad, that most folk don't get.

The great Sheldon answering your question himself.

--
simon@jasmine.org.uk (Simon Brooke) http://www.jasmine.org.uk/~simon/
Windows 95:
You, you, you! You make a grown man cry...
M. Jagger/K. Richards

Eatmorepies

"Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
> I have a new bike. It has ShimanoDeore gears.When I'm on smaller sprockets
> the chain seems to slip a tooth. It does it randomly, not just when i'm
> putting a lot of pressure on it. I can't get to the bikeshop now until
after
> new year. I went on to Sheldon Brown which said it's either a worn chain,
> which it obviously isn't or bent deurailler, which it isn't. Any ideas as
to
> what it could be.

New bike = cables settling in (possibly). Tighten the cable a quarter turn
at a time at the rear mech adjusment screw. Test to see if the bike shifts
smoothly.

Else go to the basic method. Stick the bike in the second smallest rear cog
and turn the barrel adjuster until the chain just just just wants to skip up
to the next cog, then turn the barrel back one (or two) quarter turns (the
bike does need to be off the ground for this method).

John

Adrian Boliston

"Eatmorepies" <stopthere@lineone.net> wrote:

> "Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
> news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
>> I have a new bike. It has ShimanoDeore gears.When I'm on smaller
>> sprockets the chain seems to slip a tooth. It does it randomly, not
>> just when i'm putting a lot of pressure on it. I can't get to the
>> bikeshop now until after new year. I went on to Sheldon Brown which
>> said it's either a worn chain, which it obviously isn't or bent
>> deurailler, which it isn't. Any ideas as to what it could be.
>
> New bike = cables settling in (possibly). Tighten the cable a quarter
> turn at a time at the rear mech adjusment screw. Test to see if the
> bike shifts smoothly.

My new bike used to skip, mainly on the smallest 2 rear cogs, and I thought
I had a dodgy rear casette, but I finally adjusted the cable tension and
that fixed it.

Sniper8052(L96A1)

Adrian Boliston wrote:
> "Eatmorepies" <stopthere@lineone.net> wrote:
>
>
>>"Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
>>news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
>>
>>>I have a new bike. It has ShimanoDeore gears.When I'm on smaller
>>>sprockets the chain seems to slip a tooth. It does it randomly, not
>>>just when i'm putting a lot of pressure on it. I can't get to the
>>>bikeshop now until after new year. I went on to Sheldon Brown which
>>>said it's either a worn chain, which it obviously isn't or bent
>>>deurailler, which it isn't. Any ideas as to what it could be.
>>
>>New bike = cables settling in (possibly). Tighten the cable a quarter
>>turn at a time at the rear mech adjusment screw. Test to see if the
>>bike shifts smoothly.
>
>
> My new bike used to skip, mainly on the smallest 2 rear cogs, and I thought
> I had a dodgy rear casette, but I finally adjusted the cable tension and
> that fixed it.
>
>
If it's new wait until after new year and go back to the shop. Don't
mess with stuff if it's their responsibility to fix it.
Hell it's only a day or two, can't you use an old bike or just make do?
Sniper8052

Just zis Guy, you know?

On 31 Dec 2004 08:52:17 -0800, CaptBike@sheldonbrown.com wrote in
message <1104511937.064534.289210@c13g2000cwb.googlegroups.com>:

>Sheldon "Very Large Website" Brown

LOL!

Hapy new one, Sheldon.

Guy
--
"then came ye chavves, theyre cartes girded wyth candels
blue, and theyre beastes wyth straynge horn-lyke thyngs
onn theyre arses that theyre fartes be herde from myles
around." Chaucer, the Sheppey Tales

Tazlvr

Happy New Year to you all. Thanks for your advice Sheldon and everyone else.
I went straight down to my bike and sure enough, a stiff link.One of the
pins wasn't right through. I used my chain splitter and pushed it through.
Gaz
"Tazlvr" <tazlvruk@yahoo.co.uk> wrote in message
news:8hfBd.515$cz6.490@newsfe6-gui.ntli.net...
>I have a new bike. It has ShimanoDeore gears.When I'm on smaller sprockets
>the chain seems to slip a tooth. It does it randomly, not just when i'm
>putting a lot of pressure on it. I can't get to the bikeshop now until
>after new year. I went on to Sheldon Brown which said it's either a worn
>chain, which it obviously isn't or bent deurailler, which it isn't. Any
>ideas as to what it could be.
> TIA
> Gaz
>