Why does my chain "lock up"

"Dave Dixson" skrev i en meddelelse
om...
I am having a problem with my new Felt FS800 mountain bike (Deore
chanset) - every 10 miles or so, when changing gear with my front
derailer, when chain seems to get caught up somewhere. When it
happens, I am able to peddle maybe half a revolution forward and then
the chain locks completly.

I then have to peddle back, change gear and try again. This doesnt
always fix it right away though - sometimes I have to change gears a
couple of times.

I have heard of something called chain suck, but I thought it only
happened after the small ring had become worn - this is a brand new
bike.

If it is just a matter of adjusting the gears around I would prefer to
do it my self rather than return it, as the bike shop is quite a long
way away.

Sounds like chainsuck. Its often because of worn rings or "sucky" rings. My
XT crankset had the same problem, almost from the beginning. It helped a bit
when i changed the middle ring with a TA specialities, but it didnt solve
the problem completely.

Now i throw the XT crankset away and got myself a FSA Afterburner instead,
problem solved (almost). Its difficult to avoid completely. The problem may
happen in really muddy conditions to, muddy, dirty chain. Rough and bumpy
terrain and so on. But, it shouldnt happen as often as you are writing.

Solution: New chainrings :-( Clean rings and chain or look at Huws link :-)

Peter
DK

Huw Pritchard wrote:

I have heard of something called chain suck, but I thought it only
happened after the small ring had become worn - this is a brand new bike.


It does indeed sound like chainsuck to me. Have a look at this:

http://www.mtbbritain.co.uk/chain_suck.html

Or this: http://www.fagan.co.za/Bikes/Csuck/

Unless your chain is dirty and worn, it's likely a design problem. I'd
be tempted to return the bike and get them to replace the chainset.

BTW, you 'pedal' a bike.
/Pet grievance

--
a.m-b FAQ: http://www.t-online.de/~jharris/ambfaq.htm

a.bmx FAQ: http://www.t-online.de/~jharris/bmx_faq.htm

I got the same problem for the first time on my new bike.

Turned out to be as simple as an incrrectly lubricated chain.
As yours is a new bike i suggest the same thing as i did to try and correct
the prolbem - give the chain a proper degrease and grease

cheers
Mark

Sounds to me like you have a twisted chain from shifting under load,
happened to me a new chain is the solution IMHO.


Dave 'top posting for life'




"Dave Dixson" wrote in message
om...
I am having a problem with my new Felt FS800 mountain bike (Deore
chanset) - every 10 miles or so, when changing gear with my front
derailer, when chain seems to get caught up somewhere. When it
happens, I am able to peddle maybe half a revolution forward and then
the chain locks completly.

I then have to peddle back, change gear and try again. This doesnt
always fix it right away though - sometimes I have to change gears a
couple of times.

I have heard of something called chain suck, but I thought it only
happened after the small ring had become worn - this is a brand new
bike.

If it is just a matter of adjusting the gears around I would prefer to
do it my self rather than return it, as the bike shop is quite a long
way away.

Any help or suggestions would be appreciated.

Cheers,

Dave.

"Dave Dixson" skrev i en meddelelse
om...
Thanks for the info - sounds likne I am getting some form of 2-ring
suck, as it is always after I change gear.

I read that it can happen if you change gear under load - I do
probably change gear whilst the chain is under load (ie - I am
powering the bike), but not whilst going up hill - is this OK. It was
fine to do this on mu old MTB.

Off course its fine. But, it puts stress on the drivetrain, and if its worn,
dirty, sucky, it will make problems like chain suck. A MTB is build for that
sort of riding :-)

Peet
DK

(Dave Dixson) wrote in message . com...
I am having a problem with my new Felt FS800 mountain bike (Deore
chanset)

****mano chains suck.

JD

On 5 Aug 2003 01:26:41 -0700, (Dave
Dixson) wrote:

[snip **** that would never happen on a SS]

CAUSE IT AIN"T A SS!

If you want to stop chain suck or other multi geared hassles then the
answer is simple. Stop using multi-geared bikes. There's no magic to
it. A baby can figure this out.

Now throw that POS the fvck out. Stop posting dumb ass question like
"Why does my chain "lock up"? Open your friggin eyes, drop the hype
machines and go SS.


Simple is as simples does.

Peace,
Bill


The mind serves properly as a window glass rather
than as a reflector, that is, the mind should give
an immediate view instead of an interpretation of the world.
:-]

Huw says:

Huw "Emergency Rimmer substitute" Pritchard

Thank heavens! I thought Sorni was gonna make me do it all......

Steve

On Tue, 05 Aug 2003 20:29:24 -0400, Bill Wheeler
wrote:

On 5 Aug 2003 01:26:41 -0700, (Dave
Dixson) wrote:

[snip **** that would never happen on a SS]

CAUSE IT AIN"T A SS!

If you want to stop chain suck or other multi geared hassles then the
answer is simple. Stop using multi-geared bikes. There's no magic to
it. A baby can figure this out.

Now throw that POS the fvck out. Stop posting dumb ass question like
"Why does my chain "lock up"? Open your friggin eyes, drop the hype
machines and go SS.


Simple is as simples does.

Peace,
Bill


The mind serves properly as a window glass rather
than as a reflector, that is, the mind should give
an immediate view instead of an interpretation of the world.
:-]


I see what you mean there Bill. wanting to stir the pot a little huh?

Hey everyone, Bill the Wheeler is back, with all the SS hype and
all....

Dave (welcome back Billy boy!)

Bill - thanks for the advice, but I think I can beat even your SS for
chain-sucking resistance. Surly the BEST way to geid rid of chain
suck is to elimnate the chain altogether.

I am planning to discard my chain-sucking bike and get an off-road
penny-farthing instead. Could be a bit hairy on the downhills,
although full sus would probobably be fairly easy to implement.

Dave.