Derailluer Spring

Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something that
I'm doing or can do to prevent this from happening?

Thanks,
Charles

remove links from the chain


"Charles B. Summers" wrote in message
...
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something that
I'm doing or can do to prevent this from happening?

Thanks,
Charles




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"Charles B. Summers" wrote in message
...
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something that
I'm doing or can do to prevent this from happening?

Thanks,
Charles

Shimano stuff is not servicable, no parts are sold. Throw it away and get a
new one.

- CA-G

Can-Am Girls Kick Ass!

..
"Charles B. Summers" wrote in message
...
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something that
I'm doing or can do to prevent this from happening?

Thanks,
Charles


http://www.sheldonbrown.com/derailer-adjustment.html
--
DTW .../\.../\.../\...

I've spent most of my money on mountain biking and windsurfing.
The rest, I've just wasted

This bike is only a month old. Have any recommendations?


"Carla A-G" wrote in message
...

"Charles B. Summers" wrote in message
...
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something
that
I'm doing or can do to prevent this from happening?

Thanks,
Charles

Shimano stuff is not servicable, no parts are sold. Throw it away and get
a
new one.

- CA-G

Can-Am Girls Kick Ass!

Thanks! This is very helpful. Looks like Jeff was on the right track!


"D T W .../\..." wrote in message
news:xXTHe.16085$QX2.15915@trndny01...
.
"Charles B. Summers" wrote in message
...
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something
that I'm doing or can do to prevent this from happening?

Thanks,
Charles


http://www.sheldonbrown.com/derailer-adjustment.html
--
DTW .../\.../\.../\...

I've spent most of my money on mountain biking and windsurfing.
The rest, I've just wasted

Carla A-G wrote:

Shimano stuff is not servicable, no parts are sold. Throw it away and get a
new one.

- CA-G

Can-Am Girls Kick Ass!

Umm, it could be brand new? I have a brand new XT that bounces like a
bitch all over the place unless i remove enough links to restrict my
gearing.

J

Carla A-G wrote:

Shimano stuff is not servicable, no parts are sold. Throw it away and get a
new one.

- CA-G

Can-Am Girls Kick Ass!

Umm, it could be brand new? I have a brand new XT that bounces like a
bitch all over the place unless i remove enough links to restrict my
gearing.

J

Charles B. Summers wrote:
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or
rocks, the chain gets real sloppy and if I'm pedaling... the chain
can slip, usually causing me to slow down or come to a stop. Is there
something that I'm doing or can do to prevent this from happening?

Thanks,
Charles

You can tighten the cage pivot spring on some Shimano derailleurs. It
requires taking the cage apart so that just the side plate attached to the
nuckle remains. Then unscrew the small post that stops the cage and allow
the spring to relax. Remove the pivot bolt and carefully remove the side
plate. You'll see that there is another hole position for the spring. Move
the spring to that position and reassemble. Rotate the side plate to put
tension on the spring and replace the stop post (put some blue loctite on
its threads).

Your in luck...

Barnett's Manual Chapter 32 - Rear Derailleurs.

http://www.bbinstitute.com/BM5%20chap%2032.pdf

Go to page 23. "Disassembling the cage pivot."

Mike

Charles B. Summers Wrote:
Anyone know of a way to tighten the spring in the rear derailluer of a
Shimano? The reason I'm asking is that when I bounce over trees or
rocks,
the chain gets real sloppy and if I'm pedaling... the chain can slip,
usually causing me to slow down or come to a stop. Is there something
that
I'm doing or can do to prevent this from happening?

Depends on what the problem is and how stubborn you are. If it's a new
bike from a shop, take it back and tell them your problem. Otherwise
wrong chain length seems like one probable cause. If that is OK you
might think about how the bike has been used. It's not unheard of to
have rust/dust penetrate into the pivot, causing it to jam.
Dissasembly, clean and reassembly tends to fix that. Do note that the
spring is under some tension which can make reassembly a bit of a
challenge.
Not having the wheel all the way back can also cause troubles with the
RD.

In extrreme cases it might be needed to tighten the spring by drilling
a new retainer hole.


--
dabac