Shimano Dual SIS 7 speed (photos)

Today (yesterday) I got a mountain bike with
disfunctional gears.

On the controllers it says:

Shimano Dual SIS 7 speed

The left controller is incredible hard to rotate.
The indicator moves the right way but isn't spot on.
However if you muscle it enough the chain does move to
the right chainwheel.

The right controller is not as sluggish. The indicator
situation is as bad tho. It seems impossible to get to
gear seven both on the indicator and on the chainring.
On the indicator it is possible to reach the lowest
gears, but this doesn't seem to happen on the
chainring. But somewhere in between it is possible to
shift from one chainwheel to another.

Here is how it looks:

http://user.it.uu.se/~embe8573/pics/...controller.jpg
http://user.it.uu.se/~embe8573/pics/bike/gear.jpg

What does one do in this situation?

--
underground experts united
http://user.it.uu.se/~embe8573

On Tue, 09 Feb 2016 03:41:59 +0100, Emanuel Berg
wrote:
(...)
http://user.it.uu.se/~embe8573/pics/...controller.jpg
http://user.it.uu.se/~embe8573/pics/bike/gear.jpg
What does one do in this situation?

Ummm... perhaps you start by fixing the permissions on the files
and/or the directory on your web pile? When I try to look at the
above, I get:

Forbidden
You don't have permission to access /~embe8573/pics/bike/gear.jpg
on this server.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Emanuel Berg wrote:

:What does one do in this situation?

Disconnect the cable from the derailleurs. See if the derailleurs
move easilly through their entire range of motion, and lube the
various pivot points on them. If they do, they're probably okay.

See if the shifters move properly. Remove the inner cable, see if
that improves things. If they work without the cables, replace both
the inner and outer housings. If they don't, you'll need to clean an
lubricate them (bet there's a youtube video for your shifter or one
vary similar.) or just replace them. In the US, a pair of seven speed
MTB shifters costs between 20 and 50 bucks, depending on what you need
exactly. Most come with an inner cable, you'll need an outer one.

--
Truth is in your water heater.

On 2/8/2016 8:41 PM, Emanuel Berg wrote:
Today (yesterday) I got a mountain bike with
disfunctional gears.

On the controllers it says:

Shimano Dual SIS 7 speed

The left controller is incredible hard to rotate.
The indicator moves the right way but isn't spot on.
However if you muscle it enough the chain does move to
the right chainwheel.

The right controller is not as sluggish. The indicator
situation is as bad tho. It seems impossible to get to
gear seven both on the indicator and on the chainring.
On the indicator it is possible to reach the lowest
gears, but this doesn't seem to happen on the
chainring. But somewhere in between it is possible to
shift from one chainwheel to another.

Here is how it looks:

http://user.it.uu.se/~embe8573/pics/...controller.jpg
http://user.it.uu.se/~embe8573/pics/bike/gear.jpg

What does one do in this situation?


More likely than not you have cable issues; rust, kinks,
incorrect cable tension. Check those first, cable sets are
cheap.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

On 2/8/2016 9:41 PM, Emanuel Berg wrote:
Today (yesterday) I got a mountain bike with
disfunctional gears.

On the controllers it says:

Shimano Dual SIS 7 speed

The left controller is incredible hard to rotate.
The indicator moves the right way but isn't spot on.
However if you muscle it enough the chain does move to
the right chainwheel.

The right controller is not as sluggish. The indicator
situation is as bad tho. It seems impossible to get to
gear seven both on the indicator and on the chainring.
On the indicator it is possible to reach the lowest
gears, but this doesn't seem to happen on the
chainring. But somewhere in between it is possible to
shift from one chainwheel to another.

Here is how it looks:

http://user.it.uu.se/~embe8573/pics/...controller.jpg
http://user.it.uu.se/~embe8573/pics/bike/gear.jpg

What does one do in this situation?

I'd probably begin by removing, lubricating and possibly replacing
cables. Lube the derailleurs and check their limit screws too, of course.

If that didn't work, I'd probably open up the shifters themselves to
diagnose and lubricate. IIRC, 7 speed SIS aren't very complicated inside.


--
- Frank Krygowski

Jeff Liebermann writes:

What does one do in this situation?

Ummm... perhaps you start by fixing the permissions
on the files and/or the directory on your web pile?
When I try to look at the above, I get:

Forbidden You don't have permission to access
/~embe8573/pics/bike/gear.jpg on this server.

You must have visited the site like five seconds after
I submitted the post. Anyway now it is done.

--
underground experts united
http://user.it.uu.se/~embe8573

David Scheidt writes:

What does one do in this situation?

Disconnect the cable from the derailleurs. See if
the derailleurs move easilly through their entire
range of motion, and lube the various pivot points
on them. If they do, they're probably okay.

Do you use the same lube as for the chain?

Perhaps I should apply 5-56/WD-40 first to oust grains
in the machinery?

The bike has some rust and dirt but nothing beyond
help if the gears can be dealt with.

--
underground experts united
http://user.it.uu.se/~embe8573

On Tuesday, February 9, 2016 at 1:37:12 PM UTC-5, Emanuel Berg wrote:
Jeff Liebermann writes:

What does one do in this situation?

Ummm... perhaps you start by fixing the permissions
on the files and/or the directory on your web pile?
When I try to look at the above, I get:

Forbidden You don't have permission to access
/~embe8573/pics/bike/gear.jpg on this server.

You must have visited the site like five seconds after
I submitted the post. Anyway now it is done.

--
underground experts united
http://user.it.uu.se/~embe8573

i'm still getting:

Forbidden

You don't have permission to access /~embe8573/pics/bike/gear-controller.jpg on this server.

which makes it impossible to see what the problem you're having is.

Cheers

Sir Ridesalot writes:

i'm still getting:

Forbidden

You don't have permission to access
/~embe8573/pics/bike/gear-controller.jpg on
this server.

which makes it impossible to see what the problem
you're having is.

OK, now it should work.

--
underground experts united
http://user.it.uu.se/~embe8573

On Tue, 09 Feb 2016 19:37:08 +0100, Emanuel Berg
wrote:

Jeff Liebermann writes:

What does one do in this situation?

Ummm... perhaps you start by fixing the permissions
on the files and/or the directory on your web pile?
When I try to look at the above, I get:

Forbidden You don't have permission to access
/~embe8573/pics/bike/gear.jpg on this server.

You must have visited the site like five seconds after
I submitted the post. Anyway now it is done.

Nope. I checked it again at about 0800 PST on a different machine. I
also cleared the browser cache and DNS cache to make sure I was not
looking at a stale page or site. The pages now work, after you fixed
them for Sir Ridesalot.

Nothing new to add in the way of a solution. Methinks David Scheidt
had the best advice.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558