how to joint inner gear cable (wire)

Today, I did this by first removing the damaged part
with a pair of nippers, and then squeezing the wires
together first with my fingers and then a pair of
pliers - both ends, into tight hooks that looked like
very sharp letters "v". Once put together, around and
around, I rotated some thin steel (?) string that
I found. The loops didn't get on top of each other but
were packed closely, back-to-back, for ~0.75 cm on
each side of the point where the wires hooked. Last,
I put vulcanizing tape around everything to keep water
(ice) from getting in.

What do you think of this method?

What do yo do?

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

On 28/07/15 10:38, Emanuel Berg wrote:
Today, I did this by first removing the damaged part
with a pair of nippers, and then squeezing the wires
together first with my fingers and then a pair of
pliers - both ends, into tight hooks that looked like
very sharp letters "v". Once put together, around and
around, I rotated some thin steel (?) string that
I found. The loops didn't get on top of each other but
were packed closely, back-to-back, for ~0.75 cm on
each side of the point where the wires hooked. Last,
I put vulcanizing tape around everything to keep water
(ice) from getting in.

What do you think of this method?

What do yo do?


Replace the gear cable.

--
JS

Emanuel Berg wrote:
:Today, I did this by first removing the damaged part
:with a pair of nippers, and then squeezing the wires
:together first with my fingers and then a pair of
liers - both ends, into tight hooks that looked like
:very sharp letters "v". Once put together, around and
:around, I rotated some thin steel (?) string that
:I found. The loops didn't get on top of each other but
:were packed closely, back-to-back, for ~0.75 cm on
:each side of the point where the wires hooked. Last,
:I put vulcanizing tape around everything to keep water
ice) from getting in.

:What do you think of this method?

Handy to get to a bike store where you can buy a new cable.

:What do yo do?

Buy a new cable, well before they break.

--
sig 97

On 7/27/2015 8:38 PM, Emanuel Berg wrote:
Today, I did this by first removing the damaged part
with a pair of nippers, and then squeezing the wires
together first with my fingers and then a pair of
pliers - both ends, into tight hooks that looked like
very sharp letters "v". Once put together, around and
around, I rotated some thin steel (?) string that
I found. The loops didn't get on top of each other but
were packed closely, back-to-back, for ~0.75 cm on
each side of the point where the wires hooked. Last,
I put vulcanizing tape around everything to keep water
(ice) from getting in.

What do you think of this method?

What do yo do?

Replace the cable.

The only time I've tried joining cables was when a cable broke far from
home, and the replacement cable I carried was too short. Since then, my
touring bike always has a spare extra-long cable in its saddle bag.


--
- Frank Krygowski

On Tue, 28 Jul 2015 02:38:59 +0200, Emanuel Berg
wrote:

Today, I did this by first removing the damaged part
with a pair of nippers, and then squeezing the wires
together first with my fingers and then a pair of
pliers - both ends, into tight hooks that looked like
very sharp letters "v". Once put together, around and
around, I rotated some thin steel (?) string that
I found. The loops didn't get on top of each other but
were packed closely, back-to-back, for ~0.75 cm on
each side of the point where the wires hooked. Last,
I put vulcanizing tape around everything to keep water
(ice) from getting in.

What do you think of this method?

What do yo do?

I replace the cable :-)
--
cheers,

John B.

https://goo.gl/UJkMNR
https://www.google.com/search?site=i.... VNDX9D5Fb38
http://www.bing.com/search?q=Splicin...Wire&FORM=R5FD
Splicing Small Gauge Wire
https://www.google.com/search?q=spli...2ynADC&dpr=1.3
what you're pursuing is Mechanics 101. The work is good for your brain and hands.
Mechanically joining two lines is organic rope, fencing, or larger diameter stranded metal wire or cable eg bulldozer heavy equipment good to know for towing tho the fabric belt is better for light vehicles.
https://www.google.com/search?q=what...amanship+knots
What you have will unravel.
Why is this ? figure where the force goes as wires pull.

Soldering is impossible. Stranding holds grease upstream of flux/solder then heat draws grease down into the soldering area leaving a cold joint.
Larger diameter cable splicing is done with multiple u-bolts along the splice with each u-bolt adding x friction until the total pull force is held with the additive u bolt friction

Phil W Lee wrote:

:If I was forced to extend a cable (maybe as a distress technique on a
:tandem), I'd do something similar to what you did, but with the
:addition of solder. I'm not sure what the purpose of keeping water
ut is - any decent gear cable is stainless.

Lots of galvanized cables about. they're a lot cheaper. Doesn't
matter to most of us, because the absolute difference is small, but to
the manufacturer, it saves a few bucks a bike.

--
sig 56

Phil W Lee writes:

Replace it. If it's damaged in the middle ...

No, it was damaged (frilly) at the end, but when I cut
away that part, the cable wasn't long enough.
So I used parts of another cable to prolong it.

If I was forced to extend a cable (maybe as
a distress technique on a tandem), I'd do something
similar to what you did, but with the addition of
solder. I'm not sure what the purpose of keeping
water out is - any decent gear cable is stainless.

OK - how can you detect this? There are two cables
involved, and the string. But stain isn't the main
reason to do it but rather, if water gets in,
and especially if it turns into ice, it may break
the repair.

Here in Uppsala (at 59.9°N 17.6°E) water/ice is
a problem (probably where some of you guys live as
well). For example the outer cables are very keen on
cracking. Vulc tape is often used there as well to
prevent water from getting in, by sealing
those cracks.

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

On Tuesday, July 28, 2015 at 5:08:26 PM UTC-4, Emanuel Berg wrote:
Phil W Lee writes:

Replace it. If it's damaged in the middle ...

No, it was damaged (frilly) at the end, but when I cut
away that part, the cable wasn't long enough.
So I used parts of another cable to prolong it.

If I was forced to extend a cable (maybe as
a distress technique on a tandem), I'd do something
similar to what you did, but with the addition of
solder. I'm not sure what the purpose of keeping
water out is - any decent gear cable is stainless.

OK - how can you detect this? There are two cables
involved, and the string. But stain isn't the main
reason to do it but rather, if water gets in,
and especially if it turns into ice, it may break
the repair.

Here in Uppsala (at 59.9°N 17.6°E) water/ice is
a problem (probably where some of you guys live as
well). For example the outer cables are very keen on
cracking. Vulc tape is often used there as well to
prevent water from getting in, by sealing
those cracks.

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

Trying to splice an inner gear cable can be a real strong lesson in futility especially if the cable is stainless steel. The problem is trying to keep the spliced area from getting longer in use which will degrade shifting performance. Far simpler and stronger too to just get a new cable. With a new cable there's far less chance of having a problem out on tthe road. BTW, there are little aluminium caps you can buy at a bike shop and are designed to be crimped over the ends of the cables to prevent them from fraying/unravelling.

Cheers

On 7/28/2015 5:06 PM, Emanuel Berg wrote:
Phil W Lee writes:

Replace it. If it's damaged in the middle ...

No, it was damaged (frilly) at the end, but when I cut
away that part, the cable wasn't long enough.
So I used parts of another cable to prolong it.

How long did it take you to make that repair, compared with just
replacing the cable?

What is the cost of a new cable?

Have you figured out how much money you're saving per hour? I imagine
your effective wage is very low.


--
- Frank Krygowski