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Cable routing on mountain bike.



 
 
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  #1  
Old October 5th 16, 09:30 PM posted to rec.bicycles.tech
Benderthe.evilrobot
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Posts: 128
Default Cable routing on mountain bike.

Rebuilding a pretty much stripped frame, it looks fairly simple, but so far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.

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  #2  
Old October 6th 16, 12:56 AM posted to rec.bicycles.tech
John B.[_6_]
external usenet poster
 
Posts: 2,202
Default Cable routing on mountain bike.

On Wed, 5 Oct 2016 21:30:50 +0100, "Benderthe.evilrobot"
wrote:

Rebuilding a pretty much stripped frame, it looks fairly simple, but so far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.


If the cable stops are all on the top of the top-tube than, usually,
you just use the existing cable and the bare cable runs between the
cable stops.
http://tinyurl.com/hhxy2yl

If it is a road bike than usually the rear brake cable runs either
above or below the top-tube. If no cable stops than the cable housing
is probably attached to the top-tube with small clips.
http://tinyurl.com/gwb9r4o
The two shift cables run below the down-tube. With either cable stops
near the front of the down-tube or if designed for down tube shifters
than no cable stops at al.
http://tinyurl.com/znpav2e
--
cheers,

John B.

  #3  
Old October 6th 16, 05:58 AM posted to rec.bicycles.tech
DATAKOLL MARINE RESEARCH
external usenet poster
 
Posts: 2,011
Default Cable routing on mountain bike.

Doahn leave cables bare on top tube

Install new BB cable guide

Generous loop into deray with quality housing

Search eg diamondback: https://www.google.com/search?site=&...k1.ZUpcw5D9CyA

  #4  
Old October 6th 16, 06:19 PM posted to rec.bicycles.tech
Benderthe.evilrobot
external usenet poster
 
Posts: 128
Default Cable routing on mountain bike.


"John B." wrote in message
...
On Wed, 5 Oct 2016 21:30:50 +0100, "Benderthe.evilrobot"
wrote:

Rebuilding a pretty much stripped frame, it looks fairly simple, but so
far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom
bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.


If the cable stops are all on the top of the top-tube than, usually,
you just use the existing cable and the bare cable runs between the
cable stops.


I guess your reading comprehension hasn't improved - I stated that it has a
plastic cable guide under the bottom bracket.

Also I stated that the bike I'm using has cables along the top tube - most
people would understand that I can't just copy that on the frame I'm
building.

  #5  
Old October 6th 16, 08:27 PM posted to rec.bicycles.tech
Doug Landau
external usenet poster
 
Posts: 1,424
Default Cable routing on mountain bike.

On Wednesday, October 5, 2016 at 9:58:54 PM UTC-7, DATAKOLL MARINE RESEARCH wrote:
Doahn leave cables bare on top tube

Install new BB cable guide

Generous loop into deray with quality housing

Search eg diamondback: https://www.google.com/search?site=&...k1.ZUpcw5D9CyA


Oh, don't be such a sophist
  #6  
Old October 6th 16, 09:20 PM posted to rec.bicycles.tech
Benderthe.evilrobot
external usenet poster
 
Posts: 128
Default Cable routing on mountain bike.


"Doug Landau" wrote in message
...
On Wednesday, October 5, 2016 at 9:58:54 PM UTC-7, DATAKOLL MARINE
RESEARCH wrote:
Doahn leave cables bare on top tube

Install new BB cable guide

Generous loop into deray with quality housing

Search eg diamondback:
https://www.google.com/search?site=&...k1.ZUpcw5D9CyA


Oh, don't be such a sophist


Strange as it may seem - that's the nearest answer so far................

Various pictures of cable fittings, but what I really need is guidance on
routing of each whole cable.

It probably isn't all that difficult to figure out - but a diagram would
inspire more confidence before I start cutting cable outer.

  #7  
Old October 7th 16, 01:16 AM posted to rec.bicycles.tech
John B.[_6_]
external usenet poster
 
Posts: 2,202
Default Cable routing on mountain bike.

On Thu, 6 Oct 2016 18:19:50 +0100, "Benderthe.evilrobot"
wrote:


"John B." wrote in message
.. .
On Wed, 5 Oct 2016 21:30:50 +0100, "Benderthe.evilrobot"
wrote:

Rebuilding a pretty much stripped frame, it looks fairly simple, but so
far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom
bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.


If the cable stops are all on the top of the top-tube than, usually,
you just use the existing cable and the bare cable runs between the
cable stops.


I guess your reading comprehension hasn't improved - I stated that it has a
plastic cable guide under the bottom bracket.

Also I stated that the bike I'm using has cables along the top tube - most
people would understand that I can't just copy that on the frame I'm
building.


You say "The bike I'm using has all its cable runs along the top
tube." so I discussed possible top tube configurations. Now it seems
to have changed to "under the bottom bracket" which is a bit
different.
--
cheers,

John B.

  #8  
Old October 7th 16, 02:45 AM posted to rec.bicycles.tech
DATAKOLL MARINE RESEARCH
external usenet poster
 
Posts: 2,011
Default Cable routing on mountain bike.

uh thinking is the frame is older n a new guide .....costing peanuts.....is from a generation better plastic .....


as for the top tube ? no reason producing developmental situations when the wires are just as good where the engineer placed them.

my reading ability is good. speaking with hardheads isnot in odor
  #9  
Old October 7th 16, 03:48 AM posted to rec.bicycles.tech
Sir Ridesalot
external usenet poster
 
Posts: 5,270
Default Cable routing on mountain bike.

On Thursday, October 6, 2016 at 8:17:00 PM UTC-4, John B. wrote:
On Thu, 6 Oct 2016 18:19:50 +0100, "Benderthe.evilrobot"
wrote:


"John B." wrote in message
.. .
On Wed, 5 Oct 2016 21:30:50 +0100, "Benderthe.evilrobot"
wrote:

Rebuilding a pretty much stripped frame, it looks fairly simple, but so
far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom
bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.

If the cable stops are all on the top of the top-tube than, usually,
you just use the existing cable and the bare cable runs between the
cable stops.


I guess your reading comprehension hasn't improved - I stated that it has a
plastic cable guide under the bottom bracket.

Also I stated that the bike I'm using has cables along the top tube - most
people would understand that I can't just copy that on the frame I'm
building.


You say "The bike I'm using has all its cable runs along the top
tube." so I discussed possible top tube configurations. Now it seems
to have changed to "under the bottom bracket" which is a bit
different.
--
cheers,

John B.


Methinks he is currently using a bicvycle with the cables along the top tube. Methinks the bike he wants to put the cables on has an under the bottom bracket cable guide and thus needs cable run there. Why he mentioned the top cable guide bike is beyond me as it certainly confused the issue.

He needs to run the cable housing to the cable stops (most likely) on the down tube then run a short length of cable housing from the chainstay stop to the derailler. He needs to offer up the cable housing to each location. I'd do it by stciking one end of the housing into a downtube cable stop and then whilst keeping a nice gentle curve in the housing take the housing to either the brake lever or shif lever on the handlebar. Make sure the handle ba/wheel assemble can go side to side without pulling the cable housing out of the stop. When that length is determined then cut the housing and use that piece to measure another length of housing for the opposite side. Repeat as need for other cables. The rear derailer cable housing usually has about a 3 inches radius from the derailler stop to the derailler. make surethe housing is long enough to allow the derailler to pivot throughout its full travel.

Cheers
  #10  
Old October 7th 16, 04:49 AM posted to rec.bicycles.tech
John B.[_6_]
external usenet poster
 
Posts: 2,202
Default Cable routing on mountain bike.

On Thu, 6 Oct 2016 19:48:39 -0700 (PDT), Sir Ridesalot
wrote:

On Thursday, October 6, 2016 at 8:17:00 PM UTC-4, John B. wrote:
On Thu, 6 Oct 2016 18:19:50 +0100, "Benderthe.evilrobot"
wrote:


"John B." wrote in message
.. .
On Wed, 5 Oct 2016 21:30:50 +0100, "Benderthe.evilrobot"
wrote:

Rebuilding a pretty much stripped frame, it looks fairly simple, but so
far
I've only got as far as buying the cable. Some guidance would be handy
before I start cutting..........

An email to the manufacturer went unanswered and Sheldon Brown doesn't get
that specific on cable routing. Google wasn't much help either.

Its the cable layout that runs in a plastic runner under the bottom
bracket.
The bike I'm using has all its cable runs along the top tube.

Thanks for any help.

If the cable stops are all on the top of the top-tube than, usually,
you just use the existing cable and the bare cable runs between the
cable stops.

I guess your reading comprehension hasn't improved - I stated that it has a
plastic cable guide under the bottom bracket.

Also I stated that the bike I'm using has cables along the top tube - most
people would understand that I can't just copy that on the frame I'm
building.


You say "The bike I'm using has all its cable runs along the top
tube." so I discussed possible top tube configurations. Now it seems
to have changed to "under the bottom bracket" which is a bit
different.
--
cheers,

John B.


Methinks he is currently using a bicvycle with the cables along the top tube. Methinks the bike he wants to put the cables on has an under the bottom bracket cable guide and thus needs cable run there. Why he mentioned the top cable guide bike is beyond me as it certainly confused the issue.


Sure. I've got a bile like that. I think that it used to be common
with hard tailed mountain bikes. See
https://www.flickr.com/photos/lovely...le/7854734170/
but if it has the cable stops on the top tube then it has the rest of
the cable stops to route the cables.

But most of them used, I believe, top pull front derailers, or the
more modern "either way" derailers, so if he has the "wrong" type
front derailer something has to change.


He needs to run the cable housing to the cable stops (most likely) on the down tube then run a short length of cable housing from the chainstay stop to the derailler. He needs to offer up the cable housing to each location. I'd do it by stciking one end of the housing into a downtube cable stop and then whilst keeping a nice gentle curve in the housing take the housing to either the brake lever or shif lever on the handlebar. Make sure the handle ba/wheel assemble can go side to side without pulling the cable housing out of the stop. When that length is determined then cut the housing and use that piece to measure another length of housing for the opposite side. Repeat as need for other cables. The rear derailer cable housing usually has about a 3 inches radius from the derailler stop to the derailler. make surethe housing is long enough to allow the derailler to pivot throughout its full travel.


That is the way that most people do it, anyway :-)
--
cheers,

John B.

 




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