Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

What is this plastic cable coating?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

What is this plastic cable coating?

Old 04-20-22, 06:30 PM
  #1  
Airfehr
Senior Member
Thread Starter
 
Join Date: Jun 2021
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Liked 79 Times in 31 Posts
What is this plastic cable coating?

What is this coating on my derailleur cables? It's some kind of anti friction plastic only on the cables where they make a sharp bend at the bottom bracket. Not a housing liner as it's on the cable like a shrink tube and moves with the cable. The OD looks to be about 1.7 mm. Hard to read my calipers these days. I need longer cables to work with new bars and hate to have bare cable wearing through the plastic guide.
Airfehr is offline  
Old 04-20-22, 07:36 PM
  #2  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 16,252

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3420 Post(s)
Liked 2,112 Times in 1,381 Posts
These sure look like common cable liner to me. Can you reuse the sections? Can you get replacement lengths of the common liner to see if it will fit through the various ports and guides? Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Likes For Andrew R Stewart:
Old 04-20-22, 08:27 PM
  #3  
Airfehr
Senior Member
Thread Starter
 
Join Date: Jun 2021
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Liked 79 Times in 31 Posts
It's not coming off the cable without a knife. Cable does not slide inside of it.
Airfehr is offline  
Old 04-20-22, 09:01 PM
  #4  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 16,252

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3420 Post(s)
Liked 2,112 Times in 1,381 Posts
Did you buy the bike new? Have the cables been replaced since the new sale? What brand/model? Is there a LBS involved?

What you describe is not common, a cable with a short section of some sort of low friction (plastic?) coating, only at the correct spot for this bike and it's size, that is adhered to the cable enough to require destructive removal, that happens to fit through the bike brand's cable pathways well enough to not snag on them. If all this is correct than I would consider these cables to be a OEM/specific to that bike design and spec. In which case the brand, one would assume easily, should have some obligation to provide these cables for their annual replacement for at least the duration of the frame warranty.

Or you have common cables that you don't fully understand the liner and cable relationship. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 04-20-22, 09:53 PM
  #5  
Airfehr
Senior Member
Thread Starter
 
Join Date: Jun 2021
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Liked 79 Times in 31 Posts
I bought the bike used so the cables may not be original. Bike is a 2014 Giant Escape RX,
https://www.giant-bicycles.com/us/es...composite-2014
The plastic section would not have fit through the housing so I'm guessing it was applied like shrink tubing. It has a teflon greasy feel and not shrink tubing.
Airfehr is offline  
Old 04-21-22, 03:22 AM
  #6  
JoeTBM 
Droid on a mission
 
JoeTBM's Avatar
 
Join Date: May 2018
Location: Palm Coast, FL
Posts: 761

Bikes: Diamondback Wildwood Classic

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 223 Post(s)
Liked 155 Times in 108 Posts
Are you sure they are not Teflon coated cables. Got a donated bike in the other day and cable had a black Teflon coating that started to break up causing cable to hang-up. We replace with a standard DER cable and new housing.....all works great now. For your case I would cut some sections of liner or use the sleeve that is inside a v-brake noodle if you are concerned about wear of the plastic guide

https://www.ebay.com/itm/22483045736...96603743da84dc
__________________
JoeTBM (The Bike Man) - I'm a black & white type of guy, the only gray in my life is the hair on my head
www.TheBikeMenOfFlaglerCounty.com




JoeTBM is offline  
Old 04-21-22, 04:01 PM
  #7  
Airfehr
Senior Member
Thread Starter
 
Join Date: Jun 2021
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Liked 79 Times in 31 Posts
The teflon coating I have seen covers the entire cable and is thin enough to see the cable strands through it. Brake noodle sleeve is a good idea. I was looking at jagwire slick tube but I think its too wide for the guide slots. Brake noodle is a little thinner.
Airfehr is offline  
Old 04-24-22, 07:34 PM
  #8  
Airfehr
Senior Member
Thread Starter
 
Join Date: Jun 2021
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Liked 79 Times in 31 Posts
Did the cable swap today. They are long housing end cap nipples. So a skinny cable liners I was able to reuse. Cheers
Airfehr is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.