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

Need to strip 0.1 mm off some derailleur housing for ferrule

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.

Need to strip 0.1 mm off some derailleur housing for ferrule

Reply

Old 12-06-17, 03:01 PM
  #1  
masi61
Senior Member
Thread Starter
 
masi61's Avatar
 
Join Date: Oct 2005
Location: SW Ohio
Posts: 1,933

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
Need to strip 0.1 mm off some derailleur housing for ferrule

I need suggestions on a slick way to remove just a very small amount of clear outer housing on Jagwire housing that is about 4.6 mm outer diameter. The derailleur housing is Jagwire woven stainless steel look, gold color with a glossy clear cover. Iím needing to extend them a short length due to miscalculation. I did a nice tape job on my bars and the housing exits near the stem and plunges down to the down tube braze-on adjuster. The regular ferrules fit fine but iím trying to use a double ended ferrule in order to gain about 3Ē extra. I found some nice Jagwire ones at the bike shop for $2 each that should work but donít. The inner diameter for the double ended ferrule is ~4.5mm, 0.1mm too tight.

Is there any handy way to ream the ferrule to gain the clearance I need? Or, what would be the most efficient way to strip away some of the clear outer cover to create a perfect fit?
I know iím over thinking this but sometimes itís the little annoying things like this that really mess with your mind!!
Thanks for any help.
masi61 is offline  
Reply With Quote
Old 12-06-17, 03:14 PM
  #2  
tyrion
Senior Member
 
tyrion's Avatar
 
Join Date: Oct 2015
Location: San Diego, California
Posts: 2,049

Bikes: Breezer Radar

Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 1053 Post(s)
Sandpaper? Wrap it around the end of the housing and twist twist twist.
tyrion is online now  
Reply With Quote
Old 12-06-17, 03:21 PM
  #3  
masi61
Senior Member
Thread Starter
 
masi61's Avatar
 
Join Date: Oct 2005
Location: SW Ohio
Posts: 1,933

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
Originally Posted by tyrion View Post
Sandpaper? Wrap it around the end of the housing and twist twist twist.
Oh yeah, well duh, - I was thinking I needed a blade. Will use some sandpaper, thanks...
masi61 is offline  
Reply With Quote
Old 12-06-17, 07:35 PM
  #4  
SethAZ
Senior Member
 
SethAZ's Avatar
 
Join Date: Oct 2013
Posts: 937

Bikes: 2018 Lynskey R260, 2005 Diamondback 29er, 2003 Trek 2300

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 382 Post(s)
With a pair of reading glasses (it happens to everyone eventually...) and an Xacto knife that would take like 3 minutes. But yeah, sandpaper should work too.
SethAZ is offline  
Reply With Quote
Old 12-06-17, 08:07 PM
  #5  
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Posts: 8,856
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 394 Post(s)
Ditto the sandpaper. I've done it a couple times to clean up the plastic when it expands from heat created when I grind the end of the housing flat.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline  
Reply With Quote
Old 12-06-17, 09:44 PM
  #6  
Aubergine 
Senior Member
 
Join Date: Nov 2015
Location: Seattle and Reims
Posts: 2,640
Mentioned: 25 Post(s)
Tagged: 0 Thread(s)
Quoted: 640 Post(s)
Yeah, I use a sharp knife to pare off tiny snips of the plastic.
Aubergine is offline  
Reply With Quote
Old 12-06-17, 10:33 PM
  #7  
maddog34
Senior Member
 
maddog34's Avatar
 
Join Date: Jul 2015
Location: NW Oregon
Posts: 1,391

Bikes: !981 Trek 930R Custom, Diamondback ascent with SERIOUS updates, and a trek 6700 with updates

Mentioned: 11 Post(s)
Tagged: 1 Thread(s)
Quoted: 551 Post(s)
razor knife with a fresh blade.
maddog34 is offline  
Reply With Quote
Old 12-07-17, 12:18 AM
  #8  
bikeme
Senior Member
 
Join Date: May 2001
Location: Sunny so. cal.
Posts: 703
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
If you go with a blade, use it 90 degrees to the housing to scrap vs slice off the excess. trying to slice it off will be a disaster (I've done this with other items)
bikeme is offline  
Reply With Quote
Old 12-07-17, 02:31 PM
  #9  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 6,027

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 585 Post(s)
You might be able to heat the plastic cover with something like a hairdryer, enough to insert it into the ferrule. Or try dipping into alcohol or hot soapy water and just shoving it in. If you only have 0.1mm interference it might go right in.
dsbrantjr is offline  
Reply With Quote
Old 12-07-17, 05:29 PM
  #10  
Davet
Licensed Bike Geek
 
Davet's Avatar
 
Join Date: Oct 2002
Location: Los Barriles, Baja Sur, Mexico
Posts: 1,208

Bikes: Kirk Terraplane, Serotta Ottrott, Spectrum Super Custom, Hampsten Carbon Leger Tournesol

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 46 Post(s)
Isn’t there a step-down 5mm~4mm ferrule?
Davet is offline  
Reply With Quote
Old 12-07-17, 06:14 PM
  #11  
Jon T
Senior Member
 
Join Date: Jun 2017
Location: West Orange County, CA
Posts: 852

Bikes: '84 Peugeot PH10LE

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 295 Post(s)
.1mm equates to .004". A piece of notebook paper is .003" thick. I think the sand paper will get rid of your excess thickness in about 3 heart beats.
Jon
Jon T is offline  
Reply With Quote
Old 12-08-17, 11:38 AM
  #12  
masi61
Senior Member
Thread Starter
 
masi61's Avatar
 
Join Date: Oct 2005
Location: SW Ohio
Posts: 1,933

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
https://flic.kr/p/22ePwyJ

Thinning the outer housing with a diamond Swiss file had been my plan. Problem is, the weave or mesh is just below the clear outer cover and it appears quite delicate. So reaming out the double ended ferrule (and leaving the housing alone) seemed the more satisfying course of action. I used a 3/16Ē reamer at low speed in my drill press with some tap oil for lubrication & it worked great!

https://flic.kr/p/21cKAfm

PS: Iím using Flickír for my images which does appear to work to create a link. But my desire is for the image to immediately pop up without clicking the link. Can someone tell me how to use Flickír more effectively?

Last edited by masi61; 12-08-17 at 12:03 PM.
masi61 is offline  
Reply With Quote
Old 12-08-17, 11:45 AM
  #13  
masi61
Senior Member
Thread Starter
 
masi61's Avatar
 
Join Date: Oct 2005
Location: SW Ohio
Posts: 1,933

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
https://flic.kr/p/CDtMHM

Here you get a view of last weekís fresh tape job with the too short derailleur compressionless housing...

Last edited by masi61; 12-08-17 at 11:58 AM.
masi61 is offline  
Reply With Quote
Old 12-08-17, 01:18 PM
  #14  
masi61
Senior Member
Thread Starter
 
masi61's Avatar
 
Join Date: Oct 2005
Location: SW Ohio
Posts: 1,933

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 340 Post(s)
ďExtendersĒ in place on compressionless housing: https://flic.kr/p/22i4vae
masi61 is offline  
Reply With Quote
Old 12-08-17, 01:35 PM
  #15  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 39,644

Bikes: 8

Mentioned: 167 Post(s)
Tagged: 0 Thread(s)
Quoted: 6194 Post(s)
Or... put an oversize brass ferrule on, and squeeze it around the housing..
fietsbob is online now  
Reply With Quote

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