Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Alt Bike Culture Chopped, dropped, stretched, lifted, and otherwise cut up and put back together. The art and science of choppers, cruisers, lowriders and the vast world of mutant bicycles.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-19-09, 06:39 AM   #1
gavtatu
Senior Member
Thread Starter
 
gavtatu's Avatar
 
Join Date: Oct 2008
Location: the original jersey
Bikes: lowracer, highracer, moving bottom bracket, 2 tall bikesl
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
internal cable question?

hi all, any top tips for running internal brake and derailleur cables?
thanks
gavtatu is offline   Reply With Quote
Old 03-23-09, 03:49 AM   #2
Wordbiker
Pwnerer
 
Wordbiker's Avatar
 
Join Date: Jun 2005
Location: Pagosa Springs, CO, USA
Bikes: Road, MTB, Cruiser, Chopper, BMX
Posts: 2,907
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by gavtatu View Post
hi all, any top tips for running internal brake and derailleur cables?
thanks
Yes: Don't.

I know it looks "clean", but it does make servicing the bike more difficult and generally reduces the efficiency of the cables.

If you absolutely must add internal cable routing to a frame not designed for them, keep in mind you'll be voiding any warranties and perhaps even compromising the strength of the frame. All disclaimers said, I'd look at either adding a full internal tube and some brazed on reinforcements...or just take the frame to a builder that's had some experience with it.

If I'm way off base and your frame is made to accept them, a good trick is to use a vacuum cleaner to suck a thread through the frame, then use the thread to pull the cables through.
__________________
Quote:
Originally Posted by ahsposo View Post
Ski, bike and wish I was gay.
Wordbiker is offline   Reply With Quote
Old 03-23-09, 06:37 PM   #3
andr0id
Senior Member
 
andr0id's Avatar
 
Join Date: Feb 2009
Bikes:
Posts: 2,120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 135 Post(s)
Quote:
Originally Posted by Wordbiker View Post
Yes: Don't.

I know it looks "clean", but it does make servicing the bike more difficult and generally reduces the efficiency of the cables.
Your response makes no sense. I've had a bike with an internally routed rear brake cable for 10 years now. You poke the housing through and it pops out the other end. No vacuum cleaner or thread required. No corrosion on cable stops or ferrules and no bare cable to sweat on along the top tube. Overall, a big improvement over the standard 7 o'clock external stop method.
andr0id is offline   Reply With Quote
Old 03-23-09, 09:39 PM   #4
Six jours
Senior Member
 
Join Date: Mar 2007
Bikes:
Posts: 6,401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Some builders did the internal brake cable with a full length tube inside the top tube. To my knowledge, this is always done before the top tube is brazed into the bike, as having both ends of the top tube open makes installing the internal tube quite a bit easier. I can imagine a method of doing it after the frame is already built, but I honestly don't know if it would work.

The "standard" way does not include a full length internal tube. Two holes are drilled and after the bit breaks through the drill motor is progressively angled to make a smooth ovalized entrance for the housing. Then short lengths of brass or copper tube are silver brazed into place and the bit that sticks out is then carefully filed flush. This is much easier to do than the full length tubing, and is normally done after the frame is completed, but does make getting the housing through the frame more difficult. Either way, the appropriate tubing is available from Nova Cycle Supply.

Doing the derailleur cables is pretty simple, as they are just drilled and ovalized/angled holes in the appropriate spots. The only trick is ensuring that the holes are in exactly the right place so as to avoid adding extra friction to the cable run. The problem is installing the cables after you are finished: in my experience this is a time-sucking nightmare.

Last edited by Six jours; 03-23-09 at 09:44 PM.
Six jours is offline   Reply With Quote
Old 03-25-09, 03:53 PM   #5
gavtatu
Senior Member
Thread Starter
 
gavtatu's Avatar
 
Join Date: Oct 2008
Location: the original jersey
Bikes: lowracer, highracer, moving bottom bracket, 2 tall bikesl
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
cheers guys, gonna try it, if i`m not happy, will braze on cable stops and fill in holes!
i usually ride about for a month before stripping and paint.
gavtatu is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 06:36 PM.