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


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-08-07, 08:14 AM   #1
yellowcanoe1
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Baltimore, MD
Bikes: Tommasini Sintesi ~1998
Posts: 66
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cable inside top tube replacement

Recently bought a late 90's Tomassini Sintesi, steel frame with rear brake cable running inside the top tube. I am going to replace all the cables for the first time, and just wondering: when I pull that rear brake cable out from inside the top tube, is there any trick to getting a new cable back in there? Will it thread right through, or do I have to do something like pulling it through the tube with the old cable? Thanks.
yellowcanoe1 is offline   Reply With Quote
Old 11-08-07, 08:32 AM   #2
dvs cycles
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Bikes:
Posts: 1,163
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Some have a tube inside connected each end so no problem. My pinarello doesn't so I have to slide a cable sleeve over the raw cable and into the top tube to provide a path to get the new one in every time.
If I lose it it is a bear to fish from hole to hole. Pull yours apart slightly and blow some lube in the hole and see if it comes out the other end.
dvs cycles is offline   Reply With Quote
Old 11-08-07, 08:55 AM   #3
seres
Member
 
seres's Avatar
 
Join Date: Sep 2005
Location: Alaska
Bikes:
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If there is no inside tube connecting the ends (or if you can not determine this), then attach a thin "pull wire" to the brake cable BEFORE you pull it out. Then attach the new cable to the pull wire when installing it.
__________________
Eric
seres is offline   Reply With Quote
Old 11-08-07, 12:49 PM   #4
yellowcanoe1
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Baltimore, MD
Bikes: Tommasini Sintesi ~1998
Posts: 66
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I sent Tommasini an email asking about this - will post their reply here if/when they respond. Also see thread about this I started under Classic/Vintage. Thanks!
- Michael
yellowcanoe1 is offline   Reply With Quote
Old 11-08-07, 02:20 PM   #5
dobber
Perineal Pressurized
 
dobber's Avatar
 
Join Date: Oct 2003
Location: In Ebritated
Bikes:
Posts: 6,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I tackled this problem with my SR Litage frame. Tried all the suggested methods along with a liberal amount of cussing and thoughts of sacrificing a virgin or chicken.

By happenstance, I had the cable stuck down the tube when I started twirling it back and forth between my finger and thumb. To my surprise, it popped out the back end. Tempting fate, I pulled it back out and repeated the process. After several successful repeats, I can only surmise that there is some type of ramp or funnel installed that helps thread the cable through.
__________________
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
dobber is offline   Reply With Quote
Old 11-08-07, 02:25 PM   #6
vpiuva
*
 
vpiuva's Avatar
 
Join Date: Jan 2007
Bikes:
Posts: 3,458
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
See if you can pull the housing back and forth in the top tube. If you can, then you have no issues in just replacing a cable. If you can't, because there is no housing in the TT, it's more fun.
vpiuva is offline   Reply With Quote
Old 11-08-07, 04:57 PM   #7
genejockey
Klaatu..Verata..Necktie?
 
genejockey's Avatar
 
Join Date: May 2007
Location: SF Bay Area
Bikes: Battaglin MAX, Chorus kit; Bianchi 928 Veloce; Ritchey Road Logic, 7410 Dura Ace
Posts: 1,099
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I recently built up a 90's Italian steel frame with internal brake cable routing. It's one of those where the cable and the housing both run through the top tube. Both had been pulled out when i got it.

I took the brake cable and put it in the front opening. In the back end, I put a loop of spare cable. I pushed the first cable till it went through the loop, then I pulled the loop out the hole, bringing with it the other cable.

Sounds easy, but it took a dozen tries.

Next, I fed the new cable housing over the brake cable. It went right through, no muss, no fuss.

So, I guess what I'm saying is, if yours is like mine, DON'T pull both the cable and the housing out!

I'd suggest feeding the new cable (with the original soldered end) through the old housing, then pull the old housing out and feed the new housing over the new cable. Voila! New cable and housing.
genejockey is offline   Reply With Quote
Old 11-08-07, 05:17 PM   #8
yellowcanoe1
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Baltimore, MD
Bikes: Tommasini Sintesi ~1998
Posts: 66
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
So, I guess what I'm saying is, if yours is like mine, DON'T pull both the cable and the housing out!

I'd suggest feeding the new cable (with the original soldered end) through the old housing, then pull the old housing out and feed the new housing over the new cable. Voila! New cable and housing.
Sounds like a great plan Gene - I'll try this, thanks. Still no reply to my email from Tommasini-USA. Will post their answer if they write back.
yellowcanoe1 is offline   Reply With Quote
Old 11-09-07, 08:13 AM   #9
yellowcanoe1
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Baltimore, MD
Bikes: Tommasini Sintesi ~1998
Posts: 66
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Another "why didn't I think of that!!!" idea from Henke on the Classic & Vintage board:

"I have a bike with internal routing. When the time comes to change cables, I just remove the seat with post and use my index finger to point the new cable up the hole from inside the toptube. I have never had a problem with this method. Guess you need quite long and slim fingers, though."
Tomassini questions
yellowcanoe1 is offline   Reply With Quote
Old 11-09-07, 09:32 AM   #10
dvs cycles
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Bikes:
Posts: 1,163
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by yellowcanoe1 View Post
Another "why didn't I think of that!!!" idea from Henke on the Classic & Vintage board:

"I have a bike with internal routing. When the time comes to change cables, I just remove the seat with post and use my index finger to point the new cable up the hole from inside the toptube. I have never had a problem with this method. Guess you need quite long and slim fingers, though."
Tomassini questions
Unless it is like my Pinarello and the top tube only has a 3/8" hole in each end.
Have to take some thin wire and bend it until I find the hole on the other end.
That's why I slide some cable liner tube over the cable untill it is out of both holes and pull old cable out.
Slide new cable in and remove liner. Done. Been doing this for 20 years with this bike. It works.
dvs cycles is offline   Reply With Quote
Old 11-09-07, 09:45 AM   #11
genejockey
Klaatu..Verata..Necktie?
 
genejockey's Avatar
 
Join Date: May 2007
Location: SF Bay Area
Bikes: Battaglin MAX, Chorus kit; Bianchi 928 Veloce; Ritchey Road Logic, 7410 Dura Ace
Posts: 1,099
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by yellowcanoe1 View Post
Another "why didn't I think of that!!!" idea from Henke on the Classic & Vintage board:

"I have a bike with internal routing. When the time comes to change cables, I just remove the seat with post and use my index finger to point the new cable up the hole from inside the toptube. I have never had a problem with this method. Guess you need quite long and slim fingers, though."
Tomassini questions
Unfortunately for me, on my bike that hole was only big enough to get the very tip of my pinky into it.
genejockey 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 01:00 PM.