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 03-31-07, 08:55 AM   #1
soloban
Senior Member
Thread Starter
 
Join Date: Mar 2007
Location: Lexington, MA
Bikes:
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Took apart shifter, cant reassemble

I was re-cabling the wife's bike last night and for some stupid reason took too many parts off the front shifter to try to reinsert the new cable. Well, I humpty-dumpty'ied it and now I can't get all back to together again. Its a low end shimano rapidfire shifter (the kind with two thumb levers and integrated brake lever). Ok, so two questions here.....

1. How do you keep the new cable end from fraying as you reroute it. I had two thoughts let me know if they sound like good ideas. Dipping the end of the cable in wax or putting a small piece of heat shrink tubing on the end

2. Should I hang my head in shame and take it into the LBS with a bag or parts or is it just cheaper to buy a new set of shifter / levers?
soloban is offline   Reply With Quote
Old 03-31-07, 09:09 AM   #2
endform
blacksheep the blemish
 
Join Date: Nov 2004
Location: Portland/Greendale
Bikes: 1973 Schwinn World Voyageur (manufactured by panasonic), Italvega Super Speciale (fixed, primary ride now), Kona 2004 JTS 10 spd
Posts: 1,063
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Question 1 can be answered with, buy nicer cables.

The cables that I buy (that cost maybe a dollar more?) are prelubed and have a soldered end that keeps them from fraying easily (I've never frayed one but I'm not going to say it's impossible).

Question 2, if you're willing to buy a new shifter why not just try your darndest to fiddle that one you took apart back together, if you break it, what's the big deal.
endform is offline   Reply With Quote
Old 03-31-07, 09:22 AM   #3
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,614
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 89 Post(s)
I don't know what you mean by: took too many pieces off. Generally replacing a cable on a Rapid Fire shifter involves shifting it into the lowest gear position and pushing the cable through. Sometimes there's a little plastic plug that you have to remove to let the cable out.

If you have taken it apart to a very significant degree, it's probably toast. New ones aren't hugely expensive, athough the connected brake lever ups the price, and it will come with a brand new cable already installed.

Speaking of cables, the secret is to acquire a good quality tool for cutting them. Using an ordinary side cutter flattens the ends and causes them to fray more easily. On my personal bikes I prefer to solder the ends before I cut them. If you do a neat job that lets you slide them back through the cable housing if you need to.
Retro Grouch is offline   Reply With Quote
Old 03-31-07, 09:38 AM   #4
royalflash
Senior Member
 
royalflash's Avatar
 
Join Date: Mar 2004
Location: Munich
Bikes: Lemond Alpe d´Huez, Scott Sub 10, homemade mtb, Radlbauer adler (old city bike), Dahon impulse (folder with 20 inch wheels), haibike eq xduro
Posts: 1,372
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I always dip the end of the new cable in super glue
__________________
only the dead have seen the end of mass motorized stupidity

Plato

(well if he was alive today he would have written it)
royalflash is offline   Reply With Quote
Old 03-31-07, 10:27 AM   #5
wroomwroomoops
Sir Fallalot
 
wroomwroomoops's Avatar
 
Join Date: Jul 2006
Location: Helsinki, Finland
Bikes:
Posts: 5,275
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I dip the (previously carefully degreased) end of the cable in hammerite paint. It takes considerable time to completely set, but then it's as good as the metallic cap.

For example, that's what I did with the brake cable on the Nexus 8, so now I don't bother re-capping it every time I change the tire.
wroomwroomoops is offline   Reply With Quote
Old 03-31-07, 12:24 PM   #6
DMF 
Elitist Troglodyte
 
DMF's Avatar
 
Join Date: Jun 2006
Location: Dallas
Bikes: 03 Raleigh Professional (steel)
Posts: 6,924
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You know the old adage? There are only two types of people who try to repair a watch.*

In the case of brifters, I'm not sure that there is more than one. You won't find many here willing to adimt having done it, much less able to tell you how to undo it. Good luck.







* watchmakers and fools
__________________
Stupidity got us into this mess - why can't it get us out?

- Will Rogers
DMF is offline   Reply With Quote
Old 03-31-07, 08:34 PM   #7
kycycler
Senior Member
 
Join Date: Mar 2007
Location: Louisville, KY
Bikes: Trek Madone 5.5, Klein Q Pro Elite, Surley LHT
Posts: 469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I hada similar situation on my wifes Bike Friday. Only difference was that the shifter fell apart in my hand . Like you I tried to reasssemble with no luck. after confering with Shimano found out that they are NOT rebuiltable . Had to purchase a new set.
kycycler is offline   Reply With Quote
Old 03-31-07, 08:39 PM   #8
DeadSailor
black betty
 
DeadSailor's Avatar
 
Join Date: Mar 2007
Location: florida
Bikes: custom flatlandbike, trek fuel ex8
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yea shifter arent really ment to be taken apart....

even if you can take it apart and put it back together....lest say you find whast broken...try to buy that part. you cant

i forget what theyre called ...but they have shifter cables that arent metallic theyre like fiber strands in the center wraped in teflon or something...idk really they look good ill probably try those next
DeadSailor is offline   Reply With Quote
Old 04-01-07, 02:48 PM   #9
soloban
Senior Member
Thread Starter
 
Join Date: Mar 2007
Location: Lexington, MA
Bikes:
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Follow up with lessons learned:

1. I swung by the LBS and picked up a different set of cables (Shimanos) and they had felt like they had better flex and they had a soldered end to keep from coming undone. I had originally purchased a recabling kit from REI (Novara). The housings and all the doo dads that came with the kit were nice, but the cables had both Mnt Bike and Rd Bike ends so you had to clip off the wrong end and it frayed rather quickly.

2. YOU DONT HAVE TO TAKE APART THE SHIFTER TO REPLACE THE CABLE. It was late and I was getting sloppy. I tried again to reassemble it but it was a no go. I'm sure there is a little chinese woman somewhere that could do it, but I sure couldnt. So I pulled the shifter off and found a replacement on eBay for $15 w/ shipping. Its the wrong color, but Ill just swap the original cover when I install it.
soloban is offline   Reply With Quote
Old 04-01-07, 02:59 PM   #10
vpiuva
*
 
vpiuva's Avatar
 
Join Date: Jan 2007
Bikes:
Posts: 3,458
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by soloban
Follow up with lessons learned:

1. I swung by the LBS and picked up a different set of cables (Shimanos) and they had felt like they had better flex and they had a soldered end to keep from coming undone. I had originally purchased a recabling kit from REI (Novara). The housings and all the doo dads that came with the kit were nice, but the cables had both Mnt Bike and Rd Bike ends so you had to clip off the wrong end and it frayed rather quickly.
2. YOU DONT HAVE TO TAKE APART THE SHIFTER TO REPLACE THE CABLE. It was late and I was getting sloppy. I tried again to reassemble it but it was a no go. I'm sure there is a little chinese woman somewhere that could do it, but I sure couldnt. So I pulled the shifter off and found a replacement on eBay for $15 w/ shipping. Its the wrong color, but Ill just swap the original cover when I install it.
Proper cable cutters are a must
vpiuva is offline   Reply With Quote
Old 04-01-07, 04:11 PM   #11
soloban
Senior Member
Thread Starter
 
Join Date: Mar 2007
Location: Lexington, MA
Bikes:
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I used my guitar string tool to cut the cables. They did a good job, the problem was the crappy cables. But I agree, the correct tool for the job.
soloban 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 09:58 PM.