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


Go Back   > >

Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-25-13, 03:02 PM   #1
greenteei
Junior Member
Thread Starter
 
Join Date: Sep 2009
Bikes:
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Help with front derailleur issues 2003 Bianchi Axis

I just bought a 2003 Bianchi Axis and have brought it to 2 different shops in the hope that they can help me get the front derailleur working properly. So far, one of the shops told me it wouldnt be possible since the Shimano 105 and the Shimano LX FD (stock configuration) wont work together and suggested that I get a 105 Front Derailleur. The other shop got it to shift decently well but also said the shifter/derailleur combo dont have the proper cable pull ratios. What are my best options? I have a bar end front shifter that may work? or Ive seen the CX70 derailleur? or Get the pully? thanks for your opinions! Im really looking to spend the least possible... Thanks!
greenteei is offline   Reply With Quote
Old 04-25-13, 03:40 PM   #2
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,086
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
By using a Friction shifter, front derailleur, the chan shover will shove the chain sideways derailing it.

the the pull {ratio) is something You do, rather than a dumb mechanisim doing is for you.. ..

yea if you got a cable coming down from the top, and use a FD made to be pulled down,
get a pulley to clamp around the seat tube , and put itunder the FD.

those things have a plastic cable guide, you can clamp on a housing stop
on the front of the downtube and Not Use The top tube cable routing too..

Last edited by fietsbob; 04-25-13 at 03:45 PM.
fietsbob is offline   Reply With Quote
Old 04-25-13, 04:27 PM   #3
Andy_K 
Senior Member
 
Andy_K's Avatar
 
Join Date: Jan 2008
Location: Beaverton, OR
Bikes: 2013 Kona Jake, 2015 Kona Jake the Snake, 2008 Kona Major Jake, 2013 Kona Jake the Snake, 2006 Kona Kula, 2012 Ridley Excalibur, 2008 Surly Long Haul Trucker, 2001 LeMond Buenos Aires, 1984 Pinarello Gran Turismo, 1982 Trek 614, 1979 Austro-Daimler
Posts: 8,410
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
What both shops told you is basically true. With a double chainring setup you can make the mismatched MTB/road combination work (as the second shop apparently did), but it will be less than ideal.

If you aren't happy with the way the second shop got it working then your options are pretty much as you described.

Bar end shifters offer the best possible front end shifting. You lose brake/shifter integration (unless you go with RetroShift!), but you gain perfect control of the derailleur position.

I believe Shimano changed the cable pull ratio of their road front derailleurs with the latest round of updates (5700/6700/CX70), so I think it's possible that the CX70 front derailleur wouldn't work for you. I'm not sure of the details, but I think pre-1990 Shimano MTB front derailleurs had cable pull closer to the road models (possibly the same), but I don't know if you'd be able to find one that was top-pull.

Problem Solvers makes a clamp-on derailleur pulley, and you could couple that with a pre-5700/6700 road front derailleur. You can usually find those cheap on eBay.

Cheapest possible solution: live with what you have.

In your shoes, I'd go with the pulley+road FD solution.
__________________
My Bikes
Andy_K 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 04:19 PM.