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 03-06-14, 10:55 PM   #51
xenologer
Senior Member
 
Join Date: Aug 2008
Bikes:
Posts: 2,059
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by LONO100 View Post
good point on the bianchi being a double, and as it sits right now, the FD in question sits high, but i looked at trying to lower it, but it seems that any lower, and the chain would then be coming into contact with the top of the cage , thats why i didnt want to lower it any more than it already is. i could give it a shot, but it looks like it would start coming into contact with parts of the cage that it shouldnt.
don't worry about this
you're visualising required clearance assuming a chain is covering the teeth
in actuality the chain will always be inbetween the FD cage plates, never directly under the edge of one
hence cage to ring clearance only needs to worry about the naked teeth
xenologer is offline   Reply With Quote
Old 03-06-14, 11:01 PM   #52
LONO100
Member
Thread Starter
 
Join Date: Apr 2013
Location: Bay Area CA
Bikes: Scott Scale 950, bianchi via nirone, bianchi fremont, GT avalanche 1.0, kona Muni-mula, nishiki century singlespeed, bianchi strada singlespeed conversion, bianchi eros robinson BMX, haro mirra, custom low rider bike
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i know its supposed to shift back down, i was quoting myself from an earlier post when i was asked what happens "when i pull on the cable" from an earlier poster. here is the problem and a quick summary of this thread: when the bike is on my park stand, it shifts up and down, not perfectly, but it shifts. once i put it to the road, it becomes harder to shift, it goes from ring to ring roughly and it takes much more force from my hands to the lever to upshift when im riding it than it does when its on the stand. i am aware that putting weight or load on the chain would cause these symptoms but when i test ride it, i am on flat ground and not putting much weight on the pedals as i mentioned in the beginning of the thread. i changed the cable and housing, i inspected the cage and the inside of it looks pretty good, the deraileur is sitting a bit high, but it looks like if i try to lower it any, the chain would then be running into the top part of the cage. i noticed that the barrel adjuster doesnt seem to hold as tight as normal, and the chain ring teeth look quite warn. hope this clears things up
LONO100 is offline   Reply With Quote
Old 03-07-14, 05:01 PM   #53
Wilfred Laurier
Seņor Member
 
Wilfred Laurier's Avatar
 
Join Date: Feb 2013
Bikes:
Posts: 3,812
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 90 Post(s)
front derailleur cable housing
looks to be slightly too short
but not as severe as both brake cable housings

it also looks like you might have spiral wound housing on your f der cable
instead of the lengthwise wound compressionless housing needed for accurate indexed shifting
although you should be able to get away with this with a front derialleur

also
it looks like you are missing a ferrule
or cable housing end
on the lower end of the f der cable housing
and ferrules are mandatory to achieve proper shifting

also
rear derailleur cable housing looks too long
and seems to have a kink near the headtube
Wilfred Laurier is offline   Reply With Quote
Old 03-08-14, 06:11 AM   #54
Kimmo
bike whisperer
 
Kimmo's Avatar
 
Join Date: Dec 2009
Location: Melbourne, Oz
Bikes: copy/paste links: http://velospace.org/node/36949 http://velospace.org/node/47746 http://velospace.org/node/47747
Posts: 7,099
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Have you positioned the FD properly yet? 6mm is miles out.
Kimmo is offline   Reply With Quote
Old 03-11-14, 03:58 PM   #55
icon_cycles
Junior Member
 
Join Date: Mar 2014
Location: East london
Bikes:
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You sometimes get this problem if the chain or chainset is badly warn. If this is not the case the derailleur may be set to high, it should be 1mm above the teeth of the biggest chain ring
icon_cycles 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 06:03 AM.