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Front derailher not shifting
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 2009-06-30 10:35 AM |
Elite  2768     Raleigh |  Subject: Front derailher not shiftingSo, is there a good site I can go to that will give me pretty easy instructions on how I need to tighten the cable for my front derahiler (sp) because as of right now when I try to shift from the big to little chain ring but it will go from little to big... oh this is on a P2C tri bike if that matters any help would be great |
| 2009-06-30 10:37 AM in reply to: #2253021 |
Cycling Guru 15134 Fulton, MD | Subject: RE: Front derailher not shifting There's nothing to it. 5mm allen wrench and either use your fingers or a pair of pliers. Loosen the bolt on the back of the der. that clamps the cable when you have no tension on the cable (i.e. in the small ring). Pull the cable snug, tighten the bolt. Done. |
| 2009-06-30 10:42 AM in reply to: #2253021 |
| Extreme Veteran 664 Minneapolis | Subject: RE: Front derailher not shifting The derailleur may be OK, but you could have some soft (flexy) chainrings - flimsy chainrings make it tough (sometimes impossible) to go from little-to-big, and no amount of deraileur tuning will help. Been there, done that. Just another thing to consider as you are troubleshooting... |
| 2009-06-30 10:49 AM in reply to: #2253048 |
Elite 2768 Raleigh | Subject: RE: Front derailher not shifting Hydro - 2009-06-30 10:42 AM The derailleur may be OK, but you could have some soft (flexy) chainrings - flimsy chainrings make it tough (sometimes impossible) to go from little-to-big, and no amount of deraileur tuning will help. Been there, done that. Just another thing to consider as you are troubleshooting... thanks but it is a fairly new dura ace chainring so I doubt it is that |
| 2009-06-30 10:50 AM in reply to: #2253026 |
Elite 2768 Raleigh | Subject: RE: Front derailher not shifting Daremo - 2009-06-30 10:37 AM There's nothing to it. 5mm allen wrench and either use your fingers or a pair of pliers. Loosen the bolt on the back of the der. that clamps the cable when you have no tension on the cable (i.e. in the small ring). Pull the cable snug, tighten the bolt. Done.
thanks Rick, does the adjustment need to be done with the bar end shifter in the small chainring? |
| 2009-06-30 12:54 PM in reply to: #2253021 |
Expert 1049 Burnaby, BC | Subject: RE: Front derailher not shifting Don't you have a barrel adjuster on the frame? Just twist that to take up some of the cable stretch until it shifts properly. |
| 2009-06-30 1:52 PM in reply to: #2253080 |
Cycling Guru 15134 Fulton, MD | Subject: RE: Front derailher not shifting Yes, you want to take all the tension off of the der. So in the "down" position on the lever which puts it in the small chainring. I personally don't like using the barrel adjuster for cable stretch adjustment. It is such a quick fix to tighten the cable with the wrench that it is a no brainer to me. |
| 2009-06-30 1:55 PM in reply to: #2253686 |
Champion 9407 Montague Gold Mines, Nova Scotia | Subject: RE: Front derailher not shifting Daremo - 2009-06-30 3:52 PM Yes, you want to take all the tension off of the der. So in the "down" position on the lever which puts it in the small chainring. I personally don't like using the barrel adjuster for cable stretch adjustment. It is such a quick fix to tighten the cable with the wrench that it is a no brainer to me. x2 - I use the barrel adjuster for on road adjustment only. Shane |
| 2009-06-30 2:42 PM in reply to: #2253021 |
Elite 2768 Raleigh | Subject: RE: Front derailher not shifting Maybe it is just me but I was unaware that a bike with enternal cable routing had barrell adjusters... where in the he!! would they be located-- under the bottom bracket? |
| 2009-06-30 3:02 PM in reply to: #2253838 |
Cycling Guru 15134 Fulton, MD | Subject: RE: Front derailher not shifting No, they are usually located at the base of your bars where the cable comes out of the bar and before it goes back into the frame. Sometimes (rarely) they don't have them but in most of those cases it is the bike builder who did that as the factory bikes will come with them. |
| 2009-06-30 3:03 PM in reply to: #2253838 |
Expert 1049 Burnaby, BC | Subject: RE: Front derailher not shifting trigods - 2009-06-30 12:42 PM Maybe it is just me but I was unaware that a bike with enternal cable routing had barrell adjusters... where in the he!! would they be located-- under the bottom bracket? You may be right, looking at the photos it looks like it only has on barrel adjuster on the RD. A 5mm hex key and a pair of pliers it is. |
| 2009-06-30 4:38 PM in reply to: #2253021 |
Expert 1053 Culpeper, VA | Subject: RE: Front derailher not shifting Not to cut in here, but Park Tool has some nice repair how-to's on their site. Here is a section that covers shifter stuff: http://www.parktool.com/repair/byregion.asp?catid=53 Recently had some front derailleur problems myself, turns out the problem was some slack in the cable and the derailleur was set too high on the seat tube. Tightened up the slack and used a penny as feeler gauge to get the derailleur set right and shifting is better. Anyway, good resource at the Park Tool website. |
| 2009-06-30 4:44 PM in reply to: #2253021 |
Champion 7595 Columbia, South Carolina | Subject: RE: Front derailher not shifting One other quick thought -- after you get the cable tightened up, if it still won't shift, check the high-low adjustment screws on the derailer. |
| 2009-06-30 4:56 PM in reply to: #2253021 |
Pro 4827 Plano, Texas | Subject: RE: Front derailher not shifting Here's the video on BT for adjusting derailleurs. Link |
| 2009-07-01 8:39 AM in reply to: #2253021 |
Champion 11989 Philly 'burbs | Subject: RE: Front derailher not shifting I have the same symptoms, could not shift down to smaller ring from middle, but could shift up to larger (triple). Once. Then couldn't get back to the middle. Check the tension spring. Mine broke  |
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