|Ultrgra shifting problem||rhino999|
May 29, 2003 11:25 AM
|I just recieved my new bike in the mai.l During the first very light test ride just around the parking lot all seemed well. I took it back in and started double checking everything. I was scoping the rear deraileur and pushed the lever to shift into a smaller sprocket. It didn't seem to engage. After a good bit of experimentation I have decided that the problem is with the shifter and not the deraileur. If I just push the lever to shift into a smaller sprocket nothing happens. It seems to pull on the brake lever too much so no shifting occurs. If I hold the brake lever still it shifts like a champ. I ama bit nervous about just ripping the thing apart since I have no idea what I am looking for. I have been into MTB for years but now that i am in the flat delta of Louisiana a road bike makes much more sense....only if I can get it to shift though! Any tips would be great as I really don't want to hassle with shipping it back or replaceing stuff. I just want to ride!|
May 29, 2003 2:55 PM
|Don't take the shifters apart.
Read your owner's manual.
Learn how to adjust the derailleurs and cable tension. There are several books and web sites to help. Try Park Tools web site and www.sheldonbrown.com.
|Park Tool site............||davet|
May 29, 2003 5:33 PM
.......this will explain everything you need to know about setting up and adjusting your rear dérailleur. It is VERY important that you do what is described in the same order as the description. Don't try adjusting anything out of sequence.
|Still not fixed||rhino999|
May 30, 2003 6:38 AM
|I followed the park site exactly and still no help. The derailer was never malfunctioning but it was worth a try. The issue is that the shifter levers don't move independantly enough. As it says in the manual for the Ultegra shifters "Gears will not shift when both levers are pressed simultaneously" When I push the smaller lever to shift to a smaller gear I can feel when it should make the click to shift but at this point both levers move and no shift occurs. There seems to not be enough tension holding the larger lever back. If I hold the larger lever still and then push the small lever it shifts fine. Any ideas?|
|Search the board||pitt83|
May 30, 2003 9:15 AM
|Common failure of Shimano STI is that levers won't move independantly. My 105's died that death and only the trash can fixed the problem. Sounds like you have a warantee issue. This usually happens after riding a few years.|
|Check the screw||B2|
May 31, 2003 3:29 PM
|behind the shift levers (see photo). This is screw commonly backs out, but the problem it creates is that it prevents the small shift lever from returning to normal position. Maybe somehow it's causing the the two shift levers to move as a unit?