|Dura Ace Shifter Problem||hfc|
Jan 12, 2004 12:24 PM
|I have 3-4 yr old D/A group (double); went out for a ride today and the front shifter would not go onto the big ring. By this I mean I could not physically move the lever more than a mm or 2. The gear shift would register on the computer (FlightDeck). I can occasionally get the derailleur to shift by really cranking on the lever, but this is accompanied by a not very pleasing grinding sound. The downshifter works properly. I've had occasional problems with some sticky shifting in the past, but it worked fine on a 40 miler last week. The cable looks OK and the derrailleur moves fine by hand. Are these the signs and symptoms of a dead shifter? Thanks to everyone for your input.|
|re: Dura Ace Shifter Problem||Chen2|
Jan 12, 2004 12:59 PM
|When this happened to mine new cables and housing fixed the problem, still using my original 1998 D-A shifters.|
|Something else to try||boneman|
Jan 12, 2004 3:17 PM
|If the cable's fine, spray some WD-40 up into the mechanism. Shift the chain up onto the big ring. While not moving the chainset, push the small STI lever and down shift the front derailleur. This will allow you to swing the whole STI lever again inwards and while holding it in, spray the WD-40 up and into the mechanism (paper towels wrapped around to catch overspray and drip). Work the mech back and forth. I just did this last night on both sides to my STI and find that it needs to be done every 18 months or so in the conditions I ride.
Another place to look is the cable tunnel on the BB. This area can fill with grit and grime. Clean and lube.
|BB cable guide||Squint|
Jan 12, 2004 4:15 PM
|This happened to me a few years back on a cold day. I got off the bike and pulled the cable manually to see what the deal was. The cable (along the downtube) wouldn't budge so I blasted the BB cable guide with my water bottle to dissolve a season's worth of Gatorade build-up and it worked again.|
Jan 12, 2004 6:01 PM
|Boneman wins the prize! I had tried WD40 already, but the little shifter trick must have given the extra oomph. I blasted the bottom bracket guide for good measure. Thanks to all!|| |