|Need advise (STI shifters)||Chechu|
Jan 16, 2003 2:24 AM
|I am going to buy a new pair of Ultegra STI´s but I am not sure to buy the triple or the double ring version.
Anyone knows if the distance beetwen the rings are the same?
I mean: Could I use triple levers with two rings cranksets? (Of course, I know that I´ll need to readjust the front derailleur to prevent the fall of the chain, etc)
More cuestions: Which other parts need to be specific to mount a triple crankset? Bottom Braket (chainline...), derailleurs.
Thanks in advance!
|They're common (nm)||cyclequip|
Jan 16, 2003 5:06 AM
|They shift a double or triple,same part # for either...nm||Rusty Coggs|
Jan 16, 2003 6:08 AM
|Shifters, believe it or not, are the same.||Spoke Wrench|
Jan 16, 2003 5:59 AM
|As a double, I get two shift positions for each chainring. As a triple, I get two shift positions for the middle chainring and one each for the other two.
If you want a factory looking triple installation, you will need, in addition to the crankset, a longer bottom bracket and new front and rear derailleurs.
|Which leads to an interesting glitch with the STI double setup||Niwot|
Jan 18, 2003 12:33 AM
|When shifting up from the small chainring to the big ring in a double, if you make a very hard shift (i.e., if you just shove the lever in hard and quickly) you can actually just drop the chain -- the chain is pushed right over the big chainring and it drops off.
BTW, Dura Ace has long had two shift positions for each ring, even with 8-speed D-A, long before the introduction of road triples.
|Mine doesn't.||Spoke Wrench|
Jan 18, 2003 6:51 AM
|I have an Ultegra double on my road bike and an Ultegra triple on my tandem. I assume the shifters are the same because they are both two buttom flight decks which were only offered for a year or so. The two bikes shift just fine for me just as I described. I can't recall ever dropping a chain on either.|
|Thanks guys! - nm -||Chechu|
Jan 18, 2003 8:36 AM