jeff fox wrote: Wed May 05, 2021 6:16 pm
benadrian wrote:
Downsides; narrower tires only, if the shifters break you’ll have to do some digging or switch to bar-end/downtube, and part replacement could be a bit of a dig.
Hmmm. 28's should be good, I'd think. Can you explain why current production brake lever shifters wouldn't be compatible with this setup? Bar end/downtube would be an absolute deal breaker, as I shift a fuck ton.
To the best of my knowledge, the only 9 speed level/shifter that Shimano currently makes is for Sora, their super-budget line.
I went down a group-set rabbit hole a while back. The indexing for shifting is done by the lever. When Shimano moved from 7 to 8 and then 8 to 9 speeds, they just made the cogs closer together and the chain more narrow. The 7, 8, and 9 speed derailleurs all work the same, but the shifters just pull less cable per shift. If you wanted to move from 8 speed to 9 speed, you just bought a new shifter and cassette and you could keep your derailleur.
Then, Shimano when to 10 speed and higher, and they changed the cable pull ratio for the derailluers to make them perform better for more cogs. This broke any kind of compatibility between shifting from the 9 speed and before world. TO make things even worse, 10 speed dura ace and 10 speed ultegra and below aren't compatible. Also, 10 and 11 speed and not really compatible.
So that badass Litespeed has a 3x9 dura ace setup. When tuned up, that will be amazing. However, non of those parts are currently made, and no intermediate or higher end Shimano parts are made for 9 speed. You would have to jump on the used market to find a compatible shifter, or buy the "Squier" version of the shifter (to use a guitar analogy).
Here's what's cool, though. As road bikes shift to disc brakes and wider tires, really high end components like wheels and groupsets can be found for pretty cheap. Even bikes from like 5 years ago are not really compatible with current bikes. that's why they're asking $1,400 for a titanium bike that would have been $5k -$6k 15 years ago.