I know this question is a bit like "how long is a piece of string" but I'm curious (and a little naive) as to what combination of Sprockets I need on a Cassette.
After a successful Melbourne Cup I have been given the green light to go ahead with the purchase of some new wheels. I think I've narrowed down the wheel selection, however the selection of the Cassette is proving a little more difficult.
I've decide to go with the Dura-Ace 7900 10 Speed Cassette, however there is quite a choice for sprocket combo.
I'm running 53-39T up front and my current wheels are 12-23T and this combo seems ok and seems sufficient for climbing and fast flats and downhills.
My first thoughts were to just get the Dura-Ace equivalent 12-23. But is this an opportunity to change things up for the better.....That and my usual online store doesn't have the 12-23 in stock.
My search online didn't really clear things up for me so I thought I'd put it out there for comment. Happy to hear all sides of the story and what works best for who and what.
At this stage I'm leaning towards the 11-23.......
Agree. As I'm racing and accelerating, I'll shift from 39-15 to 53-19 then 18..17..16... etc. as it's the next biggest gear that enables continuous acceleration to top speed.
I don't get it. Your shifting from small to big chain ring during a race? I assume its when your climbing right?
Personally I'd avoid any big to small (or vice versa) changes during a race. This is when your most likely to drop your chain.
Just to reiterate, bike fit is key when climbing.
What's not to get? I race all year round and do this all the time... and so does everyone else I race with...because you have to! If you're dropping your chain the front derailleur isn't tuned properly.
We do it in races after completing a climb (not during, you'd slow down) in the small ring, and accelerate back up to speed. You HAVE to change front rings, as speed goes from 28-50+kmh very quickly. If you stayed in the small chain-ring, you'd quickly run out of gears.
Another example, rode into a 50+kmh headwind for 40k's til the bunch got worn down into using the small front ring. Then turned and accelerated to hold 60+kmh for the next hour ...Prime small to big ring material!
Ha i sound angry but just saying it like it is.