Bicycle Mechanics - What Size Crankshaft and Cassette?

Hey guys im ordering a new crankshaft and cassette for my bike, which is a 56cm Cannondale and I'm 6 foot 2 inches and just trying to figure out what size crankshaft and cassette that I need for a 10 speed setup.

Thanks

Don't get a crankshaft for your bike. Get a crank set. :D (Thank you, I'll be here all week). But seriously, it's impossible for us to tell over the internet, but you must have really short legs to be 6'2" on a 56cm frame (I'm 5'11" on a 57cm with short legs), so I'd recommend something around 170mm.

NEED MORE INFO.


What's on the bike now? What are you trying to accomplish?

Yea I had a brain fart I meant crankset. Right now the bike is an empty frame, I've got new wheels coming, and I have the brakes/shifter, handle bars, and all the cables. Im just trying to get a bike that I can do some nice 30 mile rides a few times a week to stay in shape.

NEED MORE INFO.


What's on the bike now? What are you trying to accomplish?

Egg Freaking Zachary!!! You need to look at total leg length and also top length vs. bottom lenght. Some people racing crits like shorter cranks, some doing touring like loner ones.

You need 175 mm crank arms (minimum) 177.5 would be better for your size but harder to find. If you aren't a racer and climb some steep hills go with a 12-25 or 12-27 cassette. If you go with a compact crankset you can go a bit smaller in the rear cassette say 11-23. Crank length depends on femur length, but at 6 foot 2 it's safe to say it's petty long. Crits will require shorter arms due to tight corners and lots of high speed pedaling and cadence changes to keep up with attacks.

Whats your inseam and femur length if you know how to accurately measure

There are lots of choices out there for cranksets in terms of gearing as well as size. What kind of terrain do you want to ride and how strong of a rider are you? If you have cycled before, what gearing did you use and how did you like it? Knowing detailed answers to these will help you choose between a double and triple (which will affect other component choices as well) and what size of cassette to get (tight or wide range).

Im just trying to get a bike that I can do some nice 30 mile rides a few times a week to stay in shape.

Assuming that you're not in great shape (and no idea where the H* you live) I'd say start with a road triple (52-42-30), arm length 170, 172.5, or 175 (it doesn't much matter). Cassette 12-27. As you get better an 11-23 behind the triple will be really nice.

Tiagra 9-speed or 105 10-speed groups are readily available and quite good value for the money.

WAIT! You have the brifters and are only asking now about the rest of the drive train??

Pull your head out and mention what the hell they are! :mad: I don't have time to play guessing games.