Corsaire

If so, how tall are you and what's your inseam measurements?

I'm trying to see if either 50 or 52 would fit me better. I'm 5'8", 30 inch inseam, 22 inch arm reach.

Thanks for the feedback, hopefully it'll help me get a good perspective.

Corsaire

ROJA

You need to get measured, but at a glance you are more in the range for a 54. I just ordered a Six13 in a 56cm frame and I'm 5'9" with a 30" inseam (pants) or 33" inseam (measured for bike fit).

Good luck.

Corsaire

I want the smallest size frame I can get away with. 54 would be too big.

Corsaire

ROJA

Just curious, if you are spending $2500+ on a bike, why don't you get the size that fits you best? I'm almost positive that it won't be a 50cm bike unless you have very unusual proportions.

Al1943

Depends on how the frame is measured, c-t or c-c. Makes a huge difference.

Al

ROJA

A 50 cm Six13 is 48 cm from the center of the bottom bracket to the top of the seat tube, measured along the seat tube. Is that c-t???

voltman

Assuming 30" is your cycling inseam and your arms are 22 inches long, you'd probably want a 52 with a shorter stem.

Corsaire

I just went to the LBS and took some actual measurements off the 50 & 52 sizes. On the 52 (equivalent to the 53cm semi sloping frame of the Bianchi I currently have) I'd need a 110 or 120mm stem, and the 50 would fit me also but I'd need a 130mm stem.
Which would handle better and be more efficient as well as lighter for the climbson fast pace club rides? This Cannondale would my "kick arse" bike, not necessarily for long haul rides.

Corsaire

nitropowered

The smaller frame would give you more saddle to bar drop and would be stiffer and more nimble since the frame is smaller. You may also get toe overlap.

I would get the 50

voltman

How flexible are you?

Corsaire

I stretch a lot, so I'm flexible (not like a gymnast of course) but I can easily put my hands flat on the floor w/o bending my knees.

Corsaire

ROJA

In general, does less flexibility argue in favor of the bigger frame because it would result in less drop (assuming stand-over height is sufficient)?

Corsaire

Is getting a bit of toe overlap a bad thing ?

Corsaire

Dubbayoo

You want the 50, 52cm in a sloping tube is too big. I got a 50cm Flyte but I could have gone 52.

Corsaire

No, you got it wrong. We're talking Cannondales here, and theyare full size frames, not slopings. The sloping I was referring to is my current steel Bianchi.

Corsaire

miked528

I'm 5'7 1/2 with 23' arms and 30 inch inseam. My Fuji is a 52 and is perfect for me. Here's a web site that will be very helpful in picking a peerfect size bike.

www.competitivecyclist.com

woodcycl

I am 5' 6.5" tall with a 28" inseam. I ride a 53cm Six13 TeamOne. However, I would've been fine on a 52cm as well.

Corsaire

Sxi13 has not 53cm size, only the ones below, perhaps you meant 54cm, but could've fit a 52 also

Six13 sizes: 48, 50, 52, 54, 56, 58, 60, 63 cm

I could fit a 54 also, but I'm starting to realize I could got ideally 52, but aggressively a 50.

Corsaire

FIVE ONE SIX

i would go with the 50. i'm 5'7" with a 29.3" inseam, and after a few fittings i was going to go with the CAAD8 in a 50 last year, and the CAAD8's and Six13's have the exact same frame measurements...

LA_Rider

I’m 5’9” with a 32” cycling inseam and ride a 54 CAAD8.

I’m going to be changing to a 52cm for the shorter head tube / lower drop.

I also think stems of 110 and up handle better than a long TT and a short stem.

Toe overlap really only happens when going in small circles, not in actual riding.

fwiw; Igor Astarloa of Barloworld is 5’7” and rides a 50cm.

LA_Rider

PS: Ryan Cox (Barloworld) is 5'11" and rides a 54.

This is his bike.

roadwarrior

There's a 2cm top tube drop which is why they (see the measuring chart) measure like they do.

Besides, I was told in another thread not to worry about it....just stand over the frame and if you have an inch or so, that's it...then just fiddle with the seat until it feels right...

Go with the 52...the 50 will be too small on a Cannondale. Based on what you said. I added an inch as the measurement should be from the bottom of your foot to where you'd hit the seat...not your inseam, like you'd buy pants.

roadwarrior

Somehow, I think that he goes away from the carbon SI cranks to the Hollowgram SI cranks for races...Hollograms are lighter.

Corsaire

The difference between the 50 & 52 is exactly 0.375 inch, being the 52 "bigger" by that much (barely 1cm) all around

Corsaire

corny

I would say 52, I am 5 feet 7 inches, 30" inseam and have flipped the stem with a fairly high seat but found an ace fit.