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Help with Cannondale six series sizing please.

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Help with Cannondale six series sizing please.

Old 03-31-09, 01:00 AM
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slothers
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Help with Cannondale six series sizing please.

Hi everyone, I was hoping that I could get some help here in regards to sizing I need.

I just recently went to a bike shop and I'm looking to purchase a cannondale six carbon 3. It's my first bike so I'm not too familiar with the gearing and sizing. They didn't have any cannondale 58 or 60 frames on hand so I had to settle with demo-ing a Trek 58. The trek felt too cramped near the top and a sales associate recommended I purchase a 60 after he saw me ride it.

But one of the other associates said the cannondale frames run larger than the Trek's and I should still get a 58. I did the fit calculator on wrench science and they're advising to go for a 56-58. What do you guys think? I'm worried that the sizing would be too similar to Trek's because the Trek did seem too small.

My dimensions are:
182.88 cm (72 inches) height.
154.94 cm (61 inches) height to sternum
86.36 cm (34 inches) inseam
68.58 cm (27 inches) arm length to center palm

Any help would be greatly appreciated ... I'm getting an awesome bike but I'm completely new to this. Thanks in advance.
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Old 03-31-09, 01:48 AM
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biggins113
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cannondale sizing

hey,
i'm riding a cannondale supersix and am 6'1" and riding a 60cm frame. i think for your measurements a 58cm would be just about right.
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Old 03-31-09, 04:02 AM
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roadwarrior
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I sell these and do fittings...but I don't have all my fitting data handy...

Based on your numbers, your torso is slightly longer than average (not much) but that generally makes you a good candidate for Cannondale. In other words, you body is just under 47% leg length, and 47.5% is the center of the bell curve.

I'd try a 58. You may need a slightly longer stem. My fit calculator figures top tube length and then stem, but it's not here where I am now. They'd probably put a 110 mm stem on the bike at the factory and a 120 might work better. Because your legs are slightly shorter than average for your height, I'd look at the smaller frame.

I will tell you that this frame (especially the entry version, the Six Carbon 6) is flying out of the store. The price is great for a carbon frame one step below the best frame they make.

This is all incumbent upon your numbers being accurate. And unless you are buying this bike "pre-owned" (which, since it's so new I have a hard time imagining) the shop ought to be able to measure you and check that against frame geometry.

Trek measures from the center of the bb to the top of the tt. Cannnodale to the top of the seat tube. That's the biggest reason why they won't feel the same.

Hope that helps.

Last edited by roadwarrior; 03-31-09 at 04:14 AM.
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Old 03-31-09, 04:16 AM
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Tariq08
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i'm an inch shorter than you but my inseam is an inch taller and i ride a 58 which is probably a little big for me

i say go for the 58, if you are too cramped near the top a longer stem might fix that
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Old 03-31-09, 03:55 PM
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Awesome thank you all for the feedback. I'm going to purchase the 58. And you're right roadwarrior, it's definitely a sweet bike for the price. I was able to get it for $2600 new. It's funny I went with the intent of buying an aluminum six 5. Then it went to a carbon six five, but since I read more about the BB30 on the six 3 carbon, I had to go for it. Thanks again for all the help, I really appreciate your time and effort in helping a random like me.
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