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Competitive Cyclist Fit Calculator

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Competitive Cyclist Fit Calculator

Old 09-22-10, 07:00 PM
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Schmadley
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Competitive Cyclist Fit Calculator

Has anyone had any experience with using the CC Fit Calculator?

How accurate is it?

How does it work across differing brands where they have different geometries - eg those frames with a (fairly) straight top tube (should calculate the fit quite well I think) to those frames that are 'ultra' compact (and all those in between)?

Are there better "home fit' products out there?

Thanks...
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Old 09-22-10, 07:05 PM
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NEO Dan
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Just do it™

You are way over thinking it. I found and fixed my fit using that calculator.
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Old 09-22-10, 07:22 PM
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Originally Posted by NEO Dan View Post
Just do it™

You are way over thinking it. I found and fixed my fit using that calculator.
+1 Yes. If you are buying an inexpensive bike on-line, just use it and make adjustmenst with stem, seatpot, saddle, etc. If you are buying an expensive bike, go to a LBS that knows more than you do and get it from them.
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Old 09-22-10, 07:31 PM
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CC was way off for me put me on much too small/short reach a bike for me. Wrench science was spot on though.
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Old 09-22-10, 07:33 PM
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I used it and when I went to do a fitting the only adjustment they made was to the saddle angle and stem. If you can get someone to help you measure.

I think fit also has a lot to do with your flexibility. So if you and I are exactly the same but you're more flexible your fitting will be diff than mine.
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Old 09-22-10, 07:33 PM
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Start here. The Zen of Bike Fit
https://www.peterwhitecycles.com/fitting.htm
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Old 09-22-10, 07:37 PM
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CC Fit was great. Told me I needed a 59 seat tube and 55.6 top tube. Didn't tell me where to find such a bike, though.
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Old 09-22-10, 07:38 PM
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I used the CC calculator for my first bike, and was fitted at the LBS for the 2nd bike.

The CC calculator was spot on.
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Old 09-22-10, 07:41 PM
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If you have no idea what frame will work for you then that calculator gets you in the ball park and it provides three different fits so you can match what you need to one of the fits they list.
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Old 09-22-10, 08:16 PM
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The Eddy fit is for me and spot on.
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Old 09-22-10, 08:20 PM
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I have always thought that the CC Fit Calculator was some sort of baseline establishment of a fitting in the absence of a proper LBS fitter. I believe it is a great starting point when shopping for your bike. I do not believe it should be taken as gospel.
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Old 09-22-10, 08:32 PM
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The Custom Bicycle, by Kolin and de la Rosa, worked for me. Then again, the book was published in 1979. Then again, my frame was built around 1979. Uh, where was I going with this?

Oh yeah . . . the CC Fit Calculator. The "Eddy Fit" is close to what I ride (and have ridden for many years), so it works if you consider that any fit calculator is just a starting point. It is the "fine tuning" after the initial fitting that can make the difference in comfort/performance.
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Old 09-22-10, 09:42 PM
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I tried CC out of curiosity then ignored it. Not because I thought it was wrong, but because just going by the numbers was boring. I dialed my fit in through trial-and-error and a lot of reading (Peter White, Steve Hogg, etc.). When you are actively riding a bike, your body tells you a lot about what is working and what isn't. Listen to it.
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Old 09-23-10, 10:25 AM
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Originally Posted by SteelCan View Post
Start here. The Zen of Bike Fit
https://www.peterwhitecycles.com/fitting.htm
^^This.

Peter White knows his stuff.
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Old 09-23-10, 10:38 AM
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I tried it once measuring myself, and that was horrible. Then I got my wife to take the measurements for me, which came up with more realistic numbers, but I'm still oddly proportioned enough that no stock frame out there has the specs recommended by the CC fit calculator. In the end, my actually bike fit (saddle position, cockpit length, etc.) wasn't really what was recommended either.

As for brands, the calculator does (edit) not (/edit) recommend a specific "size" of frame, but rather individual specs. You have to do the second part of your homework by comparing geometries to figure out which frame(s) will meet your needs.
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Old 09-24-10, 01:30 AM
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I use the measurement and setup as my starting point. From then on, I follow what my body says. If I am not comfortable with it, then I will adjust accordingly. Overall, it's a very good starting point.
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Old 09-24-10, 01:37 AM
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I swear by it since I'm a short legged, long torso rider. I run a 55cm frame with a 130mm stem and little seat post showing. Fit needs to be dead on for me.
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Old 09-24-10, 03:04 AM
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Thanks for all the tips and information everyone. I'll do a measure-up this weekend and see how it measures up.
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Old 09-24-10, 07:36 AM
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I thnk that the CC fit calculator is nearly worthless. For one thing, it suggest several ranges of TT length, but fails to mention seat tube angle. You can't figure the frame reach without the seat tube angle. It also fails to list a specific head tube height, that would include the headset.

Each degree that the STA is steeper increases the frame reach by about 1cm. A 55cm TT with a 73 degree STA would have the same reach as a 54cm TT with a 74 degree STA.
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Old 09-24-10, 08:08 AM
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Originally Posted by DaveSSS View Post
I thnk that the CC fit calculator is nearly worthless. For one thing, it suggest several ranges of TT length, but fails to mention seat tube angle. You can't figure the frame reach without the seat tube angle. It also fails to list a specific head tube height, that would include the headset.

Each degree that the STA is steeper increases the frame reach by about 1cm. A 55cm TT with a 73 degree STA would have the same reach as a 54cm TT with a 74 degree STA.
Glad you mentioned the STA issue. I haven't found any online calculators that mention STA. On the other hand, I still think the CC fit or Wrench Science is a good place to start when buying a bike, at least giving you a ballpark of what TT length to look for. If you're of average height, say 5'9" to 6', the calculator will probably work better for you than if you fall outside the "normal" range.
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Old 09-24-10, 08:27 AM
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Originally Posted by Dr. Banzai View Post
I swear by it since I'm a short legged, long torso rider. I run a 55cm frame with a 130mm stem and little seat post showing. Fit needs to be dead on for me.
I often say custom frames aren't needed for most people but you are one of the few where it's ideal.
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Old 09-24-10, 08:36 AM
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Originally Posted by akansaskid View Post
CC Fit was great. Told me I needed a 59 seat tube and 55.6 top tube. Didn't tell me where to find such a bike, though.
Seat tube length isn't relevant.
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Old 09-24-10, 08:39 AM
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Originally Posted by StanSeven View Post
I often say custom frames aren't needed for most people but you are one of the few where it's ideal.
I found one where the geometry looked so wrong but turned out so right.
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Old 09-24-10, 09:20 AM
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Originally Posted by Dr. Banzai View Post
I found one where the geometry looked so wrong but turned out so right.
Which frame is this? I have the same problem as you, although not as bad. I'm on a 54cm frame with 110mm stem and the saddle slammed back on a 25mm setback seatpost. My short inseam wants a 50 or 52, but my long femurs, long torso, and long arms want a relaxed seat tube angle and 55cm top tube.
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Old 09-24-10, 12:18 PM
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Originally Posted by Spring Water View Post
Seat tube length isn't relevant.
Right. And I bought a 56 bike. Looks like crap, though, with miles of seat post showing and a 26 deg stem to get the bars high enough. Fits great, looks cartoonish. For some, a standard frame will always be disappointing, even if only aesthetically.
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