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Old 09-15-15 | 06:21 PM
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RittleLedHiding
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Joined: Sep 2015
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Need some knowledgeable on biking sizing

Hi everyone, I'm kind of new to biking and am looking for some opinions on bike sizing.

Background:
About 5 years ago, I purchased a new 2010 Cannondale Caad9 5 from my LBS. I did not have any knowledge about bikes and they did what I assume was a basic bike fitting for me. The bike was a size 52cm. This was the size on the sticker that was on the frame of the bike. I rode it regularly for a few months and it seemed to fit fine. After the few months, I tore my ACL and was going to have knee surgery, rehab, etc. so I decided to sell it. Cut to 5 years later, earlier this spring, I decided to give biking another shot. I picked up a Sirrus hybrid and within weeks wanted a road bike. After some searching, I found the same bike, same color, same size, same everything in practically brand new condition. The price seemed right, so I bought it. I figured that this was the same size and bike the LBS had me fitted for so it would fit.

I've been riding it 3-4 times a week about 20 miles each time and just can't seem to get really comfortable. I was 26 when I got the first one, and 31 now. I doubt I did any growing since. I also have not put on any extra pounds or anything. I have continued to workout religiously and consider myself to be in good shape. I have been researching online, adjusting the seat, the bars, etc almost a few times a week. Sometimes its my knees, sometimes its my lower back, sometimes, shoulders, and now after some adjustment mainly my butt, and sometimes shoulders. I have also started using bike shorts, and gone clipless.

After the adjustments through research online, it seems like I should have at least gotten a size 54cm bike. I am 5'9.5 and 160 pounds. I included the measurements that I just did for the competitive cyclist online bike fit and the frame geometry I found for the bike. The graph is for a caad9 1 but it should be the same as the 5. Can anyone tell by this information if the bike is too small? Can it be made to fit? The bike came with a 90mm stem. I tried a 110mm and it felt like i was reaching too far. I am currently using a 100mm stem with about 1 inch of spacer on the steerer tube.

A bike fitting by me runs about $375 from what I've found so I'd like that to be a last resort. Sorry for the long post, any help is appreciated. Thanks!

Attached Images
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Caad9 Geo.jpg (48.8 KB, 21 views)
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Measurements.png (58.6 KB, 12 views)
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