I saw the sticky thread about measuring yourself. And i'm going to do it. But here is my question about sizing anyway. I have a jamis sattelite sport that's 51cm. It feels a little high if I'm standing there with the bar touching my balls, but the bike is perfectly and enjoyably rideable. I'm looking into the Dawes SST 1 available at bikes direct in the sizes 49cm and 52cm. So the concern I have is, will the 49cm be too small? Will the 52 be too big. I went to a roadie shop today because I had to get a freewheel for a mountin bike. So I check out their bikes. Trek Domanes that post 56cm look a little smaller than my 51cm jamis. I tried a 49cm and a 52cm version of Trek's take on a cross bike (I actually liked that bike alot). Visually, they looked smaller than my Jamis, but not appreciably bigger or smaller than each other. Then when I threw my leg over, they both felt like the Jamis (close but not intimate with my nutty friends) and both seemed like they would be ridable bikes.
So - how big of a difference is there between a 49cm and 52cm? If a 51cm steel Jamis road bike gives an enjoyable ride but sniff at the crotch on the stand over, should i be more afraid of the 52cm being to big or the 49 cm being too small.
the bike in question: Save Up to 60% Off Road Bikes | Track Bikes | Fixed Gear | Single Speed Bicycles | Dawes SST singlespeed bicycles | Save up to 60% off list prices