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Is a 52cm felt f75 too small for me, im 5'10" with a 32 inch inseam, the standover would be about 291/2". |
Is a 52cm felt f75 too small for me, im 5'10" with a 32 inch inseam, the standover would be about 291/2". Funny thing about sizing a frame based on stand-over, you never ride a bike while standing over it. It鈥檚 a useless number. The numbers assigned by manufacturers to their frames are near irrelevant too. Many people focus on vertical height size, but pay no attention to horizontal length. The pivot of the headset and its distance from the seat tube is vital in properly sizing a rider鈥檚 upper body. If your top tube length is too long, or too short, then the vertical size is pointless I will explain an old theory of bike sizing. No matter who you are there are only a few numbers that matter. The length from your saddle to the pedal at the bottom of its stroke - the distance from your saddle to your handle bar position - the difference in height between your saddle and your handle bar. The first one you should be able to figure out on your current bike. Measure from the top of saddle to top of pedal at its farthest distance. The second measurement is from the tip of your saddle to where your hand would be in the position you ride the most. Pick a consistent spot like the base of your thumb as a pinpoint. The third is top of the top of your saddle to the top of your chosen hand position pinpoint. Now you have the numbers that will always work for you - bike to bike, they will never change. And when you think about it, were talking about the three points where you contact the bike. When you know your particular set of these numbers, it's a simple matter of stem and seat post sizing. And since you can go long on both stem and seat posts, the realm of acceptable frame sizes expands a little bit. In other words I could properly fit you on a 54cm and a 52cm frame, however the smaller bike will most likely have a shorter top tube length and that will affect the pivot point of your forks. Short top tube means a lot of your upper body weight will be over or in front of that pivot point - that can make it a squirrelly ride. Too long of a top tube and you may feel that the bike is not as responsive. The distance in reach and height will feel identical on both the 54 and the 52, but one will feel better to you based on your style of riding. Many years ago research was done into measuring these numbers in relation to height on Cat 3 & 4 racers, and taking the same measurements on pros and Cat 1 riders. The study found that the 3 & 4 riders had numbers that were all over the place while the pro's had numbers that were more consistent with each other. Next time - sophisticated sizing questions like proper crank arm length, and pedal Q-distance. Source(s): 27 year member - Church of the Wheel It does sound a bit small. I'm about the same size and 54-56 cm is usually about right for me. At your height, a 56-58 cm should work for you. I'm 6'3 andhave a 34 inch inseam and I actually fit a 60 cm although I ride a 58 cm Felt because I like the feel of a smaller frame. 52 sm is definitely too small for you. Get fitted at a bike shop. That's the only way to really find out. Simple answer, a 56cm bike with 175mm crank arms should be perfect. See if you can go to your lbs and try one out. That's the only way to know for sure. |
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