Road Bike Sizing Top Tube Length
Conventional road bikes have seat tube angles within a relatively small range 72 5 74 so if only considering this type of bike you could argue that there only two key dimensions hence some manufacturers have started to use stack and reach to define the relative position of crank and top of head tube.
Road bike sizing top tube length. 2 jenson usa bike fit calculator beta. Felt like i was reaching on the large frame. The only reason the top tube measurement was ever remotely relevant was due to the squareness of steel and then aluminum road frames. More details check their website.
So am looking at buying an upgrade. Most road bikes come in two styles racing road bikes long in the top tube and low at the front for faster riding and sportive road bikes which tend to have shorter top tubes and higher front ends for extra comfort. A person who buys a 25 bike is likely to have a longer upper body than someone who buys a 19 so the larger rider will likely feel cramped by having the same length top tube that puts the handlebars too far away from the. In a given model the height of the top tube would vary but the length of the top tube and every other part of the frame would be same whether the bike was a 19 or a 25.
Will buy the sloping frame and that would put me at just over 53 cm based on your sportive chart. Seat tube length is the traditional method for bike sizing but with all the interesting shapes that mountain bikes come in these days it has become less relevant to finding what size mountain bike you should get. The medium tt is 565mm with the large being 585. The distance from the head tube to the seatpost on a bike with a sloping top tube or.
There s much more to understanding road bike frame sizing than effective top tube length stack and reach and choosing the right size is key to proper fit and handling. They had a top tube and a seat tube that commonly. In amazon bike fit guide you can see they are listing adult road bike sizing chart adult mountain bike sizing chart and kids bike sizing chart. Road bike sizing guide.
I felt the large was too big with a long top tube. Road bike sizing recommendations have changed in the past few years. The most important consideration to make as you decide which frame to go for is the effective top tube length.