Road Bike Top Tube Geometry

The head tube has two key measurements that will influence a bikes handling. Where the top tube is horizontal the effective top tube and actual top tube will be identical. Cyclocross for the road so has a slightly different geometry bb height etc while the first one is a standard road bike in fact a woman s bike.

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The second bike is a trek crossrip which is a commuter cross bike i e.

Road bike top tube geometry. When it comes to the top tube the angle of the head tube and seat tube will have an impact if a bike has a 55cm top tube and a 70º angle and another has a 73 5º angle effectively the. Actual top tube length. A longer top tube has you more stretched out on the bike all other things being equal. It s important to note that bicycle geometry is different for each bike size given our varying heights offer different body proportions.

At the bottom of each geometry feature i have incorporated a comparison between a road cyclocross and touring bike with 57cm top tube length. The angle and the length. In this choosing the correct size road bike geometry explained guide we look to assist you in determining what size of bike is right for you. The head tube angle refers to the angle of the head tube to the ground and will commonly be described as either slack or steep.

This will give you a racier more aerodynamic position on a road bike possibly at the expense of all day comfort. Top tube length is the horizontal measurement from the steerer tube to the seatpost. The 53cm sized frame s top tube is 558mm matches more closely my current 56cm sized frame with a 560mm top tube. A slack head tube angle requires more effort to steer but performs better at slow speeds.

Semi compact geometry is similar to a compact with the only difference being that the sloping angle of the top tube is not as great so the standover clearance is reduced and the effective top. The top tube along with the seat tube is often the first item to be decided by the designer for a racing bike usually riders like to have a very low handlebar or hand position. Sportives bikes have shorter top tubes than race bikes. Batman apr 19 14 at 19 28.

A steep head tube angle is found on performance road race requiring. 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. A size medium sportive bike may have 545mm top tube while an equivalent road race bike will be 5mm 10mm longer. Top tube length as.