Bike Head Tube Sizes

So a 29 inch mtb tube will have the same diameter as a 700c road wheel while a 27 5 inch tube will be the same diameter as a 650b road wheel.

Bike head tube sizes.

Some bikes like the niner air 9 carbon which has a 100mm tall headtube were simply incompatible with rockshox. Head tube angle fork rake or offset fork trail. The headset is the set of components on a bicycle that provides a rotatable interface between the bicycle fork and the head tube of a bicycle frame the tube through which the steerer of the fork passes is called the head tube a typical headset consists of two cups that are pressed into the top and bottom of the headtube. Head tubes can use one of several size standards bicycles.

The head tube of a bicycle is sometimes designated by the fork steerer column it accepts. The headtube angle is the angle at which the head tube is to the ground. Mainly bmx older mountain bike bars. This can lead to confusion since head tube inside diameters are dependent on the headset standard.

For example frames that take one inch 25 4 mm steerer columns can have. This size was also used for older british steel drop bars. This can seem confusing because the head cups do not measure the named standard. Out of the three fork trail arguably tells us the most about how a bicycle will steer.

Stem clamp size grip area size application. Threaded headset sizes are designated by the outer diameter of the steering column. The two bearings at either end of the head tube are what make things work. Mountain bike tyre sizes are usually stated in inches.

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. While you can find a variety of bikes with wheel sizes ranging from 16 to 27 5 inches the most common sizes include 26 inches 27 5 inches 29 inches and 700c. A bike with a steeper head angle has faster steering. 7 8 obsolete british size for steel handlebars common on older 3 speeds.

Finding the right inner tube depends on the size of the tires on your bike. The various standards are generally not interchangeable. Traditionally these have been held in pressed cups but modern bikes also see bearings fitted directly into the frame.