Place the end of a tape measure at the exact center point of the gear crank (the metal post that runs through the center of the bike’s chain sprocket). Then run the tape measure up to the top of the tube. Measure to the point where the tube ends. This will give you the length of the seat tube which is the frame size.
What size is a BMX frame?
- BMX Frame Sizing. To be competitive proper sizing is important. BMX sizing is referred to by names and a top tube length. In addition to the frame size wheel sizes also vary. The Micro Mini and Mini sizes will have 20 x 1 1/8″ tires, Junior and Expert models 20 x 1 3/8″, and Pro series 20 x 1.75.
How do I determine bike frame size?
Most manufacturers now measure the frame from the centre of the crank axle, to the top of the seat tube. Most road bikes are measured in centimetres (cm), whereas mountain bikes are generally measured using inches (in). Kids’ bikes are measured by wheel size rather than frame size.
What does bike frame size mean?
Frame size generally refers to frame height, the length of the seat tube from the bottom bracket (crank bearing) to the top tube.
What does 52cm bike mean?
50 – 52 ( Small ) 5’5″ – 5’7″ 160 – 165. 52 – 54 (Small – Medium)
What does 30cm bike mean?
Every kid is different, but here’s a general size guide across ages: 2-4 years 30cm /12in. 4-6 years 40cm/16in. 6-8 years 50cm/20in. 8-11 years 60cm/24in.
How do I measure my body frame?
Body frame size is determined by a person’s wrist circumference in relation to their height. For example, a man whose height is over 5′ 5″ and wrist is 6″ would fall into the small-boned category.
What does a 15 inch bike frame mean?
As you can see from the chart, mountain bike frames are measured in inches. Sizing goes from about 13-15 inches, which is what someone on the small size might ride, up to 23 inches and above, which is best-suited to a taller rider. Note that mountain bike frames are generally smaller than road bike frames.
What does 19 inch bike frame mean?
Generally 19″ is the equivalent of a Large frame, and will fit someone around 6 feet tall.
Is 52cm bike small?
It depends on how the bike is measured. If the 52 is a level top tube and actual seat tube length, I would say no, the bike is too small. If the bike is a sloping top tube and the actual seat tube is 52, then maybe. If the 52 is a virtual size, and the actual seat tube is less say 48 or whatever, then no.