B) Saddle Setback or Saddle Fore/Aft Measurement: Make sure the bike is level! This measurement is called Seat tube length (c-c).The second measurement is from the center of the bottom bracket to the top of the seat tube. Seat Tube: This is the vertical bar between your seat and the pedals. However, when a bar is wrapped with thick tape, this makes an accurate measurement more difficult. The first measurement is from the center of the bottom bracket to the center of where the seat tube and top tube connect. Align end of measuring tape on one side and use the ... To find what the reach is on a bike is to measure from the tip of the Saddle to the center of the Handle Bar, or The product of the head tube angle and the fork rake is the ‘trail’. Measure Handlebar width: Measure Stem length: Measure center of the stem binder bolt to the center of the bars. Is there an equivalent measure while the bike is on a center stand and the rear wheel is unloaded/rear suspension fully extended? To promote a rider’s safety and comfort at all times, you must know how to find the MTB that is suitable for you. The frame size is the length of the seat tube from the seat post to the center of the bottom bracket. Bike Measurement Tool. It will show you different sizes of the bike. If you are going to buy a new mountain bike, you will need your body measurement. Some manufacturers specify width as an outside to outside dimension. I've always thought that you measured a bike stem from center to center. Official partners of saddle producers have special tools. However when I measure the stem on my mountain bike that way with my calipers it reads right at 95 mm. Specialized tool has the same idea as my method but looks more professional. For the very bored: MTBR thread about front center. Here is an example of one of them. Shop for Profi Products products at budget-friendly prices. The instructions below explain how to measure a classic road bike. Specialized measurement tool. Center to center, sort of Top tubes are measured ctc, unlike the various goofy concepts on seat tubes. Tech Help: How to Measure... Bar Width: To measure Bar Width use a tape measurer and measure center to center as shown above. Bolt Circle Diameter (BCD) is the diameter of the circle that goes through the center of all of the bolts on your chainring. You measure the cranks, in millimeters (mm), from the center of the holes at each end of the crank. Rise/height: Measure from the center of the handlebar center to the center of the broomstick resting directly above the handlebar. Some people worry about toe overlap. The bottom bracket is the point where your pedals attach to the bike. The stem length on your mountain bike determines how far you must bend at your waist, and how far you must reach to grasp the handlebars. On bicycle chainrings this dimension is usually measured in millimeters. It’s a measurement not often provided by bike manufacturers despite being the most important steering speed … The classic style road bike frame is most commonly found on road, racing, touring, and commuting bikes. Visiting Your Local Bike Shop. It may be easier to use a straight edge or long level to make a right angle from the handlebar to the string to get the most accurate measurement. Measure from the center of the handlebar to the string. This measurement is an important element of how well a mountain bike fits while the rider is seated, and it is influenced by the bike’s seat tube angle and the rider’s saddle height. Record your measurement in both centimeters (cm) and inches (to the nearest half-inch). Front center is a handy measurement to see if a bike will have toe overlap when comparing to a known bike. For handlebars, measure width from center-to-center at the lower section of the drops. While most bike frames utilize only one measurement for sizing, knowing how to locate all three is key to getting the right size bike. It is critical to know the BCD of your crankset when you are selecting a new chainring for your bike…