- 1
The center of a wheel nut constitutes the center of the wheel's radius.Wheel and Cog image by pg003 from Fotolia.com
Secure the bicycle in the bike stand. Measure the distance in millimeters of the center of the radius of each wheel from the floor. Adjust the bicycle stand until the center of both wheels are an equal distance from the floor. - 2
The seat tube is shown behind the rider's leg running vertically up to the seat stem and seat.riding bicycle image by apeschi from Fotolia.com
Place the bubble level vertically on the right or left side of the seat tube. Adjust the bike stand until the bubble level indicates the bicycle is resting precisely vertical in the bike stand. - 3
A pedal crank rotates around the center of the radius of the bottom bracket.retro bike image by charles taylor from Fotolia.com
Measure and record the distance from the center of the radius of the bottom bracket to the floor. Place the bubble level on the side of the tape and ensure the tape is running precisely vertical from the center of the radius of the bottom bracket to the floor. - 4). Measure and record the distance from the center of the radius of the head tube to the floor. Place the bubble level on the side of the tape and be certain the tape is vertical from the center of the radius of the head tube to the floor.
- 5). Subtract the distance from the center of the bottom bracket to the floor from the distance of the center of the radius of the head tube to the floor to determine the stack height.
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