1. What is Stem Reach?

Stem reach is the horizontal distance from the center of the steering tube to the center of the handlebar. It's a crucial measurement in bike fitting that affects your riding position and comfort.

2. How Does the Calculator Work?

The calculator uses the stem reach equation:

Where:

• \( Stem\ Length \) — Length of the stem in millimeters
• \( Angle \) — Angle of the stem in degrees

Explanation: The equation calculates the horizontal component of the stem length based on its angle. A steeper angle reduces the effective reach.

3. Importance of Stem Reach Calculation

Details: Proper stem reach affects handling, comfort, and aerodynamics. It determines how stretched out you are on the bike and influences weight distribution.

4. Using the Calculator

Tips: Enter stem length in millimeters and angle in degrees (typically between 0-90°). All values must be valid (length > 0, angle between 0-90).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical stem reach range?
A: Most road bikes have stem reaches between 70-120mm, but this varies based on bike type and rider preference.

Q2: How does stem angle affect reach?
A: A higher positive angle (stem pointing upward) decreases effective reach, while a negative angle increases it.

Q3: What's the difference between reach and length?
A: Length is the actual stem measurement, while reach is its horizontal component that affects your position.

Q4: How important is stem reach for bike fit?
A: Extremely important as it affects your upper body position, comfort, and control of the bike.

Q5: Should I consider other factors with stem reach?
A: Yes, also consider stack height, handlebar width, and your overall bike fit when selecting a stem.