Finding the "center" of a ski typically refers to locating its cord center, which, according to the provided reference, is defined as the mid-point between the straight line measurement from tip to tail.
Understanding the cord center is useful for technical analysis of ski shape but is distinct from the recommended boot center mark used for mounting bindings, which is usually indicated on the ski sidewall or topsheet.
What is the Cord Center?
The cord center is a geometric reference point based purely on the ski's total length when measured end-to-end in a straight line, ignoring any curvature (rocker or camber). Think of it like stretching a string taut from the very tip to the very tail of the ski; the exact middle point on that string corresponds to the cord center on the ski itself.
How to Find the Cord Center of a Ski
Finding the cord center is a straightforward process based on the definition provided. Here's a simple method:
- Lay the Ski Flat: Place the ski on a flat, hard surface like a floor or workbench.
- Measure the Straight Length: Use a long, flexible measuring tape or a piece of non-stretchy string. Place one end exactly at the tip of the ski and stretch it taut in a straight line all the way to the tail. This measurement is the ski's "cord length."
- Find the Mid-Point: Note the total cord length you measured. Divide this length by two.
- Mark the Center: Starting from either the tip or the tail (be consistent!), measure along the taut measuring tape (or string) the distance you calculated in the previous step. Mark this point on the ski.
This mark represents the cord center of the ski as defined by the measurement from tip to tail.
Here's a quick summary:
| Measurement | Method | Result |
|---|---|---|
| Straight line from tip to tail (Cord Length) | Stretch tape/string taut from tip to tail. | Total cord length |
| Mid-point of Cord Length | Divide total cord length by 2. | Cord Center Location |
Step-by-Step Guide
- Place your ski on a level surface.
- Get a measuring tape or string long enough to span the entire length of the ski.
- Align the 'zero' mark of your measuring tape with the very tip of the ski.
- Keeping the tape taut and straight, extend it to the very tail of the ski. Read the total length.
- Divide this total length by two. For example, if the cord length is 180 cm, the mid-point is 90 cm.
- Measure from either the tip or the tail along the straight line created by the tape/string to the calculated mid-point (e.g., 90 cm).
- Mark this spot on the ski. That's the cord center.
It's important to remember that this cord center is a technical measurement and may not align with the ski's natural balance point or the recommended boot center mark for mounting bindings. Always refer to the manufacturer's recommended mounting point when installing bindings.
