ISO 7138:2017 PDF

Name: ISO 7138:2017 — Cross-country skis — Determination of mass and location of balance point
SKU: ISO 7138:2017
Price: 25 EUR
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Cross-country skis — Determination of mass and location of balance point

Название (английский):

ISO 7138:2017

Cross-country skis — Determination of mass and location of balance point

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 23 ноября 2017 г.
Издание:: ISO IS 7138 edition 2 version 1
ICS:: 97.220.20

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Описание (английский):

ISO 7138:2017 specifies laboratory measurement methods for mass and location of the balance point of cross-country skis. If laboratory measurement data are determined and published by manufacturers or other institutions, standard measurement procedures can be used to ensure comparability. ISO 7138:2017 is not the purpose of this document to evaluate the measurement data with regard to their influence on the quality of the ski.

Abstract

Похожие стандарты

Другие стандарты ISO

Overview

ISO 7138:2017 is an international standard that specifies laboratory methods for accurately determining the mass and balance point location of cross-country skis. Developed by the International Organization for Standardization (ISO), this standard aims to ensure consistency and comparability in testing procedures when manufacturers or institutions publish measurement data related to cross-country skis. It does not assess the impact of these measurements on ski performance or quality but focuses strictly on standardized measurement techniques.

Adhering to ISO 7138:2017 enables ski manufacturers, testers, and researchers to maintain reliable, repeatable data that supports equipment classification, product development, and consumer information.

Key Topics

Measurement Scope The standard focuses on two primary measurements:

Mass of the ski: The total weight of a finished ski without accessories.
Balance point location: The position along the ski’s length where it balances horizontally on a knife edge.

Testing Procedures

Use of precise weighing devices with accuracy within 20 grams.
Determination of the balance point using a horizontal knife edge with specified characteristics (radius ≤ 0.25 mm).
Standardized conditioning of skis at (20 ± 2) °C for at least 2 hours before testing to ensure consistency.

Sampling and Size Recommendations Measurements are recommended to be performed on skis of nominal lengths 150 cm, 180 cm, or 200 cm. The chosen size should reflect the ski model’s intended typical use.

Result Expression and Tolerances

Ski mass reported in grams, with ±10% tolerance.
Balance point distance from the ski’s rear end with ±2% tolerance.
Clear documentation including manufacturer details, model, length, serial number, and any deviations from the standard test method must be included in the test report.

Applications

Manufacturers and Designers Utilize ISO 7138:2017 to provide standardized mass and balance data for product specifications, quality control, and design optimization of cross-country skis.

Testing Laboratories Laboratories adopt this method to perform reliable and repeatable testing, ensuring that published data is comparable across different products and manufacturers.

Retail and Consumer Information Transparent mass and balance point data help consumers make informed decisions when selecting cross-country skis suited to their skill level and intended use.

Research and Development Facilitates consistent data collection for research related to ski dynamics, performance analysis, and innovations in ski manufacturing.

Related Standards

ISO/TC 83 – Sports and Other Recreational Equipment ISO 7138:2017 is maintained under the technical committee ISO/TC 83, which governs standards for sporting goods, including snow sports equipment.

Other Ski Equipment Standards Various ISO standards exist for alpine skis, ski bindings, and ski boots that complement cross-country ski testing protocols.

Equipment Testing Methodologies Standards related to environmental conditioning, material testing, and ergonomics in sports equipment provide further context to ISO 7138:2017 applications.

Keywords: ISO 7138:2017, cross-country skis, ski mass measurement, balance point, laboratory testing, ski standards, ski testing procedures, ski equipment quality, ski manufacturing, sports equipment standardization.

ISO 7138:2017 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

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