Overview
ISO 8706:1990 defines standardized test methods for determining the parking stability of two-wheeled mopeds when supported on a side‑stand or a centre‑stand. The standard gives terms and definitions, specifies test setup and measurement accuracy, and includes an illustrative figure showing the side‑stand contact and imprint. ISO 8706 is aimed at providing repeatable, objective procedures for evaluating moped parking stability.
Key topics and technical requirements
- Scope: Measurement procedures for parking stability of two‑wheeled mopeds on side‑ and centre‑stands.
- Definitions: Terms such as side‑stand, centre‑stand, surface of stationnement (parking surface), surface d’appui de la béquille (stand contact area), pressure spécifique (specific pressure), angle de basculement (tilt angle), and angle de décrochage (release angle).
- Test conditions:
- Vehicle at mass in running order (per ISO 6726) with suspension set per manufacturer instructions.
- Tyres inflated to manufacturer’s maximum recommended pressure.
- Transmission in neutral; parking brakes or parking positions engaged if present.
- Steering locked (tests carried out both left and right if applicable).
- Parking surface:
- Rigid, flat platform aligned with vehicle axes.
- Layer of inelastic material (e.g., modeling paste) of 5 mm ± 0.5 mm thickness applied so the stand leaves a measurable imprint.
- Surface must offer sufficient friction to prevent sliding during inclination.
- Measurements:
- Determine tilt angles by inclining the platform about the X-axis (left/right) and the Y-axis (forward) to find angles of tipping and release.
- Force measurement: use a force sensor embedded in the horizontal parking surface under the stand contact point, with accuracy of ±2.5 N.
- Stand contact area: measured from the imprint left in the inelastic material.
- Specific pressure: calculated by dividing measured force by the stand contact area.
- Perform three measurements per configuration; report the mean when individual results are within 1'.
Practical applications
- Consistent testing of moped design stability during development.
- Safety validation for manufacturers to assess stand designs (side‑stand geometry, centre‑stand load distribution).
- Test procedures for type approval, quality control, and conformity assessment in regulatory or certification contexts.
- Reference for test laboratories establishing repeatable parking stability protocols.
Who should use this standard
- Moped and small motorcycle manufacturers
- Vehicle safety engineers and design teams
- Independent test labs and certification bodies
- Regulatory agencies and technical committees (e.g., ISO/TC 22)
Related standards
Keywords: ISO 8706, two‑wheeled mopeds, parking stability, side‑stand, centre‑stand, test methods, moped stability, parking stability test.