Page 21 - 20190101 part 6 (EN)

5.3 Front fork — Static bending test

Mount the fork according to Annex B and fit a loading attachment and swivel on an axle located in the
axle slots of the blades (see Figure 6). Locate a deflection measuring device over the loading attachment
in order to measure deflection and permanent deformation of the fork perpendicular to the steerer axis
and in the plane of the wheel.

Key
1 loading attachment swivel on axle
2 deflection measuring device
3 rigid mount incorporating head bearings

Figure 6 — Front fork — Static bending test (typical arrangement)

Apply a static, pre-loading force of 100 N to the roller perpendicular to the steerer axis, against the
direction of travel, and in the plane of the wheel. Remove and repeat this loading until a consistent
deflection reading is obtained. Adjust the deflection measuring device to zero.

Increase the static force to F 5 and maintain this force for 1 min, then reduce the force to 100 N and
record any permanent deformation. The forces are given in Ta ble 6.

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