Page 10 - 20190101 part 6 (EN)

TBIS 4210-6:2019
Rest a striker of mass 22,5 kg on the roller in the fork dropouts or on the rounded end of the dummy fork
and measure the wheelbase. Raise the striker to a height of h 1 above the low-mass roller and release it
to strike the roller or the steel bar at a point in line with the wheel centres and against the direction of
the fork rake or rake of the bar. The drop heights are given in Ta ble 1. The striker will bounce and this is
normal. When the striker has come to rest on the roller or dummy fork, measure the wheelbase again.

If the frame meets the requirement as specified in TBIS 4210-2:2017, 4.8.2, and conduct stage 2 of the
test with the assembly in the same mountings.

If the fork fails, the frame shall be tested with a dummy fork.

NOTE See TBIS 4210-3:2016, Annex B.

4.1.2.2 Stage 2 Static energy absorption

With the frame and front fork assembly mounted as in 4.1.2.1 apply a progressively increasing force
in the same position and direction as in 4.1.2.1, until the energy is given in Table 1. The displacement
rate is 15 mm/min

2