Page 68 - TBIS_15194-2019_(EN)_3nd
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TBIS 15194:2019
fore/aft direction under the applied forces. The maximum test frequency shall be
maintained as specified in 4.3.1.5.
4.3.7.5.3.2 Stage 2 Frame – Fatigue test with horizontal forces
With the frame and front fork assembly mounted as in 4.3.7.5.3.1, Apply cycles of
dynamic, horizontal forces as shown in Tab.15 (stage 2).
Table 15 — Forces and cycles on front fork drop-outs
Type MTB Racing Other type
Forward force Stage 1 1200 600 600 Front wheel driven EPAC
F 2，N
500 Other driving systems
Stage 2 1250 650 650 Front wheel driven EPAC
550 Other driving systems
Rearward force Stage 1 600 600 600 Front wheel driven EPAC
F 3，N 500 Other driving systems
Stage 2 650 650 650 Front wheel driven EPAC
550 Other driving systems
Test cycles, C 1 Stage 1 60 000 120 000
Stage 2 50 000 100 000
1 Free-running guided roller
2 Rigid, pivoted mounting for rear axle attachment point
Figure 22 — Frame: fatigue test with horizontal forces
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