Page 2 - 20190101 part 6 (EN)

TBIS 4210-6:2019

Contents Page

Foreword ........................................................................................................................................................................................... iii
Introduction ........................................................................................................................................................................................ v
1 Scope ................................................................................................................................................................... 1
2 Normative references .................................................................................................................................... 1

3 Terms and definitions ................................................................................................................................... 1
4 Frame test methods ....................................................................................................................................... 1
4.1 Frame — Impact test (falling mass) .......................................................................................................... 1
4.2 Frame and front fork assembly — Impact test (falling frame) ....................................................... 4
4.3 Frame — Fatigue test with pedalling forces ........................................................................................... 6
4.4 Frame — Fatigue test with horizontal forces ........................................................................................ 8
4.5 Frame — Fatigue test with a vertical force .......................................................................................... 10
5 Fork test methods ........................................................................................................................................ 12
5.1 Suspension forks — Tyre-clearance test .............................................................................................. 12
5.2 Suspension forks — Tensile test .............................................................................................................. 12
5.3 Front fork — Static bending test .............................................................................................................. 13
5.4 Front fork — Rearward impact test ........................................................................................................ 14
5.5 Front fork — Bending fatigue test and rearward impact test ...................................................... 17
5.6 Forks intended for use with hub or disc brakes ................................................................................. 18
5.7 Tensile test for a non-welded fork ........................................................................................................... 21
Annex A (normative) Dummy fork characteristics ........................................................................................ 22
Annex B (normative) Fork mounting fixture ................................................................................................... 24
Annex C (informative) Suspension frames — Tyre-clearance test .......................................................... 26

Annex D (normative) Composite frame and composite fork
— Disc brake seat endurance test……………………………………………………….. 28
Annex E (informative) Stiffness measurement of frame .......................................................................... 29

Annex F (normative) Safety test of folding mechanism of frame ............................................................. 32
Annex G (normative) Safety test of composite fork stem (fork steerer) ............................................... 33