Page 66 - TBIS_15194-2019_(EN)_3nd
P. 66
TBIS 15194:2019
4.3.7.4.3.2 Stage 2 Frame – Fatigue test with pedalling forces
With the frame and front fork assembly mounted as in 4.3.7.4.3.1. Apply a repeated
downward force of Stage 2 as shown in Table 14 for 100 000 test cycles. The
maximum test frequency shall be maintained as specified in 4.3.1.5.
Table 14 — Forces on pedal-spindle
Force in N
Type city and young adult mountain-bicycle racing-bicycle
trekking bicycle
bicycle
Stage 1 Force, F 1 1000 1000 1200 1100
Stage 2 Force, F 1 1100 1100 1300 1200
A
A-A
B-B
F 7.5°
75 F F
45
L
150 150
A
Rw Height of rigid mount and vertical link
Rc Length of vertical arm (75 mm)
L Length of crank replacement (175 mm)
1 Rigid mount
2 Vertical link
3 Ball-joint
4 Vertical arm
5 tie-rod
6 Centre-line of tie-rod
Figure 21 — Frame: fatigue test with pedalling forces
第 58 頁共 162 頁
