Page 13 - 2016-v.1-Part 9(EN)
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TBIS 4210-9:2016
4.5.3 Test method for stage 2 (static strength test)
A seat-post shall be inserted to the minimum insertion-depth (as specified in TBIS 4210-2:2016,
4.16.2) in a suitable fixture with a representative seat collar and clamped to the manufacturer’s
recommended torque. The seat-post shall be fixed at an angle of 73° from the horizontal, as shown in
Figure 6.
A force of F 4 shall be exerted vertically on the saddle clamp for aduration of 1 min. The displacement at
the loading point shall be constantly monitored during testing. The forces are given in Ta ble 3.
Table 3 — Forces on seat-post
Forces in newtons
City and trekking
Bicycle type bicycles Young adult bicycles Mountain bicycles Racing bicycles
Force, F 4 2 000 1 500 2 000 2 000
Key
1 minimum insertion-depth mark
Figure 6 — Seat-post — Static strength test
7
