Page 87 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

4.3.9.4.2.2 Test method

Apply a force of 2 300 N distributed symmetrically to both ends of the axle for a
period of 1 min in the direction of the removal of the front and rear wheel
independently.

4.3.9.4.3 Front wheel retention – Retention devices unsecured
EPAC shall be equipped with secondary retention system that retains the front wheel
in the dropouts when the primary retention system is in the open (unlocked)

position.

Where threaded axles and nuts are fitted, and the nuts are unscrewed by at least
360° from the finger tight condition and the brake system disconnected or released,
the wheel shall not detach from the front fork when a force of 100 N is applied

radially outwards, in line with the drop-out slots, and maintained for 1 min. Where
quick-release is fitted, and the quick-release lever is fully open and the brake system
is disconnected or released, the wheel shall not detach from the front fork when a

force of 100 N is applied to the wheel radially outwards, in line with the drop-out
slots, and maintained for 1 min.
4.3.9.5 Wheels – Quick-release devices – Operating features

Any quick-release device shall have the following operating features:
a) it shall be adjustable to allow setting for tightness;
b) its form and marking shall clearly indicate whether the device is in the open or
locked position;
c) if adjustable by a lever, the force required to close a properly set lever shall not

exceed 200 N and, at this closing force there shall be no permanent deformation of
the quick-release device;
d) the releasing force of the clamping device when closed shall not be less than 50

N;

e) if operated by a lever, the quick-release device shall withstand without fracture
or permanent deformation a closing force of not less than 250 N applied with the
adjustment set to prevent closure at this force;

f) the wheel retention with the quick-release device in the clamped position shall
be in accordance with 4.3.9.4.2, 4.3.9.4.3;

g) the front wheel retention with the quick-release device in the open position shall
be in accordance with 4.3.9.4.3.

If applied to a lever, the forces specified in c), d), and e) shall be applied 5 mm from
the tip end of the lever.

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