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TRAVELER usage instructions
M6 axle fixing screw with
washer
Figure 84: M6 axle fixing screw of caster wheel axle
(view from outer side of product)
M6 nut with washer
Figure 85: M6 caster wheel axle nut (view from inner
side of product)
Aluminium axle
Figure 86: Caster wheel with aluminium axle
Spacer
Figure 87: Spacer on the caster wheel
When mounting the caster wheel, position
the caster wheel with its spacers in the caster
wheel fork, hold it in position and insert the M6
axle fixing screw with its washer from the out-
side of the product to the inside through the
axle of the caster wheel. Now attach the
washer and the M6 nut (AF 10 mm) from the
other side. The tightening torque of the axle fix-
ing screws (AF 4 mm) is 7 Nm.
23.2 Caster wheels flapping
Uncontrolled swivelling backwards and for-
wards of the caster wheels around their axes
on the caster fork (while moving) is known as
"fluttering".
If the caster wheels start to flutter, imme-
diately reduce your speed to prevent the caster
wheels from jamming sideways and therefore
reduce your risk of falling.
The speed limit at which caster wheel flutter-
ing starts, is reduced by:
increasing size of the caster wheels
increase weight of the caster wheels
falling load on the caster wheels
decreasing caster length of caster wheels
The following options are available to counter-
act caster fluttering generally:
Fluttering can be reduced by reducing the
caster wheel diameter. This means in-
stalling a small caster wheel in a different
wheel position in the caster fork (seat
height therefore does not change) would
be one way of reducing fluttering. How-
ever, please note that using a smaller
caster wheel makes it more difficult to
overcome obstacles and makes tipping
necessary more often. The smaller the
caster wheel is, the more driving skill is re-
quired.
Another option for reducing fluttering is to
use a lighter caster wheel with the same
diameter or, as described above, with a
smaller diameter.
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