HP Velotechnik trikes - Manual (Page 64)

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Wheel alignment
Measuring toe-setting on Scorpion,
Scorpion fx, Gekko, Gekko fx and
Gekko fx 26
Both front wheels should be parallel to each
other, viewed from above the tricycle, com-
pare picture below.
The condition of the front ends of the front
wheels being closer together than the rear
ends of the front wheels (b
v
smaller than b
h
) is
called toe-in, the condition of the front ends
of the front wheels being further apart than
the rear ends of the front wheels (b
v
larger
than b
h
) is called toe-out. The measures are
taken at wheel axle height on the rim side-
walls.
If the front wheel alignment is incorrect, you
will suffer excessive tire wear and increased
tire drag. Check your front wheel alignment
regularly. The proper tolerance on toe-in is
0–2 mm (1/16“). For correct measuring prop-
erly trued wheels are required.
To check the toe setting, turn the handlebars
into the neutral position, so that the wheels
are aligned straight forward. Measure the dis-
tance between the front inner or outer edges
of the front wheel rims and the rear inner or
outer edges of the front wheel rims 25 cm
(10“) above the ground.
The distance between the front edges b
v
must
be 0–2 mm (1/16“) smaller than the distance
between the rear edges b
h
.
It is important to measure the distances at the
same height of 25 cm (10“) above the ground,
as the front wheel are not exactly perpendicu-
lar to the ground, viewed from the front of
the tricycle. Measuring at varying heights re-
sults in measuring errors.
Measuring toe setting on Scorpion fs,
Scorpion fs 26 /Enduro /S-Pedelec,
Scorpion plus 20 and Scorpion plus 26
The distance between the front edges on full
suspension tricycles b
v
must be 0–2 mm
(1/16“) smaller than the distance between the
rear edges b
h
. If toe-in is checked in unloaded
condition, the proper tolerance is 2–4 mm
(1/16”–1/8”). Then, the correct value is
reached under normal riding conditions with
the front wheels deflected by ca. 20 mm.
The adjusting procedure in other respects is
the same as for models without front suspen-
sion.
Adjusting toe setting
The front wheels are held by suspension
struts which can turn at the ends of the main
frame. The suspension struts are connected
by tie rods to the handlebar stem.
The rod ends consist of ball-and-socket bear-
ings that can be screwed in or out of the tie-
rod for length adjustment. Length adjustment
is done at the inner tie-rod end, at the con-