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Z I P P I E G S
V. REAR WHEEL ADJUSTMENTS
1. Wheelbase Adjustment
a) Remove rear wheel.
b) Remove the four inside nuts (A)
located at the top and bottom of
the universal plate (B).
c) Lift the axle plate off and re-position in desired location.
c) Replace and tighten nuts and replace wheel.
d) Repeat on other side of chair.
NOTE:
Adjusting the wheelbase affects the center of gravity. Moving the axle forward will increase your
turning speed and lighten the front end. The further back the axle, the more stable the chair
becomes. In addition, the axle plate may be placed in reverse position to gain additional forward
or back positioning.
Use a torque setting of 100 in.-lbs. when making this adjustment.
2. Wheel Camber Adjustment
a) Loosen top fasteners (C) attaching
the axle plate to the frame.
b) Remove the bottom fasteners (D).
c) Add or subtract camber spacers
(E) for more or less camber.
d) Replace and tighten bottom fasteners. Tighten top fasteners.
NOTE:
Wheel camber adjustment provides greater side-to-side stability due to the increased width and
angle of the wheelbase. The wheel camber adjustment also allows for quicker turning and greater
access to the top of the handrims. Additional spacers may require a longer bolt. Camber washers
and longer bolts are available from your authorized Sunrise supplier. Use a torque setting of 100
in.-lbs. when making this adjustment.
3. Wheelbase Width Adjustment
a) Loosen the nut attached to the axle plate (F).
b) Slide the axle sleeve through the axle plate.
c) Tighten the nut at the other end of the axle sleeve.
d) Repeat on other side of chair. The axle should protrude equal amounts on both sides of
the chair.
NOTE:
Adjusting the wheelbase width allows the rider the option to move the wheels closer or further
away from the hips. It also compensates for camber adjustment and gives the proper wheel spacing
to maximize pushing efficiency. To achieve the most narrow chair possible, axle plates can be
mounted on inside frame tubes. It may be necessary to re-adjust the axle sleeves. Use a torque
setting of 100 in.-lbs. when making this adjustment.
4. Seat Height Adjustment
a) Remove the axle nut (H) on the
inside of the axle plate.
b) Slide the axle assembly (G) with bolts
vertically on the axle plate to the desired height. (Total range 6.5").
c) Replace and tighten axle nuts.
NOTE:
Seat height adjustments allow the rider to adjust the seat for environment, body and mechanical
efficiency. A front caster adjustment should be made to correspond with any change in seat height.
Use a torque setting of 100 in.-lbs. when adjusting rear axle plate fasteners. In addition, the axle
plate may be rotated vertically to gain additional seat height adjustment.
30
31
32
33
34
35
19
30
B
A
31
32
C
D
E
33
F
34
H
G
35
I X .
930377 Rev. F
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