Whirlwind RoughRider User Manual page 38

Wheelchair
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Rear Wheel Rubs on the Side Frame
Cause 1: Your RoughRider will pull to one side if the axle bolt is loose. If the axle bolt is loose in
the axle block, the weight of the rider on the seat will cause the wheels to lean in at the top. If they
lean far enough, the wheel might rub against the side frame, friction will act like a brake on the
wheel and cause your RoughRider to turn toward that side.
Solution: Tighten the axle bolt. Replace any missing washers or
nuts. If the hole in the axle socket ha
loose, move your wheels to a different axle position.
Cause 2: The wheel is bent. If the wheel rim is bent, you can usually fix
it by adjusting the spokes.
Solution: Adjust and tighten the spokes as shown in Spokes section. If
the wheel rim is bent a lot, you must straighten it before adjusting the
spokes.
Cause 3: The axle block is bent relative to the frame.
Solution: Re-align axle block as shown in Rear Axle is Out of Alignment section.
Frame is Misaligned
If one of the side frames leans inward while you are riding the chair, the chair may turn away from
that side. The side frame of the chair leans inward when the ends of the seat tube on the same side
of the chair are bent inward.
Solution: This repair requires two people. Clamp the square tube (cross tube) in a vise . Slide two
long (50-80cm) strong, thick- walled tubes over the ends of the bent seat tube until they are both
touching the square tube. At the same time, both people should carefully push (or pull) in the
opposite direction that the seat tube bent. Continue until the seat tube is straight. Hammering the
ends of the seat tube outward can correct the problem. If the side frame bends inward again, get a
good welder to re-align the entire X-brace and reinforce both seat tubes by welding in reinforcing
rods under the seat tube.
page 40
s become too large and too
Reinforcement Welded
Under Seat Tube
USER MANUAL
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