The document summarizes the NewArcTM patented dual axis wheel straightening process. It involves applying alternating straightening forces from two hydraulic rams to the wheel in a massaging action, allowing over 6,000 lbs of combined pressure to be applied without exceeding 2,000 lbs from each ram individually. This process straightens wheels with heavy damage in about 30 minutes while being less stressful on the wheel compared to other straightening methods.

1. The photos on the following pages explain the patented NewArc™ method of wheel
straightening. Our machine is the only one capable of this process, which requires
less heat application and is much less stressful on the damaged area of the wheel.
This unique dual axis method is the only one recognized by the Society of Automotive
Engineers and is exclusive to all users of the NewArc™ wheel straightening machine.
TM

2. This very expensive wheel sustained
heavy damage from a severe impact, the
depth of which was nearly ¾”.
The next few slides will illustrate how
the dual axis straightening process was
able to straighten this wheel to SAE
performance standards for new wheels.
This demonstration will reveal how this
patented method is capable of achieving
over 6,000 lbs of combined straightening
pressure without ever applying that
great a force from either axis.
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3. After heating the wheel to SAE accepted
standards, two hydraulic rams were set
up to distribute simultaneous and
alternating straightening forces over the
widest area possible. This shared
pressure application imparts a
massaging action to the damaged area
and minimizes the chance of cracking.
For this wheel, the lower ram was first
loaded to 2,000 lbs of pressure and the
bent area moved out noticeably.
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4. The upper ram was then loaded to 2,000
lbs as well. This load dropped the
pressure of the lower ram to well under
2,000 lbs. The lower axis pressure was
then brought back up to 2,000 lbs. This
pressure drop occurrence happens
repeatedly in every dual axis straightening
application.
Each time one axis load is increased, the
other axis load decreases. As alternating
pressure applications continued, the
differential amount decreased each time,
until both loads remained steady at 2,000
psi. All pressure increases are always
initiated from the lower axis first.
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5. Pressure on the upper ram was then
increased to about 3,000 lbs. This dropped
the pressure on the lower ram back to
about 2,500 lbs. The lower ram pressure
was then pumped back to 3,000 lbs and
pressure was alternated until both pumps
showed 3,000 psi. At that point, the upper
ram pressure was released and the ram
position was staggered into a different
plane to improve the massaging action.
When the pressure was released from the
upper ram, the pressure on the lower ram
increased to 4,000 lbs. By distributing the
load over two axes, 4,000 psi of pressure
was reached without actually having
applied that great a force from either
axis.
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6. After the upper ram was repositioned, the
pressure was pumped back up to 3,000
lbs. This dropped the pressure on the
lower ram back to 3,000 lbs. Alternating
pressure was then increased carefully,
each time with the lower ram first and
movement in the bent area was observed
closely. This process was continued until
both rams read 5,000 psi. Pressure from
the upper ram was then slowly lowered.
At that point, the pressure on the lower
ram increased to 6,000 psi.
Please note this essential fact again; by
distributing the load over two axes, 6,000
psi of pressure was reached without
actually having applied that great a force
from either axis.
Upper Ram
Lower Ram
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7. After the bent area looked symmetrical to
the naked eye, the dial indicator was
mounted on the machine and the wheel
was measured for runout. The final
touches to achieve desired roundness
were repeated in the same manner with
both dual axis and single axis pressure with
the lower ram only. Lead hammer impact
was also used while the lower ram was set
up with about 2000 lbs of pressure.
Dial Indicator
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8. A shot of the wheel, after straightening.
The final indicated runout was .034” in the
bead seat, which was more than sufficient
to pass every performance test required by
the SAE for all new factory wheels.
Total repair time was about 30 minutes.
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