Newton Ultracaster (Pair)

Manuals, Literature & Videos for the Newton Ultracaster (Pair)

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Overview of the Newton Ultracaster (Pair)

16% more tear resistant than the leading brand and 10% lighter, Newton Ultracaster wheels give you a more efficient way to move around!  Built to minimize rolling resistance, and increase speed, comfort and mobility. The composite ultracaster is 9 times more durable than the leading brand. Aluminum has a higher efficiency and requires less maintenance. Available in three sizes: 4”, 5”, 6” and in composite or aluminum.

The Newton Story:

Newton high-performance wheelchair components are born from Newton's impatience with the status quo. Every Newton component represents a total rethink of what's possible. High-end performance and design with innovative technology and materials and head turning aesthetics. A single glance tells you it's a Newton component. A single test drive confirms it. Upgrade your ride; get Newton.

Measuring Guide

View Detailed Measurement Guide

Seat Depth¹

Measure from the most posterior point of the body to the inside of the knee, minus at least two inches. Some prefer more leg overhang to make room for their hand when lifting their leg.

Back Height²

Measured from the seat base to the top of the wheelchair back. Depends on how much upper back support is needed, and also affects freedom for the upper body to rotate.

Rear Seat to Floor³

Measurement from the ground to the rear seat edge. Relative to the front seat-to-floor dimension, this determines the rearward slope ("dump" or "squeeze") of the wheelchair seat.

Hanger Angle⁴

Determines how far the toes extend away from the body, measured from the horizontal. A tighter angle allows the wheelchair to turn around in less space. Depends in part on ability of the knee to bend towards the perpendicular.

Seat Width⁵

Determined by the widest point of the body from knee to hip, plus an inch to ensure room to move. Consider bulk of clothing, particularly a heavy winter coat, if relevant.

Wheel Camber⁶

Angle of the wheel relative to the vertical. More camber improves stability and agility, but also limits ability to pass through narrow spaces. A typical daily wheelchair uses three degrees of camber.

Front Seat to Floor⁷

Measure the leg from the back of the knee to the sole of the foot. Then subtract the thickness of the cushion when it is compressed. Next, add a minimum of two inches for footrest clearance. Do not add the footrest clearance if the wheelchair will be foot-propelled.

Footrest Width⁸

Measure from the inside of each legrest tubing the distance or desired distance between legrests.

Center of Gravity⁹

Measure from the front of the seat back post to the center of the rear axel.

Seat to Footrest Length¹⁰

Measure from the edge of the seat upholstery to the top rear of the footrest.

Backrest Angle¹¹

Measure the the angle of the back post to the floor. Ninety degrees will be perpendicular to the floor, to approximate the angle from the back post to the seat, subtract two degrees from measurment for every .5" of dump.

More Information on the Newton Ultracaster (Pair)

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