Top End T-5 7000 Series Tennis Chair

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Overview of the Top End T-5 7000 Series Tennis Chair

The Top End T-5 7000 Series Tennis Chair is made of a lighter weight aluminum and is about two pounds lighter than the previously used aluminum, making the T-5 7000 Series more comparable to titanium frames. This tennis chair also features the Nord-Lock bolt securing system for the axle receivers.

Design Changes
The T-5 7000 Series Tennis Chair features a number of design changes for a sleeker and more secure chair. The head tube utilizes precision components that maximize stiffness, reduce play and improve overall responsiveness of the casters. Also, the frame members sleek and curved design add a sharp look to the camber tubes and anti-tip.

Benefits of 7000 Aluminum
Not only is this type of aluminum lighter than others, but it is also significantly stronger. The additional strength allows for a reduction in the wall thickness of the tubes which reduces weight of the chair. In addition, the rigidity and strength of the 7000 aluminum is further enhanced by Invacare Top End's sophisticated heat treating and powder coating process.

Nord-Lock Bolt Securing System
Axle receivers are locked into the frame with the Nord-Lock bolt securing system. This system minimizes axle play which makes the rear wheels more secure and solid, an important feature in a tennis chair. Nord-Lock bolts have been around since 1982 and they are highly effective in resisting loosening by vibrations and load.

*16 pounds frame weight is based upon a completely assembled chair with standard rear wheels, upholstery and footrest

Measuring Guide

Seat Depth¹

Measure from the most posterior point of the body to the inside of the knee, minus at least two inches. Optimal contact between the legs and the seat increases stability for the body.

Back Height²

Measured from the seat base to the top of the chair back. Sport users need enough height for upper body support, yet low enough to allow the arms and trunk to rotate freely.

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 seat. Sport chairs usually have more dump for extra upper body stability.

Hanger Angle⁴

Determines how far the toes extend away from the body, measured from the horizontal. Sport users often use very tight angles to be able to rotate in the smallest possible space.

Seat Width⁵

Determined by the widest point of the body from knee to hip, plus an inch to ensure room to move. Sport chairs are typically as narrow as possible to save weight which improves agility.

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 sport chair uses nine to twelve 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 chair 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.

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