EXAR Tube 700C Ultralight TPU Inner Tube Instruction Manual

EXAR Tube 700C Ultralight TPU Inner Tube

Warnings

Please read the manual carefully before use, and use the product in strict accordance with the requirements of the manual.
Please check your bicycle tires before riding to make sure they are properly installed and free of air leaks.
Otherwise, it may cause danger to your riding safety or even serious personal injury

Cautions

1. Rims and cover tires matching the specifications of the inner tube valves are recommended.
2. The inner tube is plastically deformed, which means that the inner tube will expand but not fully return to its original shape if it is inflated. Installing the expanded inner tube into a narrower cover tire is not recommended. For example, we do not recommend putting an inner tube that has been used in a 28mm wide tire into a 23mm wide tire for further use.
3. A hand pump, rather than an air compressor or other high-speed inflation device, is recommended for inflating.
4. The tire pressure shall be maintained within the nominal range of the wheelset or cover tire during inflating. However, it should be noted that the air pressure changes with the temperature. For every 2.5°C increase in the temperature, the tire pressure will increase by 1%. Especially when the vehicle is running on a black asphalt road, the tire pressure may easily exceed the maximum allowable range. Excessive tire pressure can cause the tires to disengage from the rim during running, resulting in loss of control and the risk of a fall.
5. If the tires are to be stored in an environment where the temperature exceeds 70°C (such as in a car exposed to the sun or in a winter garden), we recommend deflating the inner tube to 3.5bar/50psi to prevent damage.
6. For the consideration of safety, the inner tube shall be checked before changing a wheelset or cover tire. It is recommended to replace in time an inner tube that is found to be inflated unevenly or shows such signs as wrinkles, stretches or creases.
7. The product is made of TPU (thermoplastic polyurethane elastomer) with a heat resistance that is slightly lower than that of butyl rubber inner tubes but better than that of latex inner tubes. Braking by some rim brake wheelsets may cause air leakage and permanent damage to the inner tubes (disc brake wheelsets are safe).
8. If the braking force is expected to exceed the conventional scenario, such as for a long downhill or a bike with an excessive load, we recommend decelerating by the inching braking and suspending continuous braking, and the rider may wait to ride until the rim cools down. In addition, it is recommended to reduce the tire pressure by 1.5bar/20psi before a long downhill, so that the temperature rise will not cause the tire pressure to be excessive.
9. Please select the inner tube whose valve is of the appropriate length. The valve core of this product cannot be disassembled. If a valve extension is needed, please use an external valve extension for which it is not required to disassemble the valve core.
   10. In order to ensure the performance of the inner tube welding part, a Teflon gasket is used in the tire body, which is not a foreign matter.

Installation Instructions and Inspections before Use

1. Before installing an inner tube, such locations as the inner wall of the cover tire, the rim, and the tire cushion should be checked, so as to ensure that there is no raised sharp item that may cause the inner tube to rupture.

2. Even for tubeless wheels, tire cushions with the correct size are recommended and should be properly installed.

3. Before installing an inner tube to the rim, the inner tube should be slightly inflated to a round shape with a bicycle pump, and the pressure should be lower than 0.5bar/8psi.

4. For the cover tire installation, the cover tire bead on one side should be first installed into the rim groove; then, the inner tube valve should be inserted into the rim valve hole, and the inner tube should be inserted into the cover tire and put into the tire groove.
   The inner tube between the cover tire and the rim must be smooth without folding or twisting. The tire bead on the other side of the cover tire should be pried into the groove at last.

5. The installed tire should be checked again to make sure that the inner tube is not squeezed by the cover tire or the rim.

6. After installation, the inner tube should be slowly inflated with a presto valve inflator, ensuring that the tire pressure is kept within the range required by the tire and the rim.

7. Note: Do not install with metal or sharp tire spoons, because such tools may damage the inner tube, cover tire, or the rim.

Specifications and Parameters

Product Model

| Tire Valve| Weight| Wheel
Diameter| Compatible
Tire Width
---|---|---|---|---
Tube700c| 60/75Presta Valve| 36g| 700c|

c 23c~28c

After-sales Service

For any questions (or more information), please contact your local distributor or contact us directly.
After-sale Support: support@magene.com

Qingdao Magene Intelligence Technology Co., Ltd. Building 2, 130 Jiushui Dong Road, Licang District, Qingdao, Shandong, China
Reference Standard: GB/T 1703-2017

support-cn@magene.cn

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