Tube Specifications

Size

• Dimensions:

  • 26 x 2 x 1-3/4 S7
    • Specifically designed for 26-inch diameter tires with unique Schwinn S7 sizing.
    • Fits S7 tires measuring 2 inches wide and 1-3/4 inches tall, used on Schwinn bikes from mid-20th century models.
    • Designed to accommodate the slightly different sizing standards of S7 Schwinn rims compared to ISO or standard sizing.

• ISO Compatibility:

  • Schwinn S7 tires typically correspond to an ISO bead seat diameter of 597 mm, distinct from standard 26-inch tire compatibility.

Applications

• Recommended Uses:
  • Classic Schwinn Bicycles: Fits vintage Schwinn cruisers, such as the iconic Typhoon, Corvette, and Hollywood models.
  • Retro Restoration Projects: Ideal for bringing older Schwinn bikes back to rideable condition.
  • Comfort and Cruiser Bikes: Suitable for bikes prioritizing smooth and relaxed rides.

Valve Specifications

1. Type:

   • Schrader Valve:
     • Standard automotive-style valve widely used in bicycles, compatible with most air pumps and compressors.
     • Sturdy and easy to use, ensuring reliable inflation and deflation.

2. Length:

   • 33mm:
     • Medium-length valve stem, appropriate for vintage and modern rims without excessive protrusion.

3. Core:

   • Removable Valve Core:
     • Facilitates maintenance and compatibility with liquid sealants for enhanced puncture resistance.
     • Allows replacement of the core if damaged or worn out.

4. Stem:

   • Smooth Valve Stem:
     • Prevents abrasion on the rim’s valve hole, reducing the risk of valve stem failure.

5. Angle:

   • 0° (Straight Valve):
     • Simplifies installation and inflation while providing a secure fit on standard Schwinn rims.

Material and Construction

1. Material:

   • High-Quality Rubber:
     • Offers excellent air retention, elasticity, and durability.
     • Resists punctures, aging, and temperature changes, making it suitable for long-term use.

2. Wall Thickness:

   • Medium to thick walls for balanced air retention and protection against road debris or pinch flats.

3. Construction:

   • Seamless Mold Design:
     • Eliminates weak points in the tube, ensuring consistent performance under stress.
   • Heat-sealed edges to maintain integrity and prevent leaks.

Performance Features

1. Vintage Fit:

   • Precisely tailored for Schwinn S7 rims, ensuring a proper fit and optimal performance on vintage Schwinn bicycles.

2. Durable Design:

   • Reinforced rubber construction enhances puncture resistance and longevity.

3. Air Retention:

   • Exceptional air-holding properties reduce the need for frequent inflation.

4. Riding Comfort:

   • Supports wide S7 tires, providing excellent cushioning for a smoother ride on paved roads or light trails.

5. Versatility:

   • Compatible with retro Schwinn cruisers as well as similar bicycles requiring S7 tire sizing.

Compatibility

1. Tires and Wheels:

   • Fits Schwinn S7 tire sizes marked 26 x 2 x 1-3/4.
   • Compatible exclusively with Schwinn rims manufactured to the S7 standard (ISO 597 mm).
   • Also, suitable for standard 26-inch rims with ISO 559 mm bead seat diameters.

2. Pump Compatibility:

   • Usable with any Schrader-compatible pump, including:
     • Hand pumps
     • Foot pumps
     • Electric air compressors

3. Bike Types:

   • Classic Schwinn cruiser bikes with S7 rims, including but not limited to:
     • Schwinn Typhoon
     • Schwinn Hollywood
     • Schwinn Corvette
   • Perfect for restoration projects of vintage Schwinn models.

Brand: Duro

1. Reputation:

   • A trusted brand in bicycle tire and tube manufacturing, known for its quality and durability.
   • Duro specializes in products tailored for a wide range of bicycles, from modern to vintage styles.

2. Focus on Innovation:

   • Incorporates advanced materials and design techniques to enhance product reliability.

3. Commitment to Cyclists:

   • Offers specialty products like this S7 tube, catering to the unique needs of retro and classic bicycle enthusiasts.