Aerothan Tube

DISTINCTLY DIFFERENT

Product

Aerothan is a material that completely redefines bicycle tubes: extremely light, with maximum puncture protection and designed for minimum rolling resistance.

About Aerothan

Aerothan Tube.
Is this still a bicycle tube?

During the development of Aerothan Tubes, we have explored new avenues right from the beginning. The result was a high-end alternative to conventional bicycle tubes. The next generation Aerothan tube sets new standards for weight, puncture protection, riding characteristics, easy installation and packing dimensions. Specifically made for road bikes, MTBs and all-round purposes.

Aerothan Tubes

Aerothan Tube.
The facts.

  • Fully light-weight, right to the valve - about 40% less weight than a comparable Schwalbe extra light tube
  • Puncture protection newly defined - the material itself prevents sudden air loss
  • Minimal rolling resistance - maximum riding dynamics
  • Extremely heat resistant - certified for rim brakes
  • A stable ride - even with low air pressures
  • Easy installation - without slipping or pinching
  • Made in Germany
  • 100% recyclable

Aerothan is 100% recyclable

Aerothan tubes consist of 100% thermoplastic polyurethane (TPU), including the valve, and are therefore fully recyclable. Like all Schwalbe tubes, Aerothan tubes may be returned to Schwalbe at no cost using the tube recycling programme. The material of used tubes is recycled to make sealing or insulation material.

Development

Aerothan.
The wonder material from the Schwalbe innovation hub.

Schwalbe aims to offer the ideal product for every cyclist. In terms of high-end bicycle tubes, this is an exciting challenge. The engineers had to combine seemingly opposing features, lowest weight and highest puncture protection. This is a case for the Schwalbe innovation hub, where material compositions and construction principles are redesigned to make entirely new products. Developed in cooperation with BASF and with experts from the German plastic manufacturing industry, the Aerothan tube emerged to not only meet all the requirements of a high-end bicycle tube, but to exceed them.

Aerothan Lab

Aerothan sets new standards which is further demonstrated during testing

Prior to market release of a Schwalbe innovation, we carry out numerous tests to assess its quality. The Aerothan test results speak for themselves.

?
  • PLUNGER TEST

    Force effect in N

    EXTENSION (mm)

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K)
    Schwalbe Extralight (X)
    Latex tube of brand B (L)

    During the so-called plunger test, a plunger with a round tip (1 mm diameter) is forced into the tube at increasing pressures until it can no longer sustain the pressure.

    The Aerothan tube is superior to all other tubes when tested at a force of 47 N, and its stretching capacity of 18 mm was the same as the test result of a latex tube.

  • Snake bite test (road)

    Drop height in mm

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K)
    Latex tube of brand B (L)
    Schwalbe Extralight (X)
    Tubeless Easy (TLE)
    Tire used for testing: Schwalbe Pro One Tubeless 25-622, 8 bar

    During the snake bite test, a guillotine is dropped onto the tire from increasing heights until the tube releases air due to a snake bite.

    The Aerothan tube sustains greater drop heights than latex or plastic tubes, and therefore, offers much greater protection from pinch flats.

  • Snake bite test (MTB)

    Drop height in mm

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K) (K)
    Latex tube of brand B (L)
    Schwalbe Extralight (X)
    Tubeless Easy (TLE)

    During the mountain bike specific snake bite test, a guillotine with a round edge is dropped onto the tire in order to simulate impacts from roots and stones. At the same time, the drop height is increased until the tire releases air due to a snake bite.

    The Aerothan tube is comparable to tubeless systems, and during MTB specific testing, it shows significantly greater protection from pinch flats than the X-Light butyl tube

  • Weight

    29“ MTB tube in g

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K)
    Schwalbe Extralight (X)
    Latex tube of brand B (L)

    The given weight is an average value derived from ten tubes each per model which were weighed.

    The Aerothan tube saves more than 50 g in weight compared to Schwalbe Extralight, and on top of that, it offers much better puncture protection.

  • Rolling resistance

    Increased efficiency in W

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K)
    Latex tube of brand B (L)
    Schwalbe Extralight (X)
    Tubeless Easy (TLE)
    Tire used for testing: Schwalbe Pro One TT, 25-622, 8 bar

    During the rolling resistance test, the tire rolls at a speed of 40 km/h. The output required to maintain this speed is measured.

    Here, the rolling resistance of the Aerothan tube is about the same as the latex tube. However, with much less weight.

  • Dynamic heat resistance

    Temperature in C°

    Diagram
    Aerothan (Æ)
    Plastic tube of brand A (K)
    Latex tube of brand B (L)
    Schwalbe Extralight (X)
    Tire used for testing: Schwalbe One 25-622, 19TC rim

    During the heat resistance test, a starting temperature of 30°C is chosen and the test is carried out at a speed of 78 km/h and a 30% brake force. Additionally, the number of emergency brake applications the tube resists is recorded.

    The dynamic test winner is the Aerothan tube; and this is the only tube that can withstand a sequence of seven emergency brake applications. All Aerothan tubes are approved for use with rim brakes.

    Good to know: Aerothan tubes do not suddenly burst. Any air loss occurs slowly as a worst case, while the bicycle normally remains easy to control.

    Developer Developer

    Questions to the product manager

    Interview with Schwalbe product manager Felix Schäfermeier about the development of Aerothan tubes.

    How did you come up with the idea of developing a bicycle tube without rubber?

    Bicycle tubes are a huge challenge for developers because one needs to combine completely opposing features in one product. A tube must be light-weight, but also extremely stable. With a classic butyl tube, one can achieve great puncture protection and excellent air holding capacities, but realising low weight is the limiting factor. Exactly this is why we wanted to completely rethink tubes and have decided to search for alternative materials. In cooperation with BASF, we have developed a thermoplastic polyurethane (TPU), which suits extreme requirements: Aerothan.

    What was the biggest challenge during developments?

    TPU-plastics already have many different applications in industry, e.g. as sealing or insulation material. And the approach to use this material for tubes is not new. However, past attempts have had significant limitations. For example, tubes were not approved for use with rim brakes due to a lack of sufficient heat resistance. We wanted to change this and have come up with special testing procedures to be able to test various materials. A thermoplastic polyurethane has allowed us to create an entirely new material base.

    Is Aerothan a completely new material?

    Yes, absolutely! In cooperation with BASF, we were able to reinvent Aerothan from scratch. Not only did we redevelop the base material, but we also redesigned the entire manufacturing process. During this phase, we got to benefit enormously from the expertise of German companies within the plastics processing industry. Aerothan tubes are produced in Germany using a patented laser welding process. This particular technique allows high precision welding of the valve and tube. In addition, it allows production of extremely flat seams that, not only secure a perfect form fit with the tire carcass resulting in extremely smooth riding, but also play an important role for puncture protection. After all, seams are subject to extreme mechanical stress. The durability of the seam was proven in several tests.

    Read more

    Tubes

    Aerothan Tube Race

    For road riding with tubes, the Aerothan tube is the first choice. It offers low rolling resistance with dynamic, smooth riding characteristics. more »

    AEROTHAN RACE

    SV20E | 23-622 to 28-622 | 41 g

    AEROTHAN ENDURANCE RACE

    SV16E | 28-622 bis 35-622 | 50 g

    RRP 27,90€


    Aerothan Tube ALLROUND

    The Aerothan Tube Allround is the extremely light and absolutely reliable high-end tube for urban cycling and touring. more »

    AEROTHAN ALLROUND

    SV17E | 37-622 bis 50-622 | 61 g

    RRP 27,90€


    Aerothan Tube MTB

    The Aerothan Tube MTB is just as resistant to snake bites as it is to side wall damage – thanks to the extremely robust material. more »

    AEROTHAN MTB

    SV13E | 54-559 bis 62-559 | 81 g
    SV19E | 54-622 bis 62-622 | 87 g
    SV21E | 54-584 bis 62-584 | 83 g

    RRP 27,90€

    AEROTHAN MTB+

    SV19FE | 62-622 bis 75-622 | 116 g
    SV21FE | 62-584 bis 75-584 | 109 g

    RRP 29,90€

    Product overview

    RACE Endurance RACE Allround MTB MTB+
    Purpose Road Road/CX/Gravel Trekking/Touring/Gravel XC/Marathon/Trail/Enduro XC/Marathon/Trail/Enduro
    Designation SV20E SV16E SV17E SV13E SV21E SV19E SV21FE SV19FE
    Wheel size 28 “ 28 “ 28 “ 26 “ 27,5 “ 29 “ 27,5 “ 29 “
    ETRTO 23-622 to 28-622 28-622 to 35-622 37-622 to 50-622 54-559 to 62-559 54-584 to 62-584 54-622 to 62-622 62-584 to 75-584 62-622 to 75-622
    Valve SV, 40 mm SV, 40 mm SV, 40 mm SV, 40 mm SV, 40 mm SV, 40 mm SV, 40 mm SV, 40 mm
    Packing size 28 mm x 80 mm 32 mm x 80 mm 38 mm x 80 mm 54 mm x 74 mm 54 mm x 77 mm 54 mm x 80 mm 68 mm x 77 mm 68 mm x 82 mm
    Weight 41 g 50 g 61 g 81 g 83 g 87 g 109 g 116 g
    100% recyclable
    Made in Germany
    Approved for rim brakes

    FAQ

    • General
      • What exactly is Aerothan?

        Aerothan is a special thermoplastic polyurethane which Schwalbe has developed in cooperation with BASF. It serves as base material for high end bicycle tubes, Aerothan tubes, which are made in Germany using a patented welding process.

      • What advantages does Aerothan offer?

        Aerothan tubes are extremely light, yet highly puncture resistant. The low rolling resistance offers an extremely dynamic riding experience. Aerothan retains its shape and ensures stable riding characteristics on all bicycles, even at low air pressures. At the same time, its dimensional stability makes it easy to install because the tube does not slide around and cannot get pinched.

      • Does Aerothan offer advantages over tubeless systems?

        Schwalbe is the expert for tubeless tires. However, some cyclists prefer using a tube despite tubeless as the state-of-the-art option. Additionally, certain wheel types are not suitable for tubeless. Therefore, we have developed Aerothan tubes – the high-end alternative to conventional bicycle tubes. Many of its technical advantages achieve the same high standards that tubeless systems do.

        Aerothan Tube Tubeless System
        Rolling resistance — — — — — — — — — —
        Weight — — — — — — — — — —
        Puncture protection — — — — — — — — — —
        Riding with low air pressure — — — — — — — — — —
        Easy installation — — — — — — — —
        Small punctures are sealed automatically — — — — — 1

        1 if used with tire sealant

      • Which tire sizes are Aerothan tubes available for?

        Aerothan tubes are available for all common tire sizes for: Road, Allround and MTB. For an overview with all sizes, please see here.

      • What kind of terrain are Aerothan tubes intended for?

        Aerothan tubes are available in the categories Road, Allround and MTB, where Aerothan has extremely diverse areas of application due to its particular material characteristics. For an overview of all intended purposes, please see here .

      • Are there tolerances of or deviations from the given weight?

        Aerothan is a flexible material and is subject to limited tolerances (as opposed to solids such as metal). Despite highly elaborate manufacturing and control procedures, deviations in weight of +/- 5% may occur.

      • Are Aerothan tubes recyclable?

        Like all Schwalbe tubes, Aerothan tubes are 100% recyclable. As opposed to conventional butyl tubes, Aerothan tubes are completely made of a thermoplastic polyurethane – including the valve. This makes the recycling process even more straightforward. Just like all other Schwalbe tubes, Aerothan tubes may be returned to us via the tube recycling programme. Reusing Aerothan as bicycle tubes is not possible yet; instead, the recycled tubes enter a second life cycle as sealing or insulation material.

    • Installation & servicing
      • How do you install Aerothan tubes?

        Aerothan tubes are installed just like any other bicycle tube. Thanks to the dimensional stability of the material, the tube does not shift easily and does not get pinched, which allows for much more straightforward installation. However, outside the tire, Aerothan tubes may only be inflated up to max. 0.3 bar.
        assembly instructions

      • Why do these tubes change colour inside the tire after installation?

        The transparent Aerothan material changes colour when in contact with the compounds of the tread. This is due to diffusion of volatile substances which are released as a result of the vulcanization process. This occurs especially with new, unused tires. The change in colour has no impact on performance or durability of the tubes.

      • Can I repair Aerothan tubes?

        You can easily repair Aerothan tubes using Schwalbe Glueless Patches. Roughening, as with a butyl tube, is not necessary. Instead, the self-adhesive patches are directly placed on the area to be fixed. To do so, the surface should be as clean as possible.

      • May I inflate Aerothan tubes outside the tire?

        An Aerothan tube may be inflated carefully outside the tire until it has no more folds and is round in shape (equivalent to max. 0.3 bar).

      • Can I inflate Aerothan tubes using CO2 cartridges?

        Yes, however, a CO2 cartridge should only be used once the tube has been fully installed. Outside the tire, Aerothan tubes may only be inflated carefully until they reach a round shape and are free of folds (equivalent to max. 0.3 bar); CO2 cartridges are not intended for this purpose.

      • Can Aerothan tubes be taken out and reinstalled in a different tire?

        Yes, however, an Aerothan tube may only be reinstalled into a tire of the same or of greater width.

      • Can I use Aerothan tubes with sealing liquid?

        Sealing liquid does not achieve any sealing effect with Aerothan tubes because the surface tension of thermoplastic polyurethane (TPU) is very high. Using latex based sealing liquid for tubes made of TPU is not recommended due to the chemical composition. For optimal performance, Aerothan tubes should only be used in tires without sealing liquid. Long-term use with sealing liquid is not recommended.

      • Can Aerothan tubes be used with repair spray?

        Repair sprays do not achieve any sealing effect with Aerothan tubes because the surface tension of thermoplastic polyurethane (TPU) is very high. Using repair spray for tubes made of TPU is not recommended due to the chemical composition. For optimal performance, Aerothan tubes should only be used without repair spray. Long-term use with repair spray is not recommended.

      • Are Aerothan tubes suitable for rim brakes?

        All Aerothan tubes are approved for rim brakes. Aerothan tubes are extremely resistant to heat and can sustain high thermal stress (for example during emergency braking). Also, in case of a defect, air does not suddenly escape, which is why riding stability remains unaffected.

    • Tire pressure
      • What is the correct tire pressure for Aerothan tubes?

        Thanks to their high degree of form stability, Aerothan tubes may be used at much lower air pressure than conventional bicycle tubes. To find out what air pressure is right for you, please refer to the recommendations for tubeless systems. Please note that the minimum air pressure engraved on Schwalbe tires applies to the use with butyl tubes. When using Aerothan tubes, lower values may be applied.

        The Schwalbe MTB Pressure Prof offers an easy way to quickly calculate optimal air pressure on-line. Pressure Prof

      • Which maximum tire pressure can Aerothan tubes handle?

        To find out the maximum air pressure for Aerothan tubes, please refer to the range of air pressure given on the side wall or rim. If the maximum pressure printed on the rim is lower than the one of the tire, then the maximum pressure of the rim applies. If you have any questions, please contact the manufacturer.

      • How often do Aerothan tubes need to get reinflated?

        Aerothan tubes are comparable to butyl tubes for air holding capacities. Having to frequently re-inflate, as one might be used to with latex tubes, is therefore not required. For optimal performance, air pressure should be checked regularly.

    • Valve

    Buying Aerothan tubes

    Aerothan tubes are available at retailers who are experts on innovative bicycle technology.

    Aerothan Tube Logo Aerothan Packs