Two years ago, we heard how the Ohio-based Smart Tire Company was developing shape memory airless bicycle tires. Well, the resulting Metl tires can now be purchased via – you guessed it – a Kickstarter campaign.

NASA-inspired airless bicycle tires are now available for purchase::undefined

  • Phoenixz@lemmy.caEnglish
    322·
    1 year ago

    No they’re not

    This is Kickstarter scam #3752726, don’t waste your money

  • waterbogan@lemmy.worldEnglish
    27·
    1 year ago

    Interesting tech but there are already decent available solutions such as the Schwalbe Marathon Plus and similar that are effectively glassproof, I have these on my bike and they work really well, one is over 15 years old now

      • waterbogan@lemmy.worldEnglish
        3·
        1 year ago

        You should ride around the city centre here, you will have so much glass in your tires in no time flat, you’ll love it!

    • number6@feddit.nlEnglish
      2·
      1 year ago

      How are they for coming off ? The various reinforced tires I’ve tried (randoneur, gator, 25mm) are really hard to put back on. Like you peel the skin off your hands trying. I’ve notice that most tires, even cheaper ones, don’t give you trouble for the first 500 miles. So have gone back to a medium grade tire that doesn’t require special tools to replace.

      • waterbogan@lemmy.worldEnglish
        2·
        1 year ago

        I dont know, I have never had to replace one, so never had to take one off. The one time I ever had one fail was when I hit a piece of timber with multiple nails in it, and I got my local bike shop to swap it. Tyre was already over ten years old at that point, and given I ride somewhere between 200 and 600kms a month probably had well over 10,000 kms on it

  • 21Cabbage@lemmynsfw.comEnglish
    82·
    1 year ago

    Well for that price they can go fuck themselves and also isn’t that the same metal as high end vape coils?

    • JoBo@feddit.ukEnglish
      7·
      1 year ago

      You’re probably thinking of Nichrome, which has been the bog standard for vape coils since forever. It’s the same metal as used in most toasters, used because its resistance doesn’t change with temperature. The ‘high end’ version is Kanthal, which is even more stable at high temperatures (and it tastes better). They’re used because most heating applications need a consistent power delivery based on a constant voltage input, which you don’t get if the resistance changes as it heats up (power = volts-squared/resistance).

      But then, for vaping, temperature control (TC) came along. This prevents burnt hits, and can help get the best flavour out of e-juice because some flavours are temperature-sensitive. TC relies on using a metal which does change resistance with temperature, because this is what allows the technology to measure the temperature of the wire. For safety, resistance needs to rise (not fall) as it gets hotter. Early TC used nickel, whose resistance increases a lot with temperature, but the tech is now good enough to work with stainless steels, whose resistance changes so little that it can be used in both watts mode and TC mode.

      This has been your enitrely irrelevant interlude. Back to bike tyres.

  • colourlesspony@pawb.socialEnglish
    61·
    1 year ago

    Those look really cool! I wonder what the installation process is like. I installed tannus solid tires on my commuter bike and I like them but they where a nightmare to install. My arm and shoulder where sore for like a week after I put them on because of how much pressure and finesse it took to get the 200 or so plastic pins to pop into the rim. At least I’m confident they will never come off on there own.

  • June@lemm.eeEnglish
    1·
    1 year ago

    Any notion on weight limits? Didn’t see it in my skin of the article or the kickstarter.

  • _haha_oh_wow_@sh.itjust.worksEnglish
    1·
    1 year ago

    I always thought this tech was cool, and this implementation seems promising, but I’ll definitely be taking a wait and see approach.