Advertise on Bikeforums.net



User Tag List

Results 1 to 19 of 19

Thread: airless tires

  1. #1
    Senior Member
    Join Date
    May 2013
    Location
    Berea KY
    My Bikes
    motorized cruiser,& Mtn bike & Folder
    Posts
    133
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    airless tires

    i'm having flat tire issues with my bike with no real indication of what is causing them, ie: no puncture in tires, Liner on wheel seems intact. i'm starting to wonder ifmaybe i should start think about getting something that won't go flat... i'm missing out on some great rides throughout my travels....

    Anyone have experience with tires that don't go flat ? i have Origami with suspension so i don't think ride would be an issue. Thx Cuz

  2. #2
    The Recumbent Quant cplager's Avatar
    Join Date
    Jan 2012
    Location
    Norwalk, CT
    My Bikes
    2012 Cruzbike Sofrider, 2013 Cruzigami Mantis
    Posts
    2,774
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Where are the punctures? If your tire pressure is too low, you could be getting pinch flats.

    Airless tires don't (yet?) have a good track record pin l on bicycles.
    http://Charles.Plager.net
    http://RecumbentQuant.blogspot.com

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    San Rafael, California
    Posts
    1,485
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Agree .. identify where the air is leaking from the tube.. the most robust tire out there in the 20" world is the Schwalbe Marathon Plus (47x406).. resists punctures better than the rest .. but if you are not getting punctures from the outside, they won't help you out.. if you have plastic rim strips, I'd replace with good quality cloth tape as plastic can move around and expose edges of spoke holes.. I like the idea of airless tires, but have never run them...

  4. #4
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    38,952
    Mentioned
    20 Post(s)
    Tagged
    0 Thread(s)
    want a Workout? the rolling resistance will give it to you..

  5. #5
    Senior Member
    Join Date
    Nov 2008
    Location
    Bay Area, Calif.
    Posts
    4,689
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fietsbob View Post
    want a Workout? the rolling resistance will give it to you..
    +1 Rolling resistance tends to be a bit higher for small wheels anyway and is much higher for airless tires.

    Check to see exactly where the hole is in your tube and then carefully examine the corresponding part of the tire and rim strip.

  6. #6
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    38,952
    Mentioned
    20 Post(s)
    Tagged
    0 Thread(s)
    47-406 Schwalbe Marathon Plus and thorn resistant tubes , pumped up to 75psi are OK,
    a pretty decent ride..

  7. #7
    Hello zebede's Avatar
    Join Date
    Aug 2007
    Location
    Suncoast, Florida
    My Bikes
    BF Tikit, Dahon Speed TR, Mezzo I4
    Posts
    520
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    REDUCE THE VARIABLES

    -Install a quality tire, tube and rim strips
    -keep inflated to pressure

    These steps alone should dramatically reduce the frequency of flats.

    If not, come back to discuss the less common variables (all very fixable).

  8. #8
    Senior Member
    Join Date
    Jul 2013
    Posts
    50
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Are you sure a bit of glass didn't make its way in? I was wondering where my mystery leaks were coming from until I inspected the inside of the tire carefully. Barely looked like a speck of sand until I picked at it.

  9. #9
    Senior Member darukhan's Avatar
    Join Date
    Nov 2011
    Location
    Chicago-land
    Posts
    260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    One possibility that could cause leaks has not been mentioned yet.... your valve core!

    Is your valve core loose?

    Inside your tire valve is a core that can be unscrewed. If this is just a little bit loose, you can add air all you want, and it might eventually leak out! Make sure your valve core is screwed into the valve stem tightly.

    Whenever I air up my tires, I check my valve core. I have 1 valve stem cap on every bike that has a valve core tool on it so I can tighten (or loosen, to QUICKLY release air) the valve core.

    Like this (less than 50 cents on Amazon!):

    41ls9oPeFPL._SY300_.jpg

  10. #10
    jmm
    jmm is offline
    Member
    Join Date
    Mar 2004
    Location
    NW New York
    Posts
    37
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by darukhan View Post
    ...Is your valve core loose?
    or defective? I had a removable core Presta drive me nuts. The bike wouldn't lose any more pressure than would be considered normal if it sat around unridden for a month, but would lose ~30 PSI on the rear if ridden for ~4 hours. Tightening and silicone grease on the valve core O-ring seal didn't help but after months of frustration, replacing the core fixed the problem.

    I like the Schwalbe removable core Presta tubes with the all metal stem, as I've also had strange problems in the past with the kind of tubes that had a stem where the outer rubber part was bonded to a metal core.

    I use a torque wrench made specifically for valve cores on my Schrader equipped bikes, but have never run across one for Prestas.

    I tried airless MTB sized tires 10 or 15 years ago. Can't remember the brand, but think they were made from polyurethane. They $ucked, big time, harsh and low on traction. I took them off in less than a week and they must have been so bad I threw them out because they don't appear to be in the basement used tire pile now.

    John
    Last edited by jmm; 11-20-13 at 09:15 PM. Reason: spelling

  11. #11
    Senior Member darukhan's Avatar
    Join Date
    Nov 2011
    Location
    Chicago-land
    Posts
    260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    For reference in regards to valve cores, below is a picture of a Presta valve core (on the left) versus a Schrader valve core (on the right)

    cbGWh.jpg


    Also, here's a cutaway animation of a Schrader valve core at work....



    SO...... the whole point of all this valve core talk, is that if your core is faulty or ever so slightly loose (inn other words, unscrewed a tiny bit), you could be slowly leaking air out of the valve stem!

  12. #12
    Senior Member darukhan's Avatar
    Join Date
    Nov 2011
    Location
    Chicago-land
    Posts
    260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Here's an example of airless tires....




  13. #13
    Senior Member
    Join Date
    Jun 2008
    Posts
    306
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jmm View Post
    or defective? I had a removable core Presta drive me nuts. The bike wouldn't lose any more pressure than would be considered normal if it sat around unridden for a month, but would lose ~30 PSI on the rear if ridden for ~4 hours. Tightening and silicone grease on the valve core O-ring seal didn't help but after months of frustration, replacing the core fixed the problem.

    I like the Schwalbe removable core Presta tubes with the all metal stem, as I've also had strange problems in the past with the kind of tubes that had a stem where the outer rubber part was bonded to a metal core.

    I use a torque wrench made specifically for valve cores on my Schrader equipped bikes, but have never run across one for Prestas.

    I tried airless MTB sized tires 10 or 15 years ago. Can't remember the brand, but think they were made from polyurethane. They $ucked, big time, harsh and low on traction. I took them off in less than a week and they must have been so bad I threw them out because they don't appear to be in the basement used tire pile now.

    John
    John - you need to get yourself a Park VC-1

    http://www.parktool.com/product/valve-core-tool-vc-1

    I have never used one myself but compared to you I am pretty lax on my bike maintenance. I have no affiliation to this company and offer nothing for sale, no prices etc. so hopefully I won't get banned like Thor (no slight intended on the mods, they are just doing their jobs).

  14. #14
    Senior Member
    Join Date
    Jun 2008
    Posts
    306
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by darukhan View Post
    Here's an example of airless tires....



    I had a similar bike once but unfortunately used Air Jordans....

  15. #15
    Senior Member Ozonation's Avatar
    Join Date
    Apr 2012
    Location
    Ontario, Canada
    My Bikes
    Rivendell Sam Hillborne DTT in Awesome Green; Brompton M6R (reduced gearing) in Sage Green; GT Timberline Hybrid (10 years old!)
    Posts
    875
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'd also check the valve. I had both Brompton tires expire on me - literally. A crack started where the valve stem met the tube, and while I can't be 100% positive, I'm sure it's because the tire pump I have seems "sticky" and I really have to attach the pump carefully and disengage it as gently as I can. Otherwise, the valve would flop around as I struggled to pop the pump off. I replaced the stock Brompton tire tubes with Schwalbe's tubes with metal valves and tightening nuts - much less prone to damage.
    Rivendell Sam Hillborne and Hunqapillar; Brompton M6R Sage Green; Salsa Mukluk 3 FAT Bike; Nerdy Academic; Nikonian; Wing Chun; and a Patridge in a Pear Tree.

  16. #16
    Senior Member
    Join Date
    Aug 2005
    Location
    San Rafael, California
    Posts
    1,485
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DoubleDiamonDog View Post

    hopefully I won't get banned like Thor (no slight intended on the mods, they are just doing their jobs).

    Thor reported that he got a 'warning' not that he was being 'banned' .. pretty big difference.. where has it been shown he was banned?

  17. #17
    Senior Member
    Join Date
    May 2013
    Location
    Berea KY
    My Bikes
    motorized cruiser,& Mtn bike & Folder
    Posts
    133
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    not the valve last tube leaked tread side liner looked good, could not find anything in tire at all.... i looked and LBS checked it over very carefully. New tube had air when i checked it 3 days after putting it up but on day 5 it was flat and lost bead...... i'm going to change liner and i have Slime tube to stick in it, since i won't be home when LBS is open.

  18. #18
    jmm
    jmm is offline
    Member
    Join Date
    Mar 2004
    Location
    NW New York
    Posts
    37
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DoubleDiamonDog View Post
    John - you need to get yourself a Park VC-1
    That IS what I use with Prestas, I agree, GOOD tool (have several). I tried a similar looking thing from Stans when I experimented with tubeless (too messy for me though), but found it didn't fit some removable Presta cores, like on Surly Toobs (too tight). The Parks seem to work with everything I have.

    John

  19. #19
    Senior Member ziqpy's Avatar
    Join Date
    Dec 2013
    Location
    England
    Posts
    51
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    my sister use to have a bicycle with a solid tyre and the wheels looked like they were off a steam roller

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •