Advertise on Bikeforums.net



User Tag List

Results 1 to 18 of 18
  1. #1
    Senior Member randya's Avatar
    Join Date
    Jul 2003
    Location
    in bed with your mom
    My Bikes
    who cares?
    Posts
    13,696
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Emergency Bike Pump Lets You Fill Bike Tires From Car Tires


  2. #2
    Senior Member
    Join Date
    Apr 2010
    Location
    Elevation 666m Edmonton Canada
    My Bikes
    2013 Custom SA tourster
    Posts
    470
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Car tires. nah.

    Truck tires have much higher pressure.

  3. #3
    JRA
    JRA is offline
    Senior Member JRA's Avatar
    Join Date
    Jul 2002
    Location
    St. Louis
    Posts
    945
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Except for the pressure problem, it's a great idea. We all know how difficult it is to blow up a bicycle tire using an actual pump.
    "It may even be that motoring is more healthful than not motoring; death rates were certainly higher in the pre-motoring age."- John Forester
    "Laws cannot be properly understood as if written in plain English..."- Forester defending obfuscation.
    "Motorist propaganda, continued for sixty years, is what has put cyclists on sidewalks." - Forester, sociologist in his own mind
    "'There are no rules of the road on MUPs.' -John Forester" - Helmet Head quoting 'The Great One'

  4. #4
    Senior Member
    Join Date
    Feb 2007
    Location
    Southern MA
    My Bikes
    Cotic Roadrat, Bianchi BASS, and a steel fixed-gear conversion of unknown make
    Posts
    930
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thaaaaaat's GENIOUS! As long as the driver of the car doesn't show up while you're nabbing his air.

    Typical car tires are at ~30-35 pounds, which is fine pressure for a desperate MTB or townie bike tire. Road bikes might need to find a nice big cargo truck of some sort- you might get 50-60 pounds out of them.

    Two non-locking air chucks might be a better setup- you wouldn't need to flip/lock the two levers, and attaching/detaching your 'pump' in a hurry would be a non-issue. You'd just need some good hand strength.

  5. #5
    Senior Member
    Join Date
    Jun 2009
    Location
    Edmonton
    Posts
    196
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Or you could not be an ass and take some air from your other tire.

  6. #6
    "Per Ardua ad Surly" nelson249's Avatar
    Join Date
    May 2006
    Location
    Kitchener, Ontario
    My Bikes
    Bianchi Specialissima, Mongoose Hilltopper ATB, Surly Cross-Check, Norco City Glide
    Posts
    1,402
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Raiden View Post
    Thaaaaaat's GENIOUS! As long as the driver of the car doesn't show up while you're nabbing his air.

    .
    I had exactly the same reaction. That's one way to get back at the cagers.
    1997 Mongoose Hilltopper, 1988 Bianchi Specialissima, 2006 Surly Cross-Check, 2010 Norco City Glide, 1947 CCM Single-speed.

    "Take him to the forge and show him the instruments"
    Bernardo Gui, Inquisitor The Name of the Rose

  7. #7
    Banned.
    Join Date
    Mar 2005
    Location
    Honolulu, HI
    Posts
    11,420
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JRA View Post
    Except for the pressure problem, it's a great idea. We all know how difficult it is to blow up a bicycle tire using an actual pump.
    A road-morph pump is pretty easy to get up to 100 psi.
    The above idea is a waste of pannier space.

  8. #8
    genec genec's Avatar
    Join Date
    Sep 2004
    Location
    san diego
    My Bikes
    custom built, sannino, beachbike, giant trance x2
    Posts
    22,521
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GamblerGORD53 View Post
    Car tires. nah.

    Truck tires have much higher pressure.
    Not hardly... most car tires run about 32 PSI, but due to the volume of the car tire, hold quite a bit more air. Bike tires on the other hand may range from 35 PSI to 120 PSI, depending on the type of tire and tube. My beach bike with fat tires holds 35 PSI, my commuter holds 85 PSI, and my road bike 120 PSI; all the tires on all my bikes probably don't equal the volume of one of my truck tires.

    Commercial or heavy duty truck tires do run at higher pressures.

  9. #9
    Senior Member
    Join Date
    Feb 2010
    Posts
    397
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Truck tires usually run at 100psi.

    Doesn't matter how much air is in a car tire, you're not getting more pressure then what's in there. I second the road morph, I use the turbo morph which has a fold out dial guage for easier reading.

  10. #10
    Senior Member sggoodri's Avatar
    Join Date
    Oct 2004
    Location
    Cary, NC
    My Bikes
    1983 Trek, 2001 Lemond, 2000 Gary Fisher
    Posts
    3,068
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by boro View Post
    Or you could not be an ass and take some air from your other tire.
    Or be an even bigger one and steal it from 5 other bikes....

  11. #11
    Pat
    Pat is offline
    Senior Member
    Join Date
    Jan 2002
    Location
    Orlando, FL
    My Bikes
    litespeed, cannondale
    Posts
    2,795
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    So the idea is to take air from someone else's tire assuming that the tire available would have enough pressure (almost certainly not true).

    One problem is that generally when I have a flat, I am out where there are no trucks or cars parked nearby. So I just carry a hand pump and pump up my tire.

  12. #12
    Senior Member
    Join Date
    Jan 2008
    Location
    Lincoln, Nebraska
    My Bikes
    '07 Trek 1500, '08 Surly Cross Check, '09 Masi Speciale Sprint custom build
    Posts
    4,568
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's bigger than two CO2 cartridges and the nozzle. Useless. Might cost less, but I'll tell you what does cost a lot: The beat down you get when someone catches you nabbing their air.

    Spend $15, buy the CO2 system. Or spend $30 and get a usable frame pump.

  13. #13
    Faster but still slow slowandsteady's Avatar
    Join Date
    Jun 2006
    Location
    Jersey
    My Bikes
    Trek 830 circa 1993 and a Fuji WSD Finest 1.0 2006
    Posts
    5,979
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Seems like it would be illegal somehow. Stealing air? Hm..... Is that theft or vandalism?
    "Ride lots." -- Eddy Merckx

  14. #14
    Je pose, donc je suis.
    Join Date
    Mar 2008
    Location
    Back. Here.
    Posts
    2,898
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by sggoodri View Post
    Or be an even bigger one and steal it from 5 other bikes....
    Hahaha! Half full, three-quarters, 7/8 ... a new twist on Zeno's paradox.

  15. #15
    JRA
    JRA is offline
    Senior Member JRA's Avatar
    Join Date
    Jul 2002
    Location
    St. Louis
    Posts
    945
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CB HI View Post
    A road-morph pump is pretty easy to get up to 100 psi.
    The above idea is a waste of pannier space.
    I know. I was being facetious.
    "It may even be that motoring is more healthful than not motoring; death rates were certainly higher in the pre-motoring age."- John Forester
    "Laws cannot be properly understood as if written in plain English..."- Forester defending obfuscation.
    "Motorist propaganda, continued for sixty years, is what has put cyclists on sidewalks." - Forester, sociologist in his own mind
    "'There are no rules of the road on MUPs.' -John Forester" - Helmet Head quoting 'The Great One'

  16. #16
    Senior Member hotbike's Avatar
    Join Date
    Dec 2006
    Location
    Long Island, New York
    My Bikes
    a lowrider BMX, a mountain bike, a faired recumbent, and a loaded touring bike
    Posts
    2,542
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    No, the air is going to flow from your bike tire into the car tire.
    Useless unless you ride MTB off road, where you're not going to find a car handy , anyway.
    http://www.flickr.com/photos/11629987@N02/sets/72157639939606343/

  17. #17
    Senior Member
    Join Date
    Feb 2010
    Posts
    397
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Pedaleur View Post
    Hahaha! Half full, three-quarters, 7/8 ... a new twist on Zeno's paradox.
    First fill up from the cruiser, high volume will mean most of their pressure will transfer. Then work your way up the line, leaving the highest pressure tire for last.

  18. #18
    Banned.
    Join Date
    Mar 2005
    Location
    Honolulu, HI
    Posts
    11,420
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JRA View Post
    I know. I was being facetious.
    OK, but it did sound just like those who actually do whine about hand pumps.

Posting Permissions

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