Re: OT: Nitrogen filled tires

John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:9mp5h3psmpf0que82l4cv3f11lgq95g2c1@xxxxxxx:

On 15 Oct 2007 02:18:36 GMT, Jim Yanik <jyanik@xxxxxxxxx> wrote:

John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:gn95h3tl6lc4egveuos36jpiusjs1qlcah@xxxxxxx:

On 14 Oct 2007 22:50:50 GMT, Jim Yanik <jyanik@xxxxxxxxx> wrote:

John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:pot4h3lc15mvml3rrfrsnvnn8uqiaibc5h@xxxxxxx:

On Sun, 14 Oct 2007 19:05:34 GMT, Rich Grise <rich@xxxxxxxxxxx>
wrote:

On Sat, 13 Oct 2007 17:48:51 -0700, John Larkin wrote:
On Sat, 13 Oct 2007 16:40:47 -0700, ChairmanOfTheBored
...
Compression of air requires WORK, and those spinners ONLY spin
because there is no load on them.

No, they spin, relative to the wheel, for two reasons: angular
acceleration and wind resistance. Both can deliver a substantial
amount of power, way more than it would take to pump a cubic
inch or so of air into a tire every day. WAY more.

Careful, John. If you convince him that you can get real power
from those spinners, he'll want to put slip rings on his axles and
run an electric car for free. ;-)

Cheers!
Rich

How about this?

http://www.hamiltonsundstrandcorp.com/hsc/proddesc_display/0,3809,C
LI1_ DIV22_ETI2937_PRD30,00.html

http://en.wikipedia.org/wiki/Ram_air_turbine

This is "the thing you never want to see used."

John



it's a really big leap from wheel spinners to ram air turbines.

The wheel spinners would have an additional source of power, namely
angular acceleration. That alone would be enough to pump a tire. So
the momentum disk could be hidden behind a non-spinning wheel cover.

John



well,make up a prototype,show us that it works.
Until then,I don't believe that it would work to pump up a car tire.

You define yourself by the things you refuse to believe are possible.

John

some people believe in horoscopes and magic.

show me I'm wrong.(about a wheel spinner tire pump.)
that's all I'm asking.

--
Jim Yanik
jyanik
at
kua.net
.

Relevant Pages

  • Re: OT: Nitrogen filled tires
    ... it's a really big leap from wheel spinners to ram air turbines. ... The wheel spinners would have an additional source of power, ... That alone would be enough to pump a tire. ...
    (sci.electronics.design)
  • Re: OT: Nitrogen filled tires
    ... it's a really big leap from wheel spinners to ram air turbines. ... The wheel spinners would have an additional source of power, ... That alone would be enough to pump a tire. ...
    (sci.electronics.design)
  • Re: OT: Nitrogen filled tires
    ... Imagine a reasonable-mass metal ring parallel to the wheel, ... at the center of the wheel, with the pump body fixed to the wheel. ... shaft, easily enough to keep a tire inflated. ...
    (sci.electronics.design)
  • Re: Inflating road tire, on the road - how??
    ... A long frame pump like the Zefal, Topeak, etc work good too, but the Topeak Turbo Road Morph is better as it has a short air hose on the end to make it easier to pump up the tire without tearing the valve stem off. ... If you pump with the wheel off the bike, and pump into your fist, letting the wheel swing free, it'll never happen. ...
    (rec.bicycles.tech)
  • Re: OT: Nitrogen filled tires
    ... acceleration and wind resistance. ... it's a really big leap from wheel spinners to ram air turbines. ... That alone would be enough to pump a tire. ...
    (sci.electronics.design)