Re: OT: Nitrogen filled tires

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,CLI1_
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


.

Relevant Pages

  • Re: OT: Nitrogen filled tires
    ... No, they spin, relative to the wheel, for two reasons: angular ... acceleration and wind resistance. ... it's a really big leap from wheel spinners to ram air turbines. ... The wheel spinners would have an additional source of power, ...
    (sci.electronics.design)
  • Re: Rain and the laws of physics
    ... wheel is accelerating towards the axle at all times. ... the acceleration ... gravitational force directed toward the sun. ... Earth and Sun's combined gravity. ...
    (rec.motorcycles)
  • Re: OT: Nitrogen filled tires
    ... No, they spin, relative to the wheel, for two reasons: angular ... acceleration and wind resistance. ... it's a really big leap from wheel spinners to ram air turbines. ... The wheel spinners would have an additional source of power, ...
    (sci.electronics.design)
  • Re: Acceleration
    ... Gareth wrote: ... timely acceleration data. ... I have a wheel speed sensor that picks up around 40 to 100 ... Measure the time between pulses, as you are doing, and compute the differences. ...
    (comp.dsp)
  • Re: Acceleration
    ... timely acceleration data. ... I have a wheel speed sensor that picks up around 40 to 100 ... This has capture channels that capture a 16bit timer ...
    (comp.dsp)