Airless tires...

Discussion in 'Automotive Electronics' started by cmartinez, Jul 17, 2015.

  1. cmartinez

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  2. Alec_t

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    Solid tires on vehicles were common way back in the 1920's.
     
  3. cmartinez

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    Yeah, but they were block solid, weren't they? And way too hard to make for a comfortable ride.
     
  4. ian field

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    That was with the polymer technology available way back then.

    A few years ago I tried some foam core bicycle tyre's - the tread wore through in no time flat, exposing the foam which promptly soaked up rain water.

    It made for a very squelchy ride!
     
  5. GopherT

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    Michelin is the leader in this technology with products already on the market in non-highway applications. Much lighter weight, lower mainenance and no risk of user running them under inflated dangerous conditions. The highway-auto versions expected in the next 5 years. Brand name is Tweel.

    http://www.michelintweel.com
     
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  6. MikeML

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    I was peripherally involved with a world land-speed record in the 1980s out on the Bonneville Salt Flats. The car ran on four solid Magnesium alloy wheels (no tires) at 500+mph. Tires won't stay on a rim at that speed due to centrifugal force.
     
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  7. cmartinez

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    Was it the Blue Flame? What role did you play?
     
  8. RichardO

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    I remember a magazine article fom the 1960's in Mechanix Illistrated, Popular Mechanix or something like that. The author had built a jet powered go-cart! He told about how at high speeds the tires would grow in diameter. :eek: He also said how the speeds seemed higher than they actually were due to the closeness to the ground.
     
  9. tjohnson

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    That makes sense because of centrifugal force.
    I wonder why this would be?
     
  10. cmartinez

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    I'm guessing it's a matter of perspective. If the pilot is closer to the ground, he'd get a much stronger impression of how fast the ground is traveling below his feet
     
  11. shortbus

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    The slicks on a dragster do that, effectively changing the gear ratio of the rear axle. This allows them to use a single speed in and out transmission. The slicks are purposefully made to do the diametric 'growing'.
     
  12. BR-549

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    I wonder why this would be?

    Because you are moving over and relative to a surface.

    The perceived speed will be inversely proportional of the distance to that surface.

    The closer you get to the surface, the more movement you see. Your brain interprets this as going faster.

    Just dropping altitude will seem to speed you up.
     
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  13. BR-549

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    I have been reading about similar products from several companies for quite a while now.

    I haven't seen one on the road yet. Course I have not been on the road.

    I always wondered if that open structure would make noise.

    And what do they sound like on the edge warning ridges of the road?
     
  14. BR-549

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  15. Donald Krambeck

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    Jul 28, 2015
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    Accidental post, sorry about that!
     
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  16. GopherT

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    - Accidental phone call is "Pocket dialing".
    - Regrettable communication with old girlfriend/boyfriend while Impaired is "Drunk texting"

    Now
    If there is not already a term for accidental posting, what should it be?

    I'm sure @cmartinez an help
     
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  17. cmartinez

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    o_O I think @Hypatia's Protege can be far more helpful than me at finding the correct word for that event....

    And BTW... wouldn't butt dialing be a better term than pocket dialing?
     
  18. GopherT

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    I wouldn't use such a vulgar term but I suppose it might be used by those prone to use less formal language. Lets see what HP has to say.
     
  19. cmartinez

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    Alright... so as not to hurt anyone's sensibilities... let's call it tushie dial then... Emoji Smiley-51.png
     
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  20. Hypatia's Protege

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    Well... When I find it convenient to merely delete a post and start over following said misstep I tend to supply the "reason for deletion" prompt with one of:

    "inadvertent submission"
    or
    "premature submission"

    A bit pedestrian to be sure... But there it is...;)

    When it happens to me - although rather 'sanitized'; "Git who forgot to lock keyboard again syndrome", represents the 'gist' of my sentiments --- Apologies that such seems to be of the 'wrong' verbal form:rolleyes:;)

    Best regards
    HP
     
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