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Hub Cap Differences......(by DavidH....)

Discussion in 'Body' started by David H, Sep 27, 2018.

  1. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    To trouble a little more:confused:. What do others understand around the outside curve of a genuine kombi hubcap:eek:.
    Warning......This is Nerd material!!:(
    Cheers
     
  2. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,082
    Location:
    Seven hills
    :confused::confused: Warning Mind explosion:eek: Don't quite know what your asking.!
     
  3. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    Some have a wider flatter edge on the rim side. Other version has less edge on rim side. Old Bar check today is about half and half. I’ll post up some photos when I get home.
    Cheers
     
    Last edited: Oct 1, 2018
  4. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    15mm to start of curve
    15 to curve start.JPG
    12mm to start of curve
    12 to curve start.JPG Hubcaps posted.JPG
    Sharper radius on left hand one. Told you it was nerd material:rolleyes:.
    Cheers
     
  5. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,082
    Location:
    Seven hills
    Thanks David I under stood when your last posted #143 I think type 3 (notch back etc) have a wider lip on the hubcaps. I have to check my chrome ones know to see what they are.:rolleyes:o_O
     
  6. Grantus

    Grantus Well-Known Member

    Messages:
    16,033
    Location:
    Southern ACT
    Have you ever seen those flat measuring stick things?

    I think they are called “rulers”....:rolleyes:
     
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  7. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,082
    Location:
    Seven hills
    He doesn't work in that department of Bunning;)
     
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  8. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    Only used for measuring flat stuff;). Not curves:D.
    Ah Kimosabe. You have taken the rock. It's my understanding that Kombi hubcaps have the soft curve & beetles the sharp curve. Worked this out when I bought a hubcap clock (with wide style) for $40 when hubcaps are $30:confused:. Beetle hubcaps cheap & fit Kombis. Kombi hubcaps expensive cos the market can pay:mad::(.
    & beetle hubcaps real cheap;):cool:. Chromed:D.
    Cheers
     
    Last edited: Oct 1, 2018
  9. Grantus

    Grantus Well-Known Member

    Messages:
    16,033
    Location:
    Southern ACT
    Sorry. I thought you were measuring the 12-15mm flat bit.......to the start of the curve. :oops:
     
  10. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    That's what I was doing! 3mm diff to the start of radius that ends @ the same outside edge. Nerd s**t:eek:. The 12/15 bit is what accommodates the softer radius & where the 'spare bit' goes:oops:. Outside curve the same as it starts in the same spot. It's how the inside finishes;):rolleyes:.
    Cheers
     
  11. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,082
    Location:
    Seven hills
    I think you need to join OSF and my self with OCDo_O:confused::eek: You have early signs of it:(:rolleyes:.
    To buy a clock mechanism is about $10 bucks so you got a bargain.
     
  12. OSF

    OSF Well-Known Member

    Messages:
    1,085
    Location:
    Sutherland NSW
    Hmmmm. Not based on anything logical at all but ....... I thought the wider lip ones were later model.

    Don't know why I thought this. Just did.
     
  13. OSF

    OSF Well-Known Member

    Messages:
    1,085
    Location:
    Sutherland NSW
    I suppose I thought VW would probably just do the same hubcaps across the range for simplicity/ease of production etc. This might have changed a bit across the years though, if outsourced or something.

    Just a theory.
     
  14. Grantus

    Grantus Well-Known Member

    Messages:
    16,033
    Location:
    Southern ACT
    Probably also a variation between German ones, those from South America, and those from any other aftermarket fabricator.....:rolleyes:
     
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  15. MAP77

    MAP77 Well-Known Member

    Messages:
    455
    Location:
    Campbelltown NSW
    The wider lipped ones go further when you throw them as a frisbee as it has a more efficient aerodynamic shape.

    This is because air flows rapidly over the wider lip, which throw the air down toward the ground, generating an upward force called lift that overcomes the hubcaps weight and holds it in the air!
     
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  16. Kai

    Kai Well-Known Member

    Messages:
    4,743
    Location:
    Sydney, NSW
    Kombis have the thicker lip, 4 stud beetles, type 3 , kg have the thin lip

    251 601 151 A
     
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  17. OSF

    OSF Well-Known Member

    Messages:
    1,085
    Location:
    Sutherland NSW
    An whilst the increased width of the hubcap potentially creates an increased form drag coefficient, this is offset by the relative air pressure differential above and below the hubcap as noted by MAP77.

    I.e. The wider lipped hubcaps will have a slightly slower flight speed but fly higher than the thin lipped ones, ultimately resulting in further maximum horizontal flight distance gained.

    Highly polishing said hubcap will then further decrease surface drag, potentially increasing flight speed and height, whilst heavily dimpled caps will allow a nice amount of spin should the flight of said hubcap require a nice turn.


    P.S. You started this David.
     
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  18. Grantus

    Grantus Well-Known Member

    Messages:
    16,033
    Location:
    Southern ACT
    They all fly better and further than an alloy wheel though..... no matter how much force and spin you get into in before release.
     
  19. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    Oh My!! The wider lip will be no good for continuing laminer flow of air. Would 'stall' at an earlier position & cease flying.

    "increased width of the hubcap "
    Outside curve does not change width:p. Steeper 'leading edge' will create increased 'wish' of the airflow to leave the surface earlier& thus create more drag & frisbee falling short:oops:. Nice smooth leading edge is good:cool:.
    Glad I've got the Type 3 hubcaps;). They go faster:D & further.
    Cheers
     
    Last edited: Oct 3, 2018
  20. David H

    David H Well-Known Member

    Messages:
    5,176
    Location:
    newcastle
    Some need for airflow understanding needed here MAP in your logic. If it goes up quick it comes down quick & thus stalls sooner & no longer flies:(.
    Cheers
     

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