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Calipers - why are some to the front & others to the back of the disc?

Discussion in 'Handling' started by IanL-S3, Apr 21, 2005.

  1. IanL-S3

    IanL-S3 Member

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    I know i promised not to ask silly questions..but....here we go again.

    I for some reason thought that the calipers were always positioned to the front of the car on the front discs ,however today i noticed a jag xk8 with the calipers towards the back of the car on the front discs.

    Is there any techy geeky reason for this? or does it not really matter and i should go and find something more interesting to concern myself with.

    Cheers
     
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  3. RichA3Turbo

    RichA3Turbo ...Watching you!
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    [ QUOTE ]
    I know i promised not to ask silly questions..but....here we go again.

    I for some reason thought that the calipers were always positioned to the front of the car on the front discs ,however today i noticed a jag xk8 with the calipers towards the back of the car on the front discs.

    Is there any techy geeky reason for this? or does it not really matter and i should go and find something more interesting to concern myself with.

    Cheers

    [/ QUOTE ]

    It really makes no difference... If you think about it the discs is moving the same direction no matter where the calliper is and the force will be the same no matter where it is also. The A4/S4/RS4/A6/S6/RS6 has the callipers on the rear also
     
  4. Japper

    Japper Ibis S3 Fan Club

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    [ QUOTE ]
    [ QUOTE ]
    I know i promised not to ask silly questions..but....here we go again.

    I for some reason thought that the calipers were always positioned to the front of the car on the front discs ,however today i noticed a jag xk8 with the calipers towards the back of the car on the front discs.

    Is there any techy geeky reason for this? or does it not really matter and i should go and find something more interesting to concern myself with.

    Cheers

    [/ QUOTE ]

    It really makes no difference... If you think about it the discs is moving the same direction no matter where the calliper is and the force will be the same no matter where it is also. The A4/S4/RS4/A6/S6/RS6 has the callipers on the rear also

    [/ QUOTE ]

    It would shift a little more weight rearwards though /ubbthreads/images/graemlins/grin.gif
     
  5. The Slug

    The Slug Active Member
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    Wouldn't be to do with any cooling effect then?????
     
  6. OutLore

    OutLore VOIP Dude

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    [ QUOTE ]
    [ QUOTE ]
    Wouldn't be to do with any cooling effect then?????

    [/ QUOTE ]

    To be honest i think it just down to the suspension setup and where the brakes wont be in the way!

    Rich

    [/ QUOTE ]

    Surely then they would always be at the bottom?

    HAve done with it - leading and trailing calipers front and rear /ubbthreads/images/graemlins/lol.gif
     
  7. Charlies604

    Charlies604 Member

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    Surely you want the caliper to compress into the arm not pull off of it??
     
  8. RichA3Turbo

    RichA3Turbo ...Watching you!
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    It makes bugger all difference where it is... Rotational force is the same all the way round the disc.. It will pull and push with equal force.

    Rich
     
  9. [ QUOTE ]
    It makes bugger all difference where it is... Rotational force is the same all the way round the disc.. It will pull and push with equal force.

    Rich

    [/ QUOTE ]

    exactly the main diff would be the force transfered to the suspension or the twisting (sear ) force
     
  10. [ QUOTE ]
    [ QUOTE ]
    [ QUOTE ]
    I know i promised not to ask silly questions..but....here we go again.

    I for some reason thought that the calipers were always positioned to the front of the car on the front discs ,however today i noticed a jag xk8 with the calipers towards the back of the car on the front discs.

    Is there any techy geeky reason for this? or does it not really matter and i should go and find something more interesting to concern myself with.

    Cheers

    [/ QUOTE ]

    It really makes no difference... If you think about it the discs is moving the same direction no matter where the calliper is and the force will be the same no matter where it is also. The A4/S4/RS4/A6/S6/RS6 has the callipers on the rear also

    [/ QUOTE ]

    It would shift a little more weight rearwards though /ubbthreads/images/graemlins/grin.gif

    [/ QUOTE ]
     

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