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  1. #1
    Join Date
    Oct 2017
    Location
    Oxford
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    1,209

    IVA Question - Side Repeaters

    IVA OPINIONS PLEASE!

    I need to position my side repeaters.

    Here is the IVA Regs Drawing



    My understanding of that drawing is that the side repeater does not get checked from the front of the vehicle. As long as it is visible from an angle of 5 degrees wider than the side of the car up to 60 degrees its a pass. Correct??

    So here is a sketch of the side of my car from above with some angles and dimensions as I see it interpreting the regs.



    The 148mm dimension is from the side of the body to the outside of the arch at the same height off the ground as the proposed side repeater position.
    So as I see it to ensure the side repeater is visible at a 5 degree angle from behind the car/rear wheel arch, I need to position the centre of the side repeater at 1700mm forwards of the dimensioned point on the edge of the arch, correct?

    This is the proposed position on the body.








    Do we think this will be a pass?
    Classic Replica Viper IVA passed 25th March 2021, Sold September 2021.
    TVR Chimaera restoration project in progress

  2. #2
    Join Date
    Sep 2007
    Location
    Peak District
    Posts
    411
    I put mine directly above the vent and they were OK.

  3. #3
    Join Date
    Oct 2017
    Location
    Oxford
    Posts
    1,209
    Quote Originally Posted by Mark_Robinson View Post
    I put mine directly above the vent and they were OK.
    Did they measure during the test or just visual inspection?
    Classic Replica Viper IVA passed 25th March 2021, Sold September 2021.
    TVR Chimaera restoration project in progress

  4. #4
    Join Date
    Oct 2017
    Location
    Oxford
    Posts
    1,209
    Quote Originally Posted by Mark_Robinson View Post
    I put mine directly above the vent and they were OK.
    Can you get me a couple of dimension from your car please?

    How far does the rear arch stick out from the body just behind the door at the same height as your repeater?

    And then what is the dimension from that point on the outer edge of the rear arch to the back edge of the repeater?

    Basically to compare against the 1700mm and 148mm dimensions on my triangle....
    Classic Replica Viper IVA passed 25th March 2021, Sold September 2021.
    TVR Chimaera restoration project in progress

  5. #5
    Join Date
    Nov 2012
    Location
    Lanarks
    Age
    65
    Posts
    706
    Pull a string along the green line from your photo
    Measure angle to the side of your car
    5 degree is all that's needed unless someone on here can say otherwise.


    I think my unobtrusive position meets the criteria .....fingers crossed.




  6. #6
    Join Date
    Oct 2017
    Location
    Oxford
    Posts
    1,209
    I understand the 5 degrees, that is how I have worked out the 1700 dimension in the triangle I have drawn in that sketch which is basically the same as the green line you have drawn.

    But if the rear arch is not in play (look at the IVA drawing as it does not extend down the rear half of the car) then I can position differently.
    Classic Replica Viper IVA passed 25th March 2021, Sold September 2021.
    TVR Chimaera restoration project in progress

  7. #7
    Join Date
    Sep 2007
    Location
    Peak District
    Posts
    411
    It was just a visual inspection

    To the centrepoint of the lens, its
    9cm from the left hand edge of the vent
    5cm above the top of the vent.

    https://photos.app.goo.gl/8aK5rreFb2FuTQ8x6

    Cheers,
    Mark

  8. #8
    Join Date
    May 2020
    Location
    west sussex
    Posts
    127
    I personally don't like the side repeater above vent so fitted mine lower and to rear of side vents.

    Examiners calculated visibility at 7% after some complicated maths that even confused the 4, yes 4 testers that were looking at my Pilgrim Sumo.
    Attached Images Attached Images

  9. #9
    Join Date
    May 2004
    Location
    Perth
    Posts
    4,687
    Now you see it...



    Now you don't...

    Cheers, Clive

    (If I'm not here, I'm either in my new workshop or on the golf course!)

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