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Thread: Adjusting the speedometer for larger tyres?

  1. 5th July 2011, 09:58 PM #31
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    Slunnie
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    Quote Originally Posted by Zute View Post
    A GPS will give a false reading when descending or ascending hills. eg, descending will show a faster speed. All to do with the triangulation.
    So a GPS is only good on level ground.
    GPS should allow for that as long as it dials into more than 2 satelites.
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    Slunnie


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  2. 5th July 2011, 10:04 PM #32
    Zute Guest
    You would think so, but Ive seen mine read 126km/h when the speedo was showing 104km/h (south down Conroys gap. Near Yass )
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  3. 5th July 2011, 10:04 PM #33
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    Now I'm understanding a bit more. I've been asked heaps of times which spec Truspeed do I have. My box doesn't have any indications on it as to the options.

    I don't know what the differences are, but my unit came from Iceland, not the US. Here is my unit from Samras. If anybody can translate the website, this may also be a good starting point.
    Samras ehf - TruSpeed - hraðamælabreytir





    I don;t know how this is different to the ones from the US at Superlift, they look the same, but I don't know what the deal is with the part numbers.

    TruSpeed™ Speed Sensor Recalibrator · Superlift · www.superlift.com

    Cheers
    Slunnie


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  4. 5th July 2011, 10:23 PM #34
    twr7cx
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    Quote Originally Posted by Slunnie View Post
    I've been asked heaps of times which spec Truspeed do I have. My box doesn't have any indications on it as to the options.

    I don't know what the differences are, but my unit came from Iceland, not the US. Here is my unit from Samras. If anybody can translate the website, this may also be a good starting point.
    Samras ehf - TruSpeed - hraðamælabreytir

    I assume your box doesn't have the "Type B" written on it like the one in the picture you've linked?
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  5. 5th July 2011, 10:50 PM #35
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    Quote Originally Posted by twr7cx View Post
    I assume your box doesn't have the "Type B" written on it like the one in the picture you've linked?
    My one is marked as a "type B"
    Cheers
    Slunnie


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  6. 6th July 2011, 08:11 AM #36
    Tombie Guest
    Mines Type B also
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  7. 23rd November 2011, 09:42 PM #37
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    ZippoParis
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    Hi all,

    Any ideas where I can get the Truspeed model that actually fits the Discovery 2 2000 td5?

    The webpage (superlift) has no listing for a Land Rover of any kind, let alone the Discovery 2.

    Most of the links below <--> above are pretty much dead now.

    What about Mark's Adapters? Anyone know if his speed corrector works on the Discovery?

    Cheers.
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  8. 24th November 2011, 06:25 AM #38
    twr7cx
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    Contact Michael Samootin at sales@4x4de.com.au . I got mine two weeks ago from him when his last order arrived.
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  9. 24th November 2011, 09:00 AM #39
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    @twr7cx

    Many thanks. Email on it's way.

    Cheers.
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  10. 24th November 2011, 12:15 PM #40
    e3j
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    Well, I dunno......I have the opposite problem to the rest of you.....when my '02 Disco 2 td5 auto reads 100 on the speedo, the gps reads 103! This is on standard tyres. Mind you I'd better not complain, 'cos that makes it technically illegal!

    Seriously though, can anyone explain why this would happen?
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