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Speedo Gears For Calibrating?

Discussion in 'Early CJ5 and CJ6 Tech' started by mickeykelley, Jan 18, 2017.

  1. Jan 18, 2017
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    Are there different speedo gears for the tranny to compensate for taller tires. I put on 215/R85 16 and now the speedo says 40 but iPhone says 42. Is there an adjustable steering stop?
     
    mickeykelley, Jan 18, 2017
    #1
  2. Jan 18, 2017
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Dana 18 Speedometer Gear 22 Tooth Willys Cj2A Cj3A M38 M38A1 Cj5 45-71 18670.33 | eBay
    Speedometer gear fits 54-62 willys wagon 4:27 gear ratio | eBay

    Might be tricky finding the right one, I dunno.

    But 5% is not a big variation in a speedometer. Even tire pressure could do that.

    Have you checked at different speeds, or better, compared the odometer over a measured mile? ( The state DOT may have one laid out someplace.)

    Yes the steering stops are adjustable, if you cut the weld on the thread.
     
    PeteL, Jan 18, 2017
    #2
  3. Jan 19, 2017
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Get rid of the iphone, problem solved.

    Seriously, mechanical speedos are not dead on unless they've been specially calibrated (i.e. police cars), IIRC most are +/- 3 MPH anyhow. You won't find any special gears to fix it anyhow.

    H.
     
    Last edited: Jan 19, 2017
    Howard Eisenhauer, Jan 19, 2017
    #3
  4. Jan 19, 2017
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    +2 I wouldn't even worry about it . mine has been off for years
     
    Twin2, Jan 19, 2017
    #4
  5. Jan 19, 2017
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    That was my first thought too, but I didn't want to be the one to say it. :D

    Who ya gonna believe, your faithful Jeep or your lyin' iphone???
     
    PeteL, Jan 19, 2017
    #5
  6. Jan 19, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I seriously wouldn't worry about it either. Going by the radar trailers the cops have out my '06 Ram is 1 mph off.

    For the steering you might consider getting wheel spacers. Can you post a picture of the new tires? You know we'd love to see it. :)
     
    Glenn, Jan 19, 2017
    #6
  7. Jan 19, 2017
    mickeykelley

    mickeykelley Well-Known Member

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    PeteL, very strange thing. When I view this thread on my iPhone, for some reason there are red devil horns drawn in on your avatar. Not sure why.
     
    mickeykelley, Jan 19, 2017
    #7
  8. Jan 19, 2017
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    I just want to say for the official record, that I for one welcome our new cyber-lords.
    :whistle:
     
    PeteL, Jan 19, 2017
    #8
    BobH likes this.
  9. Jan 19, 2017
    mickeykelley

    mickeykelley Well-Known Member

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    mickeykelley, Jan 19, 2017
    #9
    Glenn and FinoCJ like this.
  10. Jan 19, 2017
    mickeykelley

    mickeykelley Well-Known Member

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    Suck up.
     
    mickeykelley, Jan 19, 2017
    #10
  11. Jan 19, 2017
    Focker

    Focker That's a terrible idea...What time? Staff Member

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    Tip - If you click on the post number (in this case #309) you can copy and paste a link to that specific post.

    BTW...I like the tires.
     
    Focker, Jan 19, 2017
    #11
  12. Jan 19, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member

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    Glenn, Jan 19, 2017
    #12
  13. Jan 19, 2017
    mickeykelley

    mickeykelley Well-Known Member

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    Learned something new. Thanks.
     
    mickeykelley, Jan 19, 2017
    #13
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