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rpm's vs speed

Discussion in 'Early CJ5 and CJ6 Tech' started by dauntless_powered, Oct 1, 2004.

  1. Oct 1, 2004
    dauntless_powered

    dauntless_powered SUB COB 2024 Sponsor

    Groton, CT
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    rpm vs speed

    i finally got the tach hooked up and with my speedo so far off with the tired i disconnected it. this is what i found out tonight with my friend following me with a cb:

    3rd gear
    1500 rpm=40mph
    1800=45
    2000=50
    2300=60(give or take)

    2nd gear

    1800 rpm=34
    3000= 43 or so

    does this sound right to you guys?
    just an added thought i believ my overdrive is engaged (herm is going to fab me a shifter for my warn overdrive, currently do not have one)
     
    dauntless_powered, Oct 1, 2004
    #1
  2. Oct 1, 2004
    SandhillMike

    SandhillMike Moderator

    Archer, Fla
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    SandhillMike, Oct 1, 2004
    #2
  3. Oct 1, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Ackk! I can't stand it.

    It's RPM not RPM's or RPMs, it stands for Revolutions Per Minute, not Revolutions Per MinuteS!!!!

    Sorry for the rant, pet peeve of mine.
     
    sparky, Oct 1, 2004
    #3
  4. Oct 1, 2004
    dauntless_powered

    dauntless_powered SUB COB 2024 Sponsor

    Groton, CT
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    edited just for you sparky.......sorry i caused you to rant :beer: :D
     
    dauntless_powered, Oct 1, 2004
    #4
  5. Oct 1, 2004
    Boyink

    Boyink Super Moderator Staff Member

    Tulsa, OK
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    As opposed to spelling... R)
     
    Boyink, Oct 1, 2004
    #5
  6. Oct 1, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    That too. :rofl:

    I know better than that. R)

    My teacher errr mother raised me bettur than that. ;)
     
    sparky, Oct 1, 2004
    #6
  7. Oct 1, 2004
    dauntless_powered

    dauntless_powered SUB COB 2024 Sponsor

    Groton, CT
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    mike thanks for the website, but those numbers are really not matching mine if my overdrive is actually engaged, its telling me im doing 87 mph at 2300 rpm
     
    dauntless_powered, Oct 1, 2004
    #7
  8. Oct 1, 2004
    Southtowns27

    Southtowns27 Custom Title

    The Backhills of...
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    This link will tell you everything you need to know
    http://www.florida4x4.com/tech/gearcalc.php

    If you're using internet explorer, you might get an error message when you click submit. When it asks you if you'd like to abort the script, click NO.
     
    Southtowns27, Oct 1, 2004
    #8
  9. Oct 1, 2004
    speedbuggy

    speedbuggy Looking for a Jeep now

    Living the Good...
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    Erik- you are WAAAYYY better off than me. 3rd gear 3400 RPM for 55 MPH. I need O/D, just to cheap to spend the cash yet ;)
     
    speedbuggy, Oct 1, 2004
    #9
  10. Oct 1, 2004
    dauntless_powered

    dauntless_powered SUB COB 2024 Sponsor

    Groton, CT
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    i thought the numbers sounded pretty good, thanks for the other link info!
     
    dauntless_powered, Oct 1, 2004
    #10
  11. Oct 2, 2004
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
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    You gotta throw tire size into the equation!
     
    Posimoto, Oct 2, 2004
    #11
  12. Oct 2, 2004
    Hippo393

    Hippo393 Jeepless

    Charlotte, NC
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    OMG :rofl: :rofl: That's too funny; I get like that too. How about these:
    ATM machine
    PIN number
    VIN number
    ER room
    ect.

    AAAAAAHHHH!!!
    Thanks for the belly laugh. :D

    Erik, I too have 33s w/ overdrive, and 3rd gear in OD is essentially useless unless I'm going at least 75 MPH. Thus I'm thinking that your OD is not engaged, although I'm not sure of your gearing. 3.73?
     
    Hippo393, Oct 2, 2004
    #12
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