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Help guess my RTI!

Discussion in 'The Garage' started by koldsimer, Dec 8, 2005.

  1. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    After constant tweaking and fine tuning, I think I have my suspension working pretty well. Since I dont have an RTI ramp, I was wondering what I am ramping in these pics. Any ideas? The wall was probably 18-20* and the back wheel was 52 inches off the ground. Care to take a guess?

    flex 014.jpg

    flex 016.jpg

    flex 017.jpg

    flex 009.jpg
     
  2. BranndonC

    BranndonC 3/4 ton status

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    nice pics! No idea how high, but looks good, i'm going to have some of those later this month probably
     
  3. muddybuddy

    muddybuddy 3/4 ton status

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    :bow: very nice. no idea what the rti would be tho
     
  4. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    go to 4lo.com they have a RTI calculater on there.
     
  5. 79k20350

    79k20350 3/4 ton status

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    what is your wheelbase? stock is 115 right? i figured you were a little longer, so with 117 your rti on a 20* ramp would be 1299
     
  6. Leper

    Leper 1/2 ton status

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    Very nice K. Soon we will be very similar on that.
     
  7. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    Thanks for all the input guys. I think the 1299 estimate is off.... I wish I had those kinds bragging rights. I would have guessed it was about 800-900 but I have no real idea. I wonder how much further I could have gone... the truck hit the building.
     
  8. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    I'm also thinking that ledge was only about 15*, maybe less.
     
  9. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    with the stock wheelbase of 106.5" and the tire 52" above the ground, the RTI is 1428 on a 20* ramp.

    that is some awesome flex, what do you have for suspention?
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    x2

    Rene
     
  11. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    Thanks Man. I've got 6" BDS springs up front with a zero rate, shackle hanger moved forward, longer shackles (6.25") and furd shock towers with 14" shocks. In the back i have ord's flip (swapped sides) with 4" superlift 56'ers with the overload removed and 6" long shackles.
     
  12. 79k20350

    79k20350 3/4 ton status

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    i didnt realize the wheel base was that short:D remember i got/ had a longbed. but yeah the 14XX was definetly right if you were 52" off the ground
     
  13. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    Not being able to believe the RTI calculator on 4lo, I went back to the ramp with my angle finder and tape to get some measurements. My wheel was 51" off the ground. I pulled a straight line from the bottom of my wheel on a 20* plane. Total length was just over 148". This is within one inch of what it said my amount should be. So, am I to believe that my blazer is capable of 1300+ on an RTI?! Holly sheet if it's true!
     
  14. txfireman110

    txfireman110 1/2 ton status

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    As long as you now two of the factors, ie: wheelbase, and how high one tire can go off the ground before any other tire loses contact, you can solve for RTI on this site!
    http://www.offroaders.com/info/tech-corner/rti.htm
    The calculator is near the middle of the page. Enter a degree for a "ramp", and it will give RTI for that particular Degree of slope.
     
  15. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    That uses the same formula that 4lo uses. It also told me i was ramping 1350+! Does anybody have an idea what is the max rti they remember being put up by a leaf spring blazer?
     
  16. RustBuket

    RustBuket 1/2 ton status

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    Remember you're talking about a 1300 on a 20 degree ramp. It will be less on a 30 degree ramp. On a 30 degree ramp you're doing pretty much 1000 on the nose as far as I can calculate.
     

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