Rti, fyi.. | Ford Explorer Forums - Serious Explorations

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Rti, fyi..

97awdx

Well-Known Member
Joined
April 3, 2004
Messages
393
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City, State
Lake Wallenpaupack, PA
Year, Model & Trim Level
1998 XLT
A stock 3rd gen scores a 308 on a 20 degree RTI ramp. It would be interesting to see if the ones with RB spacers get a worse or better rating.
 



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i think i know what type of ramp your talking about...

is it a ramp that you drive one side of the vehicle, and measure the flex ????


can you translate what those numbers mean for tards like myself lol !!! ???

thanks bro !!!
 






It's just a number used to determine suspension flex/articulation. A hummer H1 scores around a 340, an H3 around a 470 and a JK Rubicon is around 640.
 






It's just a number used to determine suspension flex/articulation. A hummer H1 scores around a 340, an H3 around a 470 and a JK Rubicon is around 640.

Is higher "better", or worse? As I understand it, it's a ratio of wheel height (one wheel up, 3 planted) to chassis length, but what does that really mean?
 






The term RTI stands for Ramp Travel Index. Ramp Travel index is a measurement of a vehicles suspension, frame and tire compression and the resulting flexibility of all components of the vehicle to achieve a score. This standardized test uses a ramp to find the extreme flex point of the vehicle.

The RTI test is a good indicator of how well a vehicle will do in many situations offroad while traveling over an obstacle. Ideally a vehicle will do better if it is able to keep all wheels on the ground for maximum traction. If a vehicle's suspension is too stiff (less flex), it generally will lift a wheel or possibly two wheels while attempting to get over an object resulting in a loss of contact and traction at those lifted wheels. Loss of traction is especially apparent with vehicles equipped with open differentials. In situations requiring a lot of flex locking differentials and some limited slip differentials will help maintain momentum with the opposite wheel of the axle (front or rear), however good flexibility results in more wheels on the ground, better traction and better stability of the vehicle as the suspension conforms to the terrain.

Rick on a 20° I know it's not a 3rd gen, just an example so everyone knows what an RTI ramp is.

71ramp.jpg





mounty71 had a 3rd gen out at Truckhaven and on a 30° ramp, it didn't score very well at all. I'm curious to see what the best score is for a 3rd gen as well.
 






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