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Discussion Starter #1
ok how do you measure your RTI

There are 2 versions that are told for distance travelled - measure from the centre of the ramped wheel straight to the ground or from the centre of the wheel to the start of the ramp.

Which one is the most common or correct

Rhino
 

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Discussion Starter #3
yeh i know that the ramp means jack but i just want to know as there is 2 different opinions and either way it makes a big difference to your bragging rights.
I'm building a adjustable ramp 20-30 degrees and everone has there own opinion.

Rhino
 

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Since the vehicle wheel base is used as part of the calculation, I'd think you'd use from the center of the wheel (measured at 90 degrees to the ramp, not vertically) to the end of the ramp. Just my .02
 

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Discussion Starter #5
I thought someone would have to know - or have i bored everyone with my thread


Rhino
 

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measure from the centre of your wheel to the start of the ramp..........
ex.
-my samis w/b is 79.9"
-on a 20* ramp
-say i go up 42" from the centre of my wheel to the start of the ramp
-so here is how to calculate it.......
-42"(distance up the ramp) devided by 79.9(or your w/b) times 1000 and thats your score

-42/79.9x1000=525.7...........my score is 525.7

L8R: <IMG SRC="smilies/roxy.gif" border="0">
 

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Originally posted by BrianR:
<STRONG>Since the vehicle wheel base is used as part of the calculation, I'd think you'd use from the center of the wheel (measured at 90 degrees to the ramp, not vertically) to the end of the ramp. Just my .02</STRONG>
This is correct, but the problem is comparing your measurments to ones taken on a different ramp. Measuring from the point on the ramp verticaly to the ground and plugging it into a simple Trig formula (which I can't remember at the moment) will let you accurately compare the RTI score from any ramp to one taken on a standard 20* ramp. or any angle you want.

And FWIW, RAMPING IS NOT USELESS. It is an excellent tool for finding out problems with any mods you have made. You can see what may be binding, or if brake lines are long enough, etc. Much easier with a ramp than while on the trail. I agree that a high RTI score should not be your goal, you can make a pretty dangerous trail rig if all your mods are designed just for ramping.
 

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Originally posted by FAT 65L:
<STRONG>ok how do you measure your RTI

Rhino</STRONG>
LIKE THIS <IMG SRC="smilies/biggrin.gif" border="0"> <IMG width=201 height=141 SRC="http://www.pirate4x4.com/ubb/uploads/ramp_pontiac.jpg">
 

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Originally posted by LOSTONE.:
<STRONG>LIKE THIS <IMG SRC="smilies/biggrin.gif" border="0"> <IMG width=201 height=141 SRC="http://www.pirate4x4.com/ubb/uploads/ramp_pontiac.jpg"></STRONG>
What's the board for?

<IMG SRC="smilies/tongue.gif" border="0">
 

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Originally posted by Jared:
<STRONG>What's the board for?

<IMG SRC="smilies/tongue.gif" border="0"></STRONG>
Its not a board! Its one of a set of aluminiun ramps I made to get my ATV into my trailer. I wanted to test there strength.

Oh and is this better? <IMG SRC="smilies/biggrin.gif" border="0">

<IMG width=241 height=136 SRC="http://www.pirate4x4.com/ubb/uploads/ramp_pontiac2.jpg">
 

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mlozano said:
Hello All.

We have the same discussion here in chile.

I don´t know which one is the correct way to measure RTI. 90º to the ramp or 90º to the floor.



Please let me know.

Thanks

Mariano Lozano
Santiago, CHILE
This one, it is the contact point of your tire to the ramp. :D
 
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