Mopar "handling line" Chart

[Bjkadron]

Does anyone know where I can get the Mopar/Direct connection "handling line" chart? Like the one in the background of this picture

https://static1.pt-content.com/images/pt/2010/10/kitcar5-1.jpg

I have looked all over and I can't find it!

any help would be appreciated!

[Bryce]

Sounds cool. I will ask my mopar friends when I go to SEAM with them.

[Bjkadron]

Well, I found out that it is in The "Mopar Performance Track Modifications Book" P5249959. But I think they quit printing it.

It is a plotted over/understeer line for helping select spring/swaybar rates based off the F/R weight distribution.

[High Plains Mopars]

Mopar Oval Track Chassis book is one source. Mike Martin's book Performance Handling for Mopars is another source. It is also sometimes called Mopar Suspensions.

Sounds like its time to hit Amazon.

BTW, it doesn't exactly tell you the spring/sway bar rates. What it tells you is that for a particular weight distribution, you need to acheive a certain roll couple percentage. It is then up to you to figure out what combination of t-bars and s-bars get you that roll couple. So, to figure all that out you need to calculate sway bar rates, t-bar rates, leaf spring rates, and applied motion rates as a result of any of the particular motion ratios of those selected components. It also is a guideline and you may need to further refine you combo to get it exactly neuteral to match you particular car adn driving style, but it is a very good starting point. We also have the issue of only having a few decent sized torsion bars available out there, so it almost becomes an exercise of custom building rear leafs and sway bars to set up the balance of the roll couple.

I'd also suggest checking out Steve Smith Autosports Publishing and maybe picking up Advanced Race Car Suspension Development and its associated work book, or Building the Pro Stock/Late Model Sportsman. These both have a lot of the foundation work you'll need to calculate everything in the mopar books tell you about plus more info on other theories and information, COg, COG hieght, polar moment of inertia, etc. While they tend to be coil spring/chevy focused, they do have lots of good info in them that can be applied to any chassis.

[Bjkadron]

Mopar Oval Track Chassis book is one source. Mike Martin's book Performance Handling for Mopars is another source. It is also sometimes called Mopar Suspensions.

Sounds like its time to hit Amazon.

BTW, it doesn't exactly tell you the spring/sway bar rates. What it tells you is that for a particular weight distribution, you need to acheive a certain roll couple percentage. It is then up to you to figure out what combination of t-bars and s-bars get you that roll couple. So, to figure all that out you need to calculate sway bar rates, t-bar rates, leaf spring rates, and applied motion rates as a result of any of the particular motion ratios of those selected components.

I'd also suggest checking out Steve Smith Autosports Publishing and maybe picking up Advanced Race Car Suspension Development and its associated work book, or Building the Pro Stock/Late Model Sportsman. These both have a lot of the foundation work you'll need to calculate everything mopar books tell you about plus more info on other theories and information. While they tend to be coil spring/chevy focused, they do have lots of good info in them


Ahhh! Thank you! That is what I meant to say but the words "roll couple" were eluding my grasp. Thanks for the suggestions. I'll look them up.

[High Plains Mopars]

Trying to figure out how to convert a pdf to an image file, and I can post a copy

[BillyShope]

Mopar Oval Track Chassis book is one source. Mike Martin's book Performance Handling for Mopars is another source. It is also sometimes called Mopar Suspensions.

Sounds like its time to hit Amazon.

BTW, it doesn't exactly tell you the spring/sway bar rates. What it tells you is that for a particular weight distribution, you need to acheive a certain roll couple percentage. It is then up to you to figure out what combination of t-bars and s-bars get you that roll couple. So, to figure all that out you need to calculate sway bar rates, t-bar rates, leaf spring rates, and applied motion rates as a result of any of the particular motion ratios of those selected components. It also is a guideline and you may need to further refine you combo to get it exactly neuteral to match you particular car adn driving style, but it is a very good starting point. We also have the issue of only having a few decent sized torsion bars available out there, so it almost becomes an exercise of custom building rear leafs and sway bars to set up the balance of the roll couple.

I'd also suggest checking out Steve Smith Autosports Publishing and maybe picking up Advanced Race Car Suspension Development and its associated work book, or Building the Pro Stock/Late Model Sportsman. These both have a lot of the foundation work you'll need to calculate everything in the mopar books tell you about plus more info on other theories and information, COg, COG hieght, polar moment of inertia, etc. While they tend to be coil spring/chevy focused, they do have lots of good info in them that can be applied to any chassis.
If you already have the Millikens' Race Car Vehicle Dynamics,this would be the equations at the top of page 683.
http://www.racetec.cc/shope

[Bjkadron]

If you already have the Millikens' Race Car Vehicle Dynamics,this would be the equations at the top of page 683.
http://www.racetec.cc/shope

Well thank you! I'll just get it out of there then. I have had that book for a while.