Technical Info

Bump Spring Rate Curve Examples

Mar 01, 2018

An overview of rate curves you get when using different styles of bump stop springs and urethanes.

FK Rod End Fitment Guide

Mar 01, 2018

FK Rod Ends offers different fitments of rod ends, this is used to improved life or reduce hysteresis in suspension systems. Off Road Racers typically use an F1 fit for a tightest longest lasting rod...

Racing Sway Bar Part Number Identification

Mar 01, 2018

Use this to help identify our Smart Part number system that helps quickly identify and showcase the product features for your application.

Suspension Spring Dual Rate Spring Stacker Chart

Mar 01, 2018

Take the complications out of stacking springs with this handy chart, use this as tool to help determine the combined rate of two springs stacked on top of each other.

Torsion Bar Part Number Identification

Mar 01, 2018

Use this to help identify our Smart Part number system that helps quickly identify and showcase the product features for your application.

Pro Series Sway Bar Arms

Apr 26, 2012

This is an overview of how to fabricate and setup PAC Racing Spring Sway Bar Builder arms and components.

Retainer Strength Testing

Mar 21, 2012

This is a simple graph to show how PAC Racing Spring Retainers are evaluated and designed and tested for strength. This shows the pull test strength of several different configurations.

2011 AETC Conference

Dec 01, 2011

We were honored to present at the 2011 AETC technical symposium. Mr. Jason Youd prepared and presented an example of what factors go into valve spring life and performance.

Valve Spring Frequency Testing

Mar 15, 2007

This is an example of how frequency of a spring is verified to the design.