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Voted Best Traction Innovation by Review Board Magizine



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The Tire Depicted in the Video Below
Did at one time Have Sufficient Air Pressure,
until Exposed to Cold Temperatures!

See-Consequences of Air Pressure Changes


Study of Tire Dynamics

and the Use of Chains

D. Anthony Bright / Mechanical Engineer


Metal Tire Chains and Cables appear to be Tight when they are first mounted to my tire, so why must I re-tension after a short distance of travel?

Answer: Most People Don't Bother pulling off the road to check their tire chains and re-tension as required,

even though the instructions state the importance, and that this procedure is essential to safe operation.


Why Do Steel Chains & Cables Detach From My Tires?

They're a lot going on with your tires that make it difficult to have them remain attached, even if you do stop and re-tension occasionally as directed.

Study the Following to Learn Everything that You Need To Know about Tire Chains (And Then Some.)


Trouble-Shooting the Root Cause

of Premature Failure

As it is clearly demonstrated (in the video above), not only should we think about ambient temperatures / Air Pressure of your tires, as well as radial momentum, Centrifugal and Inertia Loads imposed onto the chain, but one must

First Consider the overall Dynamics of the Tire, being constantly in lateral motion with

*sidewall expansion and contraction.


A rigidly affixed metal chain to a resilient tire must react in one of following three ways once exposed to this demanding application,

                   (1.) must either break (if chain materials are weaker than the tire and forces applied), or 

                                    (2.) the chain becomes loose as the bulge pushes outwardly away from the centerline of the tire, or 

(3.) *Extreme damage is caused to the supporting tensile members of the tire.

(Should the tire chain have sufficiently enough mass and strength.)


 More often than not, do the chains and cables break due to abrasive wear, and not from sidewall expansion.

However; Number two is a primary factor of premature failure of chains and cables.


*Although commercially available chains and cables typically do not have the tensile strength to cause major damage to the tires, it does occur in some cases.



Important Consideration

In addition to this typical lateral side thrust, the Circular Pitch of the tire also Changes,

as the Overall Diameter of the tire is in CONSTANT FLUX.



What Causes the Detachment of Chains and Cables?


Tire Chains are Affixed to
a tire with Irregular, Constantly Changing, Circular Pitch Dimensions

Consequences of Air Pressure Changes

Even cold and hot temperature variations will affect the dimensional stability of your tires,

and once exposed to cold conditions, your tires lose significant pressure.

You may install your steel chains or cables while in your heated garage, and they initially seem tight against your tires,

but the moment you pull out onto the snow and Ice they will become loose.




What Typically Happens?

You drive a short distance and go around a curve and perhaps hit a bump, or major pothole in the road, and much to your dismay, your metal chains become loose and fly off your tire! You then consider yourself lucky if they didn't get tangled in your brake lines, or damage your wheels and body panels.




The Air Pressure in your tires is very unstable, and matter of fact- it's not just air!

Air is a gas (more specifically a mixture of gasses: approx. 78% Nitrogen, 21% Oxygen,

and the rest Carbon Dioxide, water vapor, and trace amounts of mainly noble gasses).

NOTE* Variable Temperatures & Pressures can actually change these gases to a solid or liquid.


(You Really Don't Need to Know all this, unless you're going to Major in Chemistry)


Crude Experiment

Tie a strong string tightly around the circumference of a soft rubber air-filled ball, then try to remove it by hand. (You can't easily remove!)

Now; Compress the ball by hand and remove the string. (Not a Problem!)

Place that same (string-tied) rubber ball into the freezer for a few minutes, and it will practically fall off without much effort!

Metal Tire Chains / Cables React to Tire Pressure Loss, Compression and Loads the Very Same Way!


How do I properly size my steel tire chain to fit the (air-filled) rubber tire,

if the dimensional specifications are constantly changing?

This is the problem, You can't!


~Technically~

This is What Occurs:

With each rotation, the base of the tire in the proximity of contact surface, continually dances around inward and outwardly (as well as up and down)

due to the resiliency of the tire materials under load. (See Video Above)

Angular Deflection will Skew the metal traction device Elliptically (side-to-side), as the tire rotates horizontally

with the load once exposed to slight turns, and / or sharp curves in the road. (Offset Angularity)

Said movement / deflection coupled with Centrifugal force is the leading cause of detachment and premature failure

of the mounted metal tire chains and cables.

Picture This: Have you ever seen a tire being removed from a wheel? The mechanic uses side force of a lever tool to skew the bead of the tire off and separate from the rim.

By the same principle; Tire chains at the point of contact and once exposed to radial load of a vehicle, deflect 0pposite the angularity, and consequently skew off the periphery of the tire.


Intentional Reduction of Air Pressure In Tires

To compound all of these inherent problems, many folks will intentionally reduce the air pressure in their tires

in effort to increase their tire traction, by way of the additional square inch contact to the surface.

Important Tip: {DO NOT REDUCE AIR PRESSURE WITH THE USE OF STEEL CHAINS OR CABLES!}



The application / use of Tires (as they Dance) with Steel Chains and Cables affixed result in the following:



They simply become loose, and Centrifugal Forces & Skewing sling them off the tire!


Snow Chains have Remained virtually the same Design for over 100 Years!

Chains and cables are not resilient, will not flex with the applied loads, and cannot rebound to their original shape or mounting configuration once they are exposed to the inherent characteristics and dynamic loads of a tire. Considering all the Above Facts, One could not expect rigidly affixed Steel Tire Chains / Cables to remain mounted to very resilient and dynamic tires while in motion.



Why Don't Tire Chain Manufacturers Improve on their Design?


This we know-The conventional (air-filled) rubber tire "Bulges" and expands outwardly with various loads.

Realizing this Inherent Characteristic has been identified

ever since the development of the pneumatic tire (1887),

One might think, solving for any / all associated problems

would initially be the very first major design consideration

of any Competent Tire Traction Engineer.

This is true but,


Tire chain manufacturers simply choose to neglect this important detail,

Because:

1. *They're solely in the business of producing Metal Chain & Cables,                                                                          

2. They are fully aware that their manufactured materials cannot solve for these many problems.                            

3. Tire Chains represent only a very small fragment of their overall steel chain and cable business.                         

4. They are Complacent with the Fact, They will still make $Billions in Profits if they never sell another Tire Chain.

Conclusion: The Metal Chain and Cable Companies Simply Cannot, and/or Never Even Want to,

Produce Anything other than Steel Chains and Cables. *See # 1


Opportunity!

Armed with all this Information, Tony Bright the Mechanical Engineer / Inventor

developed this Unique, Functional yet

"Simple Solution!"


Flex Trax solves all the problems associated with Tire Chains and Cables

Not just Another Alternative Traction Device!

Increased Tire Traction, by way of the Additional Square Inch Contact to the Surface.

Unique Flex Trax Technology “Flex” and do Quickly Rebound with the loads imposed

and do Actually Become Tighter as they Resist Centrifugal, and other Dynamic Forces of the Tire!

The "Flex" of the Resilient Materials Compensate for bulging and Tire Dimensional Instability.

The Engineered Mechanics of our Advanced Traction Systems Coincides with the Dynamics of the Tire,

Taking full Advantage of the Inherent Forces During Operation.



You will experience variable conditions in travel to your destination. With our product you may continue on even if you hit bare pavement as opposed to tirechains and Auto Sox that must be removed immediately or else suffer extreme damage to the traction materials.


How does it Work?

It's Simple!

Flex Trax Coincides with the Motion of the Tire!


Basically; Flex Trax have arms and legs that Grip the Tire like a Big Ole Black Bear Climbing a Tree! (The HILLBILLY Bear Hug:-)

One opposing Trax under (Centrifugal & Angular) Loads has a tendency to move with rotation, but the other Trax says- NO, you can't go there,

and the arms and legs actually get tighter around the tire as the loads try to shift.

This Unique Self-Tensioning * Positive-Locking * Feature also keeps the assembly centered on the tire *Self-Tracking * ,

with equally balanced forces distributed on both sides of the tire under load.

While in the radial load zone and as the tire "bulges",

the resilient arms and legs bend (FLEX) outwardly and quickly rebound to the original configuration,

as they repeatedly & continually move along their circular path away from the load zone of the tire.

The * Self-Cleaning * Feature prevents build-up of materials onto the Trax,

as the Patented Chambers throw out the mud and snow

like a bucket conveyor!


Pascal-Tech

Patented Technology

 

Unlike Metal Tire Chains & Cables,

FLEX-TRAX CAN DANCE WITH THE TIRE!

Watch the

*Performance Video!

Truly Unique !
Omni-Directional Chambers © Supports the load in all Directions!

* Self-Tracking * Self-Cleaning * Self-Tensioning * Positive-Locking * ©


Works well in slippery grass, mud, sand, snow and snow packed ice.


    Flex Trax solves all the problems associated with Tire Chains and Cables

Solves all the Problems Associated with Tire Chains!

Technical sheet

Award Winner

This engineering study was first conducted for the purpose of Flex Trax Feasibility early 1994.

© Copyright 2016 Patent Development Company, LLC. All rights reserved.

This material may not be published, broadcast, rewritten or redistributed WITHOUT WRITTEN AUTHORIZATION.

COPYRIGHT AND TRADEMARKS




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