Steeda S550 Ultralite Springs - Linear (2015 GT/V6/EcoBoost) - Now Available

That cutaway pic is awesome David, I wish all springs were marketed that way.

OzS550 said:

Does the lighter weight come from a stronger, thinner material? Does this also allow for a greater travel as a result?

Are they cold coiled?

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The manufacturing process also helps in contributing to their lighter weight.

Nick said:

That cutaway pic is awesome David, I wish all springs were marketed that way.

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Glad you liked it! :cheers:

OzS550 said:

Does the lighter weight come from a stronger, thinner material? Does this also allow for a greater travel as a result?

Are they cold coiled?

Click to expand...

David@Steeda said:

The manufacturing process also helps in contributing to their lighter weight.

Click to expand...

Thanks for the reply David, but could you be more specific regarding cold coil vs. hot winding manufacture?

Also regarding the lighter weight; is this considered to contribute to lowering unsprung weight? We always hear about lighter wheels for example lowering unsprung weight and the resultant benefits, but what about the springs themselves? Are they considered 'unsprung weight'?

The other potential benefit I see with your springs, - if there is more physical space between the coils, would this improve travel and eliminate binding?

Many thanks,

Michael.

OzS550 said:

Thanks for the reply David, but could you be more specific regarding cold coil vs. hot winding manufacture?

Also regarding the lighter weight; is this considered to contribute to lowering unsprung weight? We always hear about lighter wheels for example lowering unsprung weight and the resultant benefits, but what about the springs themselves? Are they considered 'unsprung weight'?

The other potential benefit I see with your springs, - if there is more physical space between the coils, would this improve travel and eliminate binding?

Many thanks,

Michael.

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Hi Michael,

Apologies for the delayed response, I must have missed this one.

Cold coil winding is a process which shapes the coil around a mandrel or arbor at room temperature. The material used is already pre-tempered before the process begins. This means it's already been heat-treated and strength-hardened. Cold coil windings can also be stress relieved after this process by heating them to a specific temperature and then controlling the rate at which they cool.

Cold wound springs will typically run lighter than hot wound springs and will have a smaller wire diameter. With a smaller wire diameter and larger static displacements between each individual coil you will indeed have a larger range of travel for that particular spring before coil bind occurs. Typically cold winding is for smaller applications as you could imagine the job gets tougher the thicker the material is.

Hot wire springs are heated to 1700 degrees Fahrenheit and are wound around a mandrel. Since they are softer at this temperature, larger diameters can be utilized. To maintain specific rate and stress relieve these parts they are oil quenched and then tempered.

Cold winding generally runs materials from 0.375”-0.625” in diameter where hot winding can run up to 1.75” material diameters, however cold winding is more efficient and allows you to use stronger material alloys which ultimately results in lighter springs.

Springs are in fact unsprung weight! Well, partially. There is actually a formula for your springs and dampers and the items that are in the “grey area” of your suspension. Typically 2/3 of the weight of your suspension is unsprung weight and 1/3 is sprung weight - but this is an over simplification. In actuality it depends on your suspension geometry and motion ratios as to how you split up the masses of the control arms' springs and dampers.

Thanks David for your detailed reply.

And so your Ultralite springs are cold coiled?

...and therefore less prone to sag?

The less mass in the spring must allow it to react (compress) more quickly when it encounters bumps?

OzS550 said:

Thanks David for your detailed reply.

And so your Ultralite springs are cold coiled?

...and therefore less prone to sag?

The less mass in the spring must allow it to react (compress) more quickly when it encounters bumps?

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They are cold coiled, and there is zero sag over the life of these springs.

The lowered inertia of the spring due to a lower mass is completely negligible when we talk about how quickly a spring will compress. The rate at which a spring compresses is purely a function of force. F=KX is the equation for spring force.

The rate at which a spring compresses during cornering of a vehicle is much more a function of many other things. How quickly a spring compresses in cornering is better thought of as how quickly weight transfers in the car. This depends on items such as the following: tire cornering stiffness, overall compliance in the system, roll center height, center of gravity height, damper force, spring rate.

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16GT/CS said:

https://www.facebook.com/photo.php?...0204890619100.331766.549269099&type=3&theater

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Looking good

http://www.mustang6g.com/forums/member.php?u=10893

David, are the 2015 V6 oem shocks to "soft" for the ultralite linear's, should we go with progressive's if keeping stock shocks?

Mike

Couldn't wait, just ordered Ultralite linears...

So impatient to see them on with new wheels and drive it

Northern Stallion said:

Couldn't wait, just ordered Ultralite linears...

So impatient to see them on with new wheels and drive it

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Congrats!

Northern Stallion said:

Couldn't wait, just ordered Ultralite linears...

So impatient to see them on with new wheels and drive it

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Be sure to post up some pics once installed!

David@Steeda said:

Be sure to post up some pics once installed!

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Will do! Got them wednesday, they'll be on in a week.

Can you give me the best specs for handling and ride quality alignment: for my Ultralite linears, tires are 275´s on all corners, i have a V6 and roads are pretty rough here.

Springs being installed now