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  • Natural Frequency
  • Air Shocks
  • Torsion Bar
  • Leaf Springs
Dave's Spring Calculator
  • Coil Springs
© Dave Clark 2013
  • Links
  • About
  • Springs Needed
  • Spring Combinations
  • Top Spring
  • Bottom Spring
  • Rate After Cutting Spring
  • Find Rate of Spring
  • Rate of Leaning Spring
  • Wheel Rates
Coil Springs
  • Estimating Springs
© Dave Clark 2013
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Leaf Springs
Spring Length ?
Number Of leaves ?
Full Length Leaves ?
Leaf Width ?
Leaf Thickness ?
Spring Rate is
calculate
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Torsion Bar
Bar Diameter ?
Bar Length ?
Arm Length ?
Motion Ratio ?
Calculate
Bar Rate Is
With Ratio of
Bar Wheel Rate Is
© Dave Clark 2013
  • Natural Frequency by Static
  • Natural Frequency by Sprung
  • Springs Needed for Frequency
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Natural Frequency
  • Natural Frequency of Springs
© Dave Clark 2013
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Wheel Rates
Top Spring ?
Bottom Spring ?
Motion Ratio ?
Calculate
Bump Rate Is
Combined Rate Is
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Springs Needed
Bump Rate ?
Combined Rate ?
Motion Ratio ?
Calculate
Top Needs To Be
Bottom Needs To Be
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Spring Combinations
Top Spring ?
Bottom Spring ?
Calculate
Both Springs Together Are
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Top Spring
Combined Rate ?
Motion Ratio ?
Bottom Spring ?
Calculate
Top Needs To Be
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Bottom Spring
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Bump Rate ?
Motion Ratio ?
Calculate
Bottom Needs To Be
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Rate After Cutting
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Spring Rate ?
Original Length ?
Calculate
New Rate Is
Length After Cut ?
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Find Coil Rate
Spring O.D. ?
Diameter Of Wire ?
How Many Coils ?
calculate
Spring Rate is
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Rate of Leaning Spring
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Angle Of Lean ?
Spring Rate ?
Actual Rate Is
Calculate
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Natural Frequency of Springs
Top Spring ?
Bottom Spring ?
Sprung Weight ?
Motion Ratio ?
Bump Frequency Is ?
Combined Frequency Is ?
Calculate
© Dave Clark 2013
Springs Needed For Frequency
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Bump Frequency ?
Combined Frequency ?
Sprung Weight ?
Motion Ratio ?
Top Needs To Be
Botton Needs To Be
Calculate
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Natural Frequency by Sprung
Wheel Rate ?
Sprung Weight ?
Frequency Is
Calculate
© Dave Clark 2013
Natural Frequency by Static
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Static Deflection ?
Frequency Is
Calculate
© Dave Clark 2013
Estimating Springs
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Bump Wheel Rate ?
Sprung Weight ?
Motion Ratio ?
Wheel Travel ?
Distance To Bump ?
Calculate
Top Needs To Be
Bottom Needs To Be
© Dave Clark 2013
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Eibach Performance Suspension
Eibach is the world’s leading manufacturer of aftermarket and performance springs for all kinds of uses, ranging from stock applications, road, and drag racing and off-road racing. With full engineering and design faculties and state of the art manufacturing facilities. Check out the link leading to the Eibach website.
Kartek
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Kartek is the one place to shop. Kartek prides itself on having all the parts on the shelf. Kartek also has a full line up of personal with the knowledge you need for your project. Check out the link leading to the Kartek website.
Help
All Dimensions are in inches
Spring rates are in pounds per inch
Frequencys are in cycles per second or hz
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Motion ratios are how much the spring moves compared to how much the wheel moves. This is normally a number less than one. For example enter .5 instead of 2 to 1.
If you get wierd stuff back, it is because the conditions are not right. For example, too high spring rate for the amount of travel to bump, or the situation is impossible.
Decimial points are dots... not commas,,,
© Dave Clark 2013
The formula calculation pages all have typical values entered as an example, change any or all values to your needs and hit Calculate to see the results
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About
Dave Clark is a car builder, designer, fabricator, machinist and mechanic. He has worked on various teams, ranging from SCCA road racing to racing trucks and buggies in the Mickey Thompson Stadium series, SCORE and HDRA long course desert races and the SODA and CORR series. In his spare time he likes to write programs and work with computers. He also is interested in Sumerian and Babylonian literature and the Gilgamesh epic. He can be reached at daveclarkracing@gmail.com
© Dave Clark 2013
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King Shocks
King Shocks is a family owned business developing and manufacturing the finest shocks in the industry. For all your needs; from stock vehicles, off road buggies, King of the Hammers and the ultra fast Trophy Trucks. Top shelf design facilities and the best shock dyno in the business. Check out the link leading to the King Shocks website.
Air Springs
Shock Stroke ?
Shaft Diameter ?
Reservoir Volume ?
Oil behind Reservoir
Pressure ?
Motion Ratio ?
Negative Spring
Shaft showing on Negative Spring
Engagement ?
Calculate
Shock Shaft
Wheel Rate
Wheel Rate
Showing
Change
Piston ?
Rate ?
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