Why Trampoline Springs Determine Your Bounce Experience – Read On

Trampoline springs largely determine how smooth and safe your trampoline feels. In this blog, we explain when springs need replacing, how to quickly check them yourself, and which size and quality best fit your trampoline. You’ll find simple tests such as holding a spring upright and shaking it, and we explain why rust, stretching or a broken hook means you should replace them immediately. We also discuss the difference between conical and double-conical springs, why galvanisation prevents rust, and how to safely install springs using a spring puller. Finally, we give maintenance tips and explain when it’s better to replace the jumping mat along with the springs. Read on for step-by-step advice to make your trampoline bounce smoothly and safely again.

What are trampoline springs and why do they determine the jumping experience?

Trampoline springs largely determine how a trampoline bounces and how safe it is. In practice, the difference is immediate: fresh springs give a deeper, smoother bounce; worn or rusty springs make jumps stiff and unsafe. At Etan, we notice many advisers and users think of the jumping mat first, while the springs are often the real cause of a diminished bounce.

Note: in this article you’ll find practical checks and steps to measure, replace and maintain springs yourself. Also check our range of trampoline springs for quick replacement, compare Etan trampolines or read maintenance tips in "Trampoline maintenance: discover the best winter tips".

When should you replace trampoline springs?

You should replace trampoline springs as soon as they are visibly worn, stretched or rusted — this immediately reduces the risk of breakage and accidents. Usually, you’ll first notice that the trampoline bounces less well or that sounds change during jumping.

Signs of wear

• The trampoline feels stiffer or doesn’t bounce as high.
• Springs are stretched: coils no longer sit tightly together.
• There are rust spots or the metal structure looks damaged.
• A hook has broken off or a spring is missing.

Why rust requires immediate replacement

Rust weakens the steel and can cause sudden breakage. Breaking springs can shoot away and injure people. Therefore: replace immediately when severe rust or cracks are present — do not keep using them.

How do you test and check if trampoline springs are still good?

You can easily check springs yourself: hold the spring upright and shake it — if it wobbles, it’s stretched and worn. This is a quick and reliable test that many people perform themselves.

Step-by-step test

1. Remove one edge pad so you can access the spring.
2. Detach a spring (or take one that isn’t under tension).
3. Hold the spring upright and shake it firmly.
4. If it stays upright, it’s still fine. If it wobbles, it needs replacing.
5. Also check that coils sit tightly together and look for rust and hook breakage.

Practical inspection tips

• Always check multiple springs: one bad spring can strain the others.
• Listen for sounds while jumping; squeaking can indicate wear.
• Take photos of severe rust or breaks as a reference when buying replacement springs.

How do you choose the right size and quality of trampoline springs?

Choose the right size by measuring an old, non-stretched spring from hook to hook; this tells you exactly which length you need. Choose quality based on coating, spring shape and warranties.

Measuring instructions: how to do it correctly

Measure a spring in relaxed condition from the outside of one hook to the outside of the other. Use a non-stretched spring as reference. Note the length and order that exact size. Quick example: many round trampolines use 21.5 cm for Ø365–Ø430 and 17.8 cm for Ø245–Ø305.

Conical vs double-conical springs

Double-conical springs stretch less quickly because the force is distributed evenly across the spring; this keeps them smoother for longer. Conical springs are cheaper but often have a stiffer bounce and more risk of stretching at the ends.

Coating and lifespan

• Hot-dip galvanisation and double galvanisation prevent rust best.
• Higher-end springs often give a smoother bounce and longer warranty periods.
• Choose double hot-dip galvanised springs if you live in a humid climate.

How do you replace trampoline springs safely and efficiently?

The safest way to replace springs is with a spring puller; it prevents injuries and makes the job much easier. Follow a consistent order and check each spring while installing.

Required tools

• Spring puller (recommended)
• Gloves and safety glasses
• New springs in the correct size
• Optional pliers for stuck hooks

Step-by-step replacement with a spring puller

1. Make sure the trampoline is still and remove all jumpers from the mat.
2. Remove one spring at a time or replace in groups (for example, every second spring) to keep tension even.
3. Attach the spring to the frame first, then pull it toward the jumping mat with the spring puller.
4. Check each new spring for correct position and hook alignment.
5. Put the edge pad back and perform a final safety check.

Replacement sequence and safety

Never replace all springs at once without support from the mat; this can deform the frame. Use a cross or star pattern: replace springs evenly spread across the trampoline so the tension remains balanced. Watch out for sharp edges and wear gloves.

Maintenance and when to replace the jumping mat as well?

Good maintenance extends the lifespan of your springs and mat; clean, dry and protect them against rust to get more use out of each set. If the mat is older than 4–5 years or visibly worn, replace the jumping mat along with (some of) the springs.

Maintenance routine (monthly / per season)

• Check all springs for rust and stretching.
• Clean frame and springs with water and mild soap; dry thoroughly.
• Apply a rust inhibitor on small rust spots (not on new galvanisation).
• Check edge pad and safety net for damage.

When should you replace the jumping mat as well?

Replace the jumping mat along with the springs when:

• The mat is more than 4–5 years old.
• The mat shows fraying, tears or UV damage.
• You notice that replacement springs don’t give the desired effect — often the mat is also part of the problem.

Tip: replace the mat and springs together for a true “like new” experience and longer lifespan of the parts.

In short: check regularly, measure accurately and choose quality with good coating. At Etan we always recommend starting with a quick upright-test and then choosing double-conical, hot-dip galvanised springs when replacing. At Etan we specialise in trampoline parts and are happy to help you keep jumping safely and smoothly.

Trampoline springs largely determine how smooth and safe your trampoline bounces, so they deserve regular attention. Replace springs immediately when you see rust, stretching (loose coils), broken hooks or when the trampoline feels stiffer and bounces lower. The simple upright-and-shake test quickly shows whether a spring is worn, and measuring hook-to-hook will tell you the correct size. When replacing, choose good coating (hot-dip galvanised) and preferably double-conical designs, and install springs safely with a spring puller following a cross pattern. Don’t replace all springs at once without mat support and always check the mat; if the mat is old or damaged, replacing it together with the springs is recommended. Want to know exactly which size and quality suit your trampoline or directly browse parts? Check the referenced products/links for more information.