A lot of players hear one thing about thin repulsion strings and immediately assume:

“If it’s a 0.65 mm string, you have to string it at 27–30 lbs or it won’t feel good.”

That idea gets repeated so often that many players never question it.

But from a stringer’s perspective, that’s exactly why some people end up feeling uncomfortable with the Gosen RYZONIC 65 — not because the string is bad, but because the tension setup is working against what the string was designed to do.

What kind of string is RYZONIC 65?

RYZONIC 65 is a classic high-repulsion performance string.

Its characteristics are very clear:

• 0.65 mm thin gauge
• fast shuttle release
• sharp, crisp hitting sound
• lively rebound response
• firmer and cleaner feedback compared to softer repulsion strings

One thing many players also like is that tension retention is relatively solid for a 0.65 mm string.

It doesn’t completely collapse after a few sessions the way some ultra-thin strings do.

The real issue: people string it too high

This is where things start going wrong.

Many players pair:

• thin gauge
• hard feel
• loud sound

…with the assumption that higher tension automatically means better performance.

So they jump straight into:

• 28 lbs
• 29 lbs
• sometimes even 30 lbs

At first, it may feel exciting:

• sharp sound
• very direct response
• strong feedback

But after a few sessions, the problems usually begin.

What happens when RYZONIC 65 is over-tensioned?

With excessive tension, the string gradually loses the balance that makes it enjoyable.

Typical progression looks like this:

First session

• feels extremely crisp
• very responsive
• exciting sound

Third or fourth session

• shuttle hold decreases
• power becomes harder to access
• timing window shrinks
• players start forcing swings more

Later sessions

• only hardness remains
• impact feels tiring
• comfort disappears
• sound stays loud, but the shuttle stops feeling “connected”

At that point, many players blame the string itself.

But in reality, the setup simply moved too far away from the string’s natural sweet zone.

The setup most players actually play better with

Instead of treating RYZONIC 65 like a “must-use high tension string,” it works much better when viewed as:

High repulsion + moderate tension

For most players, the ideal range is usually:

• 23–26 lbs

This allows the string to:

• keep its rebound speed
• maintain its crisp sound
• still provide enough shuttle hold and comfort

Good starting points

Want a lively sound but still easy to use?

• Try 24–25 lbs

This is often the sweet spot where:

• the sound stays sharp
• drives feel fast
• power remains accessible
• the string still feels comfortable over longer sessions

Newer players or inconsistent timing?

• Drop another 1–2 lbs

A slightly lower tension helps:

• expand the usable sweet spot
• reduce arm fatigue
• improve timing consistency
• let the body adapt naturally

Trying to “force” advanced tension before building stable mechanics usually slows improvement instead of helping it.

One important thing many players misunderstand

A string sounding louder does not automatically mean it is performing better.

Sometimes:

• the sound improves
• but shuttle speed drops
• timing worsens
• energy transfer becomes inefficient

That’s why some high-tension setups feel impressive for five minutes — but exhausting after two games.

Final thought

RYZONIC 65 is popular for a reason.

It’s fast, crisp, lively, and responsive.

But its strength comes from controlled repulsion — not from extreme tension.

The best setup is not:

“How high can I pull it?”

The better question is:

“At what tension does this string still feel alive in my hands?”

That’s where the real performance starts.