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Power Versus Repulsion In Racket And String
February 7, 2014
4:17 pm
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Luke85
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I frequently read comments (in various forums and reviews) saying stuff like: This racket is powerful; that string’s power is great; this racket has more power than that racket; what string is the most repulsive; and so on.

But lately it dawn on me that when people use the term “power” some might actually refer to repulsion.

What do you guys think?
I surmise power is about momentum while repulsion is about speed, CMIIW.
If so, please enlighten me more.

This, I think, applies to both racket and string, racket’s head balance and string’s diameter.

Thank you.

February 9, 2014
12:50 pm
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Roger
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Hi Luke and welcome to the forum.

As has been said on this site many times a new racket or new strings or tension aren't going to make up for a shortfall in technique. Personally I think that players would reap far better returns from coaching and practice sessions than new equipment.

That said and, given that you may have very good technique, the right racket and string / tension can give you an edge all be it as much psychological as physically. We all need to be comfortable and confident with the tools we are using.

As for your main question regarding power, repulsion etc I think that Paul, given his extensive knowledge of rackets and strings, will be well qualified answer this topic.

 

Roger     

February 9, 2014
9:50 pm
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Paul Stewart
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Hi Luke

 

You raised an excellent point – thank you.

 

There are different aspects about power.

 

1) genetically what a player is capable of taking into consideration skill/technique

 

2) what a racket is capable of

 

3) type of string and tension.

 

A player can train, to a point to increase power, strength and technique.

 

Depending on flex, head weight, materials there are varying degress of power available. Also, the specifications have to suit the player.

 

String is an interesting aspect of power. There are different strings that are deemed powerful. However, as personal taste plays such a major part in string selection this is where the grey areas kick in. Players choose string for many reasons and not always for power. Some prefer control, some consider they get more power from a thin gauge rather than thick gauge. And the variables go on and on.

 

There are strings with greater repulsion characteristics. However, these can dimish with increased tension and this is why the combination of string choice and tension must be taken into consideration. What I consider a good string with high repulsion may actually work best strung under 25lbs tension. This provides a slightly bigger sweetspot and allows the string to do it's job well. The lower the tension (to a point) may allow this string to really show what it's got.

 

By all means listen to what other players say about a string. But, the most important part is to test. If a string feels livelier and the shuttle appears to fly faster, then maybe this string suits you best.

 

I hope this helps.

 

Paul

February 10, 2014
11:21 am
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Luke85
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Hi Roger, thank you and I agree about the technique. Well my technique is still mediocre but I try to make sure I use the correct strokes. Previously worked on shifting from wrist snap to pronation technique for example. Currently working on backhand (footwork, grip, supination, hitting clean etc) and getting smoother footwork movement.

Paul, thank you very much for the explanation, very informative.
I realize my question is more technical than practical, touching the mechanics here. On the other hand testing gives me hands-on experience, yes. But then I wonder about the difference of the two characteristics above. Adding to reading from the internet, I found from personal experience that different setups requires different approach (unsure of better terms). Case in point, enjoyed using Nanospeed 300 with NBG98, then tested Voltric 5 with NBG95 for an hour. I felt it very heavy that it slowed down my swing. My clears was slower but the bird reached the backcourt nonetheless.
Was I imagining it, the bird seemed to be flying longer distance, or did the power compensate for the reduced initial speed?

Sorry if this is kinda longwinded

February 12, 2014
12:27 am
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Paul Stewart
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Luke

 

If you use a light headed racket and then immediately change to a head heavy racket, your muscles are not accustomed to working hard to generate more swing speed. Hence, the feeling of a slow swing, and yet the heavier head produced the desired effect.

 

Consequently, when you use a head heavy racket and chance to a head light racket, you can immediately swing the racket much quicker and gain more power. This eventually wears off unless you constantly top up the use of a head heavy racket. The effect is similar to completing my armchair exercises, however you will gain more benefit through the exercises than this change of racket.

 

If you complete these exercises using a head heavy racket, then this is turn will feel considerably lighter.

 

Paul

February 13, 2014
9:05 am
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Luke85
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Thank you again for clearing things up.
I have two good old Carbonex 8SP rackets which may be out of date but great for training my muscles. I do the pronate-supinate excersize sometimes and it tires my forearm in no time. =>

You said: “yet the heavier head produced the desired effect.”
So is it true that the head heaviness produces more power that enables the shuttle to “penetrate the air” stronger, despite other things being equal including initial speed?

If yes, I might be able to make a case that using a head light racket we can hit more dangerous attacking clears. With a faster swing speed required, consequently the shuttle would travel faster initially but the less power would cause it to slow down quicker, preventing it to go out at the back. The opponent would have shorter time to react.

Is this hypothesis of mine sound?

February 13, 2014
10:50 pm
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Paul Stewart
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Luke

 

Power is generally referred to as a meaure of racket head speed and force squarely applied. A player who is genetically built for power will hit incredibly hard with any racket, as they have the ability to generate terrific speed of the racket head over short distance.

 

The extra weight in a racket head provides additional force.

 

If we take another example of hitting a nail into a piece of wood that is resting on the floor. You pick up a heavy hammer and you can hit the nail into the wood through the combination of slower swing but greater force. By switching to a much lighter hammer, you can easily generate more speed but it may take more attempts before the nail is driven into the wood to the same depth because the overall force is less.

 

Therefore, for some players, to find their most consistent power shot, they may need a combination of correct weight to go with their natural swing speed. By using a heavy racket prior to changing to a light racket, your muscles remember the work required previously, hence for a short period provide an improvement prior to returning to their natural swing speed.

 

I hope this metaphor helps you to understand better.  

 

Paul

February 15, 2014
8:09 am
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Luke85
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Thank you Paul for all the help.

I consider myself not naturally strong. I hit harder than beginner friends thanks to technique, however as I want them to improve their game (not to lose easy points so often) I share with them the overhead technique and some who embrace it and strive to do proper strokes start to hit harder than me ALMOST IMMEDIATELY.

Their development is good for me as well though, even when they play just for fun.

Currently I use the two Carbonexes, one being slightly lighter than the other but both are heavier than modern full-carbon 3U rackets. I wish to get myself one but kinda torn between going head light or head heavy.
I really like the NS300 having played with it for 2-3 months but it was not mine. Then I tested the VT5 and was impressed with the extra power although less easy to swing around. The other option is MusclePower 29 Light, but never use it before.

People please keep the feedbacks coming. Any further thought on the topic of repulsion versus power and whatever suggestion on selecting a suitable racket will be much appreciated.

🙂

February 17, 2014
11:58 pm
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Paul Stewart
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Luke

 

It's so easy to improve your play with a head heavy racket. Just follow my armchair exercises.

 

Paul

February 21, 2014
5:15 am
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Luke85
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Yes, sir. Slowly but surely I improve my forearm with the exercise.

I re-read this thread and there is the definition of power above. But then what is repulsion?

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