when hitting the bird... I notice that Iso heads make a louder noise than the oval ones.

Err.... the ISO head rackets make a pretty impressive "BOOM" while the oval ones make a much duller sound. Is it cuz of the archetecture of the racket?? or wut??

Anyone know anything about this??

It also depends on the tension. My Cab20 at 26lbs makes a nice metallic punch sound. As opposed to the bang created my MP77 at the same tension

Hi,

Mainly because the iso has a large head, and therefore the sweetspot on it is bigger. If you have a bigger sweetspot on the racket, compared to the original shapes, it's bound to make a louder sound.

Matt

Not true, I find Iso gives a more "clunk" sound... while cab heads make a sharp crack.

Could it be a string type and tension? Perhaps the speed of the racquet when hitting the bird? Also, are we referrering to plastic or feathers? Even with plastic birds, Calton sounds different from the Yonex ones.

With feather birds, I found when I hit the sweet spot of my racquet (iso or not) and with good reasonable speed, I get a very good pop sound.

My AB2000 sounds odd, giving a metallic "tong" sound when hit in the right place, maybe it's because of the strings:confused:

I think Xuser is right. High tension along with high impact speed will create louder cracking sound.

I don't think it would be erronous the assume that the lound cracking sound you hear is due to the fact that the shuttle is actually going supersonic for a split second.

It is like cracking a whip.

Ben

Supersonic, I like, I like... :)

Originally posted by benfok
I don't think it would be erronous the assume that the lound cracking sound you hear is due to the fact that the shuttle is actually going supersonic for a split second.


If it is going supersonic, doesn't that mean he's beating the current speed record of a shuttlcock by 300%?

Originally posted by bigredlemon
If it is going supersonic, doesn't that mean he's beating the current speed record of a shuttlcock by 300%?
No not really because it's at that instant where it's going supersonic, as soon as it leaves contact with the racket face, air resistance slows it down quite a bit

So how fast is the racquet head going to be able to propel a shuttle to over 700 mph?

excuse my scepticism, but I reckon a reeeeally good smash gets the racquet head going at about 150 mph

G'day,

In my experience, Cab/oval rackets makes louder crack sound than Iso shaped rackets, with same string at same tension.

However, I am inclined to believe that the string type and tension is the main contributor here, as I have strung identical rackets with same tension but different string type, and they sound totally different.

My best sounding racket so far is Cab20 / MP90 and worst is MP77 - which makes a loud "clunk" when smashed...

on the subject of sonic boom;

It is well know that the crack of a whip is a sonic boom and is actually caused by the tip of the whip being flicked back. Imagine how flexible a racquet is when the head speed it over 150 km/h the flex forward and back during a shot is quite likely to be supersonic for a very brief period of time. usually tho contact with the shuttle just after this - otherwise it would correct to assume that the shuttle should travel a lot faster than current records

hehe

gives new meaning to me calling Nathan Robertson and Anthony Clark "Thunder and Lightning"

See ya

Neil

A whip and a racket are considerably different.

The supersonic speeds of the whip tip are related to how the thickness of the whip tapers towards the end. When you crack a whip you form a wave that travels along the length of the whip. You put energy into the system. As the wave move towards the end of the whip, the same amount of energy is acting upon a lighter and lighter piece of the whip (because it is thinner). This causes the acceleration of the end of the whip to great speed.

Try getting a crack out of a piece of rope that is the same thickness all the way along.

A similar effect is seen with tidal waves at sea. A wave may only be a few feet high out at sea where the sea is very deep, but when the wave gets close to shore, and the water becomes more shallow, all the energy is compressed into a small space and you get a very tall wave.


compare badminton to golf
golf pros get a club head speed of about 100-110 mph and ball speed of 160-170 mph