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View Full Version : What is cortex, really?


NoobWannabe
11-23-2012, 10:19 AM
Can someone explain to me about this technology? All this time i thought it was the design at the throat but i was told that it is not, it is built in the handle.

Andyroo10567
11-23-2012, 10:29 AM
A piece of plastic that is glued on the racquet. But of course im talking about the GT and older models. The newer Babolats, I.E 2013 APD and 2012 PD have a active cortex. It doesn't seem like it does much, but it clearly looks like a gimmick that should work very slightly.

Dragan
11-23-2012, 10:41 AM
My understanding (but I may be wrong) is that Cortex is in the throat, actually:

http://www.babolat.com/#/tennis/us/innovations/47/Cortex-Active-Technology

I believe that it's simply an inserted (plastic or silicone?) layer that separates throat and handle shaft, not allowing direct contact and transfer of vibrations between the two.

It is envisioned as a frequency filter, which supposedly attenuates low frequencies that cause harm to joints, and passes frequencies associated with the "feel" of the ball at impact.

Whether it works as intended or not, is a different question... :)

TroutSc
11-30-2012, 08:30 PM
I just hacksaw'd an apdgt, looking through it right now, hollow through the cortex piece. it looks like the cortex is a decorative external piece only. the inside looks just like a hollow one piece all the way down. the gt area as well, looks like a simple one piece, hollow throughout. hollow hoop, hollow throat, hollow handle.

db10s
11-30-2012, 08:32 PM
I just hacksaw'd an apdgt, looking through it right now, hollow through the cortex piece. it looks like the cortex is a decorative external piece only. the inside looks just like a hollow one piece all the way down. the gt area as well, looks like a simple one piece, hollow throughout. hollow hoop, hollow throat, hollow handle.
PLEASE POST PICS!!!!!!!!! I've always wondered what it looked like.

db10s
11-30-2012, 08:33 PM
And Cortex is a gimmick, nothing more.....

Say Chi Sin Lo
11-30-2012, 08:37 PM
Can someone explain to me about this technology? All this time i thought it was the design at the throat but i was told that it is not, it is built in the handle.

Technology? Please, then every one with a dampener is a pioneer.

It's nothing but a gimmick, just like every other "technology".

TroutSc
11-30-2012, 08:49 PM
PLEASE POST PICS!!!!!!!!! I've always wondered what it looked like.

shoot me a pm, i can email/txt them to you to post.

TroutSc
11-30-2012, 09:00 PM
sawed through the cortex, its like theres a slight groove on the external surface (minor indention) , the cortex is a piece of plastic that in-sets over that. just on the surface, cut in enough to be semi-flush to the exterior.

tennis_balla
12-02-2012, 09:17 AM
Just a gimmick really. Weight is a true vibration killer

Dragan
12-02-2012, 09:51 AM
Trout, great findings, can you please post some images?

Tennusdude
12-02-2012, 09:52 AM
now sure really

mad dog1
12-02-2012, 11:17 AM
Just a gimmick really. Weight is a true vibration killer

not necessarily. a clock tower bell weighs a ton, but it rings loud so weight doesn't kill vibration. something that is able to absorb energy like rubber and foam kill vibrations.

pvaudio
12-02-2012, 11:47 AM
not necessarily. a clock tower bell weighs a ton, but it rings loud so weight doesn't kill vibration. something that is able to absorb energy like rubber and foam kill vibrations.
That's not really the same thing. Mass really is the most straight forward way to reduce vibration transmission. In fact, in acoustics, there is the so-called mass law:

http://rwsc2.inforce.dk/sw98684.asp

Since sound is produced by vibrations, it's still analogous. A more massive racquet will transmit less vibration at the expense of feel. This is a problem though since weight always has a negative aspect.

MikeHitsHard93
12-02-2012, 11:48 AM
That's not really the same thing. Mass really is the most straight forward way to reduce vibration transmission. In fact, in acoustics, there is the so-called mass law:

http://rwsc2.inforce.dk/sw98684.asp

Since sound is produced by vibrations, it's still analogous. A more massive racquet will transmit less vibration at the expense of feel. This is a problem though since weight always has a negative aspect.

Helps explain why the pdr has little to no feel

Rozroz
12-02-2012, 12:46 PM
where are the sawed pictures?

Say Chi Sin Lo
12-02-2012, 01:06 PM
Helps explain why the pdr has little to no feel

Doesn't explain why the previous generations has little to no feel.

TroutSc
12-02-2012, 01:06 PM
where are the sawed pictures?

I sent a few to someone to post. If you shoot me a pm/email, I can email em.

Rozroz
12-02-2012, 01:11 PM
i cannot send you a PM. can you try sending me one?

luishcorreia
12-02-2012, 01:21 PM
its marketing to sell more racquets

TroutSc
12-02-2012, 01:40 PM
i cannot send you a PM. can you try sending me one?

Sent you the pics.

Rozroz
12-02-2012, 01:40 PM
Trout's pics uploaded (looks like he had some fun there)

http://imageshack.us/a/img812/7007/imagedgr.jpg
http://imageshack.us/a/img827/8007/image3oo.jpg
http://imageshack.us/a/img716/1622/image2uhj.jpg
http://imageshack.us/a/img94/8427/image4ct.jpg

Rozroz
12-02-2012, 01:41 PM
http://imageshack.us/a/img547/2044/image5q.jpg
http://imageshack.us/a/img607/7641/image6aic.jpg

Rozroz
12-02-2012, 01:43 PM
there was one more specific cortex pic but it was unfocused.

TroutSc
12-02-2012, 01:49 PM
there was one more specific cortex pic but it was unfocused.

which one? I can snap/send if anyone wants a specific piece

fundrazer
12-02-2012, 01:55 PM
A little bit of mumbo and a little bit of jumbo.

Dragan
12-02-2012, 03:01 PM
So that's famous "Cortex technology"... I'm impressed ;)

Say Chi Sin Lo
12-02-2012, 03:05 PM
So that's famous "Cortex technology"... I'm impressed ;)

Hey, a lot of money and craftsmanship when into that plastic V.

Rozroz
12-02-2012, 03:08 PM
maybe it feels hollow but basically it's sort of a nice idea to ease some vibrations IMO.
not sure if other brand's ideas looks much 'cooler' once you slice them.

Dragan
12-02-2012, 03:23 PM
maybe it feels hollow but basically it's sort of a nice idea to ease some vibrations IMO.
not sure if other brand's ideas looks much 'cooler' once you slice them.

Don't get me wrong, I'm a Babolat owner (Pure Drive GT 2012).

On my racquet, Babolat engineers made a huge improvement and even made this plastic-piece "active" by turning it upside-down (V shape -> A shape).

Since all playtests of Pure Drive 2012 confirmed that the new "active cortex" makes a noticable difference compared to "passive" cortex system, they implemented it in new and improved AeroPro Drive 2013, as well... ;)

Arsnlrob
12-02-2012, 04:41 PM
Makes you wonder why they even bother to pj it on Nadals racquet, since it's likley only cosmetic. Roddick just wrapped his overgrip high up the handle so you never saw the fake "cortex".

http://i813.photobucket.com/albums/zz58/Fabfed/P1030524.jpg

TroutSc
12-02-2012, 04:51 PM
im tempted to saw up my volkls and bb london. (or the demo donnay f100 i have sitting here)

jasonmiller
12-02-2012, 05:02 PM
As mentioned, it's a bunch of marketing bologna that doesn't do anything at all.

Wilson, however, produced a line of racquets several years back that actually had a piece of vibration dampening rubber/plastic in between the handle and throat. It worked, but wasn't popular.

Babolat probably decided to steal the idea, modify it, and market it towards all the people who think stiff Babolat racquets are the cause of their elbow and shoulder issues...

Say Chi Sin Lo
12-02-2012, 05:11 PM
I thought the original idea belongs to Head with its Suspension Grip. Which actually had an internal apparatus inside the grip that spins/rotate/move to dissipate the shock of the frame? It just breaks all the time that's all.

RoddickAce
12-02-2012, 05:14 PM
http://tt.tennis-warehouse.com/showthread.php?t=222508