THE STIFFNESS OF THE BIG 3 RACKETS: ROGER FEDERER, RAFAEL NADAL AND NOVAK DJOKOVIC

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Күн бұрын

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@jlparcerisa Жыл бұрын

Very educational video!, it would have been perfect if they included the Murray racket, since Harry also owns one of those!

@nocturneastro2539 Жыл бұрын

I see some people asking about the retail RF97. My batch of matched v11 measures within +/-1 RA in both the vertical stiffness and horizontal stiffness as the signed RF97 seen in this video. My batch of matched v13 RF97 are within +/-1 RA as well. Hope this helps!

@movdqa Жыл бұрын

I did a test drive of the RF97 and I found it comfortable despite the stiffness and I think that the good twistweight compensates for the stiffness.

@TheRob2D Жыл бұрын

Thanks!

@TheRob2D Жыл бұрын

@@movdqa Natural gut like Roger or a multi in the mains also works great in this frame for this reason.

@joshualeifer3335 Жыл бұрын

always great to see Dan.

@Dasato123 Жыл бұрын

The fact that the RA test machine clamps the handle of the racket that has variable levels of cushion depending on the racket introduces a variable that isn’t being taken into account. When it presses down on the tip the handle wants to move upward. A very thick cushioned grip will compress allowing the actual handle portion of the shaft to move upwards slightly this will allow the tip to move downwards more giving the racket a more flexible reading. A way to test to see if this is actually happening is to take a racket and test it three times. 1) With a cushion replacement grip and over grip. 2) leather grip only. 3) No grip at all. Clamp directly on the pallet. If the test numbers come out the same for all three tests then I’m wrong and forget what I said. If the test comes out with different numbers then it means the test in the future should be carried out using a standardized grip or the RA number needs to be handicapped depending on the type of grip on the racket during testing. If my theory is correct a racket will test stiffest when tested with no grip on it.

@andyv6299 Жыл бұрын

Would multiple grips make a stiff racket less stiff

@Dasato123 Жыл бұрын

@@andyv6299 the actual stiffness of the racket wouldn’t change. But I’m thinking that the machine would give it a less stiff rating number because of the give in the cushioning of the handle as the rackets tip is pushed down. In this test the racket is actually a lever. The middle cross bar that it rests on near the throat is the fulcrum or pivot. As the tip gets pushed down the handle wants to pivot upwards. For the old Wilson “SI” stiffness rating it was said the number was obtained by clamping the racket’s handle and then suspending a kilo of weight at the tip. How much the racket bent downward from its starting position in millimeters was the rackets SI rating. Thus a original Wilson Profile a very stiff racket only bent down 2.7 mm. While a Clash would bend down 11 mm which is it’s SI rating number. What the actual RA number represents I’ve never heard explained. But that’s not really important since the RA number is used to compare the stiffness of different rackets to each other.

@tantennis Жыл бұрын

Thanks! This is very insightful video.

@mact7766 Жыл бұрын

Djokovic uses a decades old radical in 18x 19. nothing currently is similar to it. You are spot on.

@ddeegy Жыл бұрын

Great video! May i ask if you are going to review the new wilson roland garros line of products? and if, when?

@Joaopc_Motta Жыл бұрын

I would like to see a video comparing the stiffness of the rackets that the big 3 use on court to the rackets that we can buy on the market to know if they make big changes on their rackets, like Novak does

@movdqa Жыл бұрын

One of my clubs has tennis ball recycling boxes in the lobby. I'll try to do a video on it this week as I have to pick up a racquet there and drop off some used tennis balls. Also, one of my former partners taught special ed and he used them on chairs as some of his kids don't like additional sounds. I had one guy at work that took a couple of cans as he has dogs.

@bournejason66 Жыл бұрын

Very educational 👍🎾

@zcz2223 Жыл бұрын

Awesome test! Stiffness is truely the most important spec of rackets

@vscope Жыл бұрын

ra meaasuring is useless. its only one number in 1 point. tells nothing about a racquet

@zcz2223 Жыл бұрын

@@vscope But it's the only spec u can't modify. unlike weight, balance or grip size

@vscope Жыл бұрын

@@zcz2223 i see your point but what does a ra value tell you about a racquet? for instance a small head 18x20 ra 62 racquet might be more stiff than a 100 inch open 16x19 ra 68 racquet at impact. a soft small head 18x20 low tw will be more harsh on off center impacts than a high tw stiffer 100inch 16x19 frame. Ra value changes even when using different basegrips. Use a leather grip and ra will rise... use a soft basegrip and ra will be lower. if you want to compare raquet stiffness its better to use the racquet frequency. however this value doesnt take the stringbed influence in account either.

@pacu9 Жыл бұрын

Can’t modify head size or string pattern either

@tenniswziming Жыл бұрын

would love for you guys to measure a shift and clash racquet to see how the numbers match up to what Wilson claims

@tonybryant1839 Жыл бұрын

I remember Romper Room myself! My first crush was the teacher!

@Sandysand701 Жыл бұрын

The Head racket had a broken string, surely that must have an effect on the vertical stiffness, as would string tension and type, there is not much stretch in poly but plenty in artificial gut.

@louiselouboutin9045 Жыл бұрын

can you do this for the entire wilson clash range both v1 and v2's? be interesting to see if the vertical stiffness is different from the stock RA and whether wilson's QC is close to the RA in the specifications. wonder if it is possible to test the twist stiffness given the clash flex's 3 ways 3D

@MauserM18 Жыл бұрын

Can you measure a stock Wilson RF 97 stiffness?

@craigmorgan1617 Жыл бұрын

Coach Dan sounds like Bob Ross.

@mact7766 Жыл бұрын

absolute gold !

@michaelp9061 Жыл бұрын

Absolute gold

@gtye0h Жыл бұрын

Please check the frame resonance frequency

@Javi_C Жыл бұрын

Thanks

@Waceman Жыл бұрын

Please put the clash on this machine

@MingTheAce Жыл бұрын

That shirt is a bit tight man 😅

@BenQ10 Жыл бұрын

The issue about making tennis balls biodegradable or else fully recyclable needs much more discussion. The limited examples of balls getting a “second life” just aren’t anywhere near good enough.

@BenQ10 Жыл бұрын

Wilson Trinitis are a small step forward. A couple of niche manufacturers in Europe (Renewaball and Price of Bath - Phoenix) seem to be making much bigger strides, if only they were widely available.

@WhitWashing Жыл бұрын

Any idea when Babolat will release the new Pure Strike?

@ferdinandbautista984 Жыл бұрын

Even the Recreational & Usta focus on strength programs . We need information for the players instead of being a billboard. Constantly were buying equipment. I just bought new apparel at Tj max because I accidentally ripped my blue shorts by stuffing it with balls