I am sorry but you are either too self absorbed to see this or simply mentally challenged...I have been here since 2004 and have never had issues with any posters here but you are clearly too thick...

In interest of time I quickly calculated TWU values for you to show you that we are roughly talking about the same thing and that 312 reported value of Nadal racquet amounts to the same value that you saw for SW...

as I said before 24 grams included dampener but you are one of those people that tries to FIND mistakes to try to discredit people so be it.

Bottom line is Goffin is using blade and that was confirmed by few people that know him and that string his racquet so I'm not sure why are you pushing your agenda

First of all I said im not surprised goffin uses a retail based racquet. Layup and mould make far less difference than a lot of people act out.

But again, the calculation is fundamentally incorrect. I see why you think I am thick. The 24 grams if it includes damper in standard placement is completely un representative. Since when do you put your damper 22" up on the frame? Above the middle of the stringbed? That's completely not legal, and I've never seen anyone do that. So first you need to seperate the weights. Most dampeners are between 2-3 grams for the button or two string style. A few of the larger square ones weigh more, and a lot actually weigh less. I've never measured a babolat O dampener to weigh more than 2.5ish grams. BUT for the sake of being completely concise, I will use your value of 4. To CORRECTLY calculate this weight, you have to put it in the correct location (or length) of the frame. Which is roughly 16". Putting it at 22" literally multiply the swing weight added by swingweight 3 times. Do you use your damper in the middle of the frame? I've never seen rafa do this. But that's basically what you input in the calculator.

Which brings me to my next point. 22" is too high. 20" is a better approximation, but it still reads slightly high. I've taken 19-20 gram string beds out consistently get 309 sw unstrung and 340 strung. For my racquet, 20grams of stringbed gets me 31 swingweight points. Interestingly enough, so does 21 gram stringbeds. The calculator will read a 21 gram stringbed higher than a 20 gram by two swingweight points, which is outside the 1 swingweight point margin of error. Why? Because the weight point we use for length is only an approximation. The calculator is intended to work with linear mass distributions, and that each mass is

*centered* about that length. The stringbed, although quite symmetrical, and has many weight distributions, has crosses that don't span the same width, and mains that don't all have the same length. So the actual center of mass (of the strings) is a bit different than where we would expect it to be (around that 20.2" inch mark for some frames, some a bit higher but usually on a 27 inch frame its about 20"). Now for 3/9 because we are working with a lead strips that are much simpler to know exactly the center of mass, we can use 20" or 20.2 or 22 or whatever. But for stringbed we have to be careful, because with the amount of weight in a stringbed (20 grams) at that height the difference between 22" and 19.5 is about 8 swingweight points on a machine. Well outside what we can consider machine margin of error.

Look, I'm sorry if you took offense to my statements. But the way you input the weights in the calculator are incorrect. Therefore the data you received is also incorrect. In 2011 the swingweight rafa had was roughly 357. It could be one or two above or below easily, just from machine differences. A 316 unstrung spec is not close to that. I've seen Paul Reed's chart for swingweight increase by string. I definitely did NOT look through all of it, and only saw a few numbers that I cared about. I later recorded the numbers that mattered to me to help me figure out what I've posted above. I've never seen a 16x19 with a standard gauge go above 31 swingweight points. Considering rpm 15l is not heavier than other poly's I doubt it would yield more than that. Either way, no string is going to add 40 swingweight points in an aeropro drive. Not even all VS natural gut 15l, which is one of the heaviest strings you can buy.

The 316 spec might have been what he used 2009 from what greg raven has posted, but it is definitely not 2011. Which makes me say, why would someone specifically claim that's what he used if he didn't? I do remember reading that rafa and toni said they made changes, and they bumped up his sw by adding x grams somewhere. Again. Rafa and toni aren't totally honest about the inner workings of his game, and at the level he competes, they truely shouldn't be.

If you think I'm wrong, then please by all means get your racquet measured on an RDC. Take a picture of the sw. Cut out the string, and have the racquet measured on the same RDC. Then just weigh the strings you've cut out. You can easily work backwards from there with the calculator to figure out where the middle of the weight distribution is. Again the calculator needs proper inputs to give accurate outputs.

The reason why I said you don't know what you're talking about, isn't because your post count, or that I have an agenda against you. But because those errors you made while calculating go against common sense. And that anyone who's actually worked with racquets and real life calculations/real life RDC, will know, that you can't put the weight of the dampener at 22", the weight of the string that high, and can't get realistically get 46 swingweight points out of strings and a dampener (at least not in standard above the neck dampener placement). Like immediately that would set off a red flag in an mrt with any kind of modification experience.

With the weight placed correctly, you get a 351 swingweight. Maybe 352 if the machine reads high. But again I've never seen a bab hollow O dampener weigh more than like 2.5 grams (think about it for a second, they're tiny and have a hole straight through the middle). So by my calculations it would at most come out to be 350. It would even be rounding up from 349 with the dampener. Strung, 347.3.