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#41 |
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Rookie
Join Date: Jun 2004
Posts: 113
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@XFull
1) Thanks for that helpful thread! 2) You gave us a link to traverajm "how to set your rac. like an ATP pro" In step 6 is a formula where to find the balance point: R=44,57/sqrt(M) I have one rac. Prince EXO3 Rebel 95 where this formula works together with lead at 7" from butt perfectly. By the way I have 12g at 52, 10g at 7" that brings the rac. to an overall weight of 379g (13.37), 310mm bal. point(10.4HL) and a SW of 356. This must be an excellent depoarized setup. So far so good! With most of other rac. you canīt use this formula exactly, because bringing the SW around 355, reconmend counterbalance lead, directly to the butt cap and this is not the idea of a depolarized setup! My question now: What is more important? ) bringing the rac. in the near of SW 355, counterbalance at 7", and have a bal. point of about 320mm (7pts HL) or ) following the formula but then you will acieve only SW in the 340 range or less? |
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#42 |
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New User
Join Date: Oct 2009
Posts: 24
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Thanks xFull for the detailed explanation on lead placement can't wait to try it out
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#43 |
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Legend
Join Date: Jul 2009
Location: Atlanta GA
Posts: 8,447
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So what is someone with a 2HBH to do? If the ideal spot on the handle is 7" from the end. That will put it right under your top hand.
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Wilson Black Blade 104 (since 5/1/13) - NXT Tour / Copoly at 55/51 |
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#44 |
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Semi-Pro
Join Date: Aug 2009
Posts: 694
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Yes, excellent info from xFull...So if I understand this correctly, if I were to try to make one of the newer lighter Head Radicals feel like one of the older classic ones heftwise, I would want to put lead tape at 3&9 and top of the handle? I remember reading here how someone was asking what newer racquets would make a good replacement for an older Head Radical and someone else recommended the Liquidmetal Radical, but to add lead tape to it...though they never explained where on the racquet and how much.
Last edited by ace0001a : 11-03-2009 at 10:47 AM. |
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#45 | |
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Hall Of Fame
Join Date: Sep 2009
Posts: 1,778
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Quote:
Polarized - better for heavy spin users. Depolarized - better for hard (especially flat) hitters. I'll go edit it now. ><
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[K]Six.One Tour (3) 367.5 grams 31.7 cm balance. Mains: Babolat/Wilson Natural Gut @ 49 lbs // Crosses: Luxilon Alu Power Rough @ 46 lbs |
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#46 | |||||
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Hall Of Fame
Join Date: Sep 2009
Posts: 1,778
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Quote:
And swingweight increases anytime you add lead anywhere on the racket. The farther up it is though, the higher the swingweight increase. If you want to experiment, put 20 grams in the buttcap, and swing it. Then take out that 20 grams, and put 20 grams at 12 and swing it. You'll notice the weight at 12 significantly increases the amount of weight you feel when you swing the racket. And 7" above the buttcap can be used by anyone. I personally find anything higher up makes it more difficult on the serve and forehand, but some people can easily handle it, and for them I either suggest more lead at 7" above the buttcap, or stick with the lead higher up at the same amount. Really though, if you play a two handed backhand it shouldn't be that much of a problem. The weight is still closer to the contact point than the buttcap, which will give you more power than putting the weight in the buttcap. And one inch will be noticeable, but probably not huge. 3 or 4 will be pretty big though, depending on how much you put there. I used 10+ grams, so every inch of difference is quite significant to the resulting feel and swingweight. Quote:
If you could measure the mass, balance, and swingweight of both rackets as well as describe as accurately as possible the difference you notice in power, spin generation, plow through, stability, and so on. I think mass, balance, and performance should suffice. Swingweight IS important, but it's not as straightforward to calculate as the rest unless you have a machine that measures it. Quote:
I've heard about problems with that equation as well, where the racket is already depolarized (meaning the racket company made a good racket with a good setup in the weight distribution). The thing when you try to depolarize a racket using this procedure is that since the polar moment of inertia is already low, to lower it the weight has to be placed lower. Sadly, this results in less power although the general goal is achieved. In such a scenario, I say just build up on where it already is instead of trying to lower it. This is why 7" above the buttcap works so well for most people. It's a place where heavy amounts of added weight is still very manageable while still high up enough to get a little more power on the ball. I say if you know what your final swingweight and mass you want to have, then go for that, because there's pretty much only one way to get there. If you follow the guidelines he posted, there are troubleshooting steps at the end as well as a note to not fear tweaking it to whatever you feel works the best in your hands. I personally start off with weight in the head and test out how it feels. If it feels good, then I'll counterbalance it (since it doesn't increase swingweight by that much). Once I'm done counterbalancing it, I modify how high/low and how much I use through trial and error. Nothing matters more than how the racket feels in your hand when on the court. Generally that produces the best results. Of course, when I polarize a racket, I counterbalance before any trial because it just doesn't feel right without at least a little in the buttcap for me. If you have a general goal in mind, follow that. Then look to fix whatever you did wrong there and try again. Nothing is 100% on the first try. If it is, then you had a pro doing the job for you, and he read your mind and knows you and your game far better than maybe even God. (Or you gave him an excellent description of what you wanted and he did that for you and you were more than satisfied though the truth is that it's still maybe 80% of what it could be.) If you're going without a goal though, you'll be adding lead slowly but in the end you'll find your exact specs for sure. But I say shoot for something, and see if it's close to what you're looking for, then walk from there. More often than not you should be pleasantly surprised (or at least by the second shot you should). Quote:
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[K]Six.One Tour (3) 367.5 grams 31.7 cm balance. Mains: Babolat/Wilson Natural Gut @ 49 lbs // Crosses: Luxilon Alu Power Rough @ 46 lbs |
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#47 |
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Administrator
Join Date: Apr 2008
Posts: 783
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I've just added a few of columns to the worksheet customization tool so you can see all the suggestions in this thread played out in real numbers:
http://twu.tennis-warehouse.com/lear...ionReverse.php I added power potential, step change in power potential, total change in power potential, and plowthrough index. The starting spec input boxes will display starting power and plowthrough after you add your first tape locations. The power is for the center of the racquet and the plowthrough for the center (about 21 inches from the butt end) and for a groundstroke of incoming ball speed of 30 mph and racquet tip speed of 65 mph. BE SURE TO CHECK ALL THE UNITS INPUT RADIO BUTTONS TO MATCH YOUR INPUT NUMBERS OR YOU WILL GET CRAZY RESULTS. |
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#48 |
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Legend
Join Date: Jul 2009
Location: Atlanta GA
Posts: 8,447
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OK, so I took my stock Yonex RDiS 300 and did the "depolarized" thing.....
Replaced the grip with a Gamma Tech Gel grip (which adds 10g), added 8g's to 3/9 and added 6 grams to 7" above butt end and now its got a 345g's static weight and is 7 pts HL. I will measure the SW tommorow, but I would guess it to be about 335. Feels great dry swinging. Can't wait to try it on the court!
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Wilson Black Blade 104 (since 5/1/13) - NXT Tour / Copoly at 55/51 Last edited by JackB1 : 11-04-2009 at 05:47 PM. |
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#49 |
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Rookie
Join Date: Jul 2006
Location: vancouver BC
Posts: 187
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I personally put heaps of lead on 3&9 to help with the stability and the racket won't twist when mishitting a volley.
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2X AG100, HEAD Youtek EXTREME Pro @ 45-57lbs. Sampras=GOAT |
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#50 | |
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Administrator
Join Date: Apr 2008
Posts: 783
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Quote:
![]() Remember, power potential is the percent of impact speed (ball speed plus racquet speed) returned by the racquet. Plowthrough Index is the percent of racquet speed at the impact location (center of racquet) that is retained by the racquet after impact (i.e., "plowthrough"). (If you aren't familiar with all the power toolspower potential, shot speed, sweet spot zones, shot distance, hittingweight, plowthrough, racquet head speedwe have a video tutorial that gives an overview of all these by going to http://twu.tennis-warehouse.com/cgi-...mparepower.cgi and clicking "video tutorial" in the lower left corner of the page. |
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#51 |
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Legend
Join Date: Jul 2009
Location: Atlanta GA
Posts: 8,447
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just a question.......wouldn't getting frame that has the exact weight/balance you like be preferable to leading one up to reach that same point? Or is it sometimes better to have some of the weight concentrated in the areas that you want? In other words, if I prefer a 340 gram racquet....should I get one thats already 340 or get one that's 330 and add 10 g's to 3/9 and the handle?
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Wilson Black Blade 104 (since 5/1/13) - NXT Tour / Copoly at 55/51 |
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#52 | |
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New User
Join Date: Sep 2009
Posts: 66
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#53 | ||
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Hall Of Fame
Join Date: Sep 2009
Posts: 1,778
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Quote:
If you can find one, take a stock racket that plays exactly how you like it to. If you can't, then find something a little lower than what you're looking for, and add lead to make it better. I was actually once considering trading my US K90s for the Asian versions, because I'd have more room to customize and could create a heavily polarized K90 and end up with the exact weight and balance I wanted. Decided against it though, because the K90 played well enough for me, and I was afraid that if I did it, it'd be the exact same thing as the US version, hence wasting my time and money to lead it up. This is why we demo rackets. It's how we look for what works for us. Though you can almost always improve it with a little lead, especially as your game improves. Quote:
If you want more spin, there are 2 things you can do: -move some of the throat weight to the head, and move the rest a little lower -take off some weight The higher and the heavier the counterbalance weight is, the less spin you get overall. This is why the counterbalance weight for polarized rackets is all the way down into the buttcap. Also, the more weight to the head, and higher up, the more spin you'll get. Lowering the weight will make getting the racket around and generating heavy spin much easier, but you get less power (which can be fixed with lower tensions anyway). So it really depends on what you need more - maneuverability or spin? Maneuverability will add some spin, but YOU will have to be the major contributor to produce it. Also, at the net, maneuverability isn't a huge issue. All you need to do with a heavy depolarized racket is to keep the racket in front and block the ball into the open court (sometimes putting a bit of punch on slower balls). A depolarized racket is so stable and has so much power and control that you get a lot for a little at the net. It's like them hitting the ball at a wall. Your main concern should be on getting the racket head up and the strings on the ball with contact out in front.
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[K]Six.One Tour (3) 367.5 grams 31.7 cm balance. Mains: Babolat/Wilson Natural Gut @ 49 lbs // Crosses: Luxilon Alu Power Rough @ 46 lbs |
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#54 | |
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New User
Join Date: Sep 2009
Posts: 66
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#55 | |
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Hall Of Fame
Join Date: Sep 2009
Posts: 1,778
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Quote:
And I'd prefer the counterbalance a bit farther up, but it's your call. You might like it better there.
__________________
[K]Six.One Tour (3) 367.5 grams 31.7 cm balance. Mains: Babolat/Wilson Natural Gut @ 49 lbs // Crosses: Luxilon Alu Power Rough @ 46 lbs |
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#56 | |
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New User
Join Date: Sep 2009
Posts: 66
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#57 | |
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Professional
Join Date: Sep 2007
Posts: 1,381
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Quote:
I am basically looking to add some more stability to this stick. I have been demoing a bunch of sticks lately and none really have blown me away so I figured I would continue to tinker with my current sticks and go from there- After reading this thread and posts I have configured 2 of my prince tour diablo mp as follows. Standard stock stats for the Prince Diablo MP from TW: Length 27.25 Static: 11.3oz Balance Point/HL 12.6"/32.5cm SW:310 (Each racquet has a Pro Supex overgrip (.2oz) and a Sampras O dampner at .1oz making it strung, OG, dampner static weight of 11.6oz per the digital postal scale I have) #1: I added 6.75g at 22" (closer to 9/3) and also 8g 7" from bottom of grip. New static is 12.1oz Balance 12.55in SW #2: I added 3g to 12 and also have 5g at 3/9. New static is 11.88oz Balance 12.7in SW?? I would love to know what the new SW measurements are on these setups--I promise I have tried numerous times to use the worksheet but can not seem to get it to ever work for me--any tips or assistance is greatly appreciated. Last edited by Kcraig : 11-08-2009 at 05:03 AM. |
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#58 | ||
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Hall Of Fame
Join Date: Sep 2009
Posts: 1,778
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Quote:
Depends on the setup I want though. If I want more spin, the counterbalance is moved lower. If I want more power and stability, I move it farther up. Quote:
Based off my approximate guess of the distance of 10&2 for your racket, your final swingweight that I found using their calculator for racket #1 is 338.25. And off my estimate of the distance to 3&9, the final swingweight of racket #2 is 338.15.
__________________
[K]Six.One Tour (3) 367.5 grams 31.7 cm balance. Mains: Babolat/Wilson Natural Gut @ 49 lbs // Crosses: Luxilon Alu Power Rough @ 46 lbs |
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#59 | |
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Professional
Join Date: Sep 2007
Posts: 1,381
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Quote:
I Am playing later today and am interested to check out the setups. Thanks and I will keep playing with the customization worksheet some more Last edited by Kcraig : 11-08-2009 at 05:02 AM. |
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#60 | |
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Professional
Join Date: Sep 2007
Posts: 1,381
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Quote:
Does adding the weight at 7" have just a minimal effect on SW--mainly anything above 3/9 is where the bigger jumps in SW come into play, with 12 obviously having the biggest boost with less weight being added? |
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