Results 18 to 34 of 55
07-04-2013, 08:14 PM #18
07-04-2013, 08:16 PM #19
Strings can vary from 2.8g zm62 to 3.6g zm70 and can shift bp by 5-8mm.
A 7g rkep g09 overgrip will shift bp 10mm.
So you see, if you want to be quantitative about this , there's really no point comparing any racket unless it's bare dry.
Last edited by visor; 07-04-2013 at 08:19 PM.
07-04-2013, 10:43 PM #20
its difficult to make proper technical, sensible data,
but it could be interesting to see the BP and head weights that people are using on their racquets they play with, with everything in.
not many people stick to the original grip, and even grips have variation, i.e. karakal PU, green was like 19 grams, orange was 17 grams, some other color was 15.98 grams etc.. plus i do not grip the full length, i cut the grip by 6-7 inches. too many contributing factors for variability..
07-05-2013, 09:14 AM #21
Now, if you had 30 BP entries for a racquet say ranging from 280 to 290, then the higher BPs are probably due to thicker gauge strings and vice versa. But the average of these 30 BPs would have catered for the distribution of thin and thick gauge strings, unless of course, everyone uses the same gauge strings for the same racquet – which is unlikely. But even then, would it really matter? When someone tells you that their Arc10 measures 287mm would you assume your Arc10 with the same strings would measure exactly 287mm? No, because there are so many factors involved. You would probably expect some diversity, so my view is, don’t be too precise about it otherwise you’re missing the point of the exercise which is to plot a point on a graph... but enough to get some meaningful information.
If you only have a few BPs for each racquet, then maybe it’s not so meaningful. But as the number of entries increase, there will be a convergence towards a common BP or at least an average BP can be interpreted. And that average BP may not be how the racquet came out of the factory, but is a good realistic representation of BPs of “in use” racquets.
Afterall, very few people who know what we are talking about here, would use a racquet as it came out of the factory.
Excellent work OP, I think you’ve hit on a great idea!
If people are still concerned about string weight (I personally don't feel much point) then you could note the string type in your survey as well.
07-05-2013, 11:50 AM #22
just for fun.. i took out my armortec 700s, 2 strung for playing and gripped, 3 for keeping
Unstrung, ungripped weight, BP and headweight
91.75g 306mm - 41g
92.28g 307mm - 40.8g
89.89g 314mm - 41.4g
Strung with zm65, gripped with 1x karakal super PU,
108.3g 298mm - 44.43g
107.7g 297mm - 44.93g
07-05-2013, 12:12 PM #23
didnt want to unwrap the 4ug5 vt80PG that i had in storage, so here are the measurements of the other 3 that i play with
Strung, Original Grip + 2 overgrips weight, BP and headweight
97.65g 300mm 42.90g (4UG4, strung with Nanogy98 0.66mm)
97.92g 300mm 42.85g (4UG4, strung with Gosen R4x100 0.63mm)
102.43g 299mm 43.65g (3UG4, strung with 66 Ultimax 0.66mm)
07-05-2013, 12:22 PM #24
In my opinion, I think the data should be measuring dry weight (no grips or strings attached) to get the optimum data. The grip and string weight is different from everyone. I do think tension changes the weight of the string/racket head because the weight of pre-stretching the string/ is different from the weight of the string being stretched. Why not we just take a ruler and a weighting machine to the nearest sport shop that sells racket and start measuring three since all new rackets(except for the antiques one) are not strung and have dry weight and bp.
07-05-2013, 04:09 PM #25
07-05-2013, 04:16 PM #26
Definitely no overgrip or factory grip removal, as it would have too much confounding effect on bp and total wt.
07-05-2013, 04:20 PM #27
Holy macolies! Those are some high head wt rackets. No wonder you have a sore shoulder. Your FB head wt is probably only 32.6g dry in comparison.
07-05-2013, 04:28 PM #28
Just string with stock grip is fair cause not all of us have the patience to buy an unstrung racket, take it home, do measurements and then take it to get strung .
And definitely no stock grip removal. I picked up a Legend II on a trade and it had a towel grip on the bare wood and with bare wood, the BP was either 333mm or 335mm. I'm waiting on some Victor replacement grips to arrive so I can get a better measurement. The only RKEP replacement grips I have are the King Grips and they weigh 19 grams!
07-05-2013, 05:05 PM #29
In any case I agree with R20190 on the string weight. For a range of 0.5gr. and the purpose of this topic it's not a very significant difference. Furthermore if we stick to middle of the U range for weight, take 3 or 3.5gr. for strings so say 3U = 87.5gr unstrung and 91gr. strung then we can attribute all extra weight to grip modifications, unless we have some of those with athletic tape and other cr*p on it .
But I guess to keep it simple as, a strung or unstrung with only stock grip should get enough data points. I don't think the stock grip is all that heavy btw, think I still have one ArcSaber grip lying around and iirc it only weighs ~8gr.
Last edited by demolidor; 07-05-2013 at 05:14 PM.
07-05-2013, 05:21 PM #30
Let me correct that into: the purpose of creating a racket chart
07-07-2013, 07:03 AM #31
Not sure if you have sorted out what details you want added yet with regard to condition of the racket before weighing but these are all with factory grip only and bg65ti stringed. For this reason I have not input them on your site @tadhashi but have left you the detail below for your use.
RACKET NAME WEIGHT LENGTH BP FLEX VOLTRIC 80 91g 680 310 3(55mm) ARCSABER Z SLASH 88g 680 303 4(58mm) ARCSABER 11 91g 680 306 3(54mm) VOLTRIC Z FORCE 91g 680 320 2(53mm) VOLTRIC Z FORCE LTD 91g 680 320 2(53mm) VOLTRIC 70 88g 680 307 3(55mm) FLASHBOOST 76g 680 297 4(59mm) NANORAY 800 92g 680 292 2(53mm) NANORAY 700RP 88g 680 299 3(54mm) ARCSABER I SLASH 91g 680 287 5(61mm) ARCSABER 9FL 88g 680 303 5(60mm) NANORAY 600 86g 680 294 5(60mm) VOLTRIC 60 87g 680 304 5(60mm) NANORAY 700FX 88g 680 300 4(58mm) NANORAY 600 86g 680 294 5(60mm) VOLTRIC 50 93g 680 314 3(56mm) NANORAY 500 87g 680 300 4(58mm) ARCSABER 7 91g 680 306 4(57mm) ARCSABER 8DX 91g 680 302 4(58mm) NANORAY 300 88g 680 292 4(58mm) ARMORTEC 900P 89g 680 313 3(54mm)
07-07-2013, 08:13 AM #32
I think you can fill them in as strings only but I'd leave out the flex of the ones you have not used and change the length to 675 or 674 ... Some measurements are wildly different from ones reported here but I guess with enough entries it should not be a problem.
Last edited by demolidor; 07-07-2013 at 08:19 AM.
07-07-2013, 02:47 PM #33
Yeah you are right I lifted the measurements from direct sport. I buy my rackets from them and their measurements are always spot on. I know this because I have checked it out whenever I have bought a racket. For an unrelated reason I have also weighed these rackets and bp'd them(from yonex stall at uk tourney) and these measurements are correct apart from the flashbooost was not there but I am assuming if they measure every other one spot on then why would they get that wrong??
What measurements are wildly different?? I lifted them because I take original grip off and replace with towel grip, this changes the racket severely, for instance my weight of ZFORCE goes to 99.5grams and bp 212 but the figure originally stated was correct before grip change.
I will say, I have a couple of SPcoded rackets and they are both on the lightest end of the u range, in uk all rackets I have received/measured are on the heaviest tip of the u range. Maybe that's why difference? I have tried all of the rackets above and concur with the accurate measurements of the said website with regards to flex.
I have not entered them in at the site, it would take to long sorry but if I did most of my rackets end up about 100g in weight so seems to me like the measurements entered should be factory grip and strings only for good feedback.
Last edited by craigandy; 07-07-2013 at 02:55 PM.
07-07-2013, 03:35 PM #34
I think the majority is pretty spot on. I entered a Z-Slash yesterday at 301mm and 93gr. (handle still in plastic) for example but for something like the FB, that stood out at the time I read it on their website shortly after release, Visor measured it dry at ~300mm and Direct have it at 292 strung? That is a pretty massive difference and I can hardly imagine what I-Slash at 287mm must feel like, that's about 277mm dry.
But you're right, it's hardly rocket science so must be true measurements and if either was an anomaly it should get filtered out with enough data entries so no big deal. Just happened to have seen some of their recent squash racket measurements and they were clearly manufacturers specs which are well known to be completely rubbish but maybe it has been updated by now as they were pretty new models at the time.
Looking for my ArcSaber stock grip so I can enter 8DX ... it was ~300mm strung with BG65 and stock grip (no plastic) but had since modified the grip. Now that it's unstrung I can restore it to nekkid state (guestimating ~290 bp)
Last edited by demolidor; 07-07-2013 at 03:44 PM.