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GregN
02-04-2012, 06:18 PM
An issue that bothers me is the relationship between the number of strings[mains] and the assumption of how the racket will perform,
ie 18 mains = less spin
16 mains = more spin

However as a person who predominately plays with topspin I rely on the ability of the racket to induce spin, but what I have found is that the number of mains is not as important as the actual spacing of the strings, with some 16 main rackets having the strings as close together as an 18 main racket.
A few years ago I purchased a Head Radical Team 102 with a 16x19 pattern, but after playing with the racket for a while I realised is was not getting any more spin than the 18 mains racket I had swapped from, measurement of the spacing of the main strings revealed they were the same as the 18 mains racket confirming my feelings.
Below is a list if my rackets and the main string spacing
Rossignol Vectris 16x19 11.5mm
Prince 107 16x19 11 mm
Prince OS 16x19 10 mm
Head LM2 106 16x19 11.5 mm
HEAD RAD TEAM 102 16x19 10mm
Head LM rad 107 18x19 10mm
Head pres classic 18x20 10mm
Head rad tour 630 18x20 10mm
Head Ti 107 16x19 10mm

I was wondering if in future it would be possible to include the spacing measurement of the mains and horizontals to confirm whether or not the racket is actually an open string pattern or a dense string pattern so you are not just going on the number of strings which can be misleading.
As I said originally my Head Radical Team had the same spacing for ten of the mains as the 18 main rackets, the last couple of mains on the outside of the stringbed were spaced further apart but they are not going to be used
anyway

Cheers Greg

in_ten_city
02-09-2012, 01:38 AM
Excellent observation. I have too noticed that certain "dense" string patterns aren't that dense at all. I will measure the spacing of some of my rackets and hopefully post them in the future.

jorel
02-09-2012, 06:30 AM
another request...i know temperature also impacts the flex of a racquet,,, can you also measure the surface temperature of the racquet and list that along with the stiffness measuremnet


but seriosuly..im sure it wouldnt be too hard for TW to address string spacing during a review but to do it on every single racquet would be a bit much to ask for

or you can make a specific request and/or call them for a particular racquet

GregN
02-09-2012, 01:41 PM
As I said originally, I would only expect it to be done on future reviews. The problem is that many 16M have a dense pattern for the middle 10 strings and then a much wider spacing for the remaining 3 strings on each side thus they play like an 18M racket. The spacings of the mains on many rackets is not even across the whole stringbed - just taking the number of mains as an indicator of how the racket will play can be very misleading.
Cheers Greg

GregN
02-09-2012, 02:08 PM
My Head Radical Team has a 16x19 pattern.
The central mains are spaced at 10mm [the same as most head 18M]
The last mains [furthest out] are spaced at 18mm
As you can see the racket is basically an 18M racket with two mains missing from the outside of the stringbed.

Cheers Greg

in_ten_city
02-09-2012, 07:52 PM
I have some data on a few Radical MPs. I measured each gap of mains on 3 Radicals, LM, YT and YT IG. Here is that data in MM...


GAP----LM----YT----IG
9-8-----12.5--11----14
8-7-----11----12.5--11
7-6-----11----12.5--11
6-5-----11----11----11
5-4-----11----11----11
4-3-----9.5---11----9.5
3-2-----11----9.5---9.5
2-1-----11----9.5---9.5
1-1-----9.5---9.5---9.5

(MARGIN OF ERROR: +/-1MM )

in_ten_city
02-09-2012, 08:16 PM
Here is data from my only 3 16 mains rackets- Dunlop AG 4D 300; Bio 200 Tour; and YT IG RAD Pro. Data is in MM...


GAP----PRO----200----300
B-8----27----??----29.5
8-7----15-----15.5---14.5
7-6----14.5----14-----13.5
6-5----13------14-----13
5-4----13------12.5---12
4-3----12------11-----13
3-2----11------11-----11
2-1----11------9.5----12
1-1----11------11-----11

(Margin of error: +/-.5MM)
(Please note that the 300 is the only racket with a 98 sq in head and has only 6 grommet holes in the throat as opposed to the others which have 95 sq in heads and 8 grommets holes in the throat.)

in_ten_city
02-09-2012, 08:32 PM
The last racket i have in my possesion is prob considered to be the most dense string pattern of all the mainstream rackets, it is the YT IG Prestige Mid. Here isthe data in MM...


GAP--MID
9-8--12.5
8-7--12.5
7-6--12.5
6-5--12.5
5-4--11
4-3--11
3-2--9.5
2-1--11
1-1--9.5

(Margin of error: +/-1MM)
(Both the YT and YT IG Radical MP are more dense in the center 8 strings)

GregN
02-10-2012, 02:56 AM
I realise, at first glance, there does not appear to be large difference between the smallest mains 9-10mm, and the largest at 11.5mm, but when you take into account the diameter of a tennis ball there is at LEAST one less main in contact with the ball with the wider pattern - 6 as opposed to 7, which I believe makes a noticeable difference in the feel and spin potential of the racket.
cheers Greg

travlerajm
02-10-2012, 11:23 AM
I recommend using the distance between the 8 center mains (measured from center of the string).

A dense racquet might have about 70mm distance. A very open pattern can be up to 90mm distance.

Racquets also vary with the spacing of the crosses. For example, a Diablo mid and an RDS001 mp have mains spaced about the same, but the diablo has much dense crosses, making it much more accurate on volleys.

I think it would be great if we could generate a database containing 3 new pattern density numbers:
1. 8 center mains distance in mm = A.
2. 8 center crosses distance in mm = B.
3. average opening area in sqmm of 8x8 center grid = C = (A x B) / 49.

For example, a typical somewhat dense racquet might have A = 77, B = 85, C = 134.

For my diablo mid, C = about 125.
For my Profile 2.7 OS, C = almost 180!

Xpherex
02-10-2012, 03:22 PM
Very interesting thread I would like to know Kinetic Pro 5G Classic and Ionic Ki 5

FearOfTheDark
02-10-2012, 08:08 PM
Greg's join date is 2005 and only 14 posts. Nice haha and thanks for the info :)

GregN
02-10-2012, 09:39 PM
Greg's join date is 2005 and only 14 posts. Nice haha and thanks for the info :)

Quality not quantity

Cheers

Veninga
02-11-2012, 03:47 AM
Very good idea.

I will post my measurements as well. Every racket-addict should help as well, then this will be sticky thread soon!

Veninga
02-11-2012, 04:34 AM
Tecnifibre T Flash 300: 12.5 x 12 mm
Volkl Organix 10 295: 12 x 12 mm
Wilson BLX six one 95 309 gr: 11.8 x 11.6 mm

Veninga
02-11-2012, 04:36 AM
Head Youtek Extreme MP: 12.2 x 11.1

ricki
02-11-2012, 08:42 AM
Sweetspot gap:

Prince Ignite (team): 11,5
Prince Rebel 98: 10,5
Prince Rebel 95: 9,5
Prince O3 hybrid tour: 11,5
Prince Speedport tour: 10,5
Head Prestige tour 660: 10,5
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Conclusion: Spin = your leg work