Reporting the mass of your uncut rubbers

Brand: Palio
Rubber ID/Model: CJ 8000 Biotech (jap sponge 36-38)
Thickness: max
Color: black
Uncut Mass: 66 g
Length: 165 mm
Width: 166 mm

dingyibvs wrote: Acuda S3 Max: 58.5 grams uncut.

Edited by JacekGM - 09/08/2013 at 11:12pm

HOW TO CALCULATE THE RACKET HEAD AREA BY USING A JEWELRY BALANCES.

Blade's head area (summary for 14 blades):

Classic head shape. =200 cm2
Oversized head shape = 215 cm2

You may opt to find an exact area of blade(s) of your own.
We would suggest a witty methode to calculate the head area using a precise digital balances (reading to 0.01g) plus A4 sheet of hard cardboard material.
I like it best of all, for invariably giving me true results.

1. Copy down the racket head onto the cardboard sheet and cut the contour out.
2. Find weight of the cutting   (W)
3. Cut out a 10x10cm rectangle from the head shape and weigh up the rectangle (P)
4. The racket head area (S) = W/P x 100 cm2

Have a fun !!!

Brand: NITTAKU
Rubber ID/Model: (ITTF 54-007) Hammond Pro Beta
Thickness: 2.1 mm
Colour: black
Uncut Mass: 61.2 g
Length: 177 mm
Width: 166 mm

0.208 g / cm2

Brand: XIOM
Rubber ID/Model: (ITTF 79-008) Vega Europe
Thickness: Max
Colour: red
Uncut Mass: 56.9 g
Length: 168 mm
Width: 168 mm

0.2016 g / cm2

Brand: Yasaka
Model: Mark V
Thickness: 2.0mm
Color: Red
Uncut Mass: 60g
Size: 171mm x 172mm
g/cm^2: 0.204


Brand: LKT
Model: Rapid Speed
Thickness: 2.0mm
Color: Black
Uncut Mass: 55g
Size: 165mm x 164mm
g/cm^2: 0.203

JacekGM wrote: @Rich 215 Wait a second, Rich, they do report the weight of the blades as a median, why not do that for the weight/area  parameter of the rubbers? It still would be very useful. Yes, you are right there is variability, but is it really that large?

While I agree with you that it would be useful, perhaps ask yourself this question: "What's in it for them?". I think that by giving a weight, they may potentially lose part of their potential customers, who might dismiss it purely based on the weight.

@Rich 215

JacekGM wrote: Weight/area: to me, this is the one parameter that I feel is missing in the major catalogs of TT rubbers. Is there a reason for this? Anyone?

Impossible task for a manufacture to label ever rubber.....  There are way too many variances in cut sizes and weights within the same rubber production run.  Even ESN rubbers of the same exact rubber, I have seen varying weights and different cut sizes.  Though the ESN rubbers I use most....the amount of cut size difference is small but the weight difference can be bigger because of the sponge production does not allow for exact quality control of density, weight, thickness in a large piece that individual cuts come from.  Good example of this is the production of the DHS sponges.  

So, for a manufacture to state any weight or cut size.....that would be harder to do than a manufacture putting the blade weights and exact thickness on the packaging.  There are variances in production and if they did do this....you would see a blade weight listed more realistically as  85g +-12g.  lol     Rubbers would be worse.   A rubber uncut weight could be  66g +- 8g, density 42 +- 4, thickness 2.2mm +-0.5mm, size 169x170 +- 6mm.   lol  

Uncut DHS commerial H3 black neo, 40º, just 64 grm

Aha... got it. Thanks, Brainstorm,  initially I could not open the first four pages. 

Weight/area: to me, this is the one parameter that I feel is missing in the major catalogs of TT rubbers. Is there a reason for this?

Brand:  Donic
Model:  Bluefire M3
Thickness:  Max
Color:  Black
Uncut Mass:  64.8g
Size:  16.7cm x 16.8cm
gm/cm^2 = 0.231

Brand:  Xiom
Model:  Vega Europe
Thickness:  Max
Color:  Black
Uncut Mass:  57.6
Size:  16.9cm x 17.0cm
gm/cm^2 = 0.199

Brand: Donic
Rubber ID/Model: Bluefire M3
Thickness: max
Colour: red

Uncut Mass: 66gr
Length: 170mm
Width: 170mm

Edited by piligrim - 02/02/2013 at 4:07pm