Matching three Blade racquets

[Moonballer]

I have three Wilson Blade 98 16x19 v7 racquets.
I customized one racquet (strung) and when I was happy
playing with it I tried to copy all the specs to other two racquets.
All three racquets are bought at different times (9/20, 1/21 and 4/21)
There were difference in weight between them but the final weight
is exactly the same on all racquets. I had to play with the tungsten
tape a bit but I'm happy with the result.

Here are the final specs:

Original Racquet
Strung weight: 340,0 g / 11,99 oz
Balance: 32,80 cm / 12,91 in / 4,7 HL
Swing weight: 341 kg-cm2
Tungsten tape: 4,6 g @ 10&2

Racquet 2
Strung weight: 340,0 g / 11,99 oz
Balance: 32,70 cm / 12,87 in / 5,0 HL
Swing weight: 340 kg-cm2
Tungsten tape: 4,1 g @ 10&2

Racquet 3
Strung weight: 340,0 g / 11,99 oz
Balance: 32,75 cm / 12,89 in / 4,9 HL
Swing weight: 340 kg-cm2
Tungsten tape: 4,0 g @ 10&2


Strung weight includes:
Racquet
Solinco Confidential 1.25 strings @ 24 kg / 52,9 lbs
Wilson Premium Leather Grip
Wilson Pro Overgrip
Tourna Grip Band
Luxilon Legacy Dampener
Wilson Tungsten Tuning Tape

 

[StringStrungStrang]

Good work! How are you measuring swing weight? I have never tried.

 

[FoldingChair]

I’m a dumbo and went right to the specs and thought damn, Wilson gave this person a good batch. I should remember to read. Nice job OP

 

[CosmosMpower]

I’m a dumbo and went right to the specs and thought damn, Wilson gave this person a good batch. I should remember to read. Nice job OP

LOL that would be a minor miracle.

 

[Moonballer]

Good work! How are you measuring swing weight? I have never tried.

Thanks! I used this method shown in this video:

Don’t know how accurate it is…

 

[StringStrungStrang]

I will check it out - thanks.

 

[Irvin]

@Moonballer on #2 and #3 you can increase the SW some by separating the weight you placed at 10&2. Move 1/2 the weight up to 12 and the other half down by the same distance. This will not change the weight or balance any but will increase SW. You can calculate the SW increase using I = mr^2? Where m is the mass you’re working with and r is distance between the distance up or down (not both.) This will put 1/2 the weight around the 3&9 positions. Again you can increase the SW by dividing the weight in half and moving it up and down. This method allows you to match the SW in addition weight but it will not change you balance.

The method you used to calculate SW will get you in the ball park for SW. But I found that as you varied the cross string used as a pivot you got different values. @stoneage showed how to get a better reading using SwingTool in a post. No matter how you go about measuring SW by pivoting the racket on a cross you are going to introduce error because the fulcrum is rolling on the string.

 

[Moonballer]

@Moonballer on #2 and #3 you can increase the SW some by separating the weight you placed at 10&2. Move 1/2 the weight up to 12 and the other half down by the same distance. This will not change the weight or balance any but will increase SW. You can calculate the SW increase using I = mr^2? Where m is the mass you’re working with and r is distance between the distance up or down (not both.) This will put 1/2 the weight around the 3&9 positions. Again you can increase the SW by dividing the weight in half and moving it up and down. This method allows you to match the SW in addition weight but it will not change you balance.

The method you used to calculate SW will get you in the ball park for SW. But I found that as you varied the cross string used as a pivot you got different values. @stoneage showed how to get a better reading using SwingTool in a post. No matter how you go about measuring SW by pivoting the racket on a cross you are going to introduce error because the fulcrum is rolling on the string.

Thanks a lot Irvin! Nice info!