Racquet Customization Worksheet

Starting Racquet Specs (be sure to click units buttons)

Length Weight Balance Swingweight Power Potential Plowthrough
in.cm ozgm in.cm (kg·cm²)    

Customization Results (be sure to click units buttons)

Spot to
Add or
Subtract
Weight		 Weight to
Add or
Subtract		 Total
Change
Weight		 New
Weight		 Step
Change
Balance		 Total
Change
Balance		 New
Balance		 Step
Change
Swingwt
(kg·cm²)		 Total
Change
Swingwt
(kg·cm²)		 New
Swingwt
(kg·cm²)		 Step
Change
Power
(%)		 Total
Change
Power
(%)		 New
Power
Potential
(%)		 New
Plow
Index
(%)
in.
cm
oz
gm
                       
                       


Tips and Instructions

  1. TAB or CLICK out of input cells to get results (both location and amount must be entered in each row).
  2. ENTER UNITS: If you don't, default units will be selected which may not be appropriate to the numbers you enter. Many people in tennis think in mixed units depending on the spec. The worksheet gives you maximum flexibility to match units to the way you think. But it also gives many chances to flub it up. Be careful to make units and numbers match.
  3. Output units are in the same units as the racquet specs that you entered, except the cumulative change in weight which will be in the same units as the weight you are adding and subtracting.
  4. Positive and negative add/subtract weights are allowed (e.g., negative for shaving off bumpers or changing grips, etc.).
  5. You can change any input cell at any time.
  6. If you don't fill in the starting specs, the balance output will be meaningless but the change in weight and swingweight will be meaningful — valuable if you just want to know how much swingweight will change for given change in weight at a location.
  7. You can add up to a total of 5 rows for additions/substractions of weight.
  8. You can delete all rows but one.
  9. Enter balance as cm from end of racquet (NOT points headlight or headheavy).
  10. Good tool for WHAT-IF SCENARIOS: for example, what-if I use this vibratiion damper instead of this one? What-if I shave 5 grams from the bumper here? What if I use this overwrap instead of this grip? What-if I add 20 grams of lead tape to the handle? What if I do all of the above?
  11. When calculating effect of bumper removal, grip replacement, etc., figure the weight location difference at the halfway point of the total distance covered by the element you are changing (for example, if the difference in grips is 5 grams and the grip runs 16 cm up the handle, then enter the +/- 5 grams at 8 cm).
  12. By observing the incremental and cumulative results of each weight addition/substraction, you can see the effect of each placement and get an idea what to do next.
  13. This tool is more of a trial and error and reverse engineering tool. If you have a racquet and know what you want its specs to be, the Customization Tool is a much better tool for the job.