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View Full Version : Racquet Experts: Help with quick calculation, please.

Winners or Errors
08-18-2011, 03:06 PM
Well, TW shipped me the two matched 4D 100's I requested, but the specs on the sticker are unstrung. Can someone help with the conversion to the strung specification?

Here's what they both measure, unstrung, with the plastic and vibration dampener on the grip.

Weight: 11.3 oz (I know that equals 320g, so assuming the plastic wrap weighs <1g I'm guessing the gross weight is roughly 334g/11.8oz with the dampener)
Balance point: 12 1/8" (Measured from butt? That's 11pts head-light, right, though I have no idea how much the plastic and dampener add to the handle)
SW: 277

Any help will be appreciated. Not really sure how to calculate the distribution of string mass to arrive at balance point and SW.

Winners or Errors
08-19-2011, 03:20 PM
Bump. No one can just dash this out?

TennisMaverick
08-19-2011, 03:47 PM
Well, TW shipped me the two matched 4D 100's I requested, but the specs on the sticker are unstrung. Can someone help with the conversion to the strung specification?

Here's what they both measure, unstrung, with the plastic and vibration dampener on the grip.

Weight: 11.3 oz (I know that equals 320g, so assuming the plastic wrap weighs <1g I'm guessing the gross weight is roughly 334g/11.8oz with the dampener)
Balance point: 12 1/8" (Measured from butt? That's 11pts head-light, right, though I have no idea how much the plastic and dampener add to the handle)
SW: 277

Any help will be appreciated. Not really sure how to calculate the distribution of string mass to arrive at balance point and SW.

Add 16-18 grams and move the balance 3 pts, approx.

UWBTennis
08-19-2011, 04:25 PM
TM is mostly right, as for swingweight you would need TW method for measuring that, check here: http://twu.tennis-warehouse.com/learning_center/howto_swingweight.php and use the calculator.

larry10s
08-20-2011, 04:09 AM
dampener and over grip about 5 gms