Does string tension affect swing weight?

[FranzS]

I doubt it does in a noticeable/perceivable way, but:

1. adding just a few grams can increase the swingweight in a sensible way (for example when weight is added at or near the tip of the racquet)
2. the higher the string tension, the more the string gets stretched out so that its linear density (weight per unit of length, i.e. grams/cm or grams/inch) decreases. That means shorter string length (and, consequently, less string weight) is needed when stringing at a higher tension (the real question is, how much shorter/lighter?)

In other words, to what extent does a higher string tension require less string (less weight) in comparison with a lower tension? I know it's just math/physics speculation, but it would be great to have some insights.

 

[FranzS]

Maybe you stringers can measure some data when prestretching strings and share them (tension/elongation)

 

[A_Instead]

Simple to find out...weigh your racket at your typical tension...them weigh it at a different tension..
But besure the knot lengths and sizes are the same..

 

[Injured Again]

For a poly string, going from 40 to 60 pounds may require 3-6 inches shorter length. Assuming six inches and a total strung length of 32 feet and 15 grams of weight, it will be slightly less than one half gram lighter, so about one swingweight unit less. Differences in gauges and densities of various poly strings can result in three grams difference in strung weight, six times as much as the change from higher tension.