I do reuse a (quality) gut in the mains. But I plan this ahead:
- use knots with inserts that can be untight
- remove the gutmains (after I first mount the frame, and cut or remove the crosses)
- cut the gut in the middle, and ty the "old" ends to have the old worn middle part now at the ends...
Just a simple thought-experiment:
- first main is 350mm
- tensioned at 30kg, this string has an elastic elongation of 4%, so the 30kg tension is "stored" in 13mm elastic elongation, 2.3kg/mm
- 5mm compression means 11.5kg tensionloss
Here an example of a testreport from a well reputed machine, the star 5
The top of the towers and the frame are compressed 5mm when only the mains are strung!!!!
I know "reference tension" is "just a number". But I would like my machine to pull te SET reference tension (and not yank an extra 5#)
Edit: I know Babolat makes excellent machines, but 5# overshoot.....