08-29-2011, 12:15 AM #1
Non-isometric head. 2lbs difference main/cross necessary?
I've read some said it's needed and some said it doesn't.
Is there any experienced stringer here that can clarify this?
08-30-2011, 10:11 PM #2
yes, it needs +2lbs at the cross.
unless your racket's frame shape is square.
07-07-2012, 06:56 AM #3
Actually, you'd need extra tension on the mains EVEN IF your head was square
...assuming you string the mains first.
The extra tension (I've actually calculated this as +1.4lb for a symetrically tensioned ISO head with diameter 0.7mm nylon string) is needed because the crosses (strung second) deform the run of the mains (strung first), increasing the length a mains string has to run and therefore increase the mains tension.
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