Recent content by David at Unholy Rackets

Almost right, but the wrong way round: the longer the string, the more the tension head will stretch the string, and vice versa. Whatever, the tension in every string will always be the same because the machine will pull with the same force.

No it won't. According to Hooke's Law the string will stretch an amount proportional to its original length in response to an applied force (tension), so if the same tension is applied to two different lengths of string the stretch will be in constant proportion to the original length of the...

I suggest that it doesn't matter what the ERT (or any other similar device) actually measures as long as it is intuitively something that varies as the string tension varies. You can then measure the DT (or whatever you want to call it) and record that figure together with the tension that the...

I have just received my ERT300, so I was very interested to read this thread. I quite agree that the actual tension of string in a racket will not be the tension at which the stringer pulled that string. However, all other things being equal (and the relevant things are equal, I would argue) the...

I have a gen 2 Pure Strike with that cracking. I have heard it is common with that particular racket. Doesn't seem to affect it's performance, though I guess a really good player would notice. I think the "designers" at Babolat got their calculations wrong.

This really works - a great tip!

Complete misconception "the crosses will be tighter than the mains since they’re shorter" and incorrect science as well. It doesn't matter how long a length of string is - if it is pulled to a certain tension it will be at that tension along its entire length. HOWEVER, the cross strings are...

The question is, really, do these hairline cracks matter? That is, do they affect the way the racket plays or feels, and will they develop to the point where the frame breaks?