This is a personal opinion based on my findings when stringing one ahead. I'm a club player self-stringing, not a stringer.
As per what I've read and what I have figured out myself, when stringing one cross ahead of the one being tensioned you:
1)Can weave faster and easier because the vertical misplacement of the main strings due to crosses weaving is optimal to the weaving process.
2)When tensioning a cross, the mains tend to push it towards the throat of the frame. This is a tension loss side-effect since once the next cross gets weaved, the previous one will straighten up (the push wont be there) and thus lose tension due to different elongation. One-ahead weaving prevents this from happening as it guarantees that your cross being tensioned will be pulled in a straight line and not forced towards the throat by the mains.
There's a side effect I noticed yesterday and it would be nice if the professionals weight in:
When weaving one ahead, if the string is too close to the previous cross (that is being tensioned), the one-ahead cross will notch. That's because the one-ahead is not under tension and it's forced by the weaving (up and down the mains) to bend. The points where it bends (where it touches the mains) tends to notch by the harder mains. The mains are harder because they are under tension. The material that's under tension has higher stiffness by nature. So the loose cross gets notched if it stays for enough seconds under such conditions.
To prevent this from causing notching at the final result of the stringing process, I weave one ahead, but don't pull all the string through the grommet. I pull just enough to allow me toweave and pull the rest later and to get the benefits of the one-ahead weaving. This makes only the 30-40 last cm of the 6.2m of cross string to notch, which is part of the string that will be cut off at the end of the crosses as there's always extra string when you cut about 6.2m of string for the crosses. That way you get both the benefits of the one-ahead stringing while avoiding notching on the parts of the string that will actually end up at the racquet.
Any opinions ?
As per what I've read and what I have figured out myself, when stringing one cross ahead of the one being tensioned you:
1)Can weave faster and easier because the vertical misplacement of the main strings due to crosses weaving is optimal to the weaving process.
2)When tensioning a cross, the mains tend to push it towards the throat of the frame. This is a tension loss side-effect since once the next cross gets weaved, the previous one will straighten up (the push wont be there) and thus lose tension due to different elongation. One-ahead weaving prevents this from happening as it guarantees that your cross being tensioned will be pulled in a straight line and not forced towards the throat by the mains.
There's a side effect I noticed yesterday and it would be nice if the professionals weight in:
When weaving one ahead, if the string is too close to the previous cross (that is being tensioned), the one-ahead cross will notch. That's because the one-ahead is not under tension and it's forced by the weaving (up and down the mains) to bend. The points where it bends (where it touches the mains) tends to notch by the harder mains. The mains are harder because they are under tension. The material that's under tension has higher stiffness by nature. So the loose cross gets notched if it stays for enough seconds under such conditions.
To prevent this from causing notching at the final result of the stringing process, I weave one ahead, but don't pull all the string through the grommet. I pull just enough to allow me toweave and pull the rest later and to get the benefits of the one-ahead weaving. This makes only the 30-40 last cm of the 6.2m of cross string to notch, which is part of the string that will be cut off at the end of the crosses as there's always extra string when you cut about 6.2m of string for the crosses. That way you get both the benefits of the one-ahead stringing while avoiding notching on the parts of the string that will actually end up at the racquet.
Any opinions ?