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Thread: Crosses snap at first cross
12-31-2009, 04:47 AM #1
Crosses snap at first cross
I have strung many rackets now, but the last two ArcSabre 10's I've strung have left me really annoyed - I've done these same rackets before a few times without issue, but the last two attempts have seen me fail on the first cross.
I use 2 piece top to bottom stringing with:
Crosses: 1-4 @ 25lbs and remaining @ 28lbs
For these 2 rackets I used BG66 Maxima strings.
Can anyone tell me if it would be better to not tension the first cross off the knot (I've never had an issue with this before...) and tension the second cross?
I've checked the grommets and they are fine - not broken or sharp (at least as far as my eyes could tell). The mains are not broken when the snap occurs so it appears as though the knot is pulling through the grommet and snapping.
Any help would be appreciated!
12-31-2009, 07:00 AM #2
You should string bottom to top. I usually, this is the only time I would do this, I do pull 2 crosses at once, my machines motor is a little strong so I have to do this or else the knot would break.
12-31-2009, 09:05 AM #3
I have seen stringers who only pull the second cross so that the knot does not fall through, but IMO they should just make their knots bigger. I don't recommend it, as you will lose tension on the first cross the will escape and pollute the rest of the bed.
You certainly have the right idea in reducing the tension on the first few crosses - I myself do this when going over 30 - so I recommend you try a new starting knot. I posted a few diagrams of mine in another thread.
12-31-2009, 09:29 AM #4
Lower tension for the first 2 crosses does not affect the the sweet-spot
Lower tension for the first 2 crosses does not affect the the sweet-spot. Perhaps it is better for you to have lower tension for your first 2 crosses.
12-31-2009, 09:36 AM #5
You can make the starting knot larger by a few more helical wraps and/or one more loop in and out.
If you were to tension the second cross first, you could go back to the first cross and tension it. I have tried this method many times.
Are you guys reducing the cross tension near the top in response to keeping the head shape as close to an unstrung one as possible? You might consider a hybrid two-piece top down method - takes more time and effort. Essentially, you have an extra cross string to stabilize the middle part of the frame first. And then you start the cross at the head.
12-31-2009, 12:05 PM #6
12-31-2009, 12:10 PM #7
Is there and benefit of stringing top down or throat up? I always thought that throat up would give a little bit more durability, but have never actually seen a difference overall.
12-31-2009, 02:10 PM #8
12-31-2009, 03:00 PM #9
Thanks, I'll try a 2PTD with a double hitch or bulky starting knot and finish with the parnell as usual.
Any thoughts about starting crosses from the middle and working outwards?
12-31-2009, 04:24 PM #10
With an extra piece of temporary cross string, start out from the middle or near the bottom and stop just before where the main and cross strings intersect at the top. Clamp both ends with starting clamps. The purpose is to stabilize the shape of the lower part of the frame. And now proceed with stringing from the top. Remove two temporary cross strings at a time as you are working from the top. This method combines the benefit of 2PTD and 2PBU (BU = bottom up). As a result, it is called hybrid 2PTD.
12-31-2009, 04:49 PM #11
12-31-2009, 05:59 PM #12
12-31-2009, 07:45 PM #13
Yeah I kinda figured that I wouldn't need need to try the hybrid, so I'll be going with 2PTD:
Mains @ 25lbs, finishing with Parnell knots
Crosses 1-4 @ 25lbs starting with a bulky or double half hitch
Crosses 5-22 @ 28lbs finishing with a Parnell
Hope this will work out better for me, can't see why it's just these ArcSabre's which are a pain, other rackets have been fine, and 25/28 is not a really high tension to be honest!
Have just strung a Z-Slash with no issue, the grommets are tight, but still easily strung with the BG66 Maxima using the above tensions feels nice, feels around the 26lbs mark - I notice that for some reason, the grommets in the Z-Slash really like to move out after you tension a string, so after most pulls I do, had to check to make sure the grommet was still flush against the frame - anyone else experienced this?
12-31-2009, 08:15 PM #14
The reason why your 25 X 28 string job feels like 26 lbs (assume main = cross) is because of the 28 lbs cross tension. You went above and beyond the normal 10% on the cross . Please enlighten me: what tensioning and mounting system are you using?
The NS series have this problem as well. Just make sure you use your thumb to hold against the grommet when tensioning.
Hope this helps.
12-31-2009, 10:31 PM #15
I don't mind that it feels like 26lbs - that's what I like to play with, I usually like 28lbs, but didn't want to string that high until I can get 25/28 perfect (well... as perfect as I can do at my current level of stringing! )
Here are some pics of my machine:
What I did for the last couple of rackets was:
Using BG66 Maxima
Mains: 25lbs and on the last main, increase the tension to 26lbs to tie the knot
Crosses: 27lbs across all crosses. and increase to 28 for the last cross for the knot.
I read somewhere that someone tried 3lbs more for the crosses so I went ahead and tested it - subtle difference I guess.
Any thoughts / suggestions here as to what tension you would use Pete LSD? (25/27? 25/28?)
12-31-2009, 10:33 PM #16
I believe Pete will go 10% (cross fingers)
12-31-2009, 10:36 PM #17
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