String tension loss: Question for Geoff...

[gzhpcu]

Thanks Geoff!

[GeoffWilliams]

Rpm blast feels soft but is listed as stiff. Not a good string for tension loss. The nubs also wear down fast, and so the spin goes. Try T1 firewire instead.

http://www.stringforum.net/strings.p...r=4143&count=1 Tests show that rpm is one of the worst ten/ loss, and T1 is one of the best.

http://www.stringforum.net/strings.php?sdnr=4966&count=1

71% satisfied vs. 100% for T1 fw. That says something.

[gzhpcu]

Geoff, I played with a friend of mine, an ex-ATP pro, who said he uses Babolat RPM when he teaches because it loses very little of the original stringing tension. What do you think? Thanks

[GeoffWilliams]

My string is luxilon alupower rough...

That's what I said it was. Alu power rough. Not good for tension loss. It takes me 1/2 hr. to loosen it.

[hockeyscout]

Unbelievable. Neat.

[gzhpcu]

My string is luxilon alupower rough...

[gzhpcu]

Thanks Geoff.

[GeoffWilliams]

I'd say they would be about 36-38lbs. Time to cut them out. Use that app to test them right after you string them, and then chart how long they take to drop and farther in, when you start to go long and lose feel on shots. A little app notebook in your bag. If you like spin strings, try the tier1 firewire. http://www.tieronesports-usa.com/ten...wire-sets.html I like it with L-tec Os or 4S mains. That apd has a stiffness of about 69; http://www.tennis-warehouse.com/Babo...BAB-APD13.html and an open 16 x 19 pattern. But it increases when strung tight by about 2-3 ra. 55lbs strung would be about a 71 ra.

[gzhpcu]

Thanks Geoff! I am trying out an iPhone app called "RacquetTune" which measures string tension audibly. See here: http://www.appmaker.se/index.php?m=4&s=0

Tried it out on my Babolat Aeropro Drive rackets. Both were strung with 55 lbs. They are now (based on app measurement) about 38 lbs. I hit hard, play three times a week (an hour each time) and strung the rackets about 4 months ago.

[GeoffWilliams]

The curve is worst at first day after stringing and first hitting session and then:


That depends on RA (stiffness and stiffer frames have faster tension loss, as do longer frames), eleongation specs on your string, http://www.protennis.us/US%20Open%20...20Analysis.pdf stringing by pros
soderling metal rod
delpotro frame
feds frame
jokers lead tape

how hard you hit, (harder hitters lose tension very fast) string you are using (gut is best for tension loss, and some copolys are better such as sppp, bhb7, tier1 firewire, humidity, heat, time strings are exposed in the sun, how often you hit, string tension, type of spin you hit, string pattern, lay up of frame. First 24 hrs. after stringing, and first hitting session, will develop the greatest tension loss:ie, gut is best at about 10%, and kevlar is worst at 30%.

[gzhpcu]

Geoff, do you have an approximate curve for tension loss on strings? Say, 55 lbs tension, playing 4 hours a week. I guess initially the first couple of days the biggest loss occurs. But how does it develop over time (after a month or two)? Thanks in advance, Phil

Copoly strings....