How many rackets can you string with a 200m reel?
If you divide 200 meters by 12 meters, you'll know you will be able to string roughly 17 rackets with a reel.
Fabian's rule of thumb is that you should change your strings as many times in a year as you play in a week. In other words, if you play three times a week, you should have your racket restrung three times a year.
As a general rule you should re-string each year as often as you play per week. If you play twice per week, you should restring your racket twice per year. All strings gradually stretch and lose their resiliency or go dead, even if you play infrequently.
Between 11 and 12 metres of string is needed to string a tennis racket. Sheep intestines are typically less than 8 metres long, so conventionally two strings were needed per racket. Longer cow gut permitted single-string rackets to be produced from natural gut for the first time.
A standard reel that is 660ft should be enough for 16 rackets (40feet x 16 rackets = 640ft). Each set of string is typically around 40ft (give or take 2 feet). THe reels generally will be cheaper to purchase than it would cost to buy the sets individually but in some cases may be the same.
Some basic concepts - a heavy racket is more powerful, more stable and transmits less shock than a lighter racket (all other things being equal). A lighter racket is more maneuverable and thus, a player is able to swing it faster.
Do racquets ever "wear out?" A: Yes, racquet frames do eventually "soften." Over time different stresses add up and eventually break down the fibers and resin that make up your racquet, resulting in a frame that is less stiff than it once was.
Most pro players use some form of a polyester string in their racquet. Either in a full bed or as a hybrid. They hit the ball hard and with a lot of spin and break strings every two hours. Club players might put a poly string in their racquet and the string never breaks.
Unfortunately, there's no perfect formula for determining how long your frame will last. But assuming you don't intentionally splinter it, a new racquet should last at least two years before you have to start worrying about performance-affecting fatigue.
The average cost to restring a tennis racket is $40, but it can range from $15 to $75. Costs are split between labor ($10-25 per racket) and strings ($2-50 per set). Players should string their racket as many times per year as they play per week. Stringers can be found at your local club, sports shops, or online.
How long should poly strings last?
How long do polyester tennis strings last? Many factors can influence how long a polyester string will maintain tension, including the type of polyester. However, it's safe to say that polyester strings will perform well for 10-20 hours of play.
Before you get back on the court, you should replace your strings. If you take your game seriously, restring your racket regularly every 10 to 15 hours of play if you use polyester. You can add a couple more hours if you use nylon or multi-fibre string.

Typical tensions range from around 40-65lbs, but most players' tensions fall well within that range of extremes! Generally speaking, professional stringers tend to advise players to string their rackets as low as possible whilst still being able to maintain control of the ball.
Reel Size 5000
It is commonly used for freshwater salmon when targeting deep and hard-flowing rivers. Big game saltwater tropical species like Mahi Mahi, Giant Trevally, barracuda, and others are also targeted using a 5000 size reel.
The 1000 or 10 size reel is ideal for fishing with 2-to 4-pound test monofilament line. I pair this reel with an ultralight rod measuring either 4 1/2- to 5 1/2- feet long. This is a great combination for trout fishing and small panfish such as bluegill and yellow perch.
1000 to 3000. Small reels are designed to be fished inshore. They can be fished in the fresh or saltwater in rivers, estuaries, creeks, dams, harbors, docks, and jetties. They suit light fishing rods 6 to 9 feet.
A lot of professional players use really heavy racquets with high swing weights, but not all of them. I've seen professional tennis players use really low static weight racquets and still whip up a monster of a tennis ball. It comes down to two things mainly: good technique and racquet head speed.
Higher swingweight is one of the reasons that pros can hit the ball so hard without swinging their racquets at absurdly fast speeds (which, granted, in many instances they do). Skill and training obviously account for a lot, but the additional mass on their frames helps to propel their balls at much higher velocities.
So there are no clear answers to the question: are modern racquets better than old ones? Some are, some are not. There are 20-30-year-old racquets that work well today. And there are modern racquets that play better than most old-school racquets.
Do tennis players reuse their rackets?
Final Thoughts. Professional tennis players change their rackets very frequently. It could be argued that an enormous amount of time and effort is wasted in putting strings into rackets and cutting them out again, but the top players can afford it and the stringers are pleased to have a continuous flow of work.
Most pros bring the six pack bag courtside and have their preferred racket and five others. Maybe a back up or two for of that same racket they are using at the beginning of the match, in case the strings break. They will generally have a racket with tighter and looser strings than their normal racket.
The absolute king of breaking rackets, Marat Safin has broken an estimated +700 rackets throughout his career.
After playing for a few hours, an overgrip may become either worn out or wet (from sweat). Needless to say, a player needs to have a good grip to hit the ball well. So by carrying multiple rackets in their bags, the player can switch out rackets after a grip gets too old or wet.
In a previous post some years go we determined that color had very little affect on string properties and this evaluation shows pretty much the same result in a different format. You can see by this graph there is very little difference between the two Volkl V-Star strings.