K90, NOT the best for me!

gofederer

Rookie
Possibly for many of you N90 users too. I've tested the K for about 15 doubles sets and 3 singles sets during the last two weeks, and my halfway assessment for it doesn't go that favorably.

Aside from those static factors like the material, string pattern, handle/neck lengths, paintjob and so on, the K has two critical downsides in the most important factor, performance.

Firstly, it seems to have quite a narrow range of playable string tension. At a bit lower tension, it sacrifices too much control while at a bit higher tension, it gets too stiff. This hasn't happened with my other sticks including the 85, Tour 90, N90, N90 Fed Ed. I haven't found or reached the optimum tension for it yet and I'm getting slightly suspicious about whether it has any Eureka point at all.

Secondly, and more importantly, it has quite a small sweet hitting area compared with the N90. Off-center hits give you back an unpleasant, harsh feel, sending weakly propelled balls astray. Only when you hit the ball squarely at the center at an easy waist-high position does the K give you the satisying buttery feel. Down/level swings for shoulder/chest-high balls and steep upward swings for short, low balls with the K produce way more mishits than with the N90 original. I suppose this has something to do with the more evenly spaced strings because somehow this happens more commonly with the 85, the N90 Fed Ed, and the K90, while the N90 original can press rising balls down and sweep falling balls up very easily.

These two 'defects' for ordinary players seem to boil down to one theme: generosity. For more advanced players with constantly accurate fast/long swings and better tecniques they may not be a problem. There could be some 'magic' in the K that only better players can find and enjoy. But at the moment it's not the best choice for me and I'd like to warn my fellow average 4.0~4.5 players to demo the K before the final decision.
 
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Nextman916

Professional
Lead doesn't usually make a sweetspot bigger, it just moves it around.
It does make the sweetspot bigger....if your theory is to say that it moves, what if you placed lead at 3 & 9, where would the sweetspot move? It would get stretched making it larger. Its no myth its the truth.
 

julian

Hall of Fame
What is N90 FED ED?

Possibly for many of you N90 users too. I've tested the K for about 15 doubles sets and 3 singles sets during the last two weeks, and my halfway assessment for it doesn't go that favorably.

Aside from those static factors like the material, string pattern, handle/neck lengths, paintjob and so on, the K has two critical downsides in the most important factor, performance.

Firstly, it seems to have quite a narrow range of playable string tension. At a bit lower tension, it sacrifices too much control while at a bit higher tension, it gets too stiff. This hasn't happened with my other sticks including the 85, Tour 90, N90, N90 Fed Ed. I haven't found or reached the optimum tension for it yet and I'm getting slightly suspicious about whether it has any Eureka point at all.

Secondly, and more importantly, it has quite a small sweet hitting area compared with the N90. Off-center hits give you back an unpleasant, harsh feel, sending weakly propelled balls astray. Only when you hit the ball squarely at the center at an easy waist-high position does the K give you the satisying buttery feel. Down/level swings for shoulder/chest-high balls and steep upward swings for short, low balls with the K produce way more mishits than with the N90 original. I suppose this has something to do with the more evenly spaced strings because somehow this happens more commonly with the 85, the N90 Fed Ed, and the K90, while the N90 original can press rising balls down and sweep falling balls up very easily.

These two 'defects' for ordinary players seem to boil down to one theme: generosity. For more advanced players with constantly accurate fast/long swings and better tecniques they may not be a problem. There could be some 'magic' in the K that only better players can find and enjoy. But at the moment it's not the best choice for me and I'd like to warn my fellow average 4.0~4.5 players to demo the K before the final decision.
What is N90 Fed Ed?
 
D

Deleted member 6835

Guest
What is N90 Fed Ed?
i think he's talking about the special federer edition n6.1 90 that was released in japan and bought by someone on these forums, forget who though.
 

bluescreen

Hall of Fame
its a limited edition racquet that was only released in japan, supposedly using federer's exact specs. one the major differences w/ the fed ed. versus the regular n6.1 tour is the string spacing.

btw, u really dont have to quote that super long post just to ask one question.

damn, tennis nerd beat me to it.
 

gofederer

Rookie
The Ncode Six-One Tour 90 Limited Federer Edition was also released in Korea right before the Federer-Nadal exhibition match in Seoul after Shanghai Masters Cup. I bought one at that time. The K-Factor Six-One Tour 90 was released in Korea on 14 December last year, and I bought two on the very first day, one (4 1/4) for my brother and the other (4 3/8 ) for myself. 1/4 was just about the same size as other Wilson sticks but my 3/8 was definitely 1/2, so I had to reduce it to around my regular 3/8 by shaving (with a pencil knife) and sandpapering the handle foam.

BTW I played with the K90 again yesterday (1-1-2007) and it performed a lot better. Sharp drop of power in off-center area remained but the string tension must have reached just about the optimal point probably due to accumulated stress and untimely warm weather. Dealing with high balls was much easier than before and the unique ‘hitting a tennis ball with a cast iron paddle’-like feedback was there which I experienced with the ProStaff Tour 90. So I’m now relieved to know that I wasn’t just hooked by a marketing gimmick, and the K began to look rather attractive with its own signature.
 
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vkartikv

Hall of Fame
Any frame with very narrow working tension ranges is sure to be a beauty (fischer vt pro 98, fischer vacuum pro 90 and slaz x1)
 
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