View Poll Results: do you prefer Isometric or Oval?
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10-09-2008, 12:47 AM #392
The following ar some tips which you may find helpful when choosing racquets.
There are 4 major factors besides material quality that one should consider: balance, weight, head size, and overall length. Any increase will give more power but at the cost of speed. It is therefore up to you or the racquet designer to optimize these 4 factors.
Take the AT-700 which has been well optimized for power and at the same time is not cumbersome. It has a much larger iso head size than the MP99, heavy balance, and a longer shaft for more power, but it does not go for the heavy 2U weight category to avoid slowing down the speed of the racquet. Also very long racquets that go up to the max. 680mm should never be 2U category because its long overall length has plenty of power which can do without any extra weight of 2U.
10-09-2008, 01:09 AM #393
10-09-2008, 08:40 AM #394
iso and oval frame sizes
1) You have found one of a few examples where overall head size for iso is smaller than oval. USUALLY, it is the other way round.
2) Air drag is most dependent on overall surface area more than anything else, then racquet edge tapering then other factors such as shaft length.... and other factors. A stronger person with a faster swing will be able to overcome each of these in negating the effect of air drag, but equally, they will have faster swing with smaller frame size and shaft length.
3) I think that the argument one of the other posters has made about the way a racquet is held and pronating the wrist etc is immaterial because they would do the same with any racquet they played with. Anyway, it's the smash and backhand clear where swing speed is probably more important than in any other shot, where I think an oval head IMHO would nearly always win for any individual if they compared similar racquets and they were used to playing with them.
As far as I am concerened, ISOs are not for me and even if I had a reasonable oval racquet, I would not use my AT700s any more. The reverse may be true for others and I would fully understand that. I really think the ISO users should try ovals before commenting though, as many of the posts suggest they haven't done so, though I understand you may have.
BTW shotting mouths is something I am not familial with, could you explain>>>>
10-09-2008, 08:45 AM #395
Yes, you are right and have a nice weekend!!!
A member post in #313 on page 19.
Claim that ISO always has bigger string bed area. I think in post #391 has just contradict his own statement and verified MP99 (an ISO frame shape) is indeed smaller than Cab30ms (Oval frame shape)
Please be more specific on your assumptions and facts in the future.
10-09-2008, 08:59 AM #396
1) My comment is not directed at you. So, If it sound that way, I am sorry for my tone.
2) Yes, you are almost right on that. in an easy term, air drag is most depend on the overall surface area perpendicular to the direction of the swing. So in essence, the ISO vs Oval frame shape has no effect on the aero dynamic given the overall surface area perpendicular to the direction of the swing is the same. I am trying to point this out to another member, not you. Sorry for my tone again.
3) Yes, you are right. As I posted before, to compare ISO vs Oval, you need to fix all the factors and make sure the only difference is the shape of the frame.
4) Sorry, I don't know why I missed 2 keys to the right... Also, I miss spell a lot some time when I chat while at work... And yet again, the comment is not for you. Sorry...
Ladies and gentlemen, have a nice Thursday, where ever you are.
10-09-2008, 10:39 AM #397
Re racquet speed, the shape of the frame does have an affect. The top of the frame is the farthest point from your racquet hand and has a pronounced effect from any extra weight and its shape at the top of the frame. You will notice that the frame shape at the top is always narrower/slimmer than the bottom. The bottom of the frame is always wider than the top. It cannot be otherwise else we will end up with a ponderous racquet. Making the top a square will be very ponderous compared with its current slimmer shape. Making it slimmer towards an oval shape is less ponderous. Making it an iso shape is somewhere in between. This is because of the sensitive location at the top of the frame.
10-09-2008, 11:16 AM #398
As a matter of fact there is a very simple test to find out racquet speed by a simple strip of lead tape.
Get a strip of lead tape weighing 1.0g, overlay if necessary to reduce the strip to less than 1 inch length, and then cut into two thin strips. Apply the strips at the 12 o'clock on both inner sides of the frame.
Test the playability of the racquet over a few games. Then proceed to the following.
Take out the two strips of lead tape from the top of the frame and cut each into two halves. You now have 4 thin strips of lead tape with each strip weighing 0.25g. Apply two strips at the 2 o'clock and another two strips at the 10 o'clock. Now go for another test on the courts.
You will find a discernable difference between the two tests. One is faster and more focused, the other relatively more ponderous and less focused. Same racquet, same string, same player, same shuttle, same court but with a minor change in placement of the same weight at different loactions.
10-09-2008, 10:58 PM #399
Iso shape racquets have better face stability, especially on off-center hits. The reason is because of the extended "shoulders" at the top, which means a higher twistweight. This is the same twistweight you get when you stick lead tape strips at the 2-3 o'clock and 10-9 o'clock sections of the racquet frame.
AOTBE, the X-section of a frame has by far the greatest impact on racquet speed. This is because the X-section goes through the fastest part of a swing in the direction of the swing. The face of the frame becomes orthogonal to the swing only after full pronation or supination at time of impact, so its effect on speed is not as significant as the X-section.
You may want to compare your ARC 10 with say an AT series racquet of the same weight and you will notice that the ARC 10 is faster, because of its slimmer X-section. Thicker X-section gives more power but is slower.
10-17-2008, 07:21 PM #400
oh no......... the doom is upon us!
Somebody, Holy water! or better yet, vote for ISOMETRIC!
have a nice day
Last edited by jymbalaya; 10-17-2008 at 07:31 PM. Reason: mistyped... again
11-01-2008, 04:55 PM #401
Oval vs Iso
I prefer oval the overall feel is better than iso
11-06-2008, 11:36 PM #402
Bigger head means bigger chance to defense against smashing barrage xD...
Better sweet spot xD:
Bigger sweet spot means higher accuracy...
But I should say Oval head does better in helping training progress and help improve technique since it's harder to use . Sometime I used them too, but when it comes to serious fight I need my iso xD...
11-08-2008, 08:53 AM #403
I played with a friend's oval racket the other day, it felt surprisingly good. No-where near as powerful as my Arc10 with lead tape but the control was superb. My smash is my biggest weapon so I won't be changing to oval in a hurry but for control, oval head rackets seem to have an advantage.
11-15-2008, 01:57 PM #404
ISO better much bigger sweet spot
12-02-2008, 08:07 PM #405
player said that oval head shape racquets have smaller sweetspot so my question is, playing a iso racquet(example yonex mp 100) which have smaller sweetspot is it the same as playing a oval shape racquet
12-02-2008, 08:44 PM #406
Personally, I like the Prince Y-Joint rackets, which I guess are a variant of isometric?
From a physics standpoint I would think perhaps oval heads might incur *marginally* less drag, but not enough to notice, and I could be totally wrong.
My logic: Drag is proportional to the square of velocity. The top of the racket has the highest velocity, and that's where an iso is wider than an oval.
12-02-2008, 10:04 PM #407
12-03-2008, 05:04 AM #408
i just wan to know is playing yonex muscle power 100 the same as playing other oval racquet.
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