i have just inspected 4 MP66. original.
they all seem to share the same 'problem'.

its not really a problem but coming from yonex it is. such poor quality control.

so here it is. the groments holes are not drilled in allignment with one another.
meaning the groments are not in the 'centre' of the frame. if you put your racquet flat down on a table and looked at the groments what you will probably see is groments in the random arrangement like this: up, up, up, down, centre, down, down......

im not to sure how it will affect the racquet performance/durability.
can anyone out there confirm my findings or is this just an isolated case?

thanks

I don't know if its really a defect.

For your information, on my antique silver Cab-9 and gold Cab-9, the holes at the T-joint is 1 up and 1 down.

i have just inspected 4 MP66. original.
they all seem to share the same 'problem'.

its not really a problem but coming from yonex it is. such poor quality control.

so here it is. the groments holes are not drilled in allignment with one another.
meaning the groments are not in the 'centre' of the frame. if you put your racquet flat down on a table and looked at the groments what you will probably see is groments in the random arrangement like this: up, up, up, down, centre, down, down......

im not to sure how it will affect the racquet performance/durability.
can anyone out there confirm my findings or is this just an isolated case?

thanks

pics = thousand words :)

here you go pal.......... ask and you shall receive (even tho it may be 5 months late :D )

so what do you guys think?

jug

hmm, i'll go and check my CD MP66 tonite

hmm, i'll go and check my CD MP66 tonite

i've seen this on all mp66 so far. none on any other yonex racquet. MP44 seems to be free of this 'desease' even to they are 'sister-brother' models from the same 'batch'.

jug

It doesn't matter. My Cab20 CN also share the same 'problem'. Don't worry, it will not affected the structure and durability of your racket.

It doesn't matter. My Cab20 CN also share the same 'problem'. Don't worry, it will not affected the structure and durability of your racket.

i agree. the mp66 is still a great fun racquet to play with. and no suspect of its durability as well :)

its just that its shocking to find such 'irregularities' when it comes to a big brand like yonex. mp66 and cab20 are also not lower end racquets so one would normally expect better from them. :(

jug

nah, that's completely normal. Especially human can not be as precise as machines, so that's OK.

This kind of defect would be less than acceptable for me. I'd send it to Yonex if it really is a manufacturing defect; I haven't seen this kind of defect on other rackets.

I too have seen such "defects" on many models and brands of rackets.
So I believe that it is perfectly normal.

I used to inspect my rackets very closely before and after buying them.
I then realised that the more I inspect my rackets, the more "defects" I can find on them.

For example: cone not aligned with the handle, handle not straight relative to the shaft, butt cap not flat (ie racket can't stand on butt cap), top of head (the dot at 12 o'clock) not aligned with shaft etc etc...

However they never posed any problems to me in terms of playability and durability.
Since then, I never bothered to inspect my rackets so closely.

This kind of defect would be less than acceptable for me. I'd send it to Yonex if it really is a manufacturing defect; I haven't seen this kind of defect on other rackets.

what do you do if all MP66 has this same 'defect'? thus it is not a manufacturing defect but a 'model design defect'? :confused:

jug

are you sure it's a defect? I've done some stringing for people in the past and some of their rackets (i can't remember which models) have similar 'problems'

perhaps this design is means to enhance the racket sweet spot or enable higher stringing tension etc?

are you sure it's a defect? I've done some stringing for people in the past and some of their rackets (i can't remember which models) have similar 'problems'

perhaps this design is means to enhance the racket sweet spot or enable higher stringing tension etc?

trust me......... this isnt a zig-zag racquet frame. its a standard grommet hole 'design'. the holes are as random as 1/72 :D i guess!

just inconsistency in the 'drilling' i suppose. the width > grommet head also doesnt help the technician to be accurate. :(

jug

trust me......... this isnt a zig-zag racquet frame. its a standard grommet hole 'design'. the holes are as random as 1/72 :D i guess!

just inconsistency in the 'drilling' i suppose. the width > grommet head also doesnt help the technician to be accurate. :(

jug

what are the range of the manufactured dates are your mp66 jug8man?

i think i have a theory to explain all this :D

what are the range of the manufactured dates are your mp66 jug8man?

i'll go check. but let me picture it this way:

5 months ago received 4 MP66 all sold and all had same problem.

within the last 5 months sold a received a couple more and sold them. still same problem.

the 2 mp66 that i currently have also have the same problem. these are the ones in the picture above.

jug

5 months ago huh? hmm, u just busted my theory :o

Well, if this is considered as a defect, then guess what, no yonex racket is perfect then. Since all holes are drilled by hands (Yonex workers hold the racket and use machine to drill holes, that's how badminton rackets are made), I don't think there is any racket that has 100% matched holes in a straight line under the machine inspection. Yeah, they may look perfect, but they are not if you look at them with machines.

Not to mention that no rackets has 100% perfect paint, grommets, and frame....etc. At least so far in my life, I have not yet seen any yet. (if you really want to bring up to the extreme quality inspection)

So, I wouldn't worry such a thing, especially I have never seen any racket breakages due to that issue yet.

sides of mp66 frame 080142CD
grommet holes look much straighter than jug8man's (SP) mp66

i disagree. as u can see here your in your picture, the grommets are not 'centre'.
they are 'leaning' more to the right.
while my picture shows a more random pattern.... yours is consistently to the 'right'. both are not centre which can be considered 'defects'??? :confused:

i have said that it is random. what i mean by random also means that no 2 mp66 share the exact same 'pattern'. some were 'random zigzags' like my pic, and i have seen some 'consistently leaning to 1 side' just like your pic.

also, the fact that your racquet is strung creates an optical illusion that it is 'straight'.

my picture is MP66 HK
5 months ago it was MP66 SP
your pic is MP66 CD.

i suppose this shows that all mp66 from various market distribution codes share the same problem. ;)

jug

That picture is taken with the racket at an angle; you can not see the distances on the right because it is covered by the outer area.

i disagree. as u can see here your in your picture, the grommets are not 'centre'.
they are 'leaning' more to the right.
while my picture shows a more random pattern.... yours is consistently to the 'right'. both are not centre which can be considered 'defects'??? :confused:

i have said that it is random. what i mean by random also means that no 2 mp66 share the exact same 'pattern'. some were 'random zigzags' like my pic, and i have seen some 'consistently leaning to 1 side' just like your pic.

also, the fact that your racquet is strung creates an optical illusion that it is 'straight'.

my picture is MP66 HK
5 months ago it was MP66 SP
your pic is MP66 CD.

i suppose this shows that all mp66 from various market distribution codes share the same problem. ;)

jug

That picture is taken with the racket at an angle; you can not see the distances on the right because it is covered by the outer area.

hey, that is not the grand canyon dude. i can still see the 'bottom of the cliff' to make a reasonable judgement.

jug :D

i disagree. as u can see here your in your picture, the grommets are not 'centre'.
they are 'leaning' more to the right.
while my picture shows a more random pattern.... yours is consistently to the 'right'. both are not centre which can be considered 'defects'??? :confused:

i have said that it is random. what i mean by random also means that no 2 mp66 share the exact same 'pattern'. some were 'random zigzags' like my pic, and i have seen some 'consistently leaning to 1 side' just like your pic.

also, the fact that your racquet is strung creates an optical illusion that it is 'straight'.

my picture is MP66 HK
5 months ago it was MP66 SP
your pic is MP66 CD.

i suppose this shows that all mp66 from various market distribution codes share the same problem. ;)

jug
:eek: you guys have eagle eyes. I agree with your and thegr8two comments. That aside, i'm not saying the CD mp66 i got have straight grommets, just saying a bit more straighter than your sample. Having strings going across the grommets doesnt help clarification i agree. Thegr8two, the reason i showed it diagonally was to show the maximum grommet holes across the rectangular picture frame, wasnt trying to deceive you guys. I had also look at the mp66 frame longitudinally but photo wise the focus will be poor.

That picture is taken with the racket at an angle; you can not see the distances on the right because it is covered by the outer area.

yes, i should had taken photo at angles similar to jug8man for comparison.
I was trying to give a better 3D look to the frame instead which it shouldn't the linearity of the grommet holes



http://www.technologystudent.com/designpro/oblique2.htm

as u can see here, the cylinder shape still look very straight when projected obliquely.

There's also one problem with the way jug8man marked the left side..
As the outer frame is higher than the grommets, the part of the markings that included that space between the grommet and the outer frame shouldn't be included, as we can't see that space on the outer frame that is closer to us because it is higher.

We really need a "dead on" view of the racket.

I examined my Ti 10 today (SP code) and the grommets were lined up in the center of the frame(as far as I can tell with the naked eye).

unstring the rackets, remove the grommets and then only take the photos...:p
then stick it in photoshop and make lines of reference to see how it lines up
need high quality photos though :p
probably need a tripod as well :rolleyes:

jug8man, have you notice these hole mis-alignment in other yonex MP rackets, especially models lower than mp66 (like mp 20's and 30's) :confused:

I looked at my mp44 and all the holes line up very straight

Could the MP66 possibly be fake? Does it have the lasered on serial code?

Very hard to see unless if you see it upclose..

to cooler:

i've seen this on all mp66 so far. none on any other yonex racquet. MP44 seems to be free of this 'desease' even tho they are 'sister-brother' models from the same 'batch'.

jug

so far only MP66 (to my knowledge)

jug

Could the MP66 possibly be fake? Does it have the lasered on serial code?

very-very original assure you. serials, the source, and etc.

jug

Could the MP66 possibly be fake? Does it have the lasered on serial code?

very-very original assure you. serials, the source, and etc.

jug