Well, can someone tell me why? Other brands such as proace, karakal, ashaway, protech, fleet, apacs does produce.. i think 4u or 5u rackets are good for those who dun have a strong arm and wrist (such as me, using proace ti dream :D)... Then why yonex dun target those market?

ops, sorry, now i noticed yonex did produce 4u racket, at700... but where is 5u... i search nothing.. can someone show me...

Yonex produce lots of 4U rackets.

As for 5U - perhaps they think it's too light. Most people seem to think this, although there is always a niche market for brands like Karakal to use.

yeah but what advantages to you take choosing a 4u racket???? appart of the lightness ??

To my knowledge, the U system is made by yonex. Because 4U in yonex is the lightest does not mean 4U in another brand means it is as light as yonex. In winnex, 4U is heavier than 3U. In yonex, it's vice versa

I think~

As i mentioned just now, i choose the light racket, because i do not i have a strong arm and wrist, and yet iam training for it now. Because of those factors, i cant generate an enough power to hit back even the lbs is the same. I rather to select 5u with a bit of head-heavy as my main racket.

To my knowledge, the U system is made by yonex. Because 4U in yonex is the lightest does not mean 4U in another brand means it is as light as yonex. In winnex, 4U is heavier than 3U. In yonex, it's vice versa

I think~

other manufacturers follow the yonex U system... the higher the U, the lighter it is... case(ses) in point: mmoa, ashaway, rsl, fleet, karakal... etc...

Well, can someone tell me why? Other brands such as proace, karakal, ashaway, protech, fleet, apacs does produce.. i think 4u or 5u rackets are good for those who dun have a strong arm and wrist (such as me, using proace ti dream :D)... Then why yonex dun target those market?Kason has some ultra-light racquet. only 5U (75-79g)

http://www.kason.com.cn/cn/list_cat.asp?cat_id=57

To my knowledge, the U system is made by yonex. Because 4U in yonex is the lightest does not mean 4U in another brand means it is as light as yonex. In winnex, 4U is heavier than 3U. In yonex, it's vice versa

I think~

I think other manufacture also follow yonex standard in U, even though, some of them (i.e. Victor) use W in some region.

However, for G, I agree, that some ones use the opposite scales as Yonex, such as Winex and Yangyang.