A*f 发帖数: 3067 | 1 On last Thursday, I went to play a round at San Ramon muni (local muni
course), ended up finishing 9 holes.
On Sunday, played a full 18 holes at the Bridges, a much harder course with
faster green.
for both rounds, around the green or 80 yards within, i used the new wedge
as much as possible.
for the 9-hole, I finished with +2, 2 bogey, 7 par (5 GIR, 2 save), the 2
bogey are 1 chip + 2 putts when i missed GIR. for the 5 GIR, 2 of them I
used the wedge to get on green.
for the 18-hole, i had my c... 阅读全帖 |
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A*f 发帖数: 3067 | 2 Totally agree, it is just personal preference.
Most of my other friends are gaming Cleveland. It is almost the offical
wedges for the group. Don't know why I dont find it is appealling.
Vokey was my first wedge, i like it right away. The first one was 56 SM.
then I bought another from Vokey, 52. One of my other buddies recommended me
Scratch. then, I bought 58 Scratch, and bend it to 57, trade my 56 SM to "
divot". Hope he still likes it.
Now in my bag, Vokey 52 SM (Spin Milled), Vokey 56 TVD
On... 阅读全帖 |
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c*********r 发帖数: 19468 | 3 我感觉至于ABS的TV要想表现得好,对软件的要求比TVD不会低吧,不过对于重量分布偏
后的跑车来说,TV本身的收益有限,TVD重量很大,所以可能并不值得……BMW只在SUV
上用TVD估计也是这样的考虑
传统上用TVD的也都是头重脚轻的车,包括Audi,所以我同意你的看法,Macan如果用
Audi那个TVD的话估计效果更好。但是貌似Macan的powertrain和Audi分得一清二楚,可
能Porsche不想和Audi在这方面有更多瓜葛吧…… |
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c*********r 发帖数: 19468 | 4 没听说Lexus搞AWS啊……不过之前我也没听说搞TVD,结果RC F就让我吃惊了一把,所
以谁知道呢……
不过RC F的设计,说真的,明显比M3/M4的团队经验差很多,向我前面讲的,很多决策
都是错的
TVD和主动尾翼是最明显的两个,完全不适合这个车……除了marketing角度听上去高大
上……
如果我猜测得不错,Lexus F的团队未必和我观点不同,但是最终Lexus可能是搞市场的
决策方面更有话语权……
当然,如果搞GS F的话,我的建议是机械增压V8,AWD,这时候那个TVD可以用上了,那
个8AT也可以保留
至于主动尾翼,还是不要上,留给下一部超跑好了…… |
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s****r 发帖数: 31686 | 5 编者按:20世纪80年代,西方国家的一些军事研究部门和飞机制造公司曾认真讨论过发展
低空、高机动性“战场飞机”的设想,并设计了多种采用涡桨。
桨扇和涡扇发动机的“战场飞机”方案。近年来,我国的有关专家也提出了类似的装备发
展思路,视角独特。富有新意。这些理念中以夺取低空、超低空制空权为主要使命的“战
场飞机”能否真正填补喷气式攻击机与武装直升机之间的空白,成为空中战场的一支生力
军,能否对现代军事理论、作战思想,空战战术等产生深远的影响,我们还需拭目以待。
一场引人注目的争论
“战场飞机”概念的提出,起因于20世纪80年代初期的一场大辩论。当时,华约在西欧边
境陈兵百万,其机械化兵团规模庞大、技术精良,坦克、自行火炮、装甲输送车的数量都
明显占据优势。在这种情况下,如何对付苏军部署在欧洲前线的坦克集群,制止这股钢铁
巨流的西进,便成为了北约军事部门必须深入研究的问题。在探讨该课题的过程中,专家
们分析了多种方法和手段,如使用喷气式攻击机、重型武装直升机等。然而,由于这些武
器系统的造价高,装备数量有限,其整体作战效能存在很大争议。
于是,有人提出,发展一种可在前线简易机场起降,最大飞行... 阅读全帖 |
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v***s 发帖数: 4031 | 6 38 for 9 holes. That's great. As for the new wedge, you need at least 10
hours practice to get used of it. Take your time. You will get paid back.
Let's go back to your putting. Do you know about your putting style?
straight back and straight forward, or arced?
with
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A*f 发帖数: 3067 | 7 when i started to play, i bought a $2 putter from yard sale, it was a blade
style, so i was more arc-style.
then I switched around few more expensive putters, eventually, i settled
down with the Odyssey Black #9 Tour Design. Now I am gaming it with arc back
, straight forward style, which i was told that is actually Tiger's style.
It worked fairly well on slow green, but I am terrible on judging the green
speed on fast green, almost no distance control on fast green.
for the 18 hole, my chipping... 阅读全帖 |
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v***s 发帖数: 4031 | 8 It’s great if you can chip the ball 10 ft to the cup. I usually mark it as
a good shot. For 8 to 10 feet, you should have 30% of chance to have one
putt in. Even you can’t, next putt should be within 3 feet. I believe the
greens you play are very difficult to putt. I always play at a course I know
, so my putting is getting better and better, which doesn’t mean my putting
is good. One thing I am good at is I rarely miss a putt within 4 feet.
I don’t use a blade putter and my long putt is arced ... 阅读全帖 |
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p****4 发帖数: 517 | 9 I have 54 and 60 Vokey SM which I bought new. Somehow, they do not feel as
good as TaylorMade and Callaway. Now these two Vokeys are on display and I
have TM wedges in my bag.
with
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v***s 发帖数: 4031 | 10 A wedge selection, like a putter, is up to personal preference. I started
with a Cleveland wedge and liked it since the very beginning. I have kept
using Cleveland wedges for most of my games. I also bought TM, Callaway and
Ping wedges and still use Ping Tour-W wedges occasionally. I tried Vokey
wedges about three years ago and couldn't get used to them, but I know they
are good ones. |
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A*f 发帖数: 3067 | 11 just had a chip-in birdie, i think the wedge will stay with me for a quite
while.
too bad, i still end up with 40 putts for the round even i birdie 2 holes. (
39 putts for 16 holes)
with
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ET 发帖数: 10701 | 12 Poor you. How come you can't survive on the easiest part of the game,
especially, the greens at California.
I have some difficult time with Texas green, especially, some courses build
in the hills. Once the greens are punched firmly, the greens of the hill
courses are so much fast and difficult to predict.
But in California, I always say the greens are fairly easy because the huge
temp. difference from morning to noon, from noon to late afternoon. The
grass dew just helps.
Well, actually, I also... 阅读全帖 |
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v***s 发帖数: 4031 | 13 You need to have ten chip-in birdies or eagles to get your money back money
on the investment. LOL.
That's bad having a 40 putts a game.
( |
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A*f 发帖数: 3067 | 14 Finally i had a good round with my Wedge and putter
Although, I did not break 80, but that was the closest I can get at the
claimed highest rating course in north california. (though, i played from
blue tee, 73.4/141), 86 with 5 penalty (2 lost balls, 1 into hazard)
the day before the round, I got a tip from a guy also chip around the green.
He noticed that for short putt, my back stroke is too big. He told me that
since I feel the back swing was big, and I try to compensate, which mess up
the s... 阅读全帖 |
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v***s 发帖数: 4031 | 15 恭喜,在这难的球场打出这成绩。我还没打过这么难的场子,附近只有Trump National
的难度可以与这相比 75.0/146 for black, 72.1/138 for blue.
green.
that
up
crucial |
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l**********e 发帖数: 459 | 16 马上过年来了,想想赶紧给上赛季写个总结。
去年9月30号封杆,一共打了34场,这边大半年是冬天,所以场数才算可以,基本上一
周一场半。
最好成绩91,很遗憾没有破90。2012年还有到80的。主要原因可能在于13年去的场子难
度大了,长度长了。
13年一共拿了9个小鸟。8月份就拿到这个数目,9月份没有进账。有一个老鹰推,错过
了。
相对于12年,进步在于距离见长,敢用开球杆了。主要问题在于不稳定,开球好的时候
,铁杆就不灵。铁杆准的时候,开球就郁闷。这也是为什么破不了90。
漫长冬季在琢磨怎么keep lag. Early release 和chicken wing老是困扰我。
新年展望,破90,拿两位数鸟。
最后贴一下去年的球包,挺喜欢,今年应该还是这样不换了。
Sun Mountain 3.5 2013
Taylormade Suertri 10.5 Tour AD DI 6sr
Nike Vr 3 Wood 14.5 Tour AD DI 7s
Cleveland HT FL wood 17 Miyazaki R
Titleist 910H 21 Kali R
Adams Pro... 阅读全帖 |
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A*f 发帖数: 3067 | 17 我的铁杆也是他家的,MB710,他家TVD WEDGE,SC的PUTTER
虽然成绩跟用什么杆没什么区别,特别是看我的推杆成绩
不过,就从了他家 |
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A*f 发帖数: 3067 | 18 我的铁杆也是他家的,MB710,他家TVD WEDGE,SC的PUTTER
虽然成绩跟用什么杆没什么区别,特别是看我的推杆成绩
不过,就从了他家 |
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M****o 发帖数: 13571 | 21 the vampire diaries... :p |
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M****o 发帖数: 13571 | 23 哈哈,哪儿也都有懒猪MM呀!
BTW你不会在跟踪我吧?@@ 呵呵 |
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c********e 发帖数: 42175 | 24 她暗恋你!!恩。
哈哈,哪儿也都有懒猪MM呀!
BTW你不会在跟踪我吧?@@ 呵呵 |
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c*********r 发帖数: 19468 | 29 不是power-on、power-off的问题……假定一个车保持匀速,入弯后外侧车轮会转得更
快,这个造成差速的扭矩哪来的?并不是引擎提供的。引擎动力无论多大多小都没法提
供这个差速,反过来,即便是从动轮,一样会受到这个差速的扭矩,因为这部分是地面
传给车轮的,和引擎动力无关。Torsen一类的差速器对这个流向的扭矩是和open diff
一样。举个例子,过弯时假如因为重心外移导致外侧车轮附着力是内侧的4倍,而假定
该Torsen最大torque bias ratio也是4,那么此时Torsen会按4:1的比率给外、内侧车
轮分配动力,而这个过程和差速是无关的,对转弯完全没有干涉。如果换成同样torque
bias ratio的clutch type LSD就坏事了……因为这时还超过该LSD的临界点,动力按4
:1的比率分配没错,但是差速扭矩还不足以克服离合的摩擦力,所以这时该差速器实际
上是锁死状态,内侧车轮转速必然大大超过理论上应有的数值,当然,这样会造成内侧
车轮附着力下降,改变前面4:1的附着力比例,最终差速器的临界点可能还是会破的,
但你也看出来了,内侧车轮大比率滑移是难以避... 阅读全帖 |
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c*********r 发帖数: 19468 | 30 借你的图回VCrab:
由于转向时的差速是车轮带动差速器发生的改变,也就是worm gear带到worm wheel,
这是不会有任何问题的。动力还是由worm wheel流向worm gear,在Torsen的torque
bias范畴之内的话就相当于一个硬轴,torque的实际分配是traction决定的。前面的差
动扭矩实际上是叠加在这个驱动扭矩之上的差值,外侧为正,使得外侧车轮转得更快,
内侧为负,使得内侧车轮转得更慢。所以这时即便内外车轮多有足够的附着力,Torsen
也在发挥torque biasing的作用,而且和TVD一样,这时是把torque往外侧车轮转移。
如果是基于clutch的LSD,包括clutch/cone type、粘性、pump type、各种eLSD,这时
离合接合的话只能把扭矩往内侧转移,和我们需要的是反的……离合结合是要倾向于阻
止两侧的差动,所以是有干涉转向的倾向的
无可否则,实际的系统由于内部的摩擦力,Torsen加上load后也会或多或少对转向有所
影响,但这个程度和基于clutch的LSD相比可以忽略不计 |
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c*********r 发帖数: 19468 | 31 我说的就是弯中的稳态,这时Torsen向外侧bias扭矩是一点问题没有的,不同意的话我
也不跟你辩,你给Torsen打电话……
但clutch type这时是不可能向外侧bias扭矩的,工作原理上根本不允许,如果这样也
行的话TVD还加上一堆行星齿轮组来超速外侧车轮那不成了脱裤子放P了? |
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c*********r 发帖数: 19468 | 32 可以,前提是内侧打滑
我前面讨论的是内侧不打滑的情况,这时clutch type如果是工作的就只会添乱……所
以才会费劲研发TVD嘛
而对于Torsen之类的差速器这时是可以平滑的处理的,没有打滑发生也照样能向外侧
bias动力
现在你知道我为什么说Torsen可以不干扰转向的情况下根据traction分配动力了吧? |
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V***b 发帖数: 3419 | 33 你听我继续跟你说啊。你举的那个例子刚好是卡在了Torsen和clutch LSD能控制范围的
边界上,可以说打滑也可以说不打滑,Torsen和clutch LSD二者是一样的。发动机扭力
输出再大一点儿,或者内侧traction在小一点,二者都打滑。
关于你提到的相对转速的事情,对于Torsen来说,转弯的时候,内侧车轮转得比diff
case慢吧,diff case转得比外侧车轮慢吧,按你的理论,扭矩应该是从快的一端往慢
的一端传吧,那外侧拿到的扭矩岂不是更小了?
TVD和我们讨论的内容无关。我们讨论的都是纯机械差速器。Torsen真像你说的那么优
越,X5M和X6还要花大成本上DPC? |
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c*********r 发帖数: 19468 | 34 我理解差了,以为你说STI比上代中差更好……
STI的torque vectoring还是brake-based,实效有待考证,很难说能达到硬件TVD的水准 |
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c*********r 发帖数: 19468 | 35 S4选配了TVD应该还好吧,跟老A4没什么可比性 |
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c*********r 发帖数: 19468 | 36 你把eLSD和TVD搞混了,eLSD没有TV能力,在PTV+上TV也是靠ABS的软件实现 |
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c*********r 发帖数: 19468 | 37 问题是TVD成本、体积、重量都带来不少代价,如果得到的不多就意思不大了
RWD有LSD通常情况下已经应付的很好了,如果加上ABS软件TV,更足够了 |
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