w*******y
发帖数: 60932 | 1 Snap-on Industrial Brand CDI Torque 2503CF3HA Drive High Accuracy Computorq
3 Electronic Torque Wrench, 1/2-Inch
by Snap-On
List Price: $911.85
Price: $93.71
You Save: $818.14 (90%)
Technical Details
High accuracy model
25 to 250 foot pounds
Displays real time torque values in any of four torque units
15 degree flex ratcheting head
Ergonomically designed molded non slip rubber grip
Link:
http://www.amazon.com/Snap--Industrial-2503CF3HA-Computorq-Elec
I found the s... 阅读全帖 |
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t*********r
发帖数: 2558 | 2 Quoting Thomas Barber
“First of all, from a driver's perspective, torque, to use the vernacular,
RULES :-). Any given car, in any given gear, will accelerate at a rate that
*exactly* matches its torque curve … Torque is the only thing that a
driver feels, and horsepower is just sort of an esoteric measurement in that
context. 300 foot pounds of torque will accelerate you just as hard at 2000
rpm as it would … at 4000 rpm in the same gear, yet … the horsepower
would be *double* at 4000 rpm. Ther... 阅读全帖 |
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i****x
发帖数: 17565 | 3 对于理科生来说这篇文章讲的是加速感觉符合torque曲线的变化而不是马力曲线的变化。
Any given car, in any given gear, will accelerate at a rate that
*exactly* matches its torque curve
300 foot pounds of torque will accelerate you just as hard at 2000
rpm as it would … at 4000 rpm in the same gear, yet … the horsepower
would be *double* at 4000 rpm
不过文科生可能会把这篇文章理解为A车的引擎torque比B车大一倍，加速度就会比B车
快一倍。文科生不知道引擎torque不直接驱动车加速，而是要通过变速箱按比例缩小，
这个比例会完全改变结果。
这篇文章的价值在于跟NA相比，torque平坦的turbo车加速很猛，无论是汽油还是柴油
turbo。 |
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S*******n
发帖数: 10009 | 4 踩到5000转打滑了吧
反观这些车的Torque更靠谱.
Tiguan 2.0,
Horsepower: 200 @ 5100-6000
Torque: 207 @ 1700-5000 2.0L/121
Outlander XLS 4WD
Horsepower: 230 @ 6250
Torque: 215 @ 3750 3.0L/183
BMW X3 AWD
Horsepower: 300 @ 5800
Torque: 300 @ 1200
GLK350 4MATIC
Horsepower: 302 @ 6500
Torque: 273 @ 3500 3.5 L/213
2014 Ford Edge 4dr SEL AWD
Horsepower: 285 @ 6500
Torque: 253 @ 4000 3.5 L/213 |
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c*******9
发帖数: 1183 | 6 你这段quote得不完整，有点misleading
原文是这样的：
Any given car, in any given gear, will accelerate at a rate that *exactly*
matches its torque curve (allowing for increased air and rolling resistance
as speeds climb). Another way of saying this is that a car will accelerate
hardest at its torque peak in any given gear, and will not accelerate as
hard below that peak, or above it. Torque is the only thing that a driver
feels, and horsepower is just sort of an esoteric measurement in that
context. 300 foot pound... 阅读全帖 |
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w*********r
发帖数: 42116 | 7 有right-hand thread和left-hand thread的螺栓，螺母，不是用来松螺栓的。
torque wrench紧螺栓，到了torque就停了，不会损害wrench。如果用来送螺栓，都是
从大torque开始，而且你不知道torque是多大，会损害torque wrench的精度。 |
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w*********r
发帖数: 42116 | 8 有right-hand thread和left-hand thread的螺栓，螺母，不是用来松螺栓的。
torque wrench紧螺栓，到了torque就停了，不会损害wrench。如果用来送螺栓，都是
从大torque开始，而且你不知道torque是多大，会损害torque wrench的精度。 |
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s*******e
发帖数: 3042 | 9 torque wrench很难正确地用在spark plug上, 因为head是铝的，spark plug是钢的，
没有经验的话，很难找到正确的torque, 如果在thread上抹了anti-seize，那torque读
数就根本没有意义了。有的车，会让你拧到接触之后，再拧180度。我一般是用8寸左右
的小rachet，拧到比较solid的接触就停了（就是用蛮力还能拧动，但是悠着点拧不动
的状态，不太好形容，就算用70%的力量吧)
其实除了head bolts之外，我觉得修旧车用torque wrench用处真的不大，一方面车本
身的tolerance很高，另一方面旧的螺丝螺钉上面的锈，油什么的，能造成很大的读数
误差，如果坚持依赖torque wrench的读数，结果可能还不如用common sense。我自己
修车一般都是凭感觉，分四档：第一档，as tight as possible, 各种suspension大螺
丝；第二档，very tight: wheel lug, 其他的大螺丝；第三档，比较紧，各种中型螺
丝，比如固定pulley的；第四档，不太受力的各种小螺丝。基本上... 阅读全帖 |
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S******y
发帖数: 39 | 10 It's not rare to see such lines from the automotive press:
"I'd trade 10 hp for 5 lb-ft of torque any time of the
day.". I know what they are trying to say, but in my
opinion such lines are misleading to say the least.
As I understand it (and it makes sense dimension
wise), power = torque * rpm * C, so these two are closely
correlated mathematically, a perfect flat(constant)
torque curve gives a perfect linear power curve.
Phrases such as "low end torque" and "high end horsepower"
seem to sugges |
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y*****i
发帖数: 141 | 11 第一次自己动手，之前无任何经验和相关知识，见笑了。
昨天自己换的火花塞，当时没多想，拆旧火花塞的时候觉得torque的非常紧，所以上新
火花塞的时候也
就torque到扳手拧不动了。但是今天看到NGK网站上写着不能torque的太紧，太紧或太
松都不好，早
晚导致引擎出问题。
请教一下各位这个到底应该torque到什么程度呢？
昨天换完之后车子跑了两圈没任何明显的问题。我会再观察看看。 |
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G***G
发帖数: 16778 | 12 thank you. you have your own air compressor.
How many torque wrench do you own?
in the market, there are three sizes of them, 6 inch, 14 inch, 20 inch.
the longer, the bigger the maximum of torque.
do we need to buy all of them?
If we just buy one, for example, 20 inch long torque wrench,
we cannot use it for brake job because of its long handle.
what is the most economical way to buy a tool which can adjust torque?
the |
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s*******t
发帖数: 2896 | 13 轮胎用十字扳手，用力正，双手容易控制，从来不用torque wrench。
多数零件的torque是10-70ftlb,需要torque wrench。比如+-3%的要求，torque越低
，绝对误差越小。 |
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g********b
发帖数: 8461 | 14 一般30 lb*ft以下的torque都是靠手感觉就行了，不需要torque wrench。这么小的
torque用torque wrench的都是些吹毛求疵的人。 |
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g***n
发帖数: 14250 | 15 不能，torque wrench 的 torque 测量是在socket 套头那里的，用铁管当 extension
没差别。
除非你用小齿轮驱动大齿轮，小齿轮跟 torque wrench 共轴联动，大齿轮跟螺
丝共轴联动。有这功夫再买个大量程的torque wrench 那不是分分钟的事。 |
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w***3
发帖数: 938 | 16 本砖家说说，你个torque wrench加什么力臂啊，再加个extension bar，那torque
wrench给你的结果也不会变大，只不过力臂长了，你用的力量小点，就达到设定的
torque了。
BTW:再买一个大点的torque wrench吧，或者听节力学课有助于打消你这个念头。 |
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b*****e
发帖数: 5133 | 17 换轮胎也要torque wrench，爆胎了不就路边自己估摸着拧紧就行了。
有就用，没就不要拧的过份紧就是了。不打仗不跑路的，归零偏了，镜架松了重新再来
总比拧坏导轨或镜架要好。
还有就是比较廉价的torque wrench不一定准，一般的torque wrench也就在一定范围内
比较准，要精益求精还要先校正好自己的torque wrench。 |
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s*******e
发帖数: 1298 | 18 100%扭矩传到任意车轮？另外官网上说没有power loss
Over to the chief engineer to explain the torque vectoring available on the
new Giulia. ‘You have a differential, two clutches, there’s always torque
coming, even if you’re not on the throttle. Thanks to the torque vectoring,
this torque can be split front and rear, left and right. It can create
whatever you want: to start stable, have oversteer, then stable, understeer,
you can do what you want because this clutch is very fast, the control is
very fast… Today the... 阅读全帖 |
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G***G
发帖数: 16778 | 19 I have tons of questions about which kind of tools is necessary to buy.
1) breaker bar
2) torque wrench
accurately speaking, when you remove a tire, you must install it within
required torque. so that you must use a torque wrench.
but how many of you used it in reality?
I never saw a mechanic in tire store using it. instead they
used air impact wrench to do all the jobs about tire. |
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l******a
发帖数: 10467 | 20 my snap on torque wrench need to send back to snap on or cdi, 35$ for each
my 1/2 digital torque wrench is 60$ each time, they mainly used on our
heidelberg press which need accurate torque |
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m******n
发帖数: 6327 | 21 ☆─────────────────────────────────────☆
youhao (maker-Leaving-88) 于 (Fri Feb 18 14:33:33 2011, 美东) 提到:
我下的时候发现就那个螺栓就在一大铁疙瘩，下的时候费老劲了。就没用torque
wrench。上的时候就稍微紧了一下，不过肯定比29lb大，不会超过100lb。
☆─────────────────────────────────────☆
shallpion (123) 于 (Fri Feb 18 14:35:36 2011, 美东) 提到:
反正我从来没看到修车铺的老墨用torque
☆─────────────────────────────────────☆
shouji (apocalypsetank) 于 (Fri Feb 18 16:16:53 2011, 美东) 提到:
那东西不需要太大力矩，我可有教训，把它拧坏了。
就稍紧一下，开一小段如果发现漏了再紧点就成。
☆─────────────────────────────────────... 阅读全帖 |
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i**e
发帖数: 6810 | 22 GLK diesel的情况，low HP, high torque，是否意味着
高转速torque下降很多？基本上torque还表现在低速，也许加速快，
告诉超速吃力 |
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O*********h
发帖数: 4674 | 23 轮子我刚rotate, 用的就是指针式的torque wrench
这个其实不一定需要torque wrench, 一般最多85lbft，就是一个人的重量在rachet上
一般就o了
我朋友说他一般都懒得用torque wrench |
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R****s
发帖数: 635 | 24 车漏机油，需要换Valve cover gasket。
东西基本都齐了，就差一把 light-duty torque Wrench，
用来最后上紧valve cover上的螺丝用的。
valve cover是铝的，很软，
上太紧了怕把铝壳子拧坏，上不紧又担心漏油。
修车手册上给的torque spec是LBS-INCH，是个很小的单位。
需要那种小号的torque wrench。
网上看了看，好像都要上百。
就用一次，买了再退太伤RP了。
不知道哪里能借到或者租到这种工具。
谢谢。 |
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k*********s
发帖数: 4474 | 25 Just set up OBD reader in my car recently. The "Torque" app enables a lot of
functions:
1. Engine variables including RMP, Torque, Speed, Accelaration, 0-60 and 60-
0...
2. Battery Volt, coolant temperature....
3. GPS
4. Most importantly , OBD fault code.
5. Nice UI design
Never pay $199 for a OBD code reader.
OBD II bluetooth $17 on Amazon
Torque app $5.99 on Android store. |
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k*********s
发帖数: 4474 | 26 Just set up OBD reader in my car recently. The "Torque" app enables a lot of
functions:
1. Engine variables including RMP, Torque, Speed, Accelaration, 0-60 and 60-
0...
2. Battery Volt, coolant temperature....
3. GPS
4. Most importantly , OBD fault code.
5. Nice UI design
Never pay $199 for a OBD code reader.
OBD II bluetooth $17 on Amazon
Torque app $5.99 on Android store. |
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f****t
发帖数: 15913 | 27 The RDX all-wheel drive system is designed to help maximize the use of
available traction in both dry and slippery conditions, while minimizing
system-wide friction and power loss to help optimize fuel efficiency.
In normal cruising, the system operates as an efficient FWD vehicle with
100% of engine torque being directed to the front wheels.
During moderate acceleration or when front wheel slip is detected in dry
conditions, 25% of engine torque is transferred to the rear wheels.
On... 阅读全帖 |
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e******g
发帖数: 5344 | 28 前段时间去dealer rotate完轮胎后，第二天早上出门出门刚上高速方向盘抖，我想尼
玛才一年的车，不是就有问题了吧。过了一天去dealer查了一下，说啥毛病没有，然后
高速抖得更厉害了，不过开个几迈车热了就不抖了。
非常不爽，就自己检查了下，rotor啥的都还是新的一样，试着把lug nut拧开一下，结
果死活搞不开，用了压箱底的impact gun一下干开了。然后用torque wrench拧到89（
subaru貌似都是89），出门上高速再也不抖了。开了几天后又重新拧松（这回很轻松了
）然后拧到89.几周下来无事。
估计之前dealer给我拧过了。而且每个lug nut的torque不均匀导致的。
破dealer曝光一下，是Chaplin's Bellevue Subaru, torque wrench我用的craftsman
的，前年黑五sears买的五折货，原价80，买来40，手感还不错。还有拧lug nut一定要
等wheel冷却下来再干活，热胀冷缩。。 |
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d*b
发帖数: 21830 | 29 你这是solenoid，不是torque converter, 那玩意是控制torque converter上挂钩的，
你买个torque converter干什么？
修这玩意估计没多少钱吧
rpm |
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G***G
发帖数: 16778 | 30 请问板上有人用过torque limiter吗？就是加到air impact wrench上
能把力矩降到lug nut的80 ft lb，这样就可以直接用air impact wrench
而不需要再手动用torque wrench校正了。
请问有人用过吗？性能怎么样？另外，精准性怎么样？ |
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w******x
发帖数: 4396 | 31 on a bike the torque is generally low and there's little need for ratcheting
, so if you really want one, the recommendation is a 3/8" drive beam-style
torque wrench. the torque range is on the order of 50 inch-lbs to roughly
500 inch-lbs. a set of hex bits.
so for example, a cheap set would be sears items 00944690000 and 00910058000
.
can
have |
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L*****g
发帖数: 311 | 33 最近在看一些auto transmission的东西，总觉得这个torque converter似乎效率不高
啊，有大牛普及一下一般AT的Torque Converter在非lock-up状态时，一般power loss
有多少么？在drive by wire的今天，有auto transmission(DCT不算)废掉torque
converter, 直接用个什么电控的clutch么？ |
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V***b
发帖数: 3419 | 34 不管是torque converter还是multi-plate clutch，和效率没多大关系吧。
torque converter --> smooth
multi-plate clutch --> instantaneous
7G-Tronic由torque converter改成computer-actuated multi-plate wet clutch就是
因为后者的技术水平已经可以同时得到smoothness和instantaneousness |
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c*********r
发帖数: 19468 | 36 这是硬件torque vectoring，如果你指的是电控，现实的torque vectoring系统都是电
控的
torque vectoring的好处主要是能提高弯道性能，尤其对本身understeer比较明显的车
，弯道性能能提高10%以上 |
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s*******t
发帖数: 2896 | 37 请问汽车上torque>80的螺丝有哪些？
想买一个3/8 drive 5-80 ft*lb的，不知道会不会经常不够用。我的车轮子是80-105
ft*lb，用torque
wrench之后再用lug wrench 稍微紧一下行不行。 |
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m*****a
发帖数: 365 | 38
嗯 我觉得也是。楼主你确定买的是torque wrench吗？
youtube上有使用torque wrench的视频，不妨去看看 |
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i******d
发帖数: 449 | 39 I use the torque wrench several times.
I broke some stubs without it, like on the wheel and the engine cover.
I think the air impact wrench also has the torque settings. |
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G***G
发帖数: 16778 | 40 but you just said, 'socket can control torque spec'.
what you said now implies that socket and impact wrench cannot adjust
torque at all. |
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f*****e
发帖数: 210 | 41 Between the impact wrench and the socket, a set of "flexible" extension
links can be installed. The harder ones give more torque, while the softer
ones generates less torque at the end of the tightening process.
The links are colored to identify. If I remember correctly, the 100lb/ft one
for tire installation is pink/ purple. |
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f*****e
发帖数: 210 | 42 Between the impact wrench and the socket, a set of "flexible" extension
links can be installed. The harder ones give more torque, while the softer
ones generates less torque at the end of the tightening process.
The links are colored to identify. If I remember correctly, the 100lb/ft one
for tire installation is pink/ purple. |
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k***x
发帖数: 6799 | 43 【 以下文字转载自 Auto_Fans 俱乐部 】
发信人: kqxqx (陕东道大行台尚书令), 信区: Auto_Fans
标 题: 【弱问题】和torque wrench配套用的socket叫啥？
发信站: BBS 未名空间站 (Mon Jun 20 21:02:07 2011, 美东)
前阵蛋疼，到HF买了个1/4"-drive的torque wrench（因为这是最便宜的），到现在都
没有打开过，今天看了一下manual，好像得有个extension socket之类的才能用来弄轮
胎，请问这个咚咚叫啥？最好给个链接……谢谢！ |
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X******0
发帖数: 181 | 44 实在不想动弹，但是head gasket和valve cover gasket实在漏得厉害，有点看不过去
了，拖了很久了，打算自己换下，貌似难度挺大，中间需要torque，所以请推荐个价格
适中用起来顺手，比较靠谱的torque wrench！ |
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C**********r
发帖数: 414 | 45 新手弱问HorsePower, Torque以及Weight对于车性能的影响。我现在的认识是
HorsePower/Weight影响的是车的加速度，就像a=F/m一样。不知道对不对。那Torque又
是干什么的呢？谢谢！ |
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y****3
发帖数: 778 | 46 u r completely lost, a=F/m F=Force=Torque*arm/transmission ratio
horsepower=k*torque*rev k is a constant.
now u tell me which one is important. |
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g**4
发帖数: 863 | 47 98年的accord lx
换一个torque convertor要多少钱呢？
craigslist上的
-------------
-131k original miles
-automatic transmission
-clean title
-passed smog 2 weeks ago(certificate in hand)
-registration till 2012
-power windows doorlocks
-AC/Heater
-good tires and good working brakes
not so good:
-mechanic said it will need the torque convertor replace in the furture
-minor dents on the driver door
i brought the car for $3800 2 months ago now selling it for $2600 priced to
sell quick low ballers stay away
-------... 阅读全帖 |
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k***x
发帖数: 6799 | 48 没有必要，即使你去店里装轮胎的话，很多马虎的小二也就是给你用impact wrench直
接上的；所以直接用手拧到最紧就可以了，然后把备胎换掉的时候再用torque wrench
当然了，实在是技术青年的话，可以去harbor freight买个便宜点的torque wrench放
在trunk里面 |
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i**e
发帖数: 6810 | 49 主要因为2013 GLK350有302HP，但柴油版GLK 250 BlueTEC
只有190 horsepower，369 lb-ft of torque。不知道HP
和torque都在什么时候起作用 |
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g*q
发帖数: 26623 | 50 HP是决定汽车动力的根本
torque扭矩是发动机的牵引力,但是要通过transmission才能转化为汽车的牵引力.以现
在的变速器技术,torque已经不是决定性因素.
当然现在的汽车HP都过剩,190hp足够用的了. |
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