FGX出左貨未呀?

civicboy 發表於 2011-10-28 15:03

                               
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Ching...你睇清楚先啦...
Automobile Drag coefficient
"Figures given are generally for the basic m ...

Ching , The drag coefficient is a common metric in automotive design pertaining to aerodynamic effects. As aerodynamic drag increases as the square of speed, a low value is preferable to a high one.

A low value is preferable to a high one , cd value 高 , 風阻大

Marco明 發表於 2011-10-28 15:08

                               
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ching好快手~~~
好似唔係原裝鈴喎.......原聞其詳~~~

seems F201 wheels

回復 herbert1 的帖子

係喎....不過無睇埋後面呢...
原來用來計油架....
The drag coefficient is a common metric in automotive design pertaining to aerodynamic effects. As aerodynamic drag increases as the square of speed, a low value is preferable to a high one. As about 60% of the power required to cruise at highway speeds is used to overcome aerodynamic effects, minimizing drag translates directly into improved fuel efficiency.
For the same reason aerodynamics are of increasing concern to truck designers, where greater surface area presents substantial potential savings in fuel costs.

咁HUMMER用油一定用過F1

civicboy 發表於 2011-10-28 12:12

                               
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如果要講車殼下壓力,我相信成套F1車殼(包括前後翼)一定比任何房車, 越野車的下壓力好!
不論搖控車或真車 ...

"但以完全相同動力系統計, 車輕一定比車重有利..."

Sorry CHing I disagree on this...

Just an example with extreme situation, if there are 2 cars using same normal RC 動力系統, one car the total weight is just 1g, the another car is 1300g, which one will have better acceleration and faster speed?

powis 發表於 2011-10-28 15:37

                               
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"但以完全相同動力系統計, 車輕一定比車重有利..."

Sorry CHing I disagree on this...

Can you make a CAR 1 GRAM??
PLEASE!!!

IF in same power, then how can you make a motor low then 1 gram...

herbert1 發表於 2011-10-28 15:11

                               
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Ching , The drag coefficient is a common metric in automotive design pertaining to aerodynamic eff ...

不如你又睇吓呢個....

http://zh.wikipedia.org/wiki/%E9 ... 7.E6.9B.B2.E7.BA.BF

要講真係有排講....

civicboy 發表於 2011-10-28 15:40

                               
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Can you make a CAR 1 GRAM??
PLEASE!!!

thats why i said it is an extreme situation.

What i want to say is, light weight is not the factor always can make the car run faster than heavier because it still depends on the many other factors.

civicboy 發表於 2011-10-28 15:44

                               
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不如你又睇吓呢個....

http://zh.wikipedia.org/wiki/%E9%A2%A8%E9%98%BB#.E9.A3.9B.E8.A1.8C.E ...

講返FGX吧啦~~~

cHRisTiAN 發表於 2011-10-28 14:57

                               
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制作中~~~

ps:開殼柱孔時,最好自己度一次,原裝唔岩位.

請問車頭同車尾有D咩可以set?

civicboy 發表於 2011-10-28 15:44

                               
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不如你又睇吓呢個....

http://zh.wikipedia.org/wiki/%E9%A2%A8%E9%98%BB#.E9.A3.9B.E8.A1.8C.E ...

http://en.wikipedia.org/wiki/Drag_coefficient

Drag coefficient is used to quantify the drag or resistance of an object in a fluid environment such as air or water
佢係用黎量化一件object係fluid environment 下既阻力

lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag
即係話drag coefficient (cd) 細，代表風阻細
"呢個"數字"唔係代表高就=風阻大喎" <----呢個就同你所講既有矛盾

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Marco明 發表於 2011-10-28 15:50

                               
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講返FGX吧啦~~~

我真係好想好想知答案, 好想知真相

herbert1 發表於 2011-10-28 16:11

                               
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我真係好想好想知答案, 好想知真相

好難有定案架喎.........我都係自己試完覺得好跑就夠.....一齊努力啦~~

話時話......幾時會人手FGX先

powis 發表於 2011-10-28 15:45

                               
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thats why i said it is an extreme situation.

What i want to say is, light weight is not the fac ...

又極端....咁車輕唔好囉...
不過你要先做倒一架本極端輕(即係你講的1GRAM)
先再講

如果一SET動力系統係1GRAM以下
而另一SET動力系統係1300GRAMS
已經唔係車重車輕問題....
可為一樣的動力系統呢...
又如何比較兩架車性能

好簡單...就以FGX
一架全完裝(包括螺絲)
同一架全改 炭纖底, 二板, 鈦螺絲 (如果有)
用完全相同呔, 呤, 電, 電變, 控, SERVO....
連揸車果個都要一樣...
(一定要完全相同)
又睇下點....

唔好又講極端....

herbert1 發表於 2011-10-28 16:09

                               
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http://en.wikipedia.org/wiki/Drag_coefficient

Drag coefficient is used to quantify the drag or  ...

你講得好...D例子仲好好....
不如你試下叫人用一套個F1殼
同一套HUMMER殼 比較吓先啦..
(唔用HUMMER 用 BMW, BENZ, 都得架...係殼, 真車呀)

就當現在D真 F1呔係前350MM, 後係400MM闊
請問HUMMER用幾闊呔...
仲有車身高底呢
淨係你講 DRAG COEFFICIENTS
已經F1大啦...仲邊有得同你講
不如你LOAD底架HUMMER, LOAD 到同F1一樣
又换埋F1 D呔, 先講啦
你講緊係成架車, 我一路都係講個殼...

仲有就係DRAG COEFFICIENTS 係用來計乜...
燃料動力銷耗架...

civicboy 發表於 2011-10-28 17:30

                               
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你講得好...D例子仲好好....
不如你試下叫人用一套個F1殼
同一套HUMMER殼 比較吓先啦..

可唔可以答我唔用Cd 咁點比較邊個風阻勁呢???

又係你話F1風阻細，請說明出處

Marco明 發表於 2011-10-28 16:44

                               
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好難有定案架喎.........我都係自己試完覺得好跑就夠.....一齊努力啦~~

話時話......幾時會人手FGX先; ...

要睇下呢架FGX係咪真係咁快先

herbert1 發表於 2011-10-28 17:49

                               
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可唔可以答我唔用Cd 咁點比較邊個風阻勁呢???

又係你話F1風阻細，請說明出處

你未搵人用個真 F1殼同HUMMER個殼比較下囉...
你自己搵到D資料已經答左你啦...

一個四四方方, 一個尖尖長長
你講果個DRAG COEFFIEINTS, 你埋條公式先啦...
http://en.wikipedia.org/wiki/Drag_coefficient
Fd/P V A
V =speed
A = AREA

A --- area 一架 f1 reference area 同 一架HUMMER reference area...
V --- Speed, F1 3XXkm, HUMMER ???

civicboy 發表於 2011-10-28 18:33

                               
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你未搵人用個真 F1殼同HUMMER個殼比較下囉...
你自己搵到D資料已經答左你啦...

cd係around  70km/h去計

其實只睇F1頭尾翼既角度，就知風阻已經係好大!!

civicboy 發表於 2011-10-28 18:33

                               
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你未搵人用個真 F1殼同HUMMER個殼比較下囉...
你自己搵到D資料已經答左你啦...

你控點你架車先再講啦.....

The design is very new. I love it although it may not as easy drive as F103/4.