10000匹馬力起步時，輪胎瞬間變形
What 10,000 horsepower does to a top fuel tire at launch.
TOP FUEL ACCELERATION PUT INTO PERSPECTIVE
* One Top Fuel dragster 500 cubic-inch Hemi engine makes more horsepower (10,000 HP) than the first 5 rows at the Daytona 500.
* Under full throttle, a dragster engine consumes 1.2-1.5 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced.
* A stock Dodge Hemi V8 engine cannot produce enough power to merely drive the dragster's supercharger.
* With 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into a near-solid form before ignition. Cylinders run on the verge of hydraulic lock at full throttle.
* At the stoichiometric 1.7:1 air/fuel mixture for nitro methane the flame front temperature measures 7050 degrees F.
* Nitromethane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
* Dual magnetos supply 44 amps to each spark plug.
This is the output of an arc welder in each cylinder.
* Spark plug electrodes are totally consumed during a pass. After 1/2 way, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting the fuel flow.
* If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to blow cylinder heads off the block in pieces or split the block in half.
* Dragsters reach over 300 MPH before you have completed reading this sentence.
* In order to exceed 300 MPH in 4.5 seconds, dragsters must accelerate an average of over 4 G's. In order to reach 200 MPH well before half-track, the launch acce leration approaches 8 G's.
* Top Fuel engines turn approximately 540 revolutions from light to light!
* Including the burnout, the engine must only survive 900 revolutions under load.
* The redline is actually quite high at 9500 RPM.
* THE BOTTOM LINE: Assuming all the equipment is paid off, the crew worked for free, & for once, NOTHING BLOWS UP, each run costs an estimated $1,000 per second.
0 to 100 MPH in .8 seconds (the first 60 feet of the run)
0 to 200 MPH in 2.2 seconds (the first 350 feet of the run)
6 g-forces at the starting line (nothing accelerates faster on land)
6 negative g-forces upon deployment of twin ‘chutes at 300 MPH An NHRA Top Fuel Dragster accelerates quicker than any other land vehicle on earth . . quicker than a jet fighter plane . . . quicker than the space shuttle.
The current Top Fuel dragster elapsed time record is 4.420 seconds for the quarter-mile (2004, Doug Kalitta). The top speed record is 337.58 MPH as measured over the last 66' of the run (2005, Tony Schumacher).
Putting this all into perspective:
You are driving the average $140,000 Lingenfelter twin-turbo powered Corvette Z06. Over a mile up the road, a Top Fuel dragster is staged & ready to launch down a quarter-mile strip as you pass. You have the advantage of a flying start. You run the 'Vette hard up through the gears and blast across the starting line & pass the dragster at an honest 200 MPH. The 'tree' goes green for both of you at that moment.
The dragster launches & starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums & within 3 seconds the dragster catches & passes you.
He beats you to the finish line, a quarter-mile away from where you just passed him. Think about it - from a standing start, the dragster had spotted you 200 MPH & not only caught, but nearly blasted you off the road when he passed you within a mere 1320 foot long race!
That's acceleration!
jet power馬力 在 [分享] JET S騎乘心得分享-20160130 - 看板biker 的推薦與評價
阿罵本來沒打算發這篇，
因小車多大同小異，
三大品牌的小車差距已難分軒輊，
老實說一般人其實感覺不出差異，
但因為摸到一台還不錯騎的車所以有了這篇，
純粹分享~大家開心看，
目的只是分享給想買車的人參考，
這台車就是SYM JET車系的新朋友JET S。
==============================================================================
1.車系基本介紹-我所了解的JET車系背景
如果SYM的老大哥是Fighter，
老二一定非JET車系(JET Power/JET Power EVO/JET S)莫屬了，
同樣採很熱門的雙眼頭燈，
絢麗的儀表資訊幕，
雙避震與印象中SYM最早導入光條式日行燈的車種，
而且有個還蠻好記的名字"捷豹"，
剛好對應JET Power聽一次就記得了~哈哈。
以自己曾經騎過三陽的Fighter 5代以及舊版的JET Power、GT、T1、野狼、金旺...
撇除檔車再以當時的印象來比較他們，
Fighter論車體剛性、馬力、怠速震動、動態穩定、視野等等，
都是最勝的，
Fighter當時給我的感覺大概就是勁戰的穩+彎道情人的馬力，
而JET顯得遜色不少，
印象中那代JET彎道還會有明顯晃動、某個速域會有鳥叫聲，
傾角大但受限於10吋胎還是輸給主流旗艦車款，
車廂有點雞肋(很淺還什麼的)，
車體剛性與配重不佳...雖然靈巧但過彎還是會飄，
動力輕鬆勝GT但還是不及Fighter...等，
事隔多年這次JET S都改善了，
遂有種洗刷罪名的驚豔感。
2.新車的差異
a.輪圈尺寸升級
晉升12吋胎，
前110/70-12、後120/70-12，
後輪略寬雖然起步稍微有點拖，
但換得高速與過彎驅動輪更穩定。
b.動力
跟舊JET比已經明顯提升，
輸出更像Fighter相當線性，
而拿來跟NEX比，
JET的起步更有力(扭力大)，
跑山爬坡更有優勢，
單缸(SOHC)4V的優勢讓他尾速更好，
但電腦應該還是有設定限轉，
因此表速大概卡在110左右。
c.下懸吊改善
這個明顯有感，
參考原廠提到車架有重新設計加強，
過彎果真穩定多了，
而配重可能也有修正，
雖然12吋胎卻還是保持相當靈活。
d.坐墊
座高較以前比更高、支撐性更好，
前後有做高低落差，
表面有做止滑的處理，
質感不錯。
e.儀錶板
一眼看到還以為是汽車的螢幕，
色彩與功能都很豐富，
該有的都有且晚上看特別鮮豔，
只可惜轉速顯示不夠直覺，
刻度每格1K不夠精細，
在白天下轉速五顏六色反而不易一眼看到時下轉速。
f.車廂
原廠說已經提升到32L，
但放兩頂3/4並不容易，
車廂有點偏淺。
g.傾角
這個有感不用說了，
一般道路要卡到很難，
想壓到極限要另請高人XD~
h.外觀
見仁見智，
LED燈具與造型的確有變得更帥氣。
i.懸吊
前避震堪用，
無可避免有一天還是會軟腳，
後避震因已換成改裝品牌故不做評論。
j.其他
大燈夠亮跑山已足夠，
手把握感不錯，
腳踏位置也蠻輕鬆的，
看來是有做人因工程分析。
後照鏡視野很大，
同時也改成可以內收式的像Z1那樣。
3.建議買家可選擇升級
a.制動
原廠前碟配置
如有常載人或跑山前煞單二可選擇升級對四卡鉗，
煞車反應會比較靈敏且夠力。
b.輪胎
原廠胎胎紋...前後看起來差不多
可以選擇升級更好的輪胎，
原廠胎你知道的...(顆顆)。
c.懸吊
增加高速穩定性與面對台灣高級路面的挑戰，
換改裝避震是值得投資的選擇。
4.試駕小心得
騎完個人直覺他的競爭對手應該會是BWS(誰贏誰輸大家心裡有底不用戰)，
在市場上力求更多新穎的變化來迎合年輕族群，
就算沒有頂規旗艦也算時尚華麗，
大家有機會再親自試試看。
另外可以多多鼓勵台廠，
也許還是存在零件耐用度的問題或者些許災情，
但起碼能跟上消費者的需求變化，
這大概是消費者最樂見的吧。
尾巴
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※ 文章網址: https://www.ptt.cc/bbs/biker/M.1454184008.A.E09.html
※ 編輯: whyllas (111.248.207.83), 01/31/2016 04:16:12
補：可參考專業評測https://www.7car.tw/articles/read/22176
※ 編輯: whyllas (111.248.222.167), 01/31/2016 07:20:28
※ 編輯: whyllas (111.248.222.167), 01/31/2016 07:36:48
※ 編輯: whyllas (111.248.222.167), 01/31/2016 07:49:57
※ 編輯: whyllas (111.248.222.167), 01/31/2016 10:35:54
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