الموضوع: أيهما اسرع الاوتوماتيك ولا المانيوال

من معلوماتي المحدوده في هذا المجال
في نفس العربيه ونفس حجم السي السي وفي الغالب العربيه الاتوماتيك بتكون اكثر وزن من المانيوال
==الاوتوماتيك
اريح كتير فى السواقه وسهل جدا فى السواقه
بيستهلك بنزين اكتر من المانيوال
الفتيس الاوتوماتيك بيتقل وزن العربيه عن المانيوال
==المانيوال
اسرع فى التسارع و الوصول للسرعه القصوى عن الاوتوماتيك
ممتع فى السواقه بتحس فيه بالقياده الرياضيه
تحكم فى سرعه العربيه عن الاتوماتيك

ممكن يكون التسارع المبدئي للمانيوال افضل
بس الاوتوماتيك تلحق المانيوال في النهاية علشان مفيش فقد للزمن اللي يحتاجه سواق المانيوال في الضغط على الدبرياج بالقدم وتحريك عصا الفتيس باليد وما الى ذلك
بالمختصر
الفقد في الطاقة اللي يعملو النقل الهيدروليكي للفتيس الاوتوماتيك يتعوض بالبطء البشري في نقل الغيارات في المانيوال

اما كون سباق السيارات يتم بسيارات مانيوال فاعتقد ان ده له علاقة بقوانين المسابقات نفسها ومش متأكد اذا كان كل سباقات السيارات تشترط المانيوال حتى الان ..

BMW dealers in Europe have received the officially official specs of the new M3 only to discover that the car with be offered with a new seven-speed double-clutch gearbox, much like the DSG trannies used by VW/Audi. Dubbed the M DCT (M Dual Clutch Transmission), the cog swapper is expected to speed up shifts and shave a couple of tenths off the car's 0-60 time, which should put it squarely in the 4.5-second range, if not quicker. The system, developed and produced by Getrag, will likely be better received than BMW's maligned SMG trannies and eventually replace those systems in the 3-Series and 5-Series lineups. The M DCT will be controlled with the requisite paddle shifters on the steering wheel and an odd little joystick control on the center console like the one in the M5 and M6

http://www.autoblog.com/2007/05/31/m3-meet-dsg-bmw-m3-gets-7-speed-double-clutch-box/

The twin-clutch transmission, also known as the Direct Shift Gearbox (DSG) or dual-clutch transmission, is an automated transmission that can change gears faster than any other geared transmission. Twin-clutch transmissions deliver more power and better control than a traditional automatic transmission and faster performance than a manual transmission. Originally marketed by Volkswagen as the DSG and Audi as the S-Tronic, twin-clutch transmissions are now being offered by several automakers, including Nissan, Mitsubishi, BMW and Porsche

DSG and twin-clutch transmissions - What the DSG / twin clutch transmission is - how the DSG /twin clutch transmission works

Driving a car with a twin-clutch/DSG transmission

Twin-clutch equipped cars do not have a clutch pedal; the clutch is engaged and disengaged automatically. Most twin-clutch transmissions use an automatic-style shift selector with a traditional P-R-N-D or P-R-N-D-S (Sport) shift pattern. In Drive or Sport mode, the twin-clutch transmission operates like a regular automatic. In Drive, the transmission shifts to higher gears early in order to minimize engine noise and maximize fuel economy, while Sport mode holds the lower gears longer in order to keep the engine in its powerband. Sport mode also provides more aggressive downshifts with less accelerator pedal pressure, and in some cars, including most DSG-equipped VWs and Audis, engaging Sport mode also causes the car to react more aggressively to the accelerator pedal.
Most twin-clutch transmissions have a manual mode which allows manual shifting via the shift lever or paddles mounted on the steering wheel. When driven in manual mode, the clutch is still operated automatically, but the driver controls which gears are selected and when. The transmission will follow the driver's commands unless the selected gear would over-rev the engine (i.e. commanding first gear while driving 80 MPH).
Advantages of the twin-clutch/DSG transmission

The primary advantage of the twin-clutch/DSG is that it provides the same driving characteristics of a manual transmission (i.e. quicker throttle response and no drop in engine speed when the driver lifts off the accelerator) with the convenience of an automatic. However, the ability to perform near-instantaneous gearshifts gives the twin-clutch advantages over both manuals and SMTs. Volkswagen's DSG takes about 8 milliseconds to upshift. Compare that to the SMT in the Ferrari Enzo, which takes 150 ms to upshift. Instant gear shifts mean faster acceleration: According to Audi, the A3 runs 0-60 in 6.9 seconds with a 6-speed manual and 6.7 seconds with the 6-speed

http://cars.about.com/od/thingsyoune...nic-transmiss/