How a Sequential Manual Transmission (SMT) Works? Explained
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- เผยแพร่เมื่อ 2 ก.ค. 2024
- How Sequential Transmission Works?
A sequential manual transmission is unsynchronized and allows the driver to select either the next gear (e.g. shifting from first gear to second gear) or the previous gear (e.g., shifting from third gear to second gear), operated either via electronic paddle-shifters mounted behind the steering wheel or with a gear lever.
They provide the best of both worlds, smooth automatic operation in normal driving and lightning-fast gear changes while going flat-out. Unlike a dual-clutch, which uses helical-style gears, a sequential one has straight-cut gears, meaning less power loss traveling through the transmission into the axles.
What are the benefits of a sequential transmission?
Unlike a manual transmission, where there is a significant stop in torque transfer, the sequential gearbox does not require you to stop or slow down to change gears. Thus, you are able to increase or decrease your speed without stopping or experiencing a drop in speed.
--- Time Stamp --
00:00 - Intro to SMT
01:36 - How to change gears in SMT?
03:05 - How to Shift gears in SMT?
03:58 - Why do race cars use SMT?
06:03 - How Sequential Works in Bikes?
07:23 - Are Sequential Better than Others?
08:27 - Advantages of SMT
10:05 - Wrap Up
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Great video. But you should've also discussed the negatives of sequentials. Not too friendly fot daily driving, very loud, brutal shifts, very expensive and high maintenance. Also, some seqs still have clutch pedals and even pro drivers use it when downshifting.
or you could use quick shifter or even just drive smoother, no car drives like a F1 car all by itself
Yeah thuds are annoying in sequential and you use quick shifter like in 390 duke for upshift without clutch but downshift is nuts hard in sequential when you shift down or up if speed doesnot matches in downshifting thuds annoying as f and make you think the gearbox is damaged and also its noisy in upshifts in low gears and usually it wears drive terrain
This is what I have expirenced in motorcycle though I don't know about sequential in cars btw
@@heheboyholaamigo8742 you'd feel the same thuds in a car. That's really a trait of sequentials, especially dogboxes. The gears just lock in right away for instant torque transfer unlike helicals which are used for the daily cars that offer smooth transitions. It's also even more noisy in cars.
And damn it's hard to get neutral 😐
The detailed explanation of where first gear is compared to second, very eye opening! And on top of that, I learned that I can go to fourth gear! Mind blown again! And of the millions of videos showing a sequential transmission being driven, you show a dude street racing in the most dangerous and illegal way imaginable. What an amazing and educational video, just WOW!
😂😂😂 I felt like I was watching Nick Jr when talked about gear placement
Most of the video was on following the schematic ontop of the gearknob, not actually about the technicalities of the gearbox.
Wow!Im learning a lot watching your videos.Keep it up!!
Thanks! 😃
Finally we got your video on Sequential Transmission. Thanks ❤️❤️❤️
Really a great video for beginners 😊
Glad you liked it
@@TheEngineersPost I'm asking if sequential transmission in cars have clutch pedal?
@@bushido8077 Sequential gearboxes allow you to manually select gears without a clutch pedal.
@@bushido8077 Yes, some do!
these were all of my questions answered perfectly thank you!!
Whether the gears are straight-cut or helical has nothing to do with the method of engaging gears (dog rings or synchros) and nothing to do with the shift control mechanism (H-pattern or sequential). It is common for the same transmissions which have sequential shifters (mostly motorcycles and racing cars) to have dog rings and to have straight-cut gears, while more common automotive transmissions with H-pattern shifters to have synchronizers and helical gears, but these design features are not dependent on each other.
Now i know what types of transmission used by hign end cars or sports/racing cars. Thank you so much for this video.
Man I wish I had one of those transmissions for my everyday car.
Your not the only one my man.
😂😂😂
Same
sequential manual transmission are very quick on motorcycles even a $5000 motorcycle can outpace $1 million car when it comes to gear change timings😅 Weird comparison I know
@@shree397
Yeah. But hey, at the the same time it's true
great video!
Very impressive
Excellent video
Thank you very much!
can you make fully explain video about hybrid vehicles or automatic transmission gear box
Hi Man,
I,we in india expect this features.sequential gears shifting in a linear motion takes place.you gave excellent explanations.👍
Thats my hand shifting the gears 😮
very good video, it helped me a lot, something was not clear to me, what mechanical differences are there between the sequential box and the manual in h. thank you.
Hey, it will be great to see a video on hybrid engines and torque generation and transmission of ev engines.
Do SMT cars also have a clutch pedal?In my own opinion, the traditional manual transmission is still the king of the jungle.You can shift to any desired gear say from 1 to 4 or from 5 to 2 if needs be.Thanks for your informative video.
SMT allow you to manually select gears without a clutch pedal, the sequential gearbox has all of its gears lined up on one input shaft, and they engage the output shaft using dogs.
Clutch? Yeah every manual trans has it but you only use it all the time you launch or come to stop. But in car usualy they put something like "quick shifter" so it can save the clutch 😅
it can have a clutch, or torque converter, or a centrifugal clutch.
skiping gears isnt that great, maybe 2 to 4 or 3 to 5 but any other combination is pretty much useless
@@omegarugal9283 ive done some 3-6 shifts when going onto a highwaywith a short onramp, or when down shifting i skipp gears a lot. but in my opinion h-pattern is probably easier for on the normal road, having better acces to neutral and being able to skip gears en all.
Do a video on straight pipes and muffler.
I love SMT.
Hi Wewe from UG your vedio and the lessons are so amazing.thumbs up for you, but will you be position to produce a vedio on step by step driving a car with a SMT.
I have a feeling this video is overdramatizing how "confusing" H-pattern stick shift really is 😅
If every gearshift becomes a lottery, you might have to start thinking about the bus instead 🤔
Unless you're fighting to win something, or you live by a rally stage I actually prefer manual stickshift above all!
I love Sequential Transmission More Than Manual.
Same, they're simple, quick, precise, compact and safer to use over traditional manuals, as he said you could destroy the engine if you shift to the wrong gear
Actually Nascar just went to the Sequential Manual Transmission for the Cup Series. They still use the H pattern 4 speed in the Xfinity and Craftsman Truck Series.
NHRA Pro Stock uses a 5 speed Sequential Manual and has for years. I don't know why they haven't replaced the H pattern yet in Nascar. It's way outdated.
Plz make a video on power shuttle transmission
video on SMT vs DCT
Pushing back is going up? I would have thought pushing forward to go to the next gear would have been more intuitive
Pulling is more efficient than pushing a lever.
Very good explanation about the ST. Would like to what are all the Race cars using ST's. Ex: What Ferrari, Lamborgini, Porchse cars are using
I actually like those shoes tropical pattern.
Make a video on anti role bar please.
This video doesn't explain how it works, it explains how to use it.
Very Good video, On next video please get informations about gear box in electric cars
Electric cars are almost always automatic, they don't have a clutch for changing gears, or even a gearbox.
@@TheEngineersPost ok
please do videos on F1 cars and their parts, engines.....TIA
Does SMT have a clutch? And if both cases exists, what is the usual one?
3:41 In a F1 car the right paddle upshifts and the left paddle downshifts
To pull or push a sequential gear stick. There might be a pull handle or push button.
So do these transmissions require the use of a clutch pedal like a manual?
Is this the gearbox used by Dom Toretto?
How is reverse gear engaged? Motorcycles usually don't have one.
Explain about air brakes please.
Hi would u do engine codes like 1NZ and meaning of the code
Completely depends on the manufacturer, for example the 13B could’ve been called the 1.3K and nothing would’ve changed
I driven SMT Interesting.
when explained but does smt have clutch pedal or just like AT given car the manual mode?
Yes they also have a clutch
for changing gears in sequential gearboxes u should push clutch pedal or it doesnt have clutch pedal??
It does but its mainly for when you start driving from a stop. And this is thanks to something that is OFTEN found but not necessary which is the method of gear engagement which is dog teeth engagement compared to mt’s which use synchro rings
But my bike maual says it has helical gears
Then why its not provided in all cars
Why straight cut gear box has a loud sound ?
Helical gears mesh together in small segments at a time while straight-cut teeth are in contact with each other fully and for a longer period of time which makes them to create a hell of a lot of noise. They are not used for regular cars as they are not known for silent operation.
What about reverse, neutral, and the clutch pedal?
What about them?
@@MasterKeyMagic Do they exist in a sequential transmission? When you come to a complete stop what gear are you in? Neutral? First gear with the brake applied? Is there a chance of stalling when leaving from a dead stop?
@@MasterKeyMagic Does sequential trans even use a clutch pedal? or is it automated?
@@marlo209 All of them have a neutral somewhere. Typically between 1st and 2nd gear as on all motorcycles. All manual transmissions, whether sequential or H pattern, have a clutch pedal/lever. You need it at the very least anytime you take off from a stand still. You can use it in any gear but if you rev match or don't care about the longevity of your transmission, you don't have to use it after your tires have momentum.
@@marlo209 Cars with manual sequentials will have a reverse gear somewhere, usually below 1st gear. They do not shift themselves. If you get off the highway in 6th gear and come to a complete stop, and you didnt down shift, you will stall in 6th gear. You do not need to apply the break to operate the shifter in anyway. Its not like an automatic at all. Yes you can absolutely stall if you release the clutch too fast while trying to get moving or by being at too low a gear relative to your speed. Your engine must maintain a certain minimum amount of momentum or else it dies.
In SMT There is a clutch & how it's work
Does sequential transmission require a clutch? What is the bicycle-brake-like thing for under the sequential handle?
Yes. Because there's too much power to not have a clutch.
Clutch is only needed to pull away. The bike brake thing is used to select reverse
Something is wrong.... The first was Automatic transmission, then manual... Kinda sus 😂
Id put a sequential transmission in it. Its very common to see them in drag cars.
No clutch pedal on sequential?
Sequential allow you to manually select gears without a clutch pedal, sequential gearbox has all of its gears lined up on one input shaft, and they engage the output shaft using dogs clutches also known as dog gears.
@@TheEngineersPost thank you very much sir
@@febynemenzo8579 You're welcome
Sequentially shifted manual transmissions have a clutch pedal or if they're on a motorcycle, a clutch lever. All manual transmissions, no matter how they are shifted, have a clutch pedal/lever. If you rev match or have a device that rev matches for you, you only need to use the clutch pedal when you take off or come to a complete stop.
I have SMT on my motorcyle 😊 so that why my CBR can be a race bike
What about short shifting with H patter ?? Say drift, or drag race's
What about it?
@@MasterKeyMagic you not watch the video ??
@@hankyspanky1987 I did. I even made my own video on these. You just didnt ask a complete question. What about short shifting with an H patter? are you asking are they prettier? are you asking if they shift faster? what
@@MasterKeyMagic do you know what short shifting is ??, if you look it up before you reply back, I wouldn't be surprised
@@hankyspanky1987 Yes I know what it it🤦🏼♀️ I literally do it all the time. YOU DIDNT ASK A COMPLETE QUESTION. You basically said "What about the sky? Say, at night or during the day" Theres no question there
@ajith buddy malayalam ano eth?? (Bike)
Is sequential transmission of cars have a clutch pedal?
Also wondering the same thing
Yow that boggles me
Sequentially shifted manual transmissions have a clutch pedal or if they're on a motorcycle, a clutch lever. All manual transmissions, no matter how they are shifted, have a clutch pedal/lever.
@@daniahmed Sequentially shifted manual transmissions have a clutch pedal or if they're on a motorcycle, a clutch lever. All manual transmissions, no matter how they are shifted, have a clutch pedal/lever.
@@darkwatcher01 Sequentially shifted manual transmissions have a clutch pedal or if they're on a motorcycle, a clutch lever. All manual transmissions, no matter how they are shifted, have a clutch pedal/lever.
Does someone know the model of the BMW at 5:30?
I don't know, but despite the section title it's not a racing car.
where is disadvantage of sequential Transmission?
I was today years old when I found out sequential is faster then DC
Does it have clutch
Instead of synchromesh rings, sequential gearboxes have dog clutch. Sequential and dual-clutch gearboxes both allow you to manually select gears without a clutch pedal, but that doesn't mean they're the same.
Embrace the technology, moving forward.
sequentials are old, not a new tech, is more like a come back
@@omegarugal9283 That's what I meant
It is backwards.
I do not like it.
It should be up to upshift and down to downshift.
You completely skipped over reverse with a sequential gearbox
Manual transmisión
This video is great, but doesnt discuss the downsides. Huge maintenance costs on a straight-cut design, loud as hell, virtually unusable on a daily driver, and... let's just call it a 'high strung' driving experience.
All things that are either irrelevant or outright advantages in a race car of any kind, but not so much a road car. Road cars don't come with sequential transmissions for good reason, not just because manufacturers hate fun. Dual clutch transmissions and the best new torque-converter autos offer 90% of the experience with pretty much none of the downsides. And manuals are arguably still the gold standard of driver engagement and enjoyment. I have nothing against sequentials, they are unrivalled in their specific sphere, but they aren't anything like perfect.
After watching this for ten times I still don't understand how it works😡
Man did you no that smt are not effective and not common in use
1:00 "... and high performance racing cars"
pans to a Dodge Challenger which doesn't come in sequential
Rotary transmission
It's easy to use manually, there is no electric board. It won't be bad.
Basically It's manual transmission but for beginners
No, it is for people that wanna be a little faster
Is there actually an engineer anywhere near "The Engineers Post"? The content suggests someone with a very poor mechanical understanding.
If you want a fast explanation that shows you first hand how it works without this stupid ai voice then go to Overdrive UK. Perfect explanation with a fraction of the time.
Wierd translation or robotic commentation...the pronunciation and grammar is off....and its odd in that it explains as if ti layman but supposed to be for engineers....
First
nope