The Pros & Cons Of Sequential Gearboxes 

If you've driven the BMW M3 GTR in Need for Speed Most Wanted you would immediately fall in love with the transmission whine

He just had to crush my dreams when he said the cost of the sequential

Sequential = straight to business H pattern = joy of driving

If I had a quid for each time he says "selector" I would be able to afford a car AND install a sequential gearbox

Anyone else absolute love the sound of straight cut gears?

Sequential = Serious driving Manual = Fun

I'm a motorcycle mechanic...... I literally know the inside of these transmissions like the back of my hand.... Why the hell am I here.... Eh whatever still entertaining

How can you not love the sound of straight cut gears?

I've started in motorcycles before driving a manual car so I've always wondered why manual car's don't use a sequential gearbox. Thanks for the explanation!

I love the sound of straight cut gears

I find amazing the sond they do when changing gears! - MP -

They don't necessarily always need to be hydraulic or pneumatic actuators. In this case of a sequential transmission with a manual shift lever, it's usually just a mechanical linkage.

1:52 "The need for a clutch is eliminated [...]" You're leaving out quite a chunk here. Should be either "The need for a clutch is eliminated if you have a quickshifter" or "The need for a clutch is eliminated if you know what you're doing, and even then this can put quite some wear on the poor thing if your timing isnt right". To change a gear, a sequential transmission has to be free of load. Modern cars and many bikes will cut the ignition for a split second which accomplishes that. If not, you have to invert the throttle for a gear change. So if you accelerate and want to shift up, you have to put mild pressure on the gear lever, then close the throttle and open it again very quickly. Or vice versa, for a downshift, give it some throttle for a brief moment. The gear will change "itself" the moment when load is around zero. In this scenario there are soooooo many ways to fuck up. I managed to: - not close the throttle far enough, making me land between gears - not go through the gear change all the way, making me land between gears - not close the throttle far enough, but apply a lot of pressure on the gear lever, which does the gear change, but is audibly BAD for the transmission - do the gear change before I want it, because I go over a hump Not saying, you shouldnt shift clutchless (I do it all the time). Just that your info is too casual.

Car Throttle notifications is what I live for

I recently drove a racecar with a 6 speed dog box and I say that it's the most awesome and connected feeling you get with a car! You feel everything on the gearbox and I didn't do clutchless shifts although I saw the owner do it and was amazed by the low drop in RPM and shift time. If you do it right it's almost like a sequential but with the benefits of having the H pattern

FYI: The reason you don't need a clutch on some sequential upshifts is only down to electronics, i.e ignition/fuel cut (or closing the throttle slightly), and a blipping system on the downshifts. I use the clutch on my bike engined car for downshifts and for 1st to 2nd as you have to cross neutral.

The noise that sequential gear boxes make is amazing

Straight cut gears BMW M3 GT-R NFSMW 2005

Thanks Bart, loved this episode of science garage!

Eyyyyy dedication blog!! Well done chris you made it ;)

I love proper manuals but one of my dream builds is a highish power EVO with a squential

Shifting Pop is amazing

@Car Throttle best channel for engineheads, i love your channel.

Nice to see ChrisCrash here at CarThrottle :D Nice Video!

Thx for translating to u.s currency

awesome vid

I'm glad you decided to do this after the, "Daily Drive A Road Legal Race Car". I honestly didn't realize that a clutch was still involved in a Sequential Gearboxes.

Great video. I sooooo want a sequential gear box for my Type-R now

Sequential gearboxes are goals for speed! That's why I don't understand the manual elitist that talk down about semi-autos or dual clutch transmissions because these days they are getting close to speed with sequential and shift faster than the average manual driver.

Nothing beats a good manual

Great great video and thanx for including the US conversion

The straight cut gears are not just a clunky and noisy hassle, the whole point of helical cut conventional gears is that they have a higher engagement area and wear less when being engaged in and out of shifts. Str8 cut will wear quicker, but hopefully past the life of the vehicle.

that wtf1 clip

Poor Dedication Blog crashing out ha

car enthusiasts don't hate on sequential nor automatic cars. true car enthusiasts might prefer manual gearbox but they will love all kinds of car regardless of what transmission it has. I'm sure car enthusiasts find joy in anything with 4 wheels that drive whether it's fast, slow, queer, low, high doesn't matter as long as it makes you smile.

I like my H pattern, I would probably love a sequential but I can chirp the tires pretty consistently on an upshift which is very satisfying sometimes. and I feel like I shift fast enough. I've driven a DCT and it sure is fun to just put your foot to the floor and go through the gears, but it's electronically controlled. something is missing from the equation. I suppose the traditional sequential is more mechanical so that would be pretty cool. maybe I just like slamming gears and hitting that perfect heel-toe downshift, who knows lol and for those of you wondering, you actually CAN convert your H pattern to a sequential shift pattern by installing a sequential shifter. You'd still have to use the clutch shift but it's a basic "back to go up, forward to go down". probably not as quick, but it IS cheaper than shelling out metric f*cktons of money for a transmission that is going to be driven hard AF

I finally got to know where's the "whine" coming from, thanks. ❤

They showed one of Chris Drifts crashes twice in the video.

love your videos!

i love you car throttle for the video editing part

Can you do a video explaining why we don't use V4s anymore

I don't quite understand how can a sequential gearbox shift without a clutch, and a standard manual can't, while there is no difference only in selecting gears.

This is what I'm planning to have when I'm ready to build my project car. An awd(or rwd) honda civic eg with a pandem kit and a sequential gearbox.

love videos like these!!!!

Going to France is worth for candy up

stick sequential is better than flappy paddle.

I love straight cut gears love the noise and feel the clutchless Jericho gearbox is probably one of the best

Clk Gtr road car came with the same sequential gearbox as the racecar. The clutch wasn't needed to shift but apparently would only last a few hundred miles without it

Dude, you could build a car from just scrap parts if you look back at all you videos Who Agree's

You can skip gears in a sequential box... like from second to fourth... just clutch in, blip the shifter twice and let the clutch out.

Great explanation of how a sequential shifts!👌

That dedication blog clip was savage

Roses are red Violets are blue I am not early And neither are you

Track : sequential, Street: good old stick with a short shift!

I'd say the risk of power gear selection and unexpected over revving is one of the best things about these gear boxes I've seen a lot of people on the truck mess up their cars doing this.

On bikes we always use the clutch to change gears, it’s said that that if we don’t use it parts will wear quicker, tough they gear in without any grind or discomfort if we don’t use it

Pro: LAP TIMEZ BRO! Con: not a manual

#heeltoedownshifting

Just wanted to point out one small inaccuracy: straight-cut gears don't actually have less power loss than helical gears. Both have pretty much negligible power loss, but helical gears are actually just a tiny tiny bit more efficient. However, the reason racecars use straight-cut gears is because helical gears introduce forces in extra directions. Basically they want to push past each other and they want to push each other apart. These extra forces mean the gearbox housing needs to be stronger, which makes it heavier. So the TL;DR is: straight-cut gears are not more efficient, but they allow a lighter transmission housing, so the car can be just a little bit lighter.

Please do a video specifically on straight cut gears.

Pros - pretty much everything Cons - You can't afford it you broke ass

Didn't even know what the video was about, just saw car throttle and pressed play

love the sound of the old school sequentials

Beautifully shown

sequential are expensive? they aren't expensive in motorcycles

ayy lmao

nice information to know

I love the straight cut gear whining sound

Please stop calling it a Miata, it's an MX-5.

Dear youtube recommendations, why.

There is (ideally) no sliding motion, and therefore, frictional losses, between tooth surfaces of gears due to the profile of the teeth. The advantage of spur gears in racing applications is the lack of trust loads (along the axis of rotation of the gear) which would be induced by helical gears. This allows for a lighter gearbox assembly.

I've got one in my E46 330i it's a DSG with paddle shift and sequential manual. Great at high speeds but a pain in the ass while in traffic.

The real question is why would I want a mx5

Video starts at 0:00. Thank me later Read more

i would love the hear that high pitch sound when i blast trough gears! that would make me feel real statisfied

my moms mini cooper s from 2011 has a sequential and an auto built in. it has both paddles and a stick for sequential.

damn, thank you guys for giving us easy diagrams to understand on the gearbox explanation, i finally understand

Looking at the animation for the sequential gear box was the first time that gear selection clicked for me. I never truly understood how the gears engaged to drive power through the shafts.

My 1986 Chevy short bed stepside has a sequential manual shift transmission with near 320-350 horsepower it's a T5 Borg Warner. I got a really good deal on it I bought it for $150

can you stall a sequential gearbox car? do you have to ease off the clutch when leaving in first gear like a manual car or can you just put it in first and drive without using the clutch ? PLEASE RESPOND 🙏🏼

Can I correct this, a sequential gearbox doesn’t have to be clutchless what this guy is describing is a sequential dog box. Drivers often clutch even sequential dog boxes on down shifts to smooth the shift this is sometimes on upshifts too, this is especially the case with larger road car engines that have high rotating mass. Also, although a selector drum shaft is a common way to select the gears it is not a requirement of a sequential gearbox any mechanical/electronic method can be used. A sequential gearbox is simply a gearbox in which gears are selected sequential (in order, one after the other )

Ethan using Beyerdynamic DT770 Pro headphones. Nice choice !

for changing gears in sequential gearboxes u should push clutch pedal or it doesnt have clutch pedal??

We love the sound of a good straight cut sequential. It's like mechanical concert.

That high pitched whine is gloriousness

Just to be clear you need a proper electronic quickshifter to be able to shift without the clutch or it will wear the dogs in the trans such as in most motorcycles that don't come with a quickshifter

(Dumb) question - use the clutch only when selecting the first gear from neutral right? If it's in 1st gear and have to stop, do you use the clutch (like manual) or not?

1:40 my head actually just exploded

Thank you so much ❤️ you just saved me 6k£ for IB5 sequential kit with lsd

nice video

As a motorcyclist, I find the part about the gearbox being difficult at low speeds surprising. Are we sure that isn't about the track orientation of the cars with them or is it because bikes are lighter?

CLUTCH KICK!!!

my z4 e85 has the BMW smg. most people hate it but I think it's pretty unique. to have a Manu gearbox with a sequential. but he is right, low speed town driving does really suck and it clunks and jerks alot.

So how does an automatic transmission with shifting pedals at the steering wheel work? You can use them as sequentials too but does this work the same?

I've driven both manual and sequential gearboxes, and I prefer a traditional manual for normal types of driving (road stuff), as being able to select any gear at any time is very useful in the road, like downshifting from 5th to 3rd to climb a hill. With a sequential box, driving on the road is a pain.

I feel that the last point made is exactly why I enjoy H pattern manuals. I mean, of course sequentials and dual-clutches are faster overall, but driving a traditional manual just feels so good. The engagement that it forces on you makes for a fuller driving experience. It's the same reason I still paint with physical media sometimes, even though I have a computer tablet.

I love you alex for this information

What comes with the gearbox you mentioned though? Is that a full flappy paddle retrofit kit for a Miata or JUST the gearbox? Motorcycle transmissions can't be that much money, that's more than the price of some bikes (although they don't need to take 375hp). There's also economy of scale since sequential gearboxes aren't very common and seem to be made for high end applications only. What's a price comparison of like-to-like transmissions sequential vs h-pattern?

Great mate, this audi s1 is from Bulgaria!

Ideal for drive-throughs