On the main shaft the only things connected to it are the "gears" with the straight teeth that live under the sliders (shift forks) when the transmission is in neutral. The other helical gears on the main shaft and the other "gears" with the straight teeth but pointy ends are all riding on bearings on the main shaft. The gears with straight teeth/pointy ends are the syncronizers (though on this trans they probably don't have the friction interface to actually sync so it's a syncro-less transmission). The syncros are physically connected to their corresponding helical gear (they may even be one piece) and spin at the same speed as the helical gear. All the helical gears+syncros can spin at a different speed than the main shaft because they're on bearings. When you slide the shift fork it then spans the straight cut gears actually connected to the main shaft and one of the syncros, physically tying the mainshaft speed to the syncro speed, which is physically connected to the helical gear, which is in mesh with the cluster gear, which is turned by the motor. Then you have the continuous physical connection from the motor to the output. When you shift to a different gear your first disconnect the main shaft from the syncro, you're back in neutral, and then you connect the main shaft to a different syncro. Depending on which way you move the shifter in the gate you control a different slider, then into gear pushes the slider to bridge the mainshaft with the a syncro. You also can't readily see the extra gear that makes reverse work. It's the only gear where the cluster helical gear doesn't mesh with the mainshaft helical gear, instead a little hidden you can see the reversing gear underneath the cluster.
@@krakenpots5693 Also fun fact. When you're "grinding gears" during a not so good shift, what you're actually grinding on is the teeth (called dogs) of the syncro, not the gears themselves.
@@seijirou302 I would like to thank you also for the knowledge you have passed on, a very understandable summary of what at first sight looks overwhelming
@@amtechprinters3339 I think you'll find that's the ignition, although RPM and speed aren't the same. If we wanted to we could say it's a 5 speed because it has neutral
I had to stare for a while to "get it". I'm new to these mechanisms so apologies for my terminology. For others confused like me, there are only two shafts in the system. The front shaft has gears stuck to it for driving, and the back shaft has loose gears except for the gears in the middle on each side; these 2 gears are directly connected to the output wheel. When the "selector" thingies are in the middle position, those gears can spin freely within them. This is how one can select while the other does nothing. When one of them is off-center, it couples the middle gear to one of its neighbors, which drives the shaft. EDIT: Just saw another comment: the selectors are called "shift forks"
Yes the main idea is that gears are loosely connected with the shaft. They are basically sitting on a bearing and can move at different speed than the shaft does. What selector does it locks the bearing to the shaft making both gear and shaft move at the same speed.
How does the selector thingy actually lock the central fixed gear to the outer gears? Because inside the selector thingy the fixed gear rotates freely when at the central position?
Nice work, but it's a 3-speed gear box with reverse. The number of a car gear box indicates the number of gear shifting (speed change) in forward direction.
Good concept but it look like the reverse is the forward gear and gear 1,2,3 are reverse, due to reverse move clockwise if you look it from the electric motor to the back output shaft and the speed 1,2 and 3 are counter clockwise, but you made an good job!! It might need a extra gear to make the reverse counterclockwise and gear 1,2 and 3 clockwise
Most automotive manuals have the input shaft nested in the output shaft on needle bearings. Countershaft is an idler. This can allow a direct 1:1 with no loaded gears.
There are a few examples with gearboxes but overall it's more trouble than it's worth. I mean you could do it but it just doesn't make practicle sense considering no one even buys manuals anyways.
Uhhhh, when you talk about a "four speed gearbox" that USUALLy means four FORWARD speeds, not 3 plus reverse. OTher than that, fantastic. Best I've seen.
There is little to no innertia in this system, so there's also no need to wait between shifts. If however he put a very heavy flywheel on, there would have to be a delay
There's no load so it is in effect shifting as if the clutch were disengaged. Trivial for the dogs to grab the splines in this condition. Doesn't even appear to have any synchro scheme, tho for the same reason mentioned, doesn't really need those either.
You're in luck. That's exactly what the collars do. All of the gears (except reverse normally, this unit is a little different) remain in mesh with one another, and are bound by the collars/dogs to the shafts when they are selected. The output shaft stops because there's no path between the input and output shafts as you take it out of one gear on the way to placing it in another. This is necessary because two different ratios can't be engaged at the same time (the entire mechanism would lock hard). Normally this position is referred to as "neutral" and is given that name because no matter what is happening at the input shaft, the output shaft is free to turn independently and in either direction (input has neutral effect on output). If there's nothing else turning it, it stops. Both shafts inside a real transmission are spinning whenever the drive wheels are turning (the output shaft is being driven by the car's momentum), but only when a gear is selected will the unit transmit any actual torque. This is where the clutch normally comes in to play... Allows a gear to be selected, the input shaft spools (by way of the synchros) and when the speeds are close, the dogs on the gears can grab the spline in the collar in play, and allow it to go the rest of the way into gear, at which point you engage the clutch and hit the throttle.
It's a three speed transmission, and it doesn't appear as though the operator is aware of the sequence. Just seems to be randomly shoving it into slot.
Could you 3d print the shafts instead of using the brass shafts or would that not work? My logic is that as they really aren't under much stress and they are glued to the 3d printable parts it would work. Thanks!
It's moments like these when I realise that for all my love of mechanics, I still don't understand how gears work!
On the main shaft the only things connected to it are the "gears" with the straight teeth that live under the sliders (shift forks) when the transmission is in neutral. The other helical gears on the main shaft and the other "gears" with the straight teeth but pointy ends are all riding on bearings on the main shaft. The gears with straight teeth/pointy ends are the syncronizers (though on this trans they probably don't have the friction interface to actually sync so it's a syncro-less transmission). The syncros are physically connected to their corresponding helical gear (they may even be one piece) and spin at the same speed as the helical gear. All the helical gears+syncros can spin at a different speed than the main shaft because they're on bearings. When you slide the shift fork it then spans the straight cut gears actually connected to the main shaft and one of the syncros, physically tying the mainshaft speed to the syncro speed, which is physically connected to the helical gear, which is in mesh with the cluster gear, which is turned by the motor. Then you have the continuous physical connection from the motor to the output. When you shift to a different gear your first disconnect the main shaft from the syncro, you're back in neutral, and then you connect the main shaft to a different syncro. Depending on which way you move the shifter in the gate you control a different slider, then into gear pushes the slider to bridge the mainshaft with the a syncro.
You also can't readily see the extra gear that makes reverse work. It's the only gear where the cluster helical gear doesn't mesh with the mainshaft helical gear, instead a little hidden you can see the reversing gear underneath the cluster.
@@seijirou302 thanks for all the time you took to explain this to me! Much appreciated!
@@krakenpots5693 you're welcome!
@@krakenpots5693 Also fun fact. When you're "grinding gears" during a not so good shift, what you're actually grinding on is the teeth (called dogs) of the syncro, not the gears themselves.
@@seijirou302 I would like to thank you also for the knowledge you have passed on, a very understandable summary of what at first sight looks overwhelming
It looks like you have only three forward gears and a reverse gear, unless it's a dogleg reverse then it's only a 3 speed manual + reverse
I was just going to post the same thing.
You don't count reverse as a gear.
This is an example of a 3-speed manual transmission.
Maybe counts that 0rpm speed 😉
@@amtechprinters3339 I think you'll find that's the ignition, although RPM and speed aren't the same. If we wanted to we could say it's a 5 speed because it has neutral
@@amtechprinters3339 ...groan...=D
Which is why 18 speed transmissions naming pisses me off
As kids in the 50s we used to make gearboxes, differentials and Ackerman steering with our Meccano set.
I had to stare for a while to "get it". I'm new to these mechanisms so apologies for my terminology.
For others confused like me, there are only two shafts in the system. The front shaft has gears stuck to it for driving, and the back shaft has loose gears except for the gears in the middle on each side; these 2 gears are directly connected to the output wheel.
When the "selector" thingies are in the middle position, those gears can spin freely within them. This is how one can select while the other does nothing. When one of them is off-center, it couples the middle gear to one of its neighbors, which drives the shaft.
EDIT: Just saw another comment: the selectors are called "shift forks"
"Selector thingies" LMAO 🤣 🤭😄
I would totally pass a final test if u taught engineering in my school lol
Yes the main idea is that gears are loosely connected with the shaft. They are basically sitting on a bearing and can move at different speed than the shaft does. What selector does it locks the bearing to the shaft making both gear and shaft move at the same speed.
How does the selector thingy actually lock the central fixed gear to the outer gears? Because inside the selector thingy the fixed gear rotates freely when at the central position?
@@FoulFiend113 Look up gearbox synchronizers
I love mechanics and just after watching this video , I understand how a gearbox works ! Good stuff man
literally switching gears!
Nice work, but it's a 3-speed gear box with reverse. The number of a car gear box indicates the number of gear shifting (speed change) in forward direction.
Specifically forward but I guess that doesn't matter if nothing is moving anywhere 🤣
That is cool. I wish I had technologies like this when I was younger. I’m at the end of my career as an engineer.
🥲
That rhymed lol
@Aitor Gomila lol
Beautiful! We see the mechanism very well!
YEAH !!!
I finally understand how a gearbox really work !
A most sincerely thanks !
Endlich weiß ich jetzt, wie das funktioniert und wieso die Schaltkulisse ist, wie sie ist. Super Modell zum erklären der Mechanik. TOP!
Adding a clutch should help soften the shifting, otherwise great job mate 👏🏽👏🏽
That has to be the loudest electric motor ever
I take it you've never heard a 11000 rpm fan in a server before
It's just running on too low voltage.
Would have been quieter at full speed with a reduction gearbox.
(and the shock absorber is useless)
I always get lost in which gear is connected to which but overall, nice transmision 😃😆
At first I was like "hold up, that ain't right" and then I saw the little R. Maybe call I a three speed with reverse?
In the future when manual cars are all gone, i am going to need one of these to get me through the day.
You're on drugs if you think manual cars are going anywhere
Brilliant to see how it works. Thanks bro
that is the coolest thing i've ever seen
Good concept but it look like the reverse is the forward gear and gear 1,2,3 are reverse, due to reverse move clockwise if you look it from the electric motor to the back output shaft and the speed 1,2 and 3 are counter clockwise, but you made an good job!! It might need a extra gear to make the reverse counterclockwise and gear 1,2 and 3 clockwise
And i see where it can be fixed, the motor is sending the power to the counter shaft instead of the main shaft, making the inverted gears
Most automotive manuals have the input shaft nested in the output shaft on needle bearings. Countershaft is an idler. This can allow a direct 1:1 with no loaded gears.
It's perfect! Just the right size for my smart car build!
Very nice 3 speed mate.
Very nice build!
Interesting little gizmo
nice work you only count the forward gears though 3 speed with reverse excellent illustration of a gearbox
Excelente amigo parabéns
Thanks for visual practicality 👍
この動画でシフトレバーが何をしているのかがわかりました！😊
これ考えた人ほんと天才だと思うわ
こうやって見せられるとどういう仕組みで動いてるのかはわかるけど自分じゃ思いつかないもん。
Nice ‼️ Go for a 9 speed DCT next ...
Güzel bir çalışma olmuş, tebrik ederim. Ekleyebilirseniz vites değişimlerinde değişen dönme hızınıda gösteren bir mekanizma ekleyebilirsiniz
When the Chief storeman had a thousand numbers in his head !
You should double clutch. Just kidding, you’re floating like a pro.
Nice design! Clean build..
MAGNIFIQUE !
I’d like to see a throttle, clutch and shifting under load demonstration.
Maybe use a variable resistor as the throttle as it can change the speed it would be hard to use a clutch in this
Wheres the synchronizer, it's such a cool part to omit
Pointless complexity for demonstration purposes with no clutch or load to drive.
Most manual transmission output shafts are in-line with the input shafts, no? Unusual that the counter shaft is driven.
That's ok reverse isn't normally on a collared gear either 🤣
Probably for the simplicity of the build. I don't see any synchros either.
По средством копирного и промежуточного валов было бы гораздо проще, меньшее штанг для вилок, а точнее всего одна.
Спасибо!
nice
And this is how E-Mobility can be more emotionall as the 1 Gear Cars!
If you Simulate with a e-engine a gas-engine, you got back emotions
There are a few examples with gearboxes but overall it's more trouble than it's worth. I mean you could do it but it just doesn't make practicle sense considering no one even buys manuals anyways.
This really grinds my gears...
well done - I just had our 6-speed NSG370 rebuilt at 180,000 miles.
180.000 kilometers*
Excellent video brother
Don’t have a clutch. I builded a 5 speed + reverse and it’s awful to use without a clutch, still makes a good desk decoration.
Отличное наглядное пособие 👍👍👍, жаль только что это прошлый век, как когда-то были первые языки программирования, которые оказались не удел сегодня...
Надеюсь, что хотя бы первые щеки или горла программирования сегодня востребованы.
Finally I understood. Thanks a lot!
Very Beautiful!
Friendly reminder: 'go to sleep, you had enough of youtube today'
沒有 synchronizer,
沒有 clutch,
將個 sleeve 直接 塞扣進 波齒輪
示範了一個原始的設計💡。
I have no idea what's going on...
Are gear 3 and 4 rotating in opposite directions or is that a trick of the eye? It's driving me mad
i can smell the motor burning
When the video first started I thought someone was playing a bagpipe. ;)
Uhhhh, when you talk about a "four speed gearbox" that USUALLy means four FORWARD speeds, not 3 plus reverse.
OTher than that, fantastic. Best I've seen.
amazing to watch live gear shifting....
Can you imagine being the engineer who figured this out? They probably got a pizza party from their company!
I’m guessing since there’s no clutch you need to sort of time the transfer between gears?
There is little to no innertia in this system, so there's also no need to wait between shifts. If however he put a very heavy flywheel on, there would have to be a delay
There's no load so it is in effect shifting as if the clutch were disengaged. Trivial for the dogs to grab the splines in this condition. Doesn't even appear to have any synchro scheme, tho for the same reason mentioned, doesn't really need those either.
Genius and excellent work👈👏👏👏👏👏👏👏👏👏👏👍👍👍👍👍👍👍👍
Very good system with gears. Great!
This is so freaking cool!
Amazing model once thought to do something like this made. And you made it. Bravo you
Interesting clutches
준우야 뭐하냐
Bro Full video post kro
This is actually a 3 speed. Reverse gear usually doesn’t count.
Why does the output wheel stop in its tracks when shifting..? seems like you should use some sort of mechanism to lift the gears away from the output
You're in luck. That's exactly what the collars do. All of the gears (except reverse normally, this unit is a little different) remain in mesh with one another, and are bound by the collars/dogs to the shafts when they are selected.
The output shaft stops because there's no path between the input and output shafts as you take it out of one gear on the way to placing it in another. This is necessary because two different ratios can't be engaged at the same time (the entire mechanism would lock hard).
Normally this position is referred to as "neutral" and is given that name because no matter what is happening at the input shaft, the output shaft is free to turn independently and in either direction (input has neutral effect on output). If there's nothing else turning it, it stops.
Both shafts inside a real transmission are spinning whenever the drive wheels are turning (the output shaft is being driven by the car's momentum), but only when a gear is selected will the unit transmit any actual torque. This is where the clutch normally comes in to play... Allows a gear to be selected, the input shaft spools (by way of the synchros) and when the speeds are close, the dogs on the gears can grab the spline in the collar in play, and allow it to go the rest of the way into gear, at which point you engage the clutch and hit the throttle.
One of those silent movies.
It's a three speed transmission, and it doesn't appear as though the operator is aware of the sequence. Just seems to be randomly shoving it into slot.
Crazy someone could build something like this without understanding the basics of even just the terminology 🤣
The good old days !
This is really nice
Oh, you're so clever!
Your mom knows how gears work
No clutch?
Could you 3d print the shafts instead of using the brass shafts or would that not work? My logic is that as they really aren't under much stress and they are glued to the 3d printable parts it would work. Thanks!
Too much deflection, gears won’t mesh.
And it looks like he is using plastic plain bearings unlubed.
Needs a hard shaft for that to work.
Innuendo unentendo....
what type of servo are you using?
Very nice
so does it states that cars can have electric engine instead of electric motor
very good for you teach the gear book 👍
Good video 👍
3-х ступка на кулаке! Вот если бы ещё переключение секвентальное сделал...
Enigma cypherbox
would be cool to see one thats more like a real pratical transmission
Amazing! Good job.
Why am I seeing the third speed gear running in the opposite direction like reverse gear ?!
How can I purchase ?
Awaiting your response
That thing whines more than my wife
You're in a shitty relationship then or your sense of humour is just shit
Cool! But if you added clutch, would be much better to see the process 👍
I don't get how the transfer slide can touch two gears at once, bro
A moment of silence to those who are facinated how gearbox functions but have no idea how it works even after watching this video! 🧘
So cool, nice!
Still I’m not getting this…. Why all the gears rotate ?Only selected gear should rotate 🙄🙄🤔🤔🤔
Nice bro
Супер 💯💥👍👍👍
love it!
Man gear must have pain
Какая то странная коробка скоростей, обычно привод вала и выходной вал находятся на одной оси
Exceuse me, which one is the clutch?
Basit ve anlaşılır
Does this not need a clutch?
This would be great if applied to sim racing h shifter😂 gotta rev match those things
And the rpm of the gear should match the in game car rev
Wow, that’s cool! 🤩
I'm curios where is the clutch works