Yeah, same happen to me. I watch so many videos and none was detailed enough to really understand how everything works. Was only after I finish the animation that I trully understood. Is nice to see that i helped. Cheers.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
Thanks for this explanation. I do think that it's not the planetary gearing that is difficult to understand but how hydraulic pressure is used to control the clutches and how this interacts with the planetary gear system. The structure of the clutch packs is also complex and worthy of a model.
This is one of the best most simplified animations on TH-cam!! You deserve more views! Still very very challenging to understand as you have to imagine multiple things working all together in a 3D multi-layed synergy. Its fascinating.
Brillian explanation for the inner working of a transmition,what a tutorial, master teacher, many people who repair a transmition are barely part changers, only a few know how is working and how the ratios are obtained.
Best animation and illustration seen till now for explaining automatic transmission. You know, it will be even better if you show the same animation while taking a quarter section to show the ring gear movement before showing each section alone. It will make it more understandable. Appreciate your great effort in this video. 👏
Thank you, very well presented. Ever since I had to have my auto transmission rebuilt I've been trying to understand how it works and this has been very useful. Manual transmissions are quite easy for a layman like me to understand but autos are more complex to get my head around.
Thanks for this. You were much more clear than that other automatic transmission video that has over a million views. I'll need to watch it again a few times. I also have a few webpages open that explain the math of planetary gears.
+Soylant I am happy you find it helpful. I agree that there are many videos explaining how automatic transmission works, but they all skip the part on how all those gears actually create all those ratios (power-flow). I didn't go about the math of planetary gears because I didn't want to be too confusing, when already kinda is. Good luck
best combination of visuals and explanation by far. going to rewatch a few videos showing a more realistic transmission now with a much better understanding and get the best of all worlds. cheers mate
***** i read an article at HowStuffWorks. Yes, there are electrical sensors and it's common now. Before they exist, they have a mechanical air-pressure detecting system to detect if the engine works so hard, and detects which clutch gear is hold. If the certain pressure is reached, a valve opens automatically to pump air to make the clutch work, just like how you manually use brakes. Wow I learnt so much starting from this video!
Thank you sir, I have a question. 9:13 Applying C5 will only prevent the planet gears of P2 from turning. They can still spin. Since the planetary carrier of P1 is connected to the ring gear of P2, I wonder if the motion of P1 will pass to P2 through that path, making the planet gears of P2 to spin, resulting a reverse gear instead of a neutral one. Please correct me if I am wrong :(
@@interlinkknight Do you mean there are somethings that intercept the power transmission from the P3 carrier to the output shaft during the neutral gear?
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@interlinkknight ok I am doing a latex PDF calculating all the ratio ! I was assuming that sun Gear has a radius of r, planetary Gears have a radius of r/2, and of ce the ring Gear a radius of 2r, am I right ?
@@interlinkknight i am curious about the ratio of the various radius (Sun Gear, planetary Gear set, ring Gear) !in order to do the math ! PS if you are not aware, i will deducte from the ratio of the first Gear ! Thanks you again for your video
The gear ratios for my model are: 1st: 3.20 2nd: 1.86 3rd: 1.43 4th: 1 5th: 0.70 6th: 0.60 R: 4.41 There are websites that calculate ratios of gear sets. Just add the ratio of one set to the other, if you really want to do it. By the way, to calculate ratios we use teeth amount, not diameter or size.
@Mr Sunshines By that logic, this transmission would be called a gear. It isnt a gear. it's a system of gears working together, as is the hydraulic control - a system of valves working together. if you think it is simple, search up a "valve body".
#interlinkknight i understand how the internals of an automated gearbox works, you've explained it perfectly, but how exactly does pressing the accelerator transform into shifting gears?
+adrian ionut On the bottom of the transmission there are a set of valves and solenoids that are controlled by a computer that "decide" what gear to put base on the speed of the car, speed of the engine and position of the pedal.
InterlinkKnight Ohh, I thought it was mechanically automatic... I was like what's so special about planetary gears that does that? Now I know that it's just a computer.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@dowskivisionmagicaloracle8593 Let me try. In gear 5 and 6, the sun gears turn freely and the planetary gears drive the sun gear. For gear 5 and 6, the output to P3 is the sun gear, not the carrier, and that`s why things change a little. In both cases, the faster the sun gear turns, the faster the final output will be. Imagine that the planetary gears and ring gear are turning at the same speed (like a 4th gear). In this case, the sun gear will spin with the same velocity as the other 2 gears, right? Now imagine that the ring gear is a little bit slower than the planetary gears. In this case, the sun gear need to spin a little bit faster (in relation to the ring gear, since the planetary gears have the same velocity as before) and that`s what happens. Before, the planetary gears were not spinning, just turning. If the ring gets slower, but the planetary gears don`t, they have to start spinning. The bigger the difference in the speed between the ring gear and the planetary gears, the faster the planetary will spin and the faster the sun gear will rotate. In gear 5, since the P2 ring is also rotating in the same direction, the relative velocity between the ring and planetary gears is not that great. In gear 6, the ring is stationary, so the difference between the speeds are bigger...
The answer is no. If the C2 clutch is engaged it would make the ring gear of the planetary gear set #3 (P3) turn with the input, and the C5 clutch blocks the ring gear of P3, so if you engage C2 and C5 you would lock/block everything. Is hard to follow the energy path, but watch carefully a few times and you will get it.
thank you for your respond, i still don't understand the whole system by 100 percent, but i see the logic and the harmonic relation between these components, i was falling asleep in the late night, when i watched this video 5th time ever. thank you for your job, this is the only video, that helped me to understand the automatic transmission principle. i would really appreciate if you made similar explanation videos on 7-speed and 8-speed automatic transmissions (such as mb 7-g tronic, gm hydramatic 8l90 or zf 8hp). thank you for your job!
I am glad I could help. Although I doubt I will ever make a video about other transmissions with more speeds because is hard work making the 3D model and the animation. I made this 3D model because I wanted to 3D print it someday to make it work in real life (small scale). After I had the 3D model, I realize I could make the animation and make a video explaining how it works. Also, if we all have a hard time understanding this basic/simple Allison transmission, can you imagine how hard would it be trying to understand the 8th speed transmissions? I've seen them from inside. Those are crazy complex.
What kind of genius can come up with all of this? The Buick Roadmaster was the first ever car to have an automatic transmission right? That was in the '40s, really impressive.
I must agree with Soylant - your explanation and animation present a genuine learning opportunity. Brownie points earned for not claiming that this is an 'easy to understand' gearbox. However, you did make the 'general concept' easy to understand, whilst at the same time providing the detail, that can be repeat watched. In effect, you managed to kill two birds with one stone. I could watch this one with my son (the benchmark)... whereas the 'learn engineering' vid was a complete fail, as witnessed by the comments (mine included). I think I'll go back and edit my post to add a link to this vid and Thomas Schwenke 's vid (describing a simpler setup).
wow definitely I have to watch a number of times before I get it, but my question is once in neutral and at high speed when the vehicle is on, is it ok to go back to drive, or will the transmission get damaged?
Is there direct metal-to-metal contact of the torque-transmitting gear surfaces? Or, are they separated by a thin layer of tranny fluid? Why is there is hydraulic pump to up-pressure the tranny fluid?
hi. realy helpful and thank you very much for the video. which software did you use to create this animation. i need to create an educational video for children to promote disability awareness. it will be a great help. thank you
I rebuilt my first, a Ford 3 speed, in high school. Believe it or not, even the new ones aren't that difficult to build. It's a matter of putting it all back together in the same order as it went in with all parts inspected and troublesome or worn ones replaced, and making sure your clearances are set correctly.Troubleshooting one is more difficult because it takes a greater understanding. This video was a random recommendation and I feel the author did a great job showing the Allison 1000. Take in mind, there are many, many different automatics out there with differing parts and methods.
If there was a P4 instead, would the sun hear of P4 also be connected to the sun gear of P3-P2, and the result would give you an eight-speed transmission? If so, does this continue to scale by two’s? Additionally, is P1 special only because you want to gain reverse? If reverse was not desired, would you be able to simplify the design?
Excellent explanation, btw you explained it better than some channels that have millions of subscribers. I have one question concerning the parking pawl, I always shift the gear when at full stop to neutral even if i'm leaving the car with the foot break fully pressed of course to avoid wearing of the parking pawl so is it right doing that ? Thanks
Thanks for your kind words. I always follow whatever the owner's manual says, which in this case they always recommend putting the selector in "park" and apply the handbrake whenever you park your car. The parking pawl is made to be used and should last the life of the vehicle. Don't be afraid of wearing that.
This is old, but no it doesn't. I have thrown old Ford and GM transmissions into park while moving at speed, and could hear the pawl grinding itself down, and that still didn't do enough to destroy it when I opened it up to inspect. That is one part I have never had to replace on a rebuild and I haven't heard of anyone else having to either. My experience is primarily with rear wheel drive American brand transmissions though. Once it's engaged, it's engaged and not going anywhere.
Sure it (A tLast!!!) is helpful Interlinkknight. (At my pace, I have to comprehend each "gear movement", day by day, but understanding them firmly, and in a deductive form. Thank You Very Much Interlinkknight.
That would be cool but I have many projects I'm working on, so maybe in the future. I encourage you to make it yourself, maybe with Fusion 360. It's easy to use, free and you can do basically anything. Give it a try!
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
+InterlinkKnight No, seriously. If for gear 5 the ring gear and sun gear are turning at input speed for P2 whereas for gear 6 ONLY the sun gear is turning at input speed how can the result possibly be faster?
P2 on 6th gear: - Ring static; - Carrier spinning with the input; - Sun gear going a lot faster than the input. P2 but now in an alternative situation: - Ring gear spinning with the input; - Carrier spinning with the input; - Sun gear going at the same speed as the input. Can you fill the gap in between both situations? What happens if the ring turns a little instead of a lot? Well, the sun gear would turn faster than the input but not as much as if the ring would be static.
On the description there is a link to a video showing how the clutches actually work. They use hydraulic pressure to move pistons that push the clutch plates together.
Sir can you please explain the working of C1 and C2 as you used the terms 'this piece' and 'other piece' which I didn't understood please sir and anyone please
You know the yellow part? If C1 clutch is activated the yellow piece is connected to the input. If C2 is enabled, the yellow part is connected to the input
hello, great explanation, I'm trying to make my own design, but once calculated, I could not draw the teeth of each of my gears the right way, I searched the internet but I have not gotten an explanation that can understand easily. Do you know any source of information? or maybe Could you tell me how to do this? Thanks in advance
+Akamaru Manu You mean that you are trying to make your own 3d model and you don't know how to make the teeth of the gears? If that's what you mean, I can't help you because I didn't make the gears for my model. I download the 3 planetary gear sets and I made the rest by myself.
+Akamaru Manu Hi again. I found this planetary gear set that you can customize as you want: www.thingiverse.com/apps/customizer/run?thing_id=968011&code=7424bf0420a242d60425d8a425332217 Essentially you can create your own planetary gear set with that, very easily. I use it to re-make my transmission a few weeks ago.
I don't understand the question. "D" means is in drive so the transmission would change to all the gears depending on the speed and throttle position. The transmission computer is the one deciding which gear to select.
@@interlinkknight Ohh! So that means it changes as you drive, and when you manually select, for instance 2nd gear, it means you are "locking" that gear, thanks for the info know I understand!
7:20 Movement@P3 for 5th gear 8:08 Movement@P3 for 6th gear As far as I know, when planet carrier is output, It is under-drive if sun rotates faster than ring gear. But strangely these cases are over-drive? hmmmm..... who can help me understand?
+interlinkknight Hi, thanks for the video. Could you please tell me, is there a site where I can find the part drawings of Allison 1000 transmission? [I understand you have made changes for simplifying but I am looking for the actual models or dimensions to model them]
I don't know where you can find drawings of the actual transmission. What I used for reference was a video by weberauto where they show all the parts and how they assemble together.
This is such a great video the only issue that I would see is that the transitions are extremely too quick not allowing for anyone to process the information that your providing. Also you are moving too fast from one concept to the other. The one Saving Grace is that I could Slow Down the video on TH-cam. But thank you thank you for taking the time I'm making this video my life is a lot more enriched.
Thank you very much for this wonderful animation. I'd have to watch it a few more times to grasp it better but its good that you explained each gear including N & P. #OneMessageFoundation
I suppose you can calculate the gear ratio, but it can be complicated because we are dealing with 3 planetary gear sets. I already did mention the gear ratios on the video, anyway.
Can someone who knows the tautomatic transmission better answer to me: When I visualize it, it sounds like transmitting the power through all these gears wastes lots more energy compared to gear-wise much simplier manual transmission. Am I correct?
A computer decides when to change gears base on the speed of the output, engine rpm and load. The computer activate hydraulic valves that enable the clutches.
I was watching a f.ing bunch of videos to understand the automatic gearbox, and only yours is worked. Good job
Yeah, same happen to me. I watch so many videos and none was detailed enough to really understand how everything works. Was only after I finish the animation that I trully understood. Is nice to see that i helped. Cheers.
agreed
Awesome!!! Learned sooo much about them... thanks buddy...
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@dowskivisionmagicaloracle8593 maybe cuz the torque converter is locked?
Thanks for this explanation. I do think that it's not the planetary gearing that is difficult to understand but how hydraulic pressure is used to control the clutches and how this interacts with the planetary gear system. The structure of the clutch packs is also complex and worthy of a model.
This is one of the best most simplified animations on TH-cam!! You deserve more views! Still very very challenging to understand as you have to imagine multiple things working all together in a 3D multi-layed synergy. Its fascinating.
:) thanks
This is by far one of if not the best explanation for understanding Automatic transmissions. Thank you!
one of the best explanation about Automatic Transmission! thanks!
You're welcome
I love this. I have been trying to understand automatic transmissions for a while and this finally made it click.
Brillian explanation for the inner working of a transmition,what a tutorial, master teacher, many people who repair a transmition are barely part changers, only a few know how is working and how the ratios are obtained.
Definitely the best video on automatic transmissions online. The first that really helped me understand!
bro , you just make way easier , this the best explanation ever
By far the best explanation I found regarding automatic transmission, but I think I need to watch a few more time to grasp it. Thanks
Best animation and illustration seen till now for explaining automatic transmission. You know, it will be even better if you show the same animation while taking a quarter section to show the ring gear movement before showing each section alone. It will make it more understandable. Appreciate your great effort in this video. 👏
Well somebody put a lot of effort and I must say, it didn't go waste even a bit!.
Cheers.
Unbelievably comprehensive video of all! You are such a genius!
No thenkuy
Thank you, very well presented. Ever since I had to have my auto transmission rebuilt I've been trying to understand how it works and this has been very useful. Manual transmissions are quite easy for a layman like me to understand but autos are more complex to get my head around.
Thanks for this. You were much more clear than that other automatic transmission video that has over a million views. I'll need to watch it again a few times. I also have a few webpages open that explain the math of planetary gears.
+Soylant I am happy you find it helpful.
I agree that there are many videos explaining how automatic transmission works, but they all skip the part on how all those gears actually create all those ratios (power-flow).
I didn't go about the math of planetary gears because I didn't want to be too confusing, when already kinda is.
Good luck
best combination of visuals and explanation by far. going to rewatch a few videos showing a more realistic transmission now with a much better understanding and get the best of all worlds. cheers mate
I'm glad it could be useful for you :)
This is bt far the best explanation of of the automatic transmission in youtube
Compared to other video, this video made me understand better on how automatic transmission works
Thank you, this was really helpful. I finally understood how automatic drive with planetary gearing works!
THANK YOU!
Absolutely best demo I have seen so far...
Wow. Thanks.
You make engineering look simple. Well done
after like a dozen videos about automatic transmission, FINALY I GET IT! THANK YOU! you got a like and a new subscriber!
That really explains everything! Now I need to know how these machines engage each of the clutches *on its own*
a computer with sensors
***** i read an article at HowStuffWorks. Yes, there are electrical sensors and it's common now. Before they exist, they have a mechanical air-pressure detecting system to detect if the engine works so hard, and detects which clutch gear is hold. If the certain pressure is reached, a valve opens automatically to pump air to make the clutch work, just like how you manually use brakes.
Wow I learnt so much starting from this video!
+FrostMonolith internet is awesome :)
Thank you sir, I have a question.
9:13 Applying C5 will only prevent the planet gears of P2 from turning. They can still spin.
Since the planetary carrier of P1 is connected to the ring gear of P2, I wonder if the motion of P1 will pass to P2 through that path, making the planet gears of P2 to spin, resulting a reverse gear instead of a neutral one. Please correct me if I am wrong :(
The gears are still going to move with the wheels, but they are still considered in neutral because the engine and the wheels are not connected
@@interlinkknight Do you mean there are somethings that intercept the power transmission from the P3 carrier to the output shaft during the neutral gear?
No, but the gears are free to move . A little of friction from the gears might be transmitted to the output but it's so little that it is not relevant
Very Well put together. The illustration was very educational, and Interesting. I enjoyed it, and I learned something I never knew before.
I am glad i could help.
Cheers
Best video I could find on automatic transmission. Keep it up
Extremely good animation and explanation. Well done. :)
I understand more with animation like this than others, thank you so much
Wow this helped. Been wondering how it worked more or less. Have been watching videos that are too confusing. But this was great. Thanks
Awesome.. detail explanation with 3D drawing, very helpful. Thanks.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
better than what others have presented. thank you so much mate!!!! loved it
Excellent overview of the basic mechanics of an automatic transmission... Thanks
The best explanation yet...got it! 👍
Bonjour de Paris !
As every une says, the best vidéo about Allison transmission ! Everything is now clearer !
I am so happy I could help. Thanks for your words.
@@interlinkknight ok I am doing a latex PDF calculating all the ratio ! I was assuming that sun Gear has a radius of r, planetary Gears have a radius of r/2, and of ce the ring Gear a radius of 2r, am I right ?
I don't understand the question
@@interlinkknight i am curious about the ratio of the various radius (Sun Gear, planetary Gear set, ring Gear) !in order to do the math ! PS if you are not aware, i will deducte from the ratio of the first Gear ! Thanks you again for your video
The gear ratios for my model are:
1st: 3.20
2nd: 1.86
3rd: 1.43
4th: 1
5th: 0.70
6th: 0.60
R: 4.41
There are websites that calculate ratios of gear sets. Just add the ratio of one set to the other, if you really want to do it.
By the way, to calculate ratios we use teeth amount, not diameter or size.
this is the most helpful autogear tutorial goo job brother
Make a video on how the hydraulic is being controlled to switch gears
Yeah, me to, i want to know...
@Mr Sunshines By that logic, this transmission would be called a gear. It isnt a gear. it's a system of gears working together, as is the hydraulic control - a system of valves working together. if you think it is simple, search up a "valve body".
@Mr. Sunshine whats is wrong with you
@Hay Day You are stupid as f**
#interlinkknight i understand how the internals of an automated gearbox works, you've explained it perfectly, but how exactly does pressing the accelerator transform into shifting gears?
+adrian ionut On the bottom of the transmission there are a set of valves and solenoids that are controlled by a computer that "decide" what gear to put base on the speed of the car, speed of the engine and position of the pedal.
InterlinkKnight Ohh, I thought it was mechanically automatic... I was like what's so special about planetary gears that does that? Now I know that it's just a computer.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
@@dowskivisionmagicaloracle8593 Let me try. In gear 5 and 6, the sun gears turn freely and the planetary gears drive the sun gear. For gear 5 and 6, the output to P3 is the sun gear, not the carrier, and that`s why things change a little. In both cases, the faster the sun gear turns, the faster the final output will be. Imagine that the planetary gears and ring gear are turning at the same speed (like a 4th gear). In this case, the sun gear will spin with the same velocity as the other 2 gears, right? Now imagine that the ring gear is a little bit slower than the planetary gears. In this case, the sun gear need to spin a little bit faster (in relation to the ring gear, since the planetary gears have the same velocity as before) and that`s what happens. Before, the planetary gears were not spinning, just turning. If the ring gets slower, but the planetary gears don`t, they have to start spinning. The bigger the difference in the speed between the ring gear and the planetary gears, the faster the planetary will spin and the faster the sun gear will rotate. In gear 5, since the P2 ring is also rotating in the same direction, the relative velocity between the ring and planetary gears is not that great. In gear 6, the ring is stationary, so the difference between the speeds are bigger...
Yours is the only explanation that worked. Thanks Man!
I'm glad
Does the system just lock up if you engage other ring gear combinations such as C2+C5, C3+C4, C4+C5, or triple or some combos?
My mind didn't comprehend all of what was going on there, but it does look good so subscribed, liked, and totally faved.
Thank you for making this video. It simply is not making helping people understand.
Well shit man this is the closest ive gotten to actually understanding how it works, thanks for that
I finally could understand the idea with ur clear explanation, thx a lot
I'm glad I could help
i've got the question. turn up 3:37 and can you say if we can have a 7th gear by engaging c2 and c5 clutches?
The answer is no. If the C2 clutch is engaged it would make the ring gear of the planetary gear set #3 (P3) turn with the input, and the C5 clutch blocks the ring gear of P3, so if you engage C2 and C5 you would lock/block everything. Is hard to follow the energy path, but watch carefully a few times and you will get it.
thank you for your respond, i still don't understand the whole system by 100 percent, but i see the logic and the harmonic relation between these components, i was falling asleep in the late night, when i watched this video 5th time ever. thank you for your job, this is the only video, that helped me to understand the automatic transmission principle. i would really appreciate if you made similar explanation videos on 7-speed and 8-speed automatic transmissions (such as mb 7-g tronic, gm hydramatic 8l90 or zf 8hp). thank you for your job!
I am glad I could help. Although I doubt I will ever make a video about other transmissions with more speeds because is hard work making the 3D model and the animation. I made this 3D model because I wanted to 3D print it someday to make it work in real life (small scale). After I had the 3D model, I realize I could make the animation and make a video explaining how it works. Also, if we all have a hard time understanding this basic/simple Allison transmission, can you imagine how hard would it be trying to understand the 8th speed transmissions? I've seen them from inside. Those are crazy complex.
What kind of genius can come up with all of this? The Buick Roadmaster was the first ever car to have an automatic transmission right? That was in the '40s, really impressive.
I must agree with Soylant - your explanation and animation present a genuine learning opportunity.
Brownie points earned for not claiming that this is an 'easy to understand' gearbox.
However, you did make the 'general concept' easy to understand, whilst at the same time providing the detail, that can be repeat watched.
In effect, you managed to kill two birds with one stone.
I could watch this one with my son (the benchmark)... whereas the 'learn engineering' vid was a complete fail, as witnessed by the comments (mine included).
I think I'll go back and edit my post to add a link to this vid and Thomas Schwenke 's vid (describing a simpler setup).
+PlayF1 Net Thanks for your words. Is nice knowing my effort is useful for other people.
Your explanation is simply amazing. Thank you so much!!!
Well done. Thanks for producing.
Superb explanation - well done !
wow definitely I have to watch a number of times before I get it, but my question is once in neutral and at high speed when the vehicle is on, is it ok to go back to drive, or will the transmission get damaged?
As far I know it would not damage the transmission. I've done it and my transmission is fine
Beautiful, Amazing, Genius, Analysis of mechanism..... 👍 no more words to describe your efforts.... Thank you.... 😜
possibly add a clutch between sun p2 and sun p3 , then engage c2 and c5? and what about c3 and c4?
thank you very much for this wonderful video .Do you have another ones about how the torque convertor works together with the transmission
+salem ogla Not really. But would be cool. Maybe someday, but for now I don't have plans of making a torque converter video. Cheers.
Is there direct metal-to-metal contact of the torque-transmitting gear surfaces? Or, are they separated by a thin layer of tranny fluid? Why is there is hydraulic pump to up-pressure the tranny fluid?
There's fluid everywhere. The pump keep the fluid moving
hi. realy helpful and thank you very much for the video. which software did you use to create this animation. i need to create an educational video for children to promote disability awareness. it will be a great help. thank you
Blender
Modern automatic transmissions are a marvel of engineering. Glad they work so well so I don't have to work on them myself.
I rebuilt my first, a Ford 3 speed, in high school. Believe it or not, even the new ones aren't that difficult to build. It's a matter of putting it all back together in the same order as it went in with all parts inspected and troublesome or worn ones replaced, and making sure your clearances are set correctly.Troubleshooting one is more difficult because it takes a greater understanding. This video was a random recommendation and I feel the author did a great job showing the Allison 1000. Take in mind, there are many, many different automatics out there with differing parts and methods.
If there was a P4 instead, would the sun hear of P4 also be connected to the sun gear of P3-P2, and the result would give you an eight-speed transmission? If so, does this continue to scale by two’s?
Additionally, is P1 special only because you want to gain reverse? If reverse was not desired, would you be able to simplify the design?
Excellent explanation, btw you explained it better than some channels that have millions of subscribers. I have one question concerning the parking pawl, I always shift the gear when at full stop to neutral even if i'm leaving the car with the foot break fully pressed of course to avoid wearing of the parking pawl so is it right doing that ? Thanks
Thanks for your kind words.
I always follow whatever the owner's manual says, which in this case they always recommend putting the selector in "park" and apply the handbrake whenever you park your car. The parking pawl is made to be used and should last the life of the vehicle. Don't be afraid of wearing that.
This is old, but no it doesn't. I have thrown old Ford and GM transmissions into park while moving at speed, and could hear the pawl grinding itself down, and that still didn't do enough to destroy it when I opened it up to inspect. That is one part I have never had to replace on a rebuild and I haven't heard of anyone else having to either. My experience is primarily with rear wheel drive American brand transmissions though. Once it's engaged, it's engaged and not going anywhere.
Sure it (A tLast!!!) is helpful Interlinkknight. (At my pace, I have to comprehend each "gear movement", day by day, but understanding them firmly, and in a deductive form. Thank You Very Much Interlinkknight.
You're welcome. I am glad I could help.
Niiiiiice video!
Would applying C2 + C5 result in a 7th gear ratio?
Applying C2 and C5 would block the input. C5 clutch would not allow C2 to move
Superb illustration. Great work
Just curious, and sorry i seem rude hear. At 0:39 did you say " and a plain clutches"?
+Kaelan Ross I said "applying clutches". English is not my first language so excuse me if I am not very clear.
Can you make a video for the 3-speed double planetary set in say a Toyota 2000?
That would be cool but I have many projects I'm working on, so maybe in the future. I encourage you to make it yourself, maybe with Fusion 360. It's easy to use, free and you can do basically anything. Give it a try!
Very nicely done, good video thanks man, good explanation and good animation.
I don't understand how the sun gear turns faster on P2 for gear 6 than it does for gear 5. Are you sure you got this right? Or should the configuration for gears 5 and 6 be switched?
I am sure it is right. Just watch the video carefully.
+InterlinkKnight No, seriously. If for gear 5 the ring gear and sun gear are turning at input speed for P2 whereas for gear 6 ONLY the sun gear is turning at input speed how can the result possibly be faster?
P2 on 6th gear:
- Ring static;
- Carrier spinning with the input;
- Sun gear going a lot faster than the input.
P2 but now in an alternative situation:
- Ring gear spinning with the input;
- Carrier spinning with the input;
- Sun gear going at the same speed as the input.
Can you fill the gap in between both situations?
What happens if the ring turns a little instead of a lot? Well, the sun gear would turn faster than the input but not as much as if the ring would be static.
Awesome mechanism, but how does the braking clutches go from disengaged to engaged? Thanks! Keep up the good work :)
On the description there is a link to a video showing how the clutches actually work. They use hydraulic pressure to move pistons that push the clutch plates together.
InterlinkKnight Oh, of course! thanks for replying!
Awesome explanation
Awesome video. I'd love to see one about a Ravigneaux type automatic transmission.
For P1, P2, and P3 to engage individually they each need a multiplate clutch?
Yes, there are 5 clutches in total: 3 for each planetary gear set and 2 for the input
The best explanation... Thanks...
You're welcome
excellent demonstration & explanation,many many thanks.
I am glad it was useful.
Sir can you please explain the working of C1 and C2 as you used the terms 'this piece' and 'other piece' which I didn't understood please sir and anyone please
You know the yellow part? If C1 clutch is activated the yellow piece is connected to the input. If C2 is enabled, the yellow part is connected to the input
Oo thanku sir
Excellent demonstration!
hello, great explanation,
I'm trying to make my own design, but once calculated, I could not draw the teeth of each of my gears the right way, I searched the internet but I have not gotten an explanation that can understand easily.
Do you know any source of information?
or maybe
Could you tell me how to do this?
Thanks in advance
+Akamaru Manu You mean that you are trying to make your own 3d model and you don't know how to make the teeth of the gears? If that's what you mean, I can't help you because I didn't make the gears for my model. I download the 3 planetary gear sets and I made the rest by myself.
+interlinkknight Nooooooooooo!!!
jhajhahahah
ok ok thank any way ;)
+Akamaru Manu Hi again. I found this planetary gear set that you can customize as you want: www.thingiverse.com/apps/customizer/run?thing_id=968011&code=7424bf0420a242d60425d8a425332217
Essentially you can create your own planetary gear set with that, very easily. I use it to re-make my transmission a few weeks ago.
thanks
since im learning transmissions this helped allot thank you
+Knights Forge & Gold You're welcome
wowsa!!!! i am drinking an few adult beverages this evening watching this in my shop and you BLEW my mind!!!! :)
So we can have a 4 speed auto transmission for2 planetarygear sets?
I guess yes
So when I drive with the "D" gear does that mean I'm driving always like the configuration you showed like 5th gear or 6th gear?
I don't understand the question. "D" means is in drive so the transmission would change to all the gears depending on the speed and throttle position. The transmission computer is the one deciding which gear to select.
@@interlinkknight Ohh! So that means it changes as you drive, and when you manually select, for instance 2nd gear, it means you are "locking" that gear, thanks for the info know I understand!
Far more easy to understand among other utube videos
Thanks 🙂
Hi great video, do you have some pattern to calculate gears ratio in Allison 1000?
There's websites that have calculators for planetary gear sets
7:20 Movement@P3 for 5th gear
8:08 Movement@P3 for 6th gear
As far as I know, when planet carrier is output, It is under-drive if sun rotates faster than ring gear. But strangely these cases are over-drive? hmmmm..... who can help me understand?
The sun gear is also spinning and very fast so that creates the overdrive situation.
+interlinkknight Hi, thanks for the video. Could you please tell me, is there a site where I can find the part drawings of Allison 1000 transmission? [I understand you have made changes for simplifying but I am looking for the actual models or dimensions to model them]
I don't know where you can find drawings of the actual transmission. What I used for reference was a video by weberauto where they show all the parts and how they assemble together.
okay. Thanks for the response. :)
Very interesting!! The reverse, out of normal mind.
This is such a great video the only issue that I would see is that the transitions are extremely too quick not allowing for anyone to process the information that your providing. Also you are moving too fast from one concept to the other. The one Saving Grace is that I could Slow Down the video on TH-cam. But thank you thank you for taking the time I'm making this video my life is a lot more enriched.
Thank you very much for this wonderful animation. I'd have to watch it a few more times to grasp it better but its good that you explained each gear including N & P.
#OneMessageFoundation
I'm glad I could help
Best explanation.
2 nov 2019 11:39 am edt:thanks, i wonder how transmission look like during n/neutral with car descending a hill
If I calculate this counting teeth of gears, can I get gear ratio in the video?
I suppose you can calculate the gear ratio, but it can be complicated because we are dealing with 3 planetary gear sets. I already did mention the gear ratios on the video, anyway.
OK so I kind of get how the gears work and how the torque converter works but how does the car know when to change gear? BTW great video's
A computer decide what gear to put based on speed, engine rpm and throttle position
@@interlinkknight Cool. Thanks for the reply
This video is very helpful to understand mechanism
Please explain the work of piston in automatic transmission
There is already a great video explaining that. Link on the description.
Engineering never gets old.
Nice explanation sir, keep it up.
Can someone who knows the tautomatic transmission better answer to me: When I visualize it, it sounds like transmitting the power through all these gears wastes lots more energy compared to gear-wise much simplier manual transmission. Am I correct?
good job. really easy to understand. thank you bro.
have a question, how is the gear change\shit initiated ?
A computer decides when to change gears base on the speed of the output, engine rpm and load. The computer activate hydraulic valves that enable the clutches.
Really strong Gboxs, used in loaders and trucks.
Fantastic stuff mate! How are you not at the top of the youtube list!!?
Very nicely done.
Its the gear ratio are the same with my chevy 5500?
Each car has a different need for gear ratio and amount of gears