Planetary Gear Set Operation - AUSV 2520
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- Опубліковано 21 тра 2024
- See a demonstration of the basic mechanical operation of a planetary gear set
TIMELINE:
0:00 Introduction
0:45 The parts of a simple planetary gear set
1:50 Possible gear ratios of a single planetary gear set
2:18 Underdrive gear ratios
2:54 Overdrive gear ratios
3:50 Reverse gear ratios
4:00 Direct drive ratio
4:16 Usable gear ratios
6:18 The physical size of gears is related to their torque capacity
7:35 How power is transferred through a planetary gear set
8:58 Reverse
9:12 Underdrive
10:00 Overdrive
10:25 Direct drive
11:32 The three Allison 1000 transmission planetary gear sets
12:53 Parking gear and pawl
27:05 Function of Five Allison transmission clutch packs
31:25 Allison 1000 Clutch application chart
33:40 Universal transmission operation theory
38:34 Powerflow through the Allison 1000 planetary gear sets
40:37 First gear
42:19 Second gear
43:38 Third gear
44:21 Fourth gear
45:12 Fifth gear
46:10 Sixth gear
46:35 Reverse
47:48 Troubleshooting
50:32 Video summary
This video is intended for students in the online AUSV 2520 Automatic Transmissions class at Weber State University in Ogden, Utah. This class is normally taught face-to-face, but due to the COVID-19 Pandemic in 2020, I am attempting to offer the class material online. Suggested quiz questions are shown below the video timeline.
Questions for teachers:
1. What are the three main pieces of a simple planetary gear set?
2. How many underdrive gear ratios are possible with a simple planetary gear set?
3. How many overdrive gear ratios are possible with a simple planetary gear set?
4. How many reverse gear ratios are possible with a simple planetary gear set?
5. How many direct gear ratios are possible with a simple planetary gear set?
6. How many usable/practical gear ratios are possible with a simple planetary gear set?
7. How is power typically transferred through a simple planetary gear set?
8. How does the parking gear keep the vehicle from rolling in the park position?
9. What does the term "Compound simple planetary gear set" mean?
10. What is the function of the clutch packs in the Allison 1000?
11. What component in a transmission causes clutch packs to apply?
12. What component controls the valves in the valve body?
13. What component controls the electronics in the valve body?
14. Use the Allison 1000 clutch application chart download from below for the remainder of the questions
15. Which clutches are used to provide first gear? Choose two: C1, C2, C3, C4, C5
16. Which clutches are used to provide second gear? Choose two: C1, C2, C3, C4, C5
17. Which clutches are used to provide third gear? Choose two: C1, C2, C3, C4, C5
18. Which clutches are used to provide fourth gear? Choose two: C1, C2, C3, C4, C5
19. Which clutches are used to provide fifth gear? Choose two: C1, C2, C3, C4, C5
20. Which clutches are used to provide sixth gear? Choose two: C1, C2, C3, C4, C5
21. Which clutches are used to provide reverse gear? Choose two: C1, C2, C3, C4, C5
22. Tell me one thing you learned or found interesting in this assignment?
Download the Allison 1000 clutch application chart at weberstate.box.com/s/3tat9ski...
ABOUT US:
Weber State University (WSU) - Automotive Technology Department - Automatic Transmission Lab. A technical description and demonstration of the basic mechanical operation of a planetary gear set in an automatic transmission or transaxle. Components from the Allison 1000 Transmission were used in the majority of this video.
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
This video was created and edited by John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive
after watching this..my overall knowleged as human being is completed I can now rule the world..thanks to this guy..👍👍👏👏👏
Thanks for watching
Wow thanks for your knowledge sir
There are people who teach and there are people who have the inherent ability to open the minds of other to allow them to see through the otherwise unknown with clarity. Anyone who has the opportunity to sit in the same room with this man should sit quietly with eyes, ears wide open in hopes to absorb as much as possible. Thank you for your contribution to the automotive industry.
Thank you very much
Unfortunately there is student who won't stop talking. Very obnoxious, and sure sounds like a very irritating fellow named Alex.
I studied auto mechanics in Fenger HS in Chicago, in 1949, by a VERY knowledge teacher named "Mr Loizo". Truly the greatest teacher I have EVER known. He was a former GM engineer.
I am 84 now and it took me this long to find a teacher I could call "second" ONLY to my beloved and late Mr Loizo". Thank you so much for making an old man's day in my waning years.
Note: Automatic transmissions were in the VERY infant stages then; and obviously little was able to be taught to HS students. However, we WERE introduced to planetary gears using GM's Hydormatic Transmissions. As I recall, it had 3 sets of PG's. But that is ALL we were shown.
But I never lost my craving for more. So I thirsted for more and more in various and sundry places all these ensuing years. But NOTHING helped me like your unprecedented video. I am blown away.... Wow! I understand it now. Wow! I feel like I could run down the road and "eat the bark off of trees". Yippee!
May Jesus richly bless you and yours always dear sir.
carl dixon
+pat dee Thank you very much! Best wishes to you!
+pat dee What a beautiful building Fenger is. Truly lucky you are .--Wallace between 112 and 113 if memory serves me right.
You are correct John. If you know about Fenger HS, you know they had two satellite schools to hold down the load during one's Freshman years. One was called "Burnside HS" (the one I attended) and the other was called Mt Vernon HS.
I shall forever be blessed by going to Fenger. For it was one of America's very finest when it came to a true HS education (very rare today). The author of this video reminded me so much of the instructors at Fenger.
As a result of the education I received, it helped immeasurably in my 45 yr career in the work place. Auto mechanics I didn't pursue, but NEVER lost my love for it.
My career was in electrical and electronic engineering; and my electrical "shop" at Fenger; of course played a major role in that too.
Again thanks to this wonderful modern day (rare indeed) instructor John Kelly. If one can't learn from him they can NOT learn.
May Jesus bless him and you always dear friend.
Thanks for your reply. Are Burnside and Mt Vernon still there? Like to take a look as one of my interests is old school architecture. Unlike the schools that are built today, they were much more than just a box in years gone by.........thanks again for replying.. I luv Chicago....what a wonderful city...
I just took a look on Google Earth. Is Burnside on Langley and Mount Vernon on Morgan St? Mount Vernon looks especially beautiful. I'll have to go take a look this summer when I'm in Chicago seeing my brother....Are these areas considered the far south side? thanks again for replying...JJ
Hi John,
Actually, I left Chicago in 1952 and moved to Florida. Then in 1975 I was transferred to Atlanta and been here ever since.
Thus I know little of what has happened to Chicago during these many years..
Thanks for asking dear friend. My email is patdeeee@yahoo.com, for whatever it's worth.
Take care john
I don't usually post comments. However, I have to say that this Teacher is great. He breaks it down to the basics so well. This demo is the best so far.
Thank you very much
God!! Finally a proper explanation!! Sir you the best. After digging into the internet for 2 months, I finally landed up here to learn the automatic transmission perfectly. The best explanation I have come across.
And for god sake kick that annoying kid out of the class!
This is the planetary gears in an automotive transmission explanation I've wanted for 30 years. Thank You!
I was watching this because I always wanted to know how planetary gears work, and how they're used in transmissions. So, I'm watching this and my wife, in another room, heard the man's cadence, his self-confidence, and his obvious expertise with the material. She also picked up enough to know that it was about transmissions. This is a great talk and this man is a fantastic teacher.
+mjbirdClavdivs Thank you very much!
Always wanted to be an engineer, but couldn't do maths and became a lawyer! Never understood how an AT works, but this video is an absolute model of clarity even for the uninitiated, so now I do. Thank you professor.
I will probably never work on a transmission but this is the best teacher by a mile - I got so many of the concepts from this. Super fascinating.
Glad it was helpful!
I've been that way too eager student asking questions not necessarily to garner information rather to show others my interest. Sucks I probably came across the same way, great teachers have great patients and I'm thankful I've had many.
Sir John Kelly you are literally the best teacher, I just started to watch your videos and I think all the other videos that I watched on youtube are crap
BEST TEACHER EVER! I'm an IT guy just surfing for the hell of it and he was able to make even ME understand how it worked. Wow, hats off to him!!!
+jebpab53126 Thank you!
Never bad to learn more things.
IT guy here too. If only the world had more teachers as concise as this guy! Hats off to him.
If high school had these type of classes I would have never wanted to drop out.
I don't work on cars but I found this to be absolutely fascinating. What a great teacher!
+kerryhall Thank you!
@kerryhall
People who "work on cars" don't touch these components that the gentleman's w
@kerryhall
..discussing. ☆Transmission specialists look at these parts
I just interested in car/automatic repairs, something DIY-like stuff. I think the same, really great teacher. Shows and explains everything right. I hope that the schools become to this QUALITY some day here in Hungary.
kerryhall where do the spark plugs go
WOW! So many components!, a wonderfully ingenious but complicated way to achieve an automatic transmission. In the U.K. we still retain manual gearboxes on c70% of our cars- they are understandably simpler, cheaper to produce and repair than autos , and only 1 clutch to replace!. However, after c 1.5 MILLION miles covered, mainly in London stop-start traffic, in my 60-year driving career, my left hip wore out from all those clutch-pedal depressions! I thoroughly enjoyed the video, thank you!
Thank you professor. You are a very knowledgeable man and a class A teacher. At age 72 I finally learned from you how does an automatic transmission system work and I have learned a lot more from you. Thank you a lot and please accept my best wishes.
I always enjoy the videos from Weber State Uni. I don't know how or why they're allowed to put their lessons online, but I sure am happy they do! Excellent lecturers too!
It amazes me how simple are in fact those machines, there's a lot of creativity on them. Those are the wonders of engineering in my opinion. Superb explanation professor, thank you very much.
Thank you very much
2 stroke theory came natural to me. 4 stroke was a breeze. Planetary gear sets and how they apply? Not so much, until right now. Thank you so much for this video, as now I can visualize the process after 40 years.
There is a saying that some of you ought to take note of " He who asks a question may be a fool for a moment, he who never asks is a fool for a lifetime". This is a superb piece of teaching BTW.
Thank you!
Mind blowing. Only some one who know how hard it is difficult to explain such complex things will appreciate this video, super complex is explained with super easy, hats off .. I like to see more videos on hydrallics of transmission please.
sivaraj palanisamy yeah that would be helpful for sure.
What a great teacher! Finally I sort of understand how a automatic transmission works! Thanks for the videos for both this and the one about the torque converter.
+Jostein Bareksten Thank you!
I don't have the grade point average to take a class like this, neither the high school equivalency, but "I got UA-cam," and I am in the class "baby.". And this is totally cool. Thanks to this instructor, "I totally get it. Thumbs up my man!
I tried to understand automatic transmission in the past 2 days watching other videos and only until I watch this one when I can totally grasp the concept. This great teacher not only explained how one set of planetary gear set worked but how the whole transmission system operated.
My salute this this great teacher.
Great to hear! Thanks for watching
These videos are extremely helpful. Had I had known about Weber State University before I chose the college I did, I would have made a serious effort to go here. I'm currently in my last semester at Ranken Technical College in ST. Louis, and it has been a terrible waste of money. From the videos of Weber State University, everything here is clean, organized, and labeled. Most importantly the instructor makes a real effort to explain each pieces individual purpose. I don't get any of that at Ranken. Thank you WeberAuto for posting these videos.
Mr. Kelly, you are a gifted teacher! Thank you for all the work you have put into making quality videos. Anyone who is wanting to learn more about automotive technology will benefit from these for years.
Thank you very much!
For the first time I got a real understanding of the workings of an automatic transmission . very well explained.
This takes me back to when i was an apprentice 55 years ago,we were sent down to solihul in the midlands to the rover factory for tuition on the Borg Warner auto trans boxes,and the tutor told us always to fit jaguar clutches if possible to obtain them,his reason was because jaguar fitted GM boxes which were the best in the world at that time and the clutches were of top quality materials and therefore the customer would get a good job well done and value for money, We took his advise and continued to do so until i retired with the rest of us.Anyway congratulations i have enjoyed watching and look forward to more of it in the future Regards J.T
So far, the best tutorial in explaining how an automatic transmission work. The automatic transmission and its inner working was like a black box to me until after seeing this video, everything becomes clear. I have always been pretty mechanical minded, but the workings of the automatic transmission has always been a mystery to me. It is just amazing how simple the principle is and by building multiple clusters, it all works exponentially in its gearing. Brilliant !!!!
+Henry Ting Thank you very much!
this is the clearest and most informative one I've ever found. I finally clear on the system operation principles
Brother, I want to thank you for this excellent edutainment while I work overseas in Kuwait. I’ve commented several times over the years as I work in the sandbox area, but watching your teachings provides me peace and knowledge. Very few people I work with understand or even care about mechanics and your videos produce a solace for my mind. Having lived in Layton when I worked for UPRR prior to contracting to Iraq brings the lesson closer to home. Home is near Poki North of you which is why I wonder how I can attend your classes. Break out the 5th wheel comes to mind. Golf at Hill. I must be tired, back to lessons.
at around 29-30 min the teacher stopped and smiled holding the clutches. this is because hes just brought his whole lecture together to the revelation of how this entire system works. i hope these kids appreciate his teachers wisdom. this is a smart guy, he's been very clear and methodical. this video is a great deal of use to me. thank you very much.
its easy too understand, by the way, how these things go together if you have the ability but theres many nuances of assembly and tricks with tooling and such. those things in auto mechanics and other technician work come with experience! ie, on his point of crushing bearings ;) one might not realize they just destroyed a bearing placing a 10 damn pound gear set into place haha
Thank you very much!
My god the complexity and engineering genius. i will never look at cars the same way. And this is probably the best explanation of planetary gears on the internet. if anyone know of anything better please tell me b/c i want to watch it and learn more.
Thank you!
your students are so honor to have a professor like you.
and a noob like me is learning so much from you.
such clear n simple explanation. how can one not be an expert under your teaching.
hope you make more videos of every brand.
thank you sir.
Thank you!
i have a question sir.
1.) will the planetary gear rotate as i step on the brakes or will it still rotate?
2.) the contact area where the clutch bend clamp down is it rotating at stationary with the brakes apply?
if the the area where the clutch bend clamp down is always rotating.
means it vry hi wear to the clutch bend. am i correct?
hope u can help me out.
When braking, typically the planetary gear sets will stop rotating.
tx sir,
hope to see it all work one day in a plexi glass case.
it will be very interesting.
professor john, with your knowledge and info.
could you tell me which company makes the most reliable & durable auto transmission for modern saloon cars.
If I had a teacher like you,who taught in details like you do, I would be dismantling and rebuilding gearboxes like a pro but all I got most was the engine. Your teaching skill is absolutely amazing. Your students should have no excuse of not understanding cos my teacher never came close to your teaching not even an ⅛th. Thanks a lot n God bless your heart
Thank you very much! Have a wonderful day
This is the best one I've seen yet. It's worth the extra time as his explanation is much more in depth and doesn't gloss over anything.
Thank you!
You are a legend. I wish you were teaching me. I study automotive engineering and would love to have you as my teacher. The way you explain everything is amazing! You make things sound very simple because you explain things very descriptively and carefully. You go over every question i would ask and made things clear. Thank you for sharing all the content with us!
Hi! I'm a Mechanical Engineer and this year, it's my first time teaching Automotive Technology at a Technical Vocational School in Greece. Thank you for teaching me - your help is priceless!!!
+Φωτεινή Σαριδάκη Thank you, I am glad these are helpful.
Hello again! Could you please, enable the closed captions in this video? It would help me a lot! Thank you!
transmissions are very complicated, this guy does a great job at simplifying it for the average person.
What is there not to like about this video, ? Why would you even watch it if you were not interested in this sort of thing? What a great video with a great teacher.
Thank you!
I agree with everyone here, this teacher is great. He makes it so easy to understand what he's explaining, to retain all the information, and to apply what he's taught, without the Kelly Bundy effect!! Ha ha
It is good to see someone training up the next generation. I made my first repair at age 11 and continued a parallel career in mechanical trades and broadcasting until I decided to go and fly jets. The Allison is a great box. I would like to see their faces when they first look into a Road Ranger, lol.
The best explanation best this teacher. I was trained by a heavy equipment company but the training is mostly using the books. This is the best training i ever had. Thanks a lot for these video.
You are the best teacher, learning so much from this video,hope to watch more . watching from Papua New Guinea 🇵🇬 ❤❤❤❤
Thank you! 😃
I've been a car guy my whole life and have understood the workings of most all systems in the car except for the automatic transmission and planetary gear sets. Thank you so much for finally explaining all this in a way I could understand.
Hey weber you guys have an awesome teacher. Best explanation I could find on the web nice to know people are still passionate about teaching good stuff
The first time in many decades I’ve ever come close to understanding how an automatic transmission works. INCREDIBLE.
Awesome! Thanks for watching
OM Goodness, I'm taking classes at community collage, doing the auto mechanics courses and now I want to do the transmission class!!! I love how clear the instructor is about this subject!
Why didn't I get a teacher like you in trade school? Well done, sir!
Thank you!
thank you guys for posting this! I've been studying automatic transmissions and didn't understand anything, but seeing all work together helped me to understand it!
+ssonsk Thank you!
I had been studied from 2005 to 2012 years, finished college and university. I have a bachelor's degree and work as a heavy-duty mechanic. In Kazakhstan, all students and teachers don't have opportunities to use this equipment. Corrupt government and degradation of education. So I want to give opportunities for my children to take good education. Very good lesson and teacher!
Thanks for watching
Very good explanation of planetary gears. I was trying to explaine them to my daughter and I have a PhD in Physics and one in Engineering and your explanation worked. Mine did Not. Nore did a graphical animation as it did NOT cover holding one part of the 3 main parts. You are clearly a pro craftsman and one hell of a teacher or professor. I tip my hat to you good sir.
Thank you very much
This is one of the best lessons showing how some great inventions are combined in one ultimate peace of machinery. Great explanation of every detail. I admire you, sir! Keep going with the videos. I like every one of your disassembly and maintainances!
+Andro Dimitrov Thank you!
wow what a great demo! wish we had a teacher like you! really great job
Education is all about hands on training. If we have a combined work experience of mechanical, electrical, electronic and computer systems, it will be one of the major asset.
Keep it up.
I have watched several videos on how this works but none of them have made any sense to me except this one. Thank you, you are a very good teacher.
Second time watching this, and still very impressed by this teaching. Thank you so much for this video
+Ricardo Barron Thank you very much!
"It's actually pretty simple"
Me: on my 37th youtube video trying to figure it out
😂
Mzee Kelly, is one of the gift from God, imgine audible, clear and brilliant pronounciations which not only make my hand skill job better but also I can understand the american english as well. I wish you visit Tanzania one day. These kind of people in anient times were termed Prophets.
Very Lucidly explained...............It just made the learning a hell lot interesting than merely studying books...........Thank You!!!!
Thanks for sharing!
Came after 4 yrs watch this beauty again. Thank you sir for helping me understand back in my ug days
Thank you very much!
Very good job. Without going into crazy detail you did a very good job of explaining the basics of how the gear system works. Seeing you show the sets actually rotating is worth 1000 words. Breaking a complicated item down into many simple lessons is a great way to teach. If you started going into gear timing and gear ratios it would have been a little overwhelming.
@wqq
Subscribed. Automatics made absolutely no sense to me until I saw this. I saw a cutaway of a Mercedes-Benz 7g Tronic the other day and my mind went blank. Now that I understand what the basic parts do I can put it into a larger perspective. Thank you!
Thank you!
Wow, I finally understand how an automatic transmission works. Have wondered this for 50 years. Thank you.
You are a great teacher and explains very well. Thank you!
Thank you!
An Awsome presentation!!! :)
Thanks for it.
Finally my thick head got it... two years 🤣🤣🤣 I had to understand the electronic part of it which took me to basic electronic classes and engine management...."man l love it".. thank you sir...
WOW this teacher is better than my teacher 10 times!! thank you much for your perfect explanation.
Great explanations-Excellent teacher.
I like your video, that guy or girl that keeps asking question that the student should now by now, keep you from giving a visual concept. Nice video I liked it.
@bad dog Too many question lead to disruption, so ask only the important ones or better still, wait until the lecture is over then ask. Don't make out that your intelligent if you ask questions..
Wee Tittle Nah, it’s the most pragmatic way to find out what you want to know.
He teach very clear,his voice,the way he speak not too fast....thank you for this video sir...hope you put a link of the continuation for this video below...I love to study automatic...but I am electrical special now on GM company i will keep watching your videos sir thank you sir for your sharing a knowledge to us....god bless
Thank you
I understood How Epicyclic Gearbox after 7 YEARS!!!. Massive Massive Thanks to this video and the Professor's method of explanation!
skillful teacher, thanks...
Really well made presentation. Thank you very much.
Thank you for watching!
professor, it looks so easy when you explain how all that gear and clutch pack put together and stack up I work on those transmissions for years and still feel very scary when R&R mechanic install them in the car but now with your instruction, I feel a lot more confident to work on them thank you very very very much professor the world need man like you, sir
Thank you!
I searched planetary gear operation as I wanted to see an actual on the bench demo of stopping the ring gears for each gear selection. This is a great demonstration the engineer giving it is a excellent teacher and very patient and thorough!
Watching this vid has allowed me to confirm what I always suspected: That automatic transmissions operate on witchcraft. However I also learned, in addition, that they are exotically beautiful inside.
Very informative and educative video well explained and understandable.
THE Best lesson ever! Thank You!
+studiojussi Thank you!
You have successfully helped me understand what several other UA-cam videos failed to do. Thanks!
Wow an almost 10-year-old video that still keeps on giving. I’m a mathematician and professor, and recently had my automatic transmission blowout. I was uncomfortable with all of the lingo and complicated concepts, and wanted to understand more about the science of how they actually work.
I’ve watched lots of videos, but this was exactly what I’ve been looking for. No, I’m not a mechanic, and nobody wants to hire me to work on their transmission, but I do now have both an intellectual as well as a practical understanding of the general basics of how they work now. So thanks!
I really do like this demonstration and it was extremely helpful
Thank you very much.
Most clear explanation that I've seen
Mesrop Davoyan Thank you!
He has the patience of Job. I would really like to take his class. Fascinating! Great teacher!
wow this is a teacher!!!! thank you
thank you sir Kelly now I understand automatic transmission work
+Chrismalito Terec Thanks for watching!
People who say they're not interested in engineering haven't seen how satisfying it is to put planetaru gears togethor.
The explanation and practical illustration is extremely done in a clear manner.
I teach automotive as well, My fav part is when you have a kid in class who thinks they know something,then ask a question to far in advance for the class to understand you say... We'll get to that.... LMAO
Hi Marcus. could you inbox me please.
I realize now that I was that annoying kid in class.
@@fahrvergnuugen Myself too, yet the more I learned the more I wanted to know, as quickly as possible,therefore missing some basics.Also was removed from some classes for using your Title?name etc, as an alternative to the other F! word the other kids used every where? even my german language teacher agreed I was using Obscene language when I asked the meaning.as (a feeling you only get in a volkswagon ) V.W.ad campain as seen on t.v.? So what is worse,?(U.S.Child trying to askmeaning of pfarfhegnootin or teacher calling me (dumbdeflagenchisekoff)?Worked on many vw,s over the years and dont know if i ever felt the farfenthingy or not, yet I am well aware I HAVE been a Dumb Flipin shit head!!!!!! Almos sorry I peesd off the spelling dude tto!Have fun friends, and LEARN? something, otherwise your entire future is ????????????????????????????????????????????????????????????
There’s always one kid in the class like that!
MEC 3078 S HOWS THE GEAR ASSIGNMENT GOING :D
Awesome training video! Many years ago I had a 1982 Capri with a manual 5 speed that I rebuilt. (Just a few parts, it would not stay in gear.) But automatic transmission operation was always voodoo in my mind. Spent an hour watching this video, and it made the operation of an automatic clear! Thank you professor Kelly!
Excellent description of the works. Also like the fault finding section.
before today, I thought automatic transmissions were magic.
crazy right?
They should call the ring gear the asteroid belt
Clever. lol
I have never watched a better video then this.
THANK U SO MUCH ❤️
Tried watching other videos to understand the automatic transmission but this video explains it perfectly, thank you! Very fascinating
Id love to meet this girl. Or be dreaded of working in a shop with her. She would tell you how to do everything but never be able to actually "do anything"
sohcdemon 😂😂😂😂
I mean kinda annoying that she won't let the man do his thing but that comment is harsh lolololol
Ugh tell me about it
"Its harder to turn? Then how does it make better fuel economy?"....She is the type that sits in the front of the class, takes tons of notes, asks tons of questions about everything and does mediocre on the test because they spent hours going over whats going to be on the test and doesn't actually understand whats going on.
***** Even worse is the kind that does this and then starts embarrassing themselves and trying to find fault with you for every little thing they can think of because they really are too stupid to understand what is going on, can't face the fact that they really are that stupid, and try to find any and every fault with the instructor as if that is going to get them the score they desire. They don't even try to mentally apply themselves to what is going on but that is the instructor's fault too in their minds. Usually see this with female students and it is truly pathetic. The male students that do this will try to find fault with the instructor as well and after seeing that there is no hole to run into the endzone with in blaming the instructor for them being natural dumbasses; will then proceed to get private tutors and or resort to cheating but tend to have a little bit more self dignity in front of their peers than their female counterparts.
We really need to get back to developing true talent when it comes to science and engineering. If you can understand the simplicity and common sense logic of the scientific thought process after being exposed to every teaching technique possible then good on you. If you can't; then there is no shame in that, it's just not something for you. There are other things you may be good at and should try pursuing.
***** Agreed.
LOL that knucklehead was driving me nuts all video......he kinda brushed her(?) off on that 1
Actually, I bet she is at or near the top of the class. Yes, she comes across as a bit of a know it all, but sometimes smart people have trouble damping their enthusiasm and not showing off. Plus, I bet as a woman she feels she has to work twice as hard to be accepted and recognized. Of course, in reality this is actually working against her because most of the guys will feel threatened that a woman might know more then they do. Hopefully she will figure this out sooner than later.
It's seems like she's busting her ass on this course. She even cited the TSB (Technical Service Bulletin) of another vehicle when they were discussing troubleshooting of the clutch paks toward the end of the video.
I thought the instructor handled her very well by letting her ask her questions and answering the ones that would be informative for the whole class, but also ignoring her a bit so maybe she gets the hint to stop interrupting quite so often.
Great video, btw! I finally understand how an auto tranny works. Seeing the parts working together really helped me understand this easier.
I know right, its called the car already has a bunch of momentum built up, dummy!
I'm 20 years old which currently studying at an acedemy. You taught me so much and now I finally understand automatic transmission(still learning). Thank U so much. I've struggled a lot but this video help so much once again thank you.
Thanks a lot... Amazingly clear explanation on how the different parts rely on each other to produce the required output in timely manner...
As a curious layman always befuddled by the planetary gear system in auto-transmissions, let me say, this is the best explanation I've every found. Compliments.