What Is Rev Matching?
HTML-код
- Опубликовано: 2 фев 2016
- What is Rev Matching? Manual transmission driving. Why is it necessary to rev match? What are the benefits of rev matching? What happens if you don't rev match? Driving a 2016 Nissan 370Z which features automatic downshift rev-matching.
Related Videos:
Manual vs Automatic - • Automatic vs Manual Tr...
Clutches - • Clutches - Explained
370Z Nismo vs Mustang - • Nissan 370Z Nismo vs F...
370Z Nismo Review - • 2016 Nissan 370Z NISMO...
And don't forget to check out my other pages below!
Facebook: / engineeringexplained
Official Website: www.howdoesacarwork.com
Twitter: / jasonfenske13
Instagram: / engineeringexplained
Car Throttle: www.carthrottle.com/user/engi...
EE Extra: / @engineeringexplainede...
To help create more videos, check out my Patreon page!
/ engineeringexplained
NEW VIDEO EVERY WEDNESDAY! 
Авто/Мото
this guy carries that clutch disc everywhere
some air blew out of my nose..hahaa
yeah takes it to bed when he bangs his chic too
haha 9GAG
MrPeanutsy 😂😂😂😂😂😂
MrPeanutsy took it to school for show and tell. taught rev matching
how do I rev match my 14 speed bicycle
you need a short throw sausage
You need a short throw chain
I subscribed to you
only 14 speed? mine is 21 speed.
@@metalmario722 mhmm
Great! I now know how to rev match... Now all I need is a car
Prranjal Shrivaastav NFS? Are you kidding me?!
silvergbasp13 or assetto corsa
Great! I have a car. Now all I need is Dlovee.
...with a manual transmission though.
I still don't know how to rev match. I only know what rev matching is and how it works.
*Girl sitting next to him at a bar*
"Come here often?"
Him: "Yes. Hey would you like to hear a quick tutorial on how to rev match your vehicle while downshifting gears?"
*pulls out a pressure plate and clutch disc*
Girl:
*pulls out a helical and straight cut gear*
@@nevagibup oh yeah baby, align those rotating gear sprockets with my input shaft.
Hahahahaha
@@scorpionwins6378 oh jesus 😂
I’d put out, just sayin
starts to explain why rev matching is important
pulls out a pressure plate and a clutch disk *out of fkn nowhere*
The way you phrased your comment made me laugh out loud :D
+Casual Shiba haha
+Casual Shiba haven't you saw the video where the expains what he has in is Integra? I'm not surprised :D
If he pulled s whole disassembled trans out the passenger seat then my mind would have caught fire
+Casual Shiba talks about rev matching lets the car do everything
Her: "come over"
Jason: "can't"
Her: "i upset the balance of the vehicle"
Jason: *downshifts*
As a Jason I can confirm this
ICANTTBREAAATHEEE
@@unclefrank322 but your nickname...
that’s the worst name a person can have 💀🤡
@@nurko8463 Jason Voorhees would like to know your location
nobody’s doing it like this guy, this man took the time to pull over, lift his engine and transmission out, take out his clutch, get back in the car and show us! 1:47
😂😂
More over, he even cleaned all the pieces and himself first, that is true dedication.
I don't get why instructors don't teach this. It's almost vital.
They do... But maybe not in the United States of Freedom ;)
Its not vital either its vital in united states of freedom between some bunch of internet kids who didnt see a manual car in their life
Sadly, no one here likes manual transmissions :(
I love manual transmissions, even if I have to go through dead stop traffic with my stage 3 clutch.
Don't know if it's a universal thing but a stage 3 clutch on my car handles around 400 to 600ft/lbs of torque, it's a leg workout when stuck in traffic.
Engineering Explained - helping guys impress girls with their knowledge of cars since 2014 : )
+F3ARL388 Ahem, 2011* :)
+Engineering Explained lol
+Engineering Explained have you changed your car or is it still the subie?
+F3ARL388 What "girls" are you impressing with this info?
+Engineering Explained That's a lot of "hello everyone and welcome"
2:22 that grip tho
+Vicente lerdo female ejaculation explained...
+Vicente lerdo Yep! one for the front, two for inside, and one for the rear... works every time!
+Tee Mann hahahahaah to the top with that comment
+Vicente lerdo Thanks bro that made my day LMAO.
Just a few vigorous up and down motions and he could make that clutch orgasm. My ninja is a player, I know he is.
+Tee Mann ROFL. Best comment ever
So basically its like bicycle gears, the first gear is super easy but you can't go fast, and the 7th is very hard at low speeds but you can go faster.
Yeah but don't start in 6 cause unlike you, the engine will stall 😂😂
@@codcade Oh with my chicken legs you will definetly stall
@@thatguywhodidntgetthejoke1094 😂😂😂😂😂😂😂
Torque...
Thank you im faded and u just explained how gears work to me :D
These videos are informative even for an experienced driver. you've earned a subscriber and a like
+Kang The Mad thanks for subscribing, and for the like!
Yeah, same here! (-: Nice job explaining everything. Keep'em comin!
I accidently had my parking brake on & drove maybe 5 ft, without realizing it was on. Will this mistake ruin my car ?
+Kip William nope. itll burn out your rotors though if you do it regularly.
2WheeledWanker ! You will have a car like I just bought used with paper thin rotors, nothing but metal on the break pads left and a seized break piston nothing you can't fix yourself with 100$ of parts and an afternoon but still annoying to deal with especially how easy it is to avoid
If I paint my pressure plate red, then are the cops more likely to pull me over?
+InternetzSpaceshipz nope, you;ll gain extra BHP though.
+InternetzSpaceshipz nope, you;ll gain extra BHP though.
+Darren Boss but you will lose some torque.
+InternetzSpaceshipz In the State of California, you will.
+InternetzSpaceshipz Yes Yes and Yes! also if you put some racing strips and decals you will go faster and get away from the cops guaranteed....damn good comment i like your humor.
One more point to add is that its application is not just limited to racing. Bad weather conditions can also cause the rear to "step-out" if one is too aggressive with a downshift and you don't rev match. It's a good skill to have. Downshifting in bad conditions is a good idea to prevent lockup from ABS issues. For example if all four wheels stop turning on ice because the wheel speed indicator detects no motion from the wheels ABS can be ineffective. Downshifting will prevent lockup in those conditions and keep the wheels turning as well.
Absolutely, just as useful for public driving for the life of your clutch and control of your vehicle. Great for engine braking.
+Engineering Explained How does rev-matching occur with a multiplate clutch?
+vidurc Good point. I once downshifted without rev mathcing in snow and the back end wanted to spin around. I managed to control the car but it gave me quite a scare at 60km/h :D
Makedeth My automatic does that when I'm using shift lock. Only solution is to equalize revs quickly so it doesn't loose traction completely.
+vidurc I had a manual RWD BMW back then. My options are to either rev-match, or let out the clutch much slower than i did then :D
Just wanted to say as someone who is new to the world of cars and wants to educate themselves, your videos are by far the best I have ever seen and making this understandable but also with the perfect amount of technical explanation. you rock.
Hi there - great video with a fantastic explanation of why rev matching and the heel-toe technique are important. Thank you for that fantastic information. I love the part in the vehicle, although I suspect for the less mechanical inclined, those parts could potentially be off a space ship! 80) All the best, Cheers Rick
as someone non educated about cars.. this video made 0 sense. too technical, and too much talking
@@itzzzdns9589 as someone not educated about cars, it made perfect sense and was very clear lmao
@@itzzzdns9589 don't worry once you get used to driving manual it will make sense 💕💕 it's easy
I Rev match all the time and it's amazing when you get it perfect every time. Gf still doesn't understand though
True. The perfect downshifting rev match is so satisfying.
Gf are always a hopeless situation with math!
Weirdly, I've always done this even though I've never heard of rev matching. Just noticed that the right amount of throttle during clutching helps smooth downshifts but never thought to wonder why.
I'm a biker, and I'm finding that these videos are explaining a lot of the questions I've had watching Super Bike racing over the years, and helping me with my own bike and car experience. Thanks dude! :)
I'm about to buy my first manual transmision car, so I've been doing some research on how to drive one. Your explanation on why rev match is a thing is perfect! Thank you and great job!
You're gonna love it! :)
@Miguel Mojica Did u enjoy manual ?
the first thing you need to understand is understanding
best line ever !!!
So I already know what rev matching is. Now, how do I rev match then?
What he just said.... adjust your throttle to match the engine RPM to the Trans RPM when you down shift.
ie 2000 rpm in 4th , press clutch , shift in 2nd , tap gas to 4000 rpm , let go of the clutch , voila ; smooth downshift.
+Ez3k1e7 do you dump the clutch after blipping?
***** If you kick it and the transition is smooth you re doing it right. I tend to be gentle with mine and just release it fast but to each his own .
While the clutch is down press on the gas pedal to rev the engine to the rpm needed, then release the clutch
how do you know what the Trans RPM is
I kept using rev matching with my old car when its transmission was nearly dead. I continue doing with my new car. Most people don't understand why I rev up the engine at backshifts, neither after I explain, so only few will utilize this knowledge pearl. Your video is great!
Thanks A LOT for these videos! I want to learn a bit more about cars than my driving licence courses offered me and these videos are a huge help! I suspect that this is also the case for most people watching. Keep it up!
watching this vid reminds me of just how much more you have to pay attention to what your manual car is doing and how to make it perform the best. you are continuosly drawn into thinking and making decisions, i love it. that no matter how good and awesome electrics will be, the na manual ice will always be more involving and interesting to drive.
It's creating better drivers too as you're constantly more engaged with what the car is doing, it's less boring and sleep inducing so you'll be more alert.
instructions unclear. got a dui
Bud it rev matching not drink matching
AHAHAH
I really like your more practical videos where you explain stuff from the driver's seat. Keep making great videos! Thanks!
Thanks for this video. Just bought my first brand new car which is a manual. All these little mistakes I find out I'm doing with previous cars. Now I can fix thanks to this channel.
I'm planning on purchasing/driving my first manual car this spring... It would be cool if you made a short tutorial on how to drive stick shift, along with some basic fundamentals. I know some exist on youtube, but I think I'd like your style of explanation much better. Do it!
Lol
Good videos Friend. I have 2 additional tricks that I use for matching RPMs. One is to look at the angles between the Tach and the Speedo. In some cars, those needles might climb in parallel in say 4th gear. So by predicting where that tach to speedo angle difference is going to be for the gear you are going to shift to, you can make a smooth gear change by being there ahead of releasing the clutch. The other trick I use for selecting a lower gear (in anticipation of an overtake) is to holding the throttle position as you depress the clutch which will bump the rpm by almost exactly what you need for the next down gear, or actually squeezing it a little if you are double block shifting. Send me a message if you are interested in a better description. Would you consider doing a video on toe-and-heel (racing technique)? thanks for sharing.
With some of the older standard vehicles I've owned over the decades I've practiced rev matching to the point where I don't have to use the clutch at all except to start from a dead stop. It's not something to do all the time, but when you get to know the vehicle to that point the clutch-assisted shifting is so smooth - know your speed and hear/feel the engine revs and it's like the process is like an extension of your body. Just got back into a standard after too many years in the automatic wilderness and haven't yet felt the need to try clutchless - manually shifting was easy and natural. Figuring out what all those controlls sticking out from the steering wheel column did, now that was another matter.
Or on old cars, that was very tricky, you didnt have synchronizatios so if you updhifting you pít clutch neutral realse put clutch put gear, and for downshift matce the revs cause if not or you did it wrong you can hear the transmittion slipping and you can broken everything down very easly
This was SUPER helpful because I literally had no clue what Rev matching was, but I'm learning to drive manual and EVERY video is talking about rev matching...lol. Thanks for making this make sense!
Or on old cars, that was very tricky, you didnt have synchronizatios so if you updhifting you pít clutch neutral realse put clutch put gear, and for downshift matce the revs cause if not or you did it wrong you can hear the transmittion slipping and you can broken everything down very easly😊
Make a video on how to properly rev match
Best explanation video on rev matching. Thanks!
Thank you 🙏🏼. I have been looking for a video explaining rev matching but i wanted see how the mechanical parts of the car work as well because with out it, it confused me why you needed to rev the engine before releasing the clutch.
Finally I know what the use is of rev matching. Thank you.
But yeah, my gas pedal isn't positioned to do this. It's much deeper back than the brake and clutch pedal.
Screw all that. I put my car in neutral and just roll lol.
Even tho i dont always put it in N, i can see where u comin from brotha..! : d
this is dangerous because u lose control over your car. also braking with engine is more efficient and is saving ur breaks
disagree. breaking with your breaks is better than engine breaking. brake pads are easier to replace.
hihtitmamnan r/woooosh
... and maybe you can give the neighbor's kids 5 bucks to push you up the hills?
Thank you very much for your awesome videos Jason! If possible, I would like to ask you the following question:
When you change the OEM flywheel to a lighter one, it´s easier to rev up the engine i understand because it has to move less weight and also it has less rotational inertia due to the aftermarket one being more weight shaved on the outside (i believe). For the same reason it revs down faster.
Because the engine/flywheel revs moves faster, would you say a lighter flywheel improve your gear change times, since you have to wait less time to match revs?
Thanks in advance!
Kind regards
I've never driven a manual and was really confused on why people do rev matching, this was a great explanation thanks :)
Ignore what some people are saying like "you didn't teach how to do, you taught what is"
You did explain very well, keep it going!
*For anyone who just wants to learn how to do it. Feel free to add constructive comments/questions. I'll edit if necessary.*
Letting the clutch out slowly means you are slipping the clutch for a long time. The clutch does not take wear when it is fully engaged or disengaged, but the time in between is where it receives 100% of its wear. You can tell how much wear your placing on it by the amount of time it takes to shift smoothly. Your clutch is made to handle a ton of wear so don't sweat it if you ever had poor habits in the past.
When I say fast, I'm only talking about the clutch release. The total amount of time it takes for your car to shift in and out of gear is irrelevant. Different car's naturally have different paces for on both up and downshifts.
Perfect Shift - Really fast, No jerking
Great Shift - Fast, little to no jerking
Good Shift - Sort of fast, Little to no jerking
Good enough - Not particularly fast, Little to no jerking
Poor Shift - Slow
Drive down an untraveled road at a safe, normal speed in a lower gear then normal. We'll say 3rd gear at 30 mph.Take note of the speed and RPM. Now shift up so your in 4th. Now downshift back down to 3rd the exact same way you normally do, but instead of letting off the gas all the way keep on it just enough to raise the RPM's close to where you were at originally. You just need to get close and your clutch will do the rest when you release it so don't over think anything. Practice will make perfect over time. When you're raising your rpm's up to the appropriate level, your not so much applying any torque, but more just resting your foot on the petal just enough to get the job done.
When you are practicing like this, you can always aim a little low if you don't intuitively know your RPM's for each gear yet. It will be smoother, faster, and add less wear then your original method anyway.
You don't have to look at the tachometer to know if you were RPM's were too high, or too low, in fact you don't need it at all. If the car pulls you back in the seat they were revving to high. If you feel you are being pushed forward you revved a little low. Everything can be done by sound and feeling assuming you can hear your engine.
So even a good downshift is better than slowly letting the clutch out? Even if I don't make the car jerk?
that explanation it’s actually really really good and clear; no questions at all
so underrated thank you so much
@@nujabes7 I bump this 6 year question to ask the same. I normally don't experience carjerk while downshifting because I downshift when the car is at less than 2000 RPM. My dad that has over 40 years of driving experience and is actually really good at driving, and doing everything to keep the car wear at minimum hasn't heard about this before, like he taught me, very, but very rarely I feel the car jerk when he downshifts, and he does it a lot, because he's used to engine braking (when you're about to come to a stop, you downshift little by little according to the speed of the vehicle until you eventually stop)
Under these circumstances, it is still better to downshift?
Love this comment, I wish this information was in the video too.
Let's be real here, the first time some of us even heard of rev-matching was from heel-and-toe downshifting from Initial D.
im here cuz of senna driving the NSX at suzuka :/
Your explanations/concepts are easy to follow given I have zero experience in mechanics or engineering. (Just happen to love cars and a natural curiosity on how it all works.)
Came across the terms ‘rev match’ and ‘blipping’ and what it’s used for, but never a true explanation on how (and mostly importantly why) it should be done.
Your demonstration with the physical clutch really brings the point home. It really helps the visual learners out there to understand how it all works in relation to each other. Anywho, thanks for the helpful video!
Hi guys! I think your channel is great and really helpful. I would recommend you to make some virtual animations about those transmitions and clutches interactions instead of puppeting them inside the vehicle. Just a comment, your channel is fenomenal!
You still didn't really explain how to do it, just how it works
It's "What is rev matching", not "How to rev match".
Also he kinda did at 2:14
Does "blip the throttle" mean Tap the throttle?
Depends on the disparity of RPM. If you are at 2k RPM and downshift 1 gear, yes a tap would suffice. If coming into a braking zone at 4K rpm, then a larger harder throttle hit would be required to achieve the RPM required.
That's whar the title is
Americans : clutch?
LOL
Ever heard of a muscle car?
@@chrischeek2963 This is funny but 90% of us take care of out cars and DON'T HALF CLUTCH. yea I have muscle car.
Ok, so what's your point?
@@chrischeek2963 saying not all Americans just "Don't" take pride in our manual vehicles.
FINALLY - just saw this (amazing) and never had a clue why some were so proud in their videos of "heel toe". Learned to drive on a street bike, downshifted alot, never worried about wearing the clutch or upsetting the motorcycle! Great video, I will no longer worry about the pedal spacing in prospective new rides. ;-)
I've always done this naturally, but it's nice to have it articulated in a manner such as this.
"rotates quickly very slowly"
Wow ...just Wow
I have never been more confused in my life
Brian Guzman same 😪
Just watch a vid on how an automatic transmission works. Then this won't be anymore...
Wejustmight die it won't be confusing anymore because you'll just get an automatic and to hell with rev matching
Brian Guzman
He’s overcomplicating it way too much.
Basically, before you downshift, you give it some gas so the car doesn’t engine break too much.
You rev up the engine to where the RPM would be when you put it in a lower gear.
Just like the auto does when you kickdown. It puts you in a lower gear without any lag because you’re helping it with gas. (Might not be completely academically right, but to make it easier to understand).
Was that a good explanation?
J Gripen x
I appreciate the visuals, really helps me understand what I’m doing
Amazing explanation in little time. Knowing how things work is the best way to understand the subject
+Engineering Explained, Good video. What about upshifting? Wouldn't the opposite hold true that the engine is spinning faster than the trans at the higher gear? Or do they both spin at the same speed once disengaged (while shifting), then more or less match RPM once the higher gear is engaged?
Upshifting more than one gear you want to let your revs drop from what I understand. Hitting 2,500 rpms on 2nd is usually perfect for upshifting to 3rd, basic manual procedure you know? But hitting like 3,000 or 3,500 in 1st is usually perfect to upshift up to 3rd gear as long as you let the revs drop a bit before re-engaging the clutch. Otherwise you lerch. I’m a new manual driving, I’ve never really had much problem with an upshift of 1 to 2 gears, I think there’s more thinking involved when you shift 3 gears, but that’s also really aggressive driving. You’d have to be in super high revs and let it drop down before bringing it from let’s say 2nd to 5th. I’m no engineering explained, but that makes sense to me, usually going from a higher spinning, low gear is seem less when going into a slower spinning, high gear.
I swear I have watched this video over 100 times...
ziggy Z I wasn't being deragotive cry baby.
I believe devin was paying compliment to the video author, saying that because he enjoyed the video so much, he must have watched it over 100 times. I think you took his comment to say that he has seen videos like this over a 100 times and therefore isn't contributing anything. Not sure why I took the time to say this lol.
......and still don't get it
Good to see your channel doing great mate. Always nice to see your stuff
Love the demo with the clutch disc! Makes sense now, thank you!
OK, but what is the relation to transmission synchronizers? I was always wondering what is the correct order:
clutch in- shift down AND blip - clutch out OR clutch in - blip THEN shift down - clutch out.
Second way always feels better - gear lever just seems to get sucked into lower gear smoothly.
(I know this is an old comment but still..) it doesn't matter when you blip, as long as you blip while holding the clutch. It's better if it's done seamlessly tho. You just have to match your engine to the transmission speed.
Can you discuss why The four-cylinder sport bikes sound the way they do thanks?
+Gage S. Because of the exhaust, air intake, high RPM and the fact that the engines aren't insulated like in cars.
Lighter components due to smaller size hence the ability to rev high and then you combine that with the short exhaust and you have a nice high pitched note.
+Dick Pickles Actually, it's because of the firing order of the engine. It's called a "screamer" configuration. There's also a "big bang". He made a video on these two firing orders. American V8s are "big bangs", same goes for many Moto GP bikes and the 2009 and newer Yamaha R1. Ferraris and pretty much every other inline four is a "screamer".
Also, inline fours in cars are all screamers. They sound different than bikes because of the reasons you mentioned.
sport bike exhaust + 4 cylinder car = profit.
All I needed was to hear the word blip. Never heard of revmatching until today, always new what bliping the throttle was though. thanks!
You’re an awesome teacher btw and explain things very well. Learning a lot here thanks!
can you plz explain engine configuration advantages and disadvantages
+Basil Akasheh This playlist will satisfy your curiosity! ruclips.net/video/yRWL9czmk_E/видео.html
+Engineering Explained explain Scavenging in SOHC ??
% of engine power sucked by balancer shaft,fuel pump,HVAC unit,lights etc,in an AVG. Petrol engine CR 15:1
+Engineering Explained I think u need to bring out the white board for this one bro no one really understood ur vague explanation on rev matching
How do you calculate the rev match that you need? Like if i'm going in 4 with 1000 RPM how much do i need to rev up the engine to be matched with 3rd gear? The same when I'm upshifting?
+RyderGaming Drive your car in the different gears at different speeds, this will let you know. Might take a bit to learn.
Engineering Explained Thanks :)
+RyderGaming On flat ground it should be the same as in 3rd. As in if shifting from 3rd to 4th brings you from 3000RPM to 1000RPM then you should rev to 3000RPM if youre downshifting from 4th to 3rd. Itll change depending on load
+FlyingAero Hmm, why would it change? I think that speed of the car is relevant only to RPM and gear. No matter what load you have, if you are on, for example, 3000 RPM and 2 gear you'll drive at 60 kph. If it's different than it means your clutch is slipping.
+RyderGaming What Jason said, basically. It all comes with practice. It depends, obviously, on the gear your shifting to and the according RPM and also on how much your fly wheel weighs. A lighter fly wheel means faster rev drop so let out the clutch as fast as you need to. I recommend trying to rev match when coming to a stop to get a feel for it. Best regards and good luck!
I had no clue what reviews matching was but then I realized that I do it every day
Just bought my first man tran car. These videos have been very helpful. Thumbs way up!
This guys wife at house parties must be like "Oh christ, he brought the clutch again. Honey put that away! Everyone needs a break after last weeks fuel injection lesson."
bwahahahhaahahahahahaaha
I know I'm only 14, but I have a good idea. Wouldn't it be great if auto factories start including a secondary RPM gauge in the middle of the primary RPM gauge in manual vehicles to show the RPM of the pressure plate so that rev matching could be easier?
You mean the rpm of the transmission imput shaft and you would need to be in the gear you're changing to. By that time I've already bliped the throttle. When you start driving you'll find that rev matching is extremely easy. After 2 or 3 miles in a new vehicle I don't even have to think about it.
Pressure plate is bolted to the flywheel. Flywheel RPM is always the same as engine RPM. Interesting idea. However the process of rev matching a manual transmission for downshift should be done in a double clutch fashion. This means you would need a gauge that can predict what gear you are trying to revmatch while in neutral. I guess it would be possible to revmatch after downshifting (I never do). The RPM indicator could be on the input shaft of the tranny. To be honest though; with practice you get natch it up close enough. The whole maneuver is so quick you wouldn't have time to figure out the two needles. Pretty cool idea though.
+Arthur Lejawka Thx!
What about some scales about which speed it matches in each gear around the rev counter? Would be cheaper than a second gauge and would also help double clutching
Thank you for this great video, it explains beautifully the underlying concept.
Thank you
best explanation (in two minutes) that I found after watching ~20 videos on the matter.
thanks so much!
Wow enginering explained i just learnt how to get girls attention and them in my car with this, thank you.
Helping nerds catch babes since 2011! ;) Not really though.
+Engineering Explained :P
LOL
This is the best and shortest explanation of rev matching on RUclips.
I'm doing this mostly basing on "engine sounding right". And you learn instinctively when it sounds right because when you do it wrong - the car "jumps" back or forward :)
Serious question does matter what kind of gas you put in your car? Like 370z?
Yep, search my channel for premium fuel there are some comparison videos.
My rx7 refuses to accept rev matching smoothly so it's better just to downshift late lol
+Ty U. You're either revving it too much, or not enough. Any manual gearbox will accept it if it is done correctly. Of course, heel and toe shifting is preferred for downshifts so your braking can remain smooth while you shift.
+aussiebloke609 hah if you shift it just wrong either the driveshaft or the diff makes a huge clunk so i just found a way around that
+Ty U. I've had that myself. It usually means either your drive shaft joints are getting old and have some freeplay, or the thrust races in the gearbox are worn (or possibly - but comparatively rarely - one or more of your splined connections are wearing.) That clunk is from taking up the last when power is applied. matching revs more accurately will help, along with being a little bit more gentle with the clutch, but in the end, the only fix is to replace the worn items. I guess it's possible for the diff to get worn in the same way, but since the ring and pinion are preloaded, that would be pretty rare, I would think. Never seen one that bad before.
Remember, all these parts should have a little play in them anyway, so a sloppy shift will still clunk a bit...but the closer to factory spec they are, the easier it will be to shift smoothly and quickly.
+aussiebloke609 yeah I know I'm super gentle with it, it's a 33 yr old car with 151k miles and no service history lol
+Ty U. spider gears
I was wondering about this. Again, thank you. I wish I had found your channel much earlier.
I only down shift coz I love to hear that v8 down shift sound, amazing it is
can anybody give me an example of this, when i drive stick i really dont think about these things i just do them. xD when i switch to a higher gear, i let go of gas, press down clutch, switch gear, let go of the clutch slowly while giving a bit of gas. now when i downshift i let go of gas, press down clutch, downshift gear, and let go of the clutch slowly without giving gas.
+poisoncobra7 That is correct, however what the video is explaining is matching the rpm to the speed you doing so the up or downshift is smooth and the car continues to accelerate correctly. Let's say you are going 60mpg and are in 6 gear but you want to come to a slow, by pressing the brake and taking your speed to 40 then selecting 4th gear will make it smooth and have no wear on the clutch alas 30-3rd, 20-2nd then 1st when you are coming to a stop it should all be a smooth sequence same as going up a gear, go with the revs.
+whoiselijah okay, what I do is, when i get into a city i lower The speed and switch to The appropriate gear for that speed. is that rev matching ?
+poisoncobra7 Yes, because when you change, the clutch disk is spinning at the same speed as the pressure plate so the connection is smooth and gives minimal wear on the transmission it also gives a smooth change and the revs should adjust only slightly.
+whoiselijah cool, thanks for the help, appericitate it !
+poisoncobra7 You only do rev matching while down shifting if you wish to slowly brake your car using your engine (or add braking power if you're a "racer"). A good way to use this for everyday drivers is before a steep hill going down, you can release the clutch, give a little bit of gas and downshift to keep yourself at the speed limit without using brakes.
i think this rev matching works for race cars...how come no driving instructor teach us nothing of this...the point is that whit a normal street car you don t down shift from 4 gear to second if you want your clutch to last for some years.example:you go 70 km per hour in 4 gear , you raise your foot from the gas pedal,your speed will go down,put in in 3 gear and slowly release the clutch...thats how you do it...buy do it like these experts teach you in one year you will need a new clutch....for racing is ok but thats all..
+calin vasile We just use it to slow down without using the brakes.
+calin vasile I wouldn't go 70kph in 4th anyway. Passing a car on a two lane road would be a scenario where rev matching makes sense, you don't really want to slow down before attempting a pass. I can't remember ever seeing passes like that in the US tho. But its pretty common in Germany.
+calin vasile Because 99% of the driving instructors cannot perform rev-matching themselves and it's viewed as unnecessary. Here in NZ it is often viewed by many ordinary (sub-standard) drivers as 'street racing' behavior, alas it's the only way I drive, being mechanically sympathetic.
+calin vasile You realize not rev matching kills clutches right? Rev matching actually saves the life of a clutch because it slips less. When you don't rev match the clutch has to slide on the p plate and speed up the engine, resulting in clutch wear. If you rev match the clutch and p plate are spinning at the same speed with less slipping. Any time you are slowly releasing the clutch to make it smoother you are wearing the clutch. Its the same as holding your car on a hill by slipping the clutch. It causes wear.
+calin vasile A driving instructor has a hard life being chauffeured by random people with mostly zero to below zero skills which is something for people with reeeeeeeeeealy strong nerves. I cannot imagine a driving instructor being abnormally active to teach people more than they need to success driving school. The mayority would miserably fail under the ammount of information.
Take the driving school as a 1st lesson on "how it`s done" and learn more later. Just like in a regular school. I was never taught for example about taxes like where to pay, how, why, when, how to sell or buy things that are complicated to deal with like houses and other property that includes a lot of paperwork where a small mistake can cost you money and ownership at once etc etc.. but I was taught how to graphically demonstrate X over Y when something changes the equasion. That brought me rreeeeeeeeeeealy far and made an outstanding point in my CV :D
Rev matching doesn`t need to be done aggressively. You can do this slowly, casually just to support the transfer of rotations. It will allow you to drive smoothly as if you had only one big gear that does not need to be shifted at all.... or as my driving instructor once said "no, it is not important to let everybody know that we just changed gears..."
Thanks so much! I never knew dat the clutch matches the speed of the transmision
Absolutely great video done by a true geek like myself. Used this vid to explain the clutch system to someone
shouldn't you learn that when you train for your license in the first place? To know how to shift is essential right from the beginning.
+Behemothokun But seriously how relevant is that for 99% of everyday driving? Not. A. Bit.
+Sebastian Kauschke
Exactly. Clutches don't wear out that easily even if not shifted correctly let alone without rev. matching.
Me and my brother used to play around often with an old car of my dad, (it was probably something like 30 years old). Sometimes we used to shift gears without pushing the clutch and still it (the clutch) outlived the car.
Rev. matching, double clutching and stuff like this is right in theory but irrelevant in 99.9% of the cases.
Sebastian Kauschke It's relevant for everyday driving; Like for every time you downshift. Even my mother does it
+Behemothokun epic!
I bet she also powershifts when hitting the redline.
Mircea Dogaru don't be stupid. -.-
All I'm saying is that something like rev matching is completely trivial
"370z knee-smow" LOL
How’s it actually pronounced? I’ve heard a few ways
@@jonathandunlop6342 Niz Mo
Hello Jason! How is it going? I just started watching your videos, and they're awesome!
However I wanted to ask a question about revving and specially hitting red line or rev limiter.
You see, I'm learning how engines work and just love the sound of rev limiter.
Question is.. does hitting rev limiter can cause damage to the engine?
Love your videos, I am learning a lot! Thanks and have a great day!
Great video. Another important factor in rev matching is to minimize the wear on the synchromesh.
Or on old cars, that was very tricky, you didnt have synchronizatios so if you updhifting you pít clutch neutral realse put clutch put gear, and for downshift matce the revs cause if not or you did it wrong you can hear the transmittion slipping and you can broken everything down very easly
Its the only way to drive stick. If you not rev matching and heel toe downshifting your not driving your manual properly.
+Blake's Garage Unless you drive a non-GTI Mk7 Golf which has the brake pedal raised towards you so much that you can't the gas at the same time. It's a shame but that car wasn't really made for heel-toeing at all. I still rev match though, much smoother and faster than without.
OhMyKMPR My International Scout is like that you just have to rotate the hell out of your foot.
+Blake's Garage
Im sorry, but no way in hell am I doing that shit at 4 in the morning driving to work. You'll be lucky to see the car in a gear once im going down hill.
+Blake's Garage anyone that says 'drive stick' is not driving a manual properly ;-)
+GTiR23 LOL how about Standard is that better?
Nobody:
Engineering explained: *pulls clutch disc out of back pocket* “so this is splined to the flywheel”
He keeps it on a keychain along with his house and car keys.
Would be great if you can make a video teaching how to up & down shift more smoothly
Short and easy information. It is very easy to understand engineering now.... thanks mate, you have earned one more subscriber !!
How do I rev match my gf?
Rizz her up 😂😂
Why not show us how it is done? talking about is one thing, showing us is another (more useful)... thanks
+radbcc he did... from his gauge you can see he every time he downshifted his car the rpms went higher(appears to be by 1k for his specific car), if your car redlines at 8 and youre at 7 and downshift, you're gonna have a great time. so if you're in 6th gear, redline is at 8rpm, and you try to downshift into 4th from 6th while at 6rpm, you are going to hit redline. Just from watching like 30 seconds of video...
Handsome engineer,well explined in brief you are expert and brilliant..love your teachins and instruction
Most beneficial. Will try to make it a habit to drive with the correct responding revs to gear, to stop engine strain.
I really don't see the need for a casual driver to rev match, unless you're pro racer or pretending to be one. The smoothness when downshifting is different on every car and it depends on how much the driver is used to the car. No need to scare young drivers to press 2 pedals with 1 foot, you can be an excellent driver without doing that.
What you mean pressing two pedals with one foot ? Gas and brake, gas and clutch or clutch and brake? :D
antonio ivanov brake and pressing the gas at the same time is pretty uncomfortable. Again depending on their car and shoes but still.
Are you talking about starting on uphill ? Just use the handbrake m8, simple
antonio ivanov ??? While braking you gotta blip the gas to rev match, that's when you press 2 pedals with 1 foot.
+VoloKin Project don't brake while doing it man. You're not always supposed to brake while downshifting. You can brake before and after. Personal opinion tho!
Aka put it in neutral....
Clear explanation thanks. Question: what are the pros and cons of always leaving it engaged?
When I was younger I always wondered why the engine kept braking whenever I downshifted to pickup speed, because that's what I saw drivers do in the television. Never in my life have I used this technique until I understood it today... wow
when im bored i shift without clutch just using revmach.
Someday will be your sad day because of this.
Very useful skill. I've had to drive 4 cars with locked up clutches. Once in ski traffic on I70 through the mountains. Just understand that your sincros are working very hard even if you're very close.
Abdullah Bal why?
+Colin hemligt It puts more wear on the internal components of your transmission. Syncros specifically.
+talltomrich1 whell do it right and there is not much stress
what happens if youre on the highway going 60 mph in 6th gear and you want to quickly pass someone?? dont you have to downshift to get more torque?
isnt that a disadvantage to driving manual? in an auto you can just step on the gas with good torque at high speeds
+Master Mo Auto's downshift when you step on it in a situation like that aswell. With a manual you're doing it manually and it's the same process. I can downshift/rev match pretty quick so even on highways I don't really feel disadvantaged. After a while and with a bit of practice it tends to come naturally
mrsametaste
so its just much quicker in automatics.
+Master Mo Yes that is true, but an automatic does the same thing. Usually there is a threshold in the pedal where basically the ecu says 'oh, they want to go fast' and it will downshift and punch it.
+Master Mo lol!
Kirill Kravchuk
not much lag in automatics vs physically letting out the clutch downshifting, getting more torque, then up shifting again in a manual.
not hating on manual but its a drawback. precisely why dual clutch or paddle shifting is primarily used in racing. its just faster than physically shifting gears
Just got my drivers license and I am getting a manual corvette,I am getting it for around 4K.thanks for this vid, now I know what rev matching is and means
Truly an amazing explanation of how it works .
by far the best video I've found on the Internet.