Demystifying Motorcycle Engine Displacement

[@alextaylor8198]

As a ninja 650 rider, this helped.

[@Luigi6995]

I came to watch this video knowing my 650 was slower than the 636 but wanted to see why and how so this video does help

[@orlando00900000]

I bet the Harley riders are banging away at the keyboards lol

[@ervisit7212]

Teaching numbers to the masses great work! I think this will help all the spec sheet warriors. Another thing that throws people off with older bikes is HP gentleman agreements between the Big 4.

[@Napoleon_Blownapart]

Not only that, but the fact that HD still used air-cooled, push rod engines, they are capped in the power they can make without blowing themselves up.

[@rao-foto]

More general since number of pistons per CC motor will affect bore/stroke accordingly anyways. Less pistons (1-2): More low-midband torque, less rpm, less HP, better streetability More pistons (3-4): Less low-midband torque, more rpm, more HP, less streetability

[@彼女も私をパパと呼んでいます]

I used to brag about my dad's Kawasaki gpz making 900 horsepower when I was a kid 😂

[@billyblaze700x9]

Shocked he didn't touch on compression ratio also...

[@jimbrowsing5690]

Adding CCs is the easy/cheaper route to more power compared to adding revs. That's why for example ZX6R went to 636cc when they were no longer constrained by racing regulations.

[@talan7503]

Sometimes it ain't all about that power. I bought a 2024 Ninja 650, and I'm loving it. You can basically cycle through any gear and have power on tap. I've already put an exhaust and air filter on, with the final part being a Power Commander VI unit for it in a couple weeks. My only issue with the 650 from off the dealership floor, is that the throttle is very choppy at low rpms. If you very slightly twist it, it comes on at like 35% power and goes to 100%. All in all, I'd just recommend adjusting the throttle, but otherwise it's a fantastic bike

[@mc.mutthal]

One thing i wanted to add, in India, when talking about the bestselling bikes, with exceptions like the classic and bullet, most or almost all of them are small 125-150 or even 160cc bikes that are absolutely dirt cheap, and also a lot of 200-250c bikes. I say 200-250 because some of them have 220 cc hearts as well. These bestselling bikes come from brands like Hero MotoCorp, Bajaj, Honda, KTM etc

[@keeganroudebush2425]

when can yammie find my stroke length?!?

[@Rossi_dude]

Ay yo pause

[@proudtitanicdenier4300]

tonight

[@yohaan9]

If you're reading this Yammie. I've been lurking on this channel for a while and finally got to buy my first (self owned) bike. A 2022 RC 390 in India (I'm not an RE Simp xDD) and I've got to say you're videos have helped me alot. So THANK YOU :)

[@nightsquidicus]

This explained a lot and I’m glad about that, my choice to try and get a 650 class has been further re assured

[@senorgato1446]

I had to come back because I left at the ninja 650 part...which is exactly why I came here! Almost bought one but its specs didn't seem to add up. Makes sense now.

[@rockstarboxer]

Lol 😂! This was great content . I had to share with a few fellaz trying to get a 650 or 500. I was like okay! Just know we will leave you behind

[@schfiftyfive9680]

It basically just boils down to how much air your head/heads can flow and if your cam/cams can adequately fill the piston bores via head flow. This is why race engines tend to be revvy and why street engines like to thunp. Because their heads and cam profiles are engineered in a manner as to get the desired outcome

[@gregorsamsa1364]

Isn't it also a matter of heat production/dissipation? Cuz longer stroke pistons have to travel faster to produce the same rpms as shorter stroke pistons?

[@samuelwhite9950]

Super Digestible information with Barts Butt!

[@CW_155]

At 2:09 you said 'bore cubed' (which is incorrect) but wrote squared on the formula (which is correct), since its (Bore/2)^2 which comes out as 1/4(Bore)^2.

[@WonkOfWonkyness]

Good to know that the limited cc in Europe doesn't limit me to snail speed.

[@jessevvilsteren]

What cc limit ? I'm from Europe and the only limited license is a 125cc for a 18 year old. As Soons as u get past that and get A or A2 Ur free to go what ever cc u want

[@WonkOfWonkyness]

@@jessevvilsteren Yes. I know. I am from Germany, I still have to do my A2, and A

[@jessevvilsteren]

@@WonkOfWonkyness isn't there a 'code 80' option in Germany? Saves u an exam. I waited until I turned 21 so I could get "code 80" atleast that's what's it is called in the Netherlands. It's an A2 license which turns into a A licens after 2 years or getting the age of 24 wich ever comes first.

[@WonkOfWonkyness]

@@jessevvilsteren Oh. There actually is. Thanks for the info.

[@jessevvilsteren]

@@WonkOfWonkyness saves u a nice penny that can go towards a bike

[@jameswoodrum333]

Bless you sir, carry on.

[@David-lr2vi]

I always keep thinking when watching the stock footage “why are you sitting behind cars, just split down the middle”. Then I remember he’s in Murica, the land of the free where you can go out on a litre bike as soon as you get your licence but your not allowed to lane split. 😂

[@Q_N-]

Lane splitting is dependent on which state you live in. Like in California where it’s so clusterfucked, you’re free to lane split all day. However, in Arizona where there’s more space and lanes to FLY through, lane splitting is illegal. It’s to prevent retards from KILLING themselves 🤷‍♂️

[@DIRTYMIKE420]

Illegal in Texas ....

[@schneecoraxx8689]

some of us indulge anyway

[@gregorsamsa1364]

It's no problem here in California

[@MiLa-xi6qj]

Sorry Yammie I think I'll be failing my test today as you've told me to cube the bore while the screen says to square it

[@Digidi4]

a 500 is closer to a 250 than to a 600 generally

[@toddwebb7521]

That's because the CBR500r is tuned weak sauce to be A2 compliant.

[@spookysverre]

Over here in the Netherlands we drive modified moppets, gotta say 180cc moppet is fun

[@AnwarHaikalRuslan]

250cc bikes exist because of Asian countries that limit motorcycle licenses to 250cc. It's also the reason why bikes like the ZX25R or CBR250RR are selling like hot cakes. Many people are just too lazy to upgrade their licenses, so they just get a faster bike that's still within the 250cc limit. Also, we're just poor, and we view 650cc bikes the way Americans view the Hayabusa.

[@DefenseMyGuy]

Thanks for your perspective

[@Q_N-]

This is the reason why I base specs off torque rather than CC. It’s all about torque baby 😎

[@askilino]

nah, high hp is fun, specially in smaller cc bikes

[@Q_N-]

@@askilino To each his own 👍🤜

[@DIRTYMIKE420]

Less reciprocating mass , equals higher revving engine

[@hoodio]

unit volume of displacement (edit: times amount of throttle) per unit distance travelled on the bike would be a very accurate measurement

[@hoodio]

or actually unit volume of gas per unit distance travelled on the bike

[@zippy7263]

Papa YAM!! Make a video on my bike 😅 2005 Honda CBR 600 F4i 🤘 much love Yam fam!!

[@turnergaudi4831]

I have a ninja 250 From 2012, I just started riding and got the bike for cheap. So far I love it, it’s just a bit slow lol.

[@DefenseMyGuy]

Just be happy to be on two wheels : ) Safe riding

[@danielho5635]

I think the numbers are too confusing for most non-engineers (not me). For the average person, it would be better to focus on: 1. Pros/cons of multi-cylinder engines -- ie 1, 2, 4 cylinders 2. The differences in power pulses in perceived power delivery 3. The difference between horsepower and torque. 4. Power/weight ratio.

[@DamaniJones]

Yup. All of those are what I'm interested in. (Not an engineer)

[@vaishnavprasad7789]

Mistakes 2:02 The equation you wrote down was correct but you said "bore³" instead of saying "bore²" 3:22 in over square engines the Bore/Stroke ratio is greater than 1

[@JohnnyHotdog96]

you had me with the calculator!! man i feel stupid haha

[@christosswc]

Only thing engine size implies with a good degree of accuray is torque. Even wouldn't need to know the number of cylinders.

[@vizualjockey4419]

Not exactly true, although torque does increase with displacement, the number of cylinders will play a role. Two engines of the same displacement but with a different number of cylinders between them will result in the engine with less cylinders generating more torque while the one with more cylinders providing more power. Engine performance as this video illustrates can never be reduced to a bigger engine makes more torque. The configuration and shape of the cylinders plays a very important roll in this.

[@englishsteel-nz6im]

A lot of people with 600 who are like "ive outgrown it, i need a 1000"-- two things-- they don't actually romp the thing out to it's higher rpm capability and they don't hit the curvy roads and track where the 600 shines. I'm even going to apply the latter to the humble 650 lol-- spec sheet warriors really can't ride. I'm in group A at the track and haven't "outgrown" an 09 GSXR 600 and enjoy my GSX-S750 for canyon and mountain carving. Also can have a lot of fun on a 650. Outgrown a zx6r and need an R1 specsheet boys lol must be high end professional racers :p

[@connortaylor1898]

My first bike was a ‘15 ninja 650, was sick… i lost my license almost instantly. It looked exactly like the bike on the thumbnail that drove me exactly to watch 2 minutes of this ramble

[@rishhuwu]

i wish i had paid this much attention in school

[@prockallday]

what about lets say a gsxr750 vs cbr1000

[@J.A.Smith2397]

Ah old calculator elementary humor, love it

[@D34doneTTV]

I guess im still confused 😂 im understanding now that bigger displacment isnt always just linearly more power, but i guess im not entirely sure still why 650 suddenly plummets in power. Ive been looking to start on NOT a racing sport bike, but also not a small 300cc bike. Triumph speed 400 and husqvarna 401 bikes make just around 40hp, when i saw Royal Enfield Shotgun 650 i was thinking it would make at least a little more, more displacement, a whole extra cylinder and it still only makes i think it was 45,46? How/why? Any of those bikes still work for what i would want to do with a bike, so its not the biggest deal for me, im just not understanding the why, even if mathematically or square wise it would make sense

[@Firestorm637]

Great video

[@TTGLKami]

This is literally the video that I needed today.

[@decoyplays7570]

finally yammie daddy did it

[@257796]

I only ride turbo Busas so smaller displacement don't matter to me

[@andrewplace2217]

Feels a little SPITELESS

[@vader5454]

More cylinders means more power.

[@creepychris420]

thank you for that fact i liked it

[@gabedemichele670]

very informative video. i learned a lot!

[@jakefromstatfarm8765]

So is the bore cubed or squared? You said one then the other

[@Cornettd86]

i have a 2022 yamaha r7 and ill tell you this. On the streets i am faster tan the 600 inline fours all across the board. The ONLY time a 600cc is faster is on straightaways above 80mph. The twisties, traffic, short straightwayways i own the 600's all day

[@Cornettd86]

Im sorry, and one more thing....the r7 is a wheelie monster but Im not gonna lie... after 50mph its hard to get the front wheel up

[@mociczyczki]

r7 in slower corners at similar,tires is similar fast tu ss600 class at faster noo cos have worse suspesnion,frame geometry weight distribution asf 👌🏻 in terms of accelerstion r7 need 2,7 sec from 100 to 140 km/h whereas r6 on 2 gear do it in 1,6-1,7 sec so r7 is not slower above 80 mph but in realllity from around 50 mph +/- under 50 mph if rider on ss600 can launch it good they will go head to head 👌🏻 assuming rider on ss600 cant use clutch but just throtle on 1 gear like in some slow track for supermoto os in did r7 have advsntege up to 50 mph +/- assuming ss600 stay on stock gearing and not prepare for specified track topographu with slow corner amd shprt straight if it be preapare for such track than they go head to head to 50 mph even wothout clutch help on ss600 👍🏻go on goxeerbrah chanell there ypu have zx6r vs r7 after 2,5 sec from start zx6r walk away from r7 2,5 sec from start is around 50 mph 👌🏻 your delusional assumption show ypu have no knoweldge in theme just rsndom ride with some people which cant drove its ss600 very fast and this push ypu into wrong assumption 🤭👌🏻

[@mociczyczki]

🤭first of all r7 accelerate the same as ss600 only up to 50 mph aand not to 80 mph 😎 under 50 mph can hold on with ss600 only beacuse ss600 cant use more power for acceleration than r7 or rider end on hees back with bike on him or rear tire lost grip in corner they basically the same fast on similar tires in faster corner ss600 can be fadter due to more stable frame suspension and lil diffrent weight distirbution more sporty beside r7 cant go 250 km/h like in some very fast corner on some tracks but thats diffrent - 3 category corner where just topspeed dont allow r7 to hold on with r6 thats diffrent story 👌🏻anyways assuming we are on track on similar tire where lowest corner speed. on take off corner is 50 mph and rider on r6 is from fastest group ypu have no chance on your r7 👌🏻 assuming thers enough grip for use power advantage in ss600 above 50 mph on 1 gear if thers not enough grip offcorse border from which r6 start walk away be higher thats just up to grip level nothing else 👌🏻 r7 is better daily 👌🏻 on each normal track from moto gp callendar with pro rider on bth + the same tire r6 win on EACH OF TCHAM due to massive power advantage = faster acceleration above 50 mph and lil more stable frame suspension and lil more sporty geometry and weight distribution what transalte into avg 10 sec faster times on each lap 🤭 end of story 👌🏻

[@tjey379]

🤣🤣🤣🤣BO0BIES.. thanks for the education I always wondered what the relationship between a cylinder and the displacement was but now I am schooled, thanks again.👍👍👌👌👌

[@jonathanstout9920]

i've always wondered that fact about ducks. in spanish they're called "feet" bc they have really funny feet. un pato. at least that's my take on it as a gringo that learned spanish for the last 17 years.

[@johnantonopoulous6381]

You said cubed but wrote squared. People need to stop thinking about horsepower numbers they don't mean shit. Horsepower numbers are always peak horsepower at one specific RPM speed. You do not run an engine at one RPM. It's about torque and RPM together, then your taking consideration how and where you're riding which is why sport bikes are not any faster than Harley, Until the Harley has to shift to drop its RPMs and the sport bike doesn't continuously building horsepower. That's why you can Cruise on a Harley in 5th or 6th gear at about 45 mph we're doing that on a sport bike makes it feel really anemic. But once a sport bike gets going and you're trying to rip into it the Harley can't catch it.

[@proudtitanicdenier4300]

lmfaooooo do you even ride bruh? sport bikes are literally always faster than Harleys. a crappy undersquare air cooled harley isn't comparable to a Japanese engine

[@vizualjockey4419]

Um… I don’t think you’ve ever ridden a sport/naked/street bike bud. The weight difference between most Harleys makes up the difference in torque between them. Having 70ftlbs of torque means much less when the bike is 600+lbs. Compare this to the average 430lb Japanese street bike making lets say 50ftlbs of torque, the power/weight ratio is more in favor of a street bike the vast majority of the time. It’s not really a linear ratio.

[@johnantonopoulous6381]

@@proudtitanicdenier4300 yes I do ride a vmax and a r1. If you watch a Harley race a sport bike listen to the engines. If they launch at a light until both get to that about 7k RPM. The Harley will keep up but then the sport bike will take over because it can continue to rev. HP is torque*RPM/5252. So if you look at the Dino chart of a sport bike between idle to 7,000 RPM they make no torque so that means they make no horsepower until higher rpms. Which is why I'm saying if you get on a cruiser at 45 miles an hour it's perfectly happy in 6th gear. At 45 most sport bikes are not happy with sixth. I mean they're still motorcycles but it's nothing like when you get it to its power band. Also I'm not saying once a sport bike gets up into its power band that it's not going to just destroy the holy than crap out of a Harley. Just until about that 30 mph they will both be about the same depending on their torque output versus weight of course.

[@johnantonopoulous6381]

@@vizualjockey4419 listen to the engines of a sport bike versus a cruiser and you'll see the sport bike and cruiser in a drag will be up about the same pace. Up until the point the cruiser has to shift and can't continue to build power like the sport bike is all I'm saying. Then the sport bike will continue to build power continued to get faster because it's engine is getting into its power band and then it will destroy the cruiser.

[@se7vnlaw659]

Ahaha..let have fun..i give you my flavour 2 in 1..feel tht

[@yohaan9]

Maybe....just maybe this is why I managed to outgun a Ninja 650 in the mountains with my 2022 RC 390.

[@proudtitanicdenier4300]

no its cause you're a street rossi

[@yohaan9]

@@proudtitanicdenier4300 I'll take that as a compliment as it made me smile real loud. ✨🤝

[@vizualjockey4419]

Rider weight and skill along with road and tire conditions play a role as well. From an academic perspective, a Ninja 650 is considerably faster than a RC390 all things being equal.

[@SHSPVR]

There no way your RC 390 44hp thumper out performed Ninja/Z 650 parallel twin 67hp it's more likely the person driving it didn't know what they were doing

[@yohaan9]

@@vizualjockey4419 yes of course it's way better. That's why I mentioned it was the mountains. We don't have large wide roads like the States. I'm from India and over here the roads are narrower. I guess (not to blow my own trumpet) I'm just that used to riding in the mountains. The 650 looked relatively new and I started on a 110cc gearless 😂. So eventually climbed my way to a 390

[@madarchermoto4955]

At 5:40 on the far left is that the singer for Boyce Avenue?

[@froggles8814]

you said cubed when you meant squared at around 2:05. cheers

[@adarshsharma4217]

Damnit, I accidentally clicked on my maths lecture.

[@lukasbertiola]

Lov u yammie

[@Firestorm637]

If you discussed cc’s, strokes, and bores why not HORSEPOWER which is also a math calculation as it can not be measured directly, HORSEPOWER = torque x rpm /5252. Like your stated you need rpm to make horsepower. Oversquare motors are the best for that. Also less rotation mass.

[@mociczyczki]

and what can be measured directly ? 🤐

[@ReQuiem_2099]

Lol, a Harley being faster than anything. The new 300 Vespa is better than an SVO Harley.

[@mastergogoy6166]

Wasnt there already a video about this before?

[@the_real_drengr]

This is why my tiger sport 660 is faster than my father in laws 1100 cruiser.

[@michaelmugo247]

Informative

[@JMoroccoMisterBoy]

Tks. much.

[@doitalldavey8788]

My gsx650 is a great bike around 85hp i know the gsxr600 is a more powerful engine

[@yiannishayabusaofficial]

AWESOME VIDEO ! ! ! ! ! !

[@raytokens2291]

Waaaaaa????? I got lost at kawasaki 636 and fazed in and out till the end of the video. Wow I need a drink. My brain hurts...... DUDE!!!

[@joseph9556]

Is rokform ever going to make a phone case for Google Pixel tho

[@francismacdonald50]

Hi Yammie, I know you might not see this but i'm just wondering if you think its fine to start on something like the ninja 650 rather that 400 just so that I don't have to upgrade so soon

[@CaffeineFreak13]

Technically yes its very doable, especially if you are a bigger/taller person. You should try sitting on both bikes and have someone hold the front end straght up for you to see how you fit on them. Im 6'4 / 200 pounds and learned on a 250 but it was always cramped. I got a 650 after like 6 months and modified it a bit to fit me better but i was glad to have gotten the experience of the smaller bike first. My wifes ninja 300 was a fantastic bike for years and i would use it for track days, and to commute while saving money on gas after i had gotten into bigger/faster bikes. The ninja 400 is more peppy than the 300 and had a larger feel to it so i honestly think you should go with the ninja 400 if this is just your first bike to learn with and are looking to buy something better in a year or 2.. the ninja 650 would be fine if you find a cheap used one but i wouldnt buy a new one over a new ninja 400 cus the return of investment is pretty deminished.. ive ridden for 10 years and after going for bigger and bigger bikes, you tend to go full circle and look at smaller lighter bikes with enough power to do what you want it to.the key is to have multiple bikes

[@johnpfingsten4221]

Squared not cubed

[@tomshelton92]

Who else is here for the duck facts 🖐️

[@tammyforbes2101]

I have never heard anyone sound more like they was reading something they didn’t understand and trying to sound like they do! Like I’m surprised you got the words right to be honest 😂

[@mociczyczki]

ninja claimed hp is 45 on dyno it show 49 cos they lil lie people 😉

[@vizualjockey4419]

Crank power and wheel power are different because the final drive from the engine to the wheel through the chain introduces efficiency losses. There’s also air density and temperature to consider when you put any engine on a dyno. Testing a bike at high elevation as opposed to sea level on either a hot or cold day will change the final numbers you get.

[@carthius]

...I know some of these words...

[@gregberlin2644]

Hey guys. Im thinking about getting a motorcycle in the spring i've rode dirtbikes and a few motorcycles before but not out on the rode. just wondering what you think would be a better fit for me. a kawasaki zx-6r or kawasaki 650. thanks

[@ogyg1007]

I've been asking the same thing but r6 vs zx6r and I think ima go with zx6r but to answer ur question 650 is good at low speed and zx6r is a beginner death machine if ur not riding to work and back maybe to the grocery store maybe go with 650 if u plan to find some new friends and get ur zooming out ur system I would say zx6r it tops out at 170ish give or take and u won't need a motorcycle for a long time but 650 tops out at around 120 to 130 if I'm correct as a beginner rider u might not go that fast at first but when u feel comfortable u won't have to upgrade just my thought and opinion from what I've seen on the Internet but look up the video yam dad has done on both and make ur choice

[@rizanzaky616]

go grab a twin, then gradually switch to four cylinder the next year

[@gregberlin2644]

@@ogyg1007 thanks for the help. you said yam dad lmao

[@alks091]

Brah, get a ZX-6R. I just got mine a couple weeks ago and I love it.

[@milesgreen4801]

No EICMA video? They dropping heat for 2023. Shame on you Yammie, I wanted to hear you talk crap about the new Versys 1000

[@tomekkruk6147]

In the UK you don't even need a licence to ride a 125. All you need is a 5 - 6 hour training called Compulsory Basic Training, stick an L plate on your bike and off you go!

[@mdshahbuddin3858]

Noice

[@toddwebb7521]

My cruiser may not be especially fast but it's faster than a cbr500r

[@cHeile]

sadly i used to have one as a starter and can confirm they were extremly slow

[@vizualjockey4419]

Not saying much here…

[@automech01]

Blah, Blah, Blah

[@silencegohome1496]

Lol come on mate, there was some decent info in here.

[@proudtitanicdenier4300]

dumb learny videos. me hate learny.

[@pine207]

Ok boomer

[@thebeatingguy12]

Found the Harley owner

[@rickstevens1479]

Right , how dare he try and befuddle us with that fancy cifering... We're amercans , you might as well be speaking French..

[@cjjorge6636]

now i can show my buddy's y my 600 is fast then his 650 not just pass him every time lol

[@pablochamorrovelasquez3785]

what about daytona 675

[@proudtitanicdenier4300]

yeah.

[@2wheelsonly614]

650 slower than 600....thumbnail: 650 and 1000

[@Illness.og.]

650 is fast. You’re just desensitized

[@cipherusgenzler]

DUCK!

[@mattware1849]

Yammie stooge

[@ancientfoglet9600]

My Ninja 650 is fast.

[@hendrixc6988]

Papa yams why gasgas never get any love?

[@buntys91]

Ducks 🦆

[@sparz14]

Please stop using all this stock footage. It's so irritating. I'd prefer to just see you writing on a whiteboard.

[@se7vnlaw659]

Oklk

[@pruthvirajbhople]

First

[@GoofyHunterIso]

nah im first check my comment

[@GoofyHunterIso]

first, pin me

[@timothyhodges9729]

How bout, "get fucked, mate" 🤣🤣

[@proudtitanicdenier4300]

literally nobody cares. go touch grass

[@GoofyHunterIso]

@@proudtitanicdenier4300 becuase of doing that i failed nnn💀

[@jonathoncook8367]

It’s a zx-10 on the thumbnail….