RX-8 Rotary Engine

[DRIFT4TIRES]

Crazy how all that works together in such a lil package

[JuanPapaNicolao]

1:28 you may now kiss the bride lol

[roaringwaterbay]

will it last more than 200K miles?

[LiveWire8241]

@roaringwaterbay hahah probably not, the chances are slim. But its got a ton of potential power for 1.3 L

[Xking89]

I like this music :)

[Josephnesis]

that was awesome!!

[Sujaneex]

hi guys...ppl here says...mazda rx-8 is 1.3 but it hit performance up to 2.6 really....why...alll d rx-8 is the same...???? help me please....which mean i pour oil for 1.3 but my car reacts like 2.6 powered engine car...?? example the acceleration....and top speed

[deaftodd]

i dont understand why it needs two spark plugs.

[maoristereo]

@deaftodd two sparkplugs makes it badass. thats a scientific fact

[thegraveyardboys]

I understand however I would still like to know why ppl are saying it is more than 1.3. I shall look it up

[thegraveyardboys]

I don't know why ppl say it's a 2.30 l bcos of the air intake. It should b known as a 1.3 bcoz the size of the engine on a piston is measured by the cubic capacity in the bor of the shroke. The size of this engine should be the cubic capacity when compesion starts. Or am I rong?

[Thomkatze]

The total volume of this engine (1.3 l) comes from the total volume of displacement for the rotary piston. In a cylinder/piston engine, the total volume of the engine, for example 2.0 l, comes from the total transversal area of the piston times the total run of the piston inside the volume times the number os cylinders. In the rotary is the same, one face of the rotor, times the total circular rotation times the number of rotors

[Aunubus69]

@thegraveyardboys the 1.3 is massured on how much gas a car is receiving. For expamp, a 4 cyclender is usely a 2.0 with DOHC. But the same engine will be considered a 2.2l if it has over sized injecters like most would with turbo cars. hinc thats why there is a L after the number rating liter no cubic inch's.

[thegraveyardboys]

@Aunubus69 i have i 4 cylinder 1.6 fiesta the cubic capacity (cc) is 1595 the measurement of the bore of the cylinder not the measurement of how much gas it uses plz explain

[LiveWire8241]

@thegraveyardboys I hold it to a 1.3 L scale. Call me old fashion in my belief, but the run comapred to a piston engine is not a fair comparison. The rotory is just designed different (3 stroke not 4). Just because the rotor gets 3 total rotations in order to make 1 crank rotation and a piston is 1 to 1 does not mean that the two can ultimately be compared in that manner. This is just me spouting my opinion though.

[2346]

what usually causes rotarty engines to fail?

[proudbugowner]

@2346 Stupid owners or stupid mechanics or both!

[2346]

well id rather have a rotary than a piston cause when a piston breaks it just turns into a chain of problems

[APO6]

@2346 failing apex seals.

[2346]

has anyone tried changing the material for them so they don't ware?

[APO6]

@2346 there are aftermarket seals that are made of ceramic and other materials but any apex seal can break no matter how durable the material. instead of buying expensive after market seals, I would just make sure oil levels are good and/or run premix.

[Aunubus69]

@2346 Apex seals

[keokeeka]

so now i can explain how to build a rotary except i dont know what the names of the parts were

[EndlessT]

After haveing this car, i dont think ill go back to a another car. And another thing is that the big part of the engine is smaller, so you have more room to put stuff in. Im going to put some videos on my youtube account with my car soon, I just have to get my video software working.

[SuperStreet04]

whats is the good and bad thing about this rotary engine vs piston engine...just wondering

[CAWproductions24]

you can get higher rpms before shifting about 10k it tells you to shift cuse it is so smooth at the high rpms you dont know it

[TKDWolf]

Good:

1. It makes immense power for it's size/weight (230 from 1.3L, naturally aspirated)

2. Super smooth running

3. Torque isn't high but is delivered smoothly, which is good for acceleration grip.

Bad:

1. Lots of fuel consumption for it's size, (16-23 mpg for the RX-8) and burns oil with gas by design for lubrication.

2. More heat than a piston engine, louder too.

3. If you don't make sure your engine has oil at all times it will wear out prematurely (but that's true with any engine...)

[TKDWolf]

I forgot that it is also much more simple, with only three moving parts in the engine as opposed to like, 50+ in a piston engine of comparable output, so there are less things to break or go wrong. The apex seals are the only real worry for something going wrong. (those are the seals on the three edges of the rotor that contact the periphery of the housing.)

[yontopapa]

May be you enjoy "The Best Rotary Engine" here in YouTube.

[IBLOWN]

Needs some headwork and oversized pistons. Make it go faster. Maybe a stage 45 cam?

[JesseS420]

yo don't know what your talking about. it doesn't have pistons nor does it have cam shafts It's a ROTARY.

[IBLOWN]

LOL thats the point of the JOKE.

[JesseS420]

No I think that you were the joke all along, because apparently you have no idea what you are talking about.

[JesseS420]

you have just been awarded "biggest dumb fuck in the comment section" congratulations and go fuck yourself.

[nickmx4]

a 1.3L engine that produces 230BHP is pretty damn amazing!

[MachDelta]

Only Mazda and the SAE think its a 1.3L engine, based on some poorly worded arbitrary definition of displacement. The rest of the world knows it consumes air equivalent to a 2.6L engine, which is a little more in line with reality.

[Berzerkka]

true but the engine is still very small for its power..

[dinkodavo]

this is true, in australia our road authorities consider it a 2.7 litre engine, which is a pain when transplanting them into smaller cars. it sounds better when you tell the v8 driver that they just got beat by a 1.3 though :P

[lakoza77]

so guys you mean that we don't need oils

because I don't see nothing like oils

[thermalmx]

look like produce more vibration..

[dasmiffy5]

It's actually less vibration, because there is no gap or loose space for it to vibrate in. the rotor is always solidly connected to the eccentric shaft, and always in contact with the cylinder, so there is actually next to no vibration produced. in a piston engine, there is far more vibration due to the rotational mass of the pistons and cranksahft. thats why rotaries have a way higher red line that pistons.

[amadisdemitrius]

way less vibration because of circular motion and only three moving parts versus about 50 on a standard cylindrical engine which has pistons shaking back and forth... the very definition of vibration.

[lagunabad]

is there any difference in fuel consumption compared to normal engine with the same cc?

[xtw1tch3s]

rotaries have poor fuel efficiencies compared to the piston engines.

[FiasaPower]

LIE !

[dasmiffy5]

Actually, the Renesis engine consumes just as much fuel as a regular reciprocating engine. But it does require slightly more oil.

[cliffkemp]

Torque is force. Work is force times the distance. HP is work done over time. its power band is different than what people are used to so they dont realize just how powerful the engine is for what it is. Tell me another 1.3 that has 2x the "rated" torqe compared to its CID and N/A on top of that. There are none at all.

[cliffkemp]

I have read so many post/comments and they all say the same thing with the negative. No torque.... Since when? The rotary has excellent torque.

[superjulian100]

it has hardly any torque it is just a light car

[cliffkemp]

it has pleaty of torque. Why does no one understand this. for this car to hit 0-60 in about 6 seconds requires alot of torque to the wheels. Everyone looks at torque at the flywheel. This is just a number. Its torque to the wheels that means anything and gearing is what matters then.

[marshin3]

oooooo i get it now

[gielfransen]

yes but that engine has power :O the 1.3 version is already fast as hell! o.O

[nicholasalanleexr6t]

rotary motors are shit..... very good video though.

[gielfransen]

You are shit.

[jewishraggae]

it looks like alot of wear and tear on the side walls and the rotar. These motors would seem to lose all of their compression if a tiny piece broke off on the seal....

[cliffkemp]

If a tiny piece of a piston ring broke off would do the same thing.

[thiagotecnico]

this animation produces no smoke :(

[TommeyLeeReed]

My rotary engine.

[Snowblind113]

sorry not the vid, aotsukisho's comment

[v3eclipseR]

I'm just wondering... since there is a 3 rotar rotary engine already made... how would that work? the video should show the intake and exhaust stroke. great vid though! now i fully understand how tbey work.

[superdude361]

rotary engines may generate alot of heat but they redline at higher rpms than most piston engines allowing for more power

[idiot199]

Accualy, just longer gears. At less power/torque then at lower rpms..

[NonRider]

hey prety good vid.i have trouble fully understanding rotarys.wish u would highlight the exaust better

[AJ31337]

the real problem about the rotary engine is that it uses a lot of oil, and if you turbo it then it just eats up oil, what i like to say is that "when you go to the gas station you fill up your oil and top of your gas"

[CyberPitz]

Except the Turbo doesn't eat any more gas than the N/A version. The only reason it eats gas is because the Oil Metering Pump injects oil into the rotor housing to lubricate the Apex Seals, then the oil is burned up and sent through the exhaust. The Turbo is oil cooled, so the oil goes to the Turbo, and back to the oil cooler. No oil burning in the turbo *Unless you've got a seal blown.* The only way the Turbo engine would burn more oil is because people floor it more often...that's it though

[smiftie]

Wow, thats great!

Are these considered better then the standard piston engines?

[1969MustangMACH1]

well theres less movinmg parts but they dont get as good of gas mililage

[eagleeyes170]

in the future...i really hope they adapt these engines to run on hydrogen or biodeisel because they seem so innovative, and their advantages include increased reliability and very high performance.

[1969MustangMACH1]

exactly. they rev a lot higher then a piston engine

[aotsukisho]

higher revs doesn't necessarily equal reliability OR performance...

[1969MustangMACH1]

a roatary engine won't necessarily be more reliable that a standard piston engine, my dad had a 1973 mazda with one and it was junk but then again that was 35 years ago...there are less moving parts then a piston engine, they rev higher but do worse on gas

[Snowblind113]

most illiterate post ever??

[cliffkemp]

they cycle faster and nearly 40 ci per side is like a v-6 with 220 ci about the same mpg when you look at the concept and compare.

[1969MustangMACH1]

thanks.

[Devast8ion]

It has nothing to do with the revs and everything to do with the percentage of an engine's range of motion which is spent generating power. 1/4 of a 4-stroke's motion is spent generating a power, whereas a rotary generates power thrice per revolution.

[K03sport]

no, not really. Technically, there are only 3 moving parts in a rotary engine (2 rotars and output shaft). There are no valves like standard piston engines. Rotaries make good power for their size, but are low on torque when compared to similar output piston engines. Fuel mileage is down as well. Also, rotaries generate a lot of heat. Personally, I would like to see a 3-rotor Renesis engine, but I doubt Mazda will not even attempt such a project.

[v3eclipseR]

there is a 3 rotor rotary... its only in the cosmo though :/

[Thomkatze]

Yes, in fact, this engine works better than the cylinder and pistons one... but... the friction forces inside the combustion cam, makes the principal worry to the engineers

[smiftie]

Ahh, right.. interesting stuff ;)

[truefunlover]

couldn't u please explain the difference between pistol and cylinder engines? in breaf. i considered then 2 be cynonims

[TKDWolf]

A PISTON engine has CYLINDERS, therefore, a piston engine and a engine with cylinders are the same. A ROTARY engine functions as shown in the video.

[pedrovsky69]

excellet! we can see how this "strange" engine works :D