TUTORIAL: COMPACT Inline 2 Lego Vacuum Engine

Here is a tutorial on my newest engine, a compact Inline 2 LVE! It uses a unique valve layout, which I call Parallel SVS. Its that layout that allows the engine to be approximately 25% smaller than my other i2 engines. Hope you guys enjoy!
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My channel: / kfpluslegomastery
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Thanks so much for watching! Please don't hesitate to hit Subscribe and Like!

[@KFPlusLegoMastery]

Tutorial starts at 1:48!

[@nordfnm525]

How many watts does your vacuum cleaner have?

[@Forza1708]

I built or correctly but the crank seems to not work properly, like it hits the wall, the crank for the valve what part number is the crank the yellow thing 😊

[@lellesworkshop8834]

Lelle was here (great vid btw, greetings from the swedish snowy mountains)

[@aspect692]

Woah what a coincidence, I was just making one of these

[@aspect692]

It just broke :(

[@lellesworkshop8834]

R u in the discord server, IF not would highly recomend

[@maxv3450]

yea

[@smallenginesgarage7168]

i just built it its amazing

[@LS1sLegoGarage]

I'm suprised 747 didn't mention this but this design is very easy to boost, much easier than a traditional design I really really like this design overall, I plan to attempt a inline four cylinder using this design, should make it a lot easier and make the manifold easier, hope you weren't already planning this haha

[@probricks5035]

Epic

[@matthewfallon2288]

you should make a inline 4 tutorial

[@KFPlusLegoMastery]

Just make 2 of these and slap them together!

[@matthewfallon2288]

@@KFPlusLegoMastery that would be very compact I love it. ill try!

[@octacore4009]

i just built it too! sounds incredible!

[@sarahethier1613]

Something that I've found while making lego vacuum engines is that if you put a bracing at the other end of the fly wheel and attach it to the base, it runs much smoother and gives better performance Just wanted to point that out :D Also I love this engine :P

[@Catz0125]

Butterfly won't work in multi-cylinder configs because of the way it leaks during the up stroke. The leak will rob the power from the other cylinder.

[@smallenginesgarage7168]

@@Catz0125 it does work in multi cylinder i already built it. The pistons need to be timed same to each other, no offsets and it works

[@Catz0125]

@@smallenginesgarage7168 Yes, this does work, but what's the point of having a twin cylinder timed the same when you could just have a larger single cylinder?

[@samueloliverLegoVacuumEngines]

0:01 I have always enjoyed that intro!

[@pawezawistowski6065]

Great video!

[@MegaMike1]

Wow that is so cool!!!!

[@koolrushin5875]

cool

[@JMP256]

?:you will never know what i said:? Sadly i dont have the stuff for this

[@bedbomber3531]

ok

[@littlegenius08]

Nice

[@thelegoengineeringchannel1090]

now this is cool

[@williamkoenig7433]

New update I made the inline 2 with 270 degree timing and I just tuned it and it has more torque and speed

[@Xyz-vn6df]

I am currently working on my online two I am adding in a throttle body exhaust valves and I am honing to be working on my brakes

[@Kevin_C97]

Wouldnt adjusting the gears allow for advanced timing?

[@xgaming2229]

i built it and it didnt run..well i put the gas mechanism from the on-piston-engine on it but everything else is the same. So what could be wrong?

[@taylor842]

very boxy. I like it

[@legovacuumengines-448]

you should add support so the wheel isnt flying around

[@jstoutdoors]

I’ve made multiple vacuum engines with the Lego crank arm, and have come upon the same issue with all of them. The crank is not strong enough to handle the power that is being made. I have solved this by taking two of the plates that have a double connector and gluing them together, but it’s not a permanent solution. Does anybody have any ideas for a more permanent solution?

[@cannonandre9513]

you should buy a tachometer so that you accurately measure the rpms of the engines. i use one all the time and they are fairly cheap. the lve i built today spins at 2500 rpm.

[@neotesson1462]

Mine isn't working it turns over with some air restrictions inside but not working someone please help😢

[@smallenginesgarage7168]

LES GO

[@KFPlusLegoMastery]

I know how much you’ve been waiting for this! 😄

[@Johx16]

How do I know what to get for this build?

[@user-cr7ub4cs1n]

So a little question …. How make faster ??

[@nataliaparpalov8665]

Can you please make a butterfly engine tutorial plz!!??

[@tzhemeyt7821]

I need a step by step of how its built

[@yoshii_z5617]

Hey uh quick question, do you apply oil AFTER building the engine? Or Apply oil DURING building the engine?

[@KFPlusLegoMastery]

Either method works, but oiling some spots like where the axles go through the holes could be easier while building

[@you_ate_my_sandwich.]

I give you the award for the sittiest tutorial ever Edit: i finally made it work but it has no power, quet asf, and i added throttle but if i dont open it and just let it go on idle it stops😒 4 hourst to waste and needed to scrap my good 1cyl for it..

[@SweptSaucer]

What are all the Lego parts?

[@damnthiccassboye7138]

Try bigger valves for more flow

[@Inc_69]

Would having an exhaust valve benefit a 1 cylinder engine?

[@taylor842]

I would imagine that If you are using a turbine or supercharger concept added to your engine, an exhaust valve would help release any extra pressure that is built up in the piston chamber. I dont know for sure though.

[@username3244]

On these engines, the one valve operates both functions of intake and exhaust contrary to the real counterparts that have at least 2 or up to 5 valves per cylinder.

[@smallenginesgarage7168]

I actually couldn't measure the RPM because it always blows up. whats about the max RPM? about 3000-4000?

[@nicolocampioli1739]

mine reaches 5000 rpm before the connecting rod snaps.

[@B_Poort]

Yo! Maybe use a gearbox with a cluth at the output shaft, and a bigger flywheel, so you could make it even more realistic!

[@taylor842]

a cluth would be pretty awsome tho

[@B_Poort]

@@taylor842 yeah

[@shauncobb4140]

If I use smaller gears for the timing will it still work I don't have those ones

[@KFPlusLegoMastery]

It should still work as it’s the correct ratio and timing!

[@RobertoRodriguez-iw2zf]

How the pistons are very free . Not strong to turn manual

[@nordfnm525]

How many watts does your vacuum cleaner have?

[@KFPlusLegoMastery]

I’m not sure, but I’ll try to find a way to measure that.

[@nordfnm525]

@@KFPlusLegoMastery Thanks but it is very important to me because mine has 2100 but my engine is still silent

[@pike_o8]

@KFPlus Lego Mastery does increasing the cylinders in quantity improve the rpm and the torque of the wheel? because after all, it is all from one vacuum suction.

[@KFPlusLegoMastery]

In fact it does, because of the fact that the power is more evenly distributed and not completely wasted on one cylinder, you’re able to get more torque as well as a smoother engine in general because of more consistent power delivery. It’s definitely hard to explain and worth its own video to go into depth.

[@ouchyy]

does it require the chain in the back?

[@KFPlusLegoMastery]

No. You could do a regular gear train, it would work the same way

[@arekkusu1p177]

How do you make these from scratch though?

[@KFPlusLegoMastery]

Magic perhaps. Just kidding, most of my original engine ideas were inspired by other engine builders from years ago

[@goose-the-gamer]

i only have three camshaft pieces

[@shlushe1050]

Just was thinking, if u want more efficacy, maybe oiling the chain could help... in my engineering class we used brake part cleaner and deoiled a chain and measured how fast it run. Then we oiled it and it went a bit faster. Also, could u use the design of a butterfly valve and just remove the regular valve and swap the pistons out witj those?

[@Catz0125]

Butterfly won't work on multi-cylinder engines. Since the cylinder leaks while on the non-power stroke, it will rob all the power from the other cylinders.

[@shlushe1050]

@@Catz0125 ohhh didn't think of that

[@smallenginesgarage7168]

@@shlushe1050 they are lying. Butterfly engines DO work im multi cylinder, they just need to be non offset i already built a 2 cylinder butterfly before and it worked great, the pistons need to be non offset

[@taylor842]

@@smallenginesgarage7168 clever Idea. so since butterfly engines release air going down, you cant have an offset on the pistons since that air leak robs all power from any other power stroke?

[@williamkoenig7433]

im gonna make the pistons 270 degrees apart

[@williamkoenig7433]

I did it and I'm pretty sure that it has more torque but it definitely sounds better than the 180 degree version

[@Duncan-Donuts]

What about a compact i3

[@KFPlusLegoMastery]

Definitely possible!

[@gp8666]

OwO

[@daxtonbarnett3101]

Non accurate can’t see the pieces holy cow that’s fast do a right tut please