High Bypass Turbofan Engine Assembly - Educational Model

[@dwaynesimons-d2c]

Sounded like a bag of bolts being shook.

[@Petriefied0246]

Jet engines usually do at low speed.

[@Alex50969]

That are the blades of the compressor. There are several reasons for that: 1. Easy Installation and removal 2. As the engine spins faster the centrifugal forces will push them outwards with hundreds of G's, reducing the vibrations 3. It leaves space for thermal expansion For the model you dont need any of that obviously, but in a commercial airliner thats another story

[@chrisprobert6]

Ha. Bag of bolts would be more useful ,to me. Good but of fun tho'😅

[@RyshusMojo1]

Boeing built it.

[@Alex50969]

@@RyshusMojo1 or that, true

[@Sasquatchadventures1]

Man that thing was not machined well. Main shaft not in balance fins moving and scrapping housing. Johnny needs to make a high quality one

[@superskullmaster]

There is a guy on YT that made a running one. And tbh it’s much better than what this guy would end up with. No glazing here.

[@Sasquatchadventures1]

@@superskullmaster name of channel?

[@AdityaMehendale]

@@Sasquatchadventures1 AgentJayZ :p

[@superskullmaster]

@@Sasquatchadventures1 kzbin.info/www/bejne/Z5jCea14fM2kf6csi=JI4KElE3TxvVTRlK

[@superskullmaster]

@@Sasquatchadventures1 channel is called “DST - Engines”

[@xxadrian_mxx7871]

I could see Johnny machine one that actually works. 😂😂😂

[@Petriefied0246]

With the right metals and a lubrication system, it would probably run.

[@N_Jones]

@@Petriefied0246 nah, high-bypass doesnt scale well unfortunately...fluid-dynamics and all that.. but single-stage low-bypass is very doable, I built one as a teen 20+ years ago.

[@PiDsPagePrototypes]

@@N_Jones DST-Engine yt channel is worth a look, High Bypass RC sized.

[@HolloMatlala1]

The sectional pieces and parts gave it away🙄🙄🙄🙄. I like JohnyQ's Functional classes better

[@N_Jones]

@@PiDsPagePrototypes oooh, I stand corrected...I'll check that out!

[@ActionHeinz]

Cool, that's exactly how the engines of a Ryanair jet sound like. What an astonishing level of detail!

[@divinestarenergy4879]

Are you grmen

[@RailsofForney]

Geez man it’s so true

[@kevint9702]

Glad you didn't have to lock wire all the nuts and bolts.

[@salmiakki5638]

This won't be ETOPS tho😂

[@Chris_at_Home]

There really isn’t that much lockwire on an aircraft engine. Most of it is on the accessory gearbox and the tubing. I worked on the assembly floor at P&WA for a few years in the 1970s.

[@jorgeconcheyro]

Come on Johnny!!! It only takes a sparkplug and some nitro hahahaha. Nice build!

[@JarheadCrayonEater]

Awesome! I'm a former Turbofan Test Engineer for Lockheed and Rolls-Royce at Stennis Space Center, from 2007-2012, testing the Trent 900, 1000, and XWB engines for the Airbus A380, Boeing 787, and Airbus A350. I've got to get me one of these!

[@salmiakki5638]

God the Trent XWB is beautiful. Btw, can I ask you one thing I couldn't find the answer online? I've seen the inside surface of the air intake/nose cowl to be perforated with small holes. Is it actually blown to remove the boundary layer? Or is it just a texture to reduce the viscous friction?

[@superskullmaster]

@@salmiakki5638why can’t it be both? 🧠

[@salmiakki5638]

@@superskullmaster but maybe it be neither, those were just my hypothesis, and I couldn't find mention of these holes online or even technical documentation I used to have access to

[@simplefact4u]

Would you settle for such poor quality and inaccurate design ? I'm an aero engineer and never get this cheap as Chinese junk

[@JarheadCrayonEater]

@@simplefact4u, I just want something similar. This one does sound like shit. I definitely didn't mean "I want to get that exact one!"

[@Billskins4dayz]

sad the tolerances are so bad could have been a really nice model rotating silently

[@Noman1000]

you should hear what it sounds like when an actual jet is windmilling on the ramp

[@Billskins4dayz]

@Noman1000 i know they make some noise but it's not necessary with a model or they could have tightened the tolerance and had an explanation on a plaque with the rest of the information

[@N_Jones]

@@Billskins4dayz The noise is the individual blades moving when it's not spinning fast...the real ones do the exact same thing.

[@Billskins4dayz]

@njones420 I know this but it ruined a nice model on this I'd choose functionality over accuracy when it's never actually going to see heat to shrink tolerance

[@cliffordgwekwe9853]

Hands down awful .I'm actually disappointed

[@MazdaBass971]

For the cost i would expect that to be machined better. Cool table piece though.

[@Failure_Is_An_Option]

Says the clown that has zero machining and engineering knowledge or experience.

[@theOriginalskillr]

For that cost id expect it to be fully functional

[@BackwoodsTinkerer]

For $999 it should be way better quality. That's insane

[@THISLOVETHISHATE99]

models are cool and all but u know what could be even cooler one of these that actually operates like a real one

[@aserta]

You should shim up the blades with paper so it doesn't sound like someone threw a bag of pennies inside that thing. :))

[@chris1451]

Why? Real turbofan engines sound like that when they rotate slowly. The fan blades are loose on purpose.

[@mitchilito99]

After seeing all the trouble and design that went into this gorgeous thing I sure didn't expect it to sound like that!!

[@ExpressoMechanicTV]

Beautiful piece of engineering. Be great to see one that actually runs with fuel.

[@locouk]

I was looking at it thinking the tolerances were lousy and wondering if it would be rectified on tightening all the fixings, now I know why it’s not a working model.. My dreams are shattered! lol 😅

[@georgieliverpol]

Sounds like a Boeing lol

[@electron_290]

There are actual jet engine models like this that actually work, but they are very expensive to buy and maintain.

[@AL-RCjunkie]

I've had quieter shopping carts at the dollar store😊 Run some fog through that thing. That would look pretty cool 👍

[@MTBCrafter]

3:00 if you wonder what these tubes are for: This is called Low Pressure Turbine Active/Passive Clearance Control (LPTACC/LPTPCC). All these tubes have small holes on the inside and they blow cool air at the LPT Case. This is done to ensure a small tip clearance between the turbine blades and the case to achieve a higher efficiency. The difference between active and passive is the presence of a dedicated valve (active: there is a LPTACC Valve - passive: no valve). This is a nice model for educational purpose however I'd prefer a two shaft model (obviously more complex but also more accurate). Thank you for sharing!

[@stephano6793]

6:48 I can't stop laughing. Marble machine.

[@KefirTView]

I'm watching the assembly of this turbofan engine and having one continuous thought while seeing all of these parts coming together......." I am never boarding a commercial airliner again!"

[@tomdavis6547]

It is a very good teaching aid but it would self-detonate at those tolerances in heartbeat. Very cool.

[@MONKMIKE]

Wahoo, a New upload with JohnnyQ90 !! It's my favorite channel, with the mad Engineer, Machinist. 👍🏻😎👍🏻 Thank you JohnnyQ90. 🙂

[@S00rabh]

I have been thinking of making one and this came up. Makes me want to print one today.

[@nykthosnyx]

Omg those tolerances lol Cool build.

[@UnreasonablyIrrelevant-gv8xx]

I think were all thinking the same thing. If Johnny just machined a few parts for this.. Itd probably work 👀

[@foxwhiskey]

Hi. With your knowledge and skill it would be no problem to fire this engine up !😊

[@andymunnings9109]

" I Like how small and complex it is, It is a work of Art."👍

[@springytrapp23]

This looks good! I dont know any of this but my dad who was a jet engineer knows.

[@Zach-ci1lz]

always a pleasure and a surprise to watch you put things together

[@plantaseed888]

I already see your vision for this one... Do it,it will be perfect!!!

[@Zbenesch]

It does look cool and educational. It most certainly does not sound like it. I was waiting for metal fatigue to set in and jam everything, but it does show a lot for educational purposes. Nice build!

[@timfremstad3434]

love these engine builds....

[@AndrewKlilly]

That’s sooooo freakin awesome

[@OZtwo]

Johnny! We need you to build one!

[@AllRightsReservedNoSurndr]

You have a very good life. Thank you for sharing. Watching you put together all the coolest toys is great. Thanks again.. ive watched every video of yours.. love every single one of them.. 🙂

[@qacomputers3344]

Friggin Sweet dude!

[@dronetalia]

You can read the user manual very quickly and backwards, that's what talent looks like 😂👍

[@TM-88]

Oh wow. All of that just to see that small ass motor powering everything. I honestly that flames from hell would be coming out of that thing when completely assembled.

[@ryanbennett2227]

I love it😂. But part of me wants to see that spin faster and faster till failure 🤔

[@채찰리채플린]

아무리 바빠도 일단 영상 시작 누르면 멈출 수가 없네요..

[@BigBadDodge4x4]

Holy Crap!! That is the same jet engine off my last flight!

[@djfaber]

Can't wait to see you turn it into a desk fan =)

[@carsoncolegate6798]

I'd love to see you machine your own working model of a jet engine!

[@crashwelder5337]

With the runout of the turbine visible when looking in from the rear of the turbine , if you spun that up it would scatter extremely destructively. Something doesn't seem right because it sounds like a washing machine filled with bolts and nuts

[@davidgriffiths4844]

It’s an educational model, it is not intended to achieve the strength, tolerances and frictionless operation of a real jet engine! If it did it would be much more expensive!

[@gunggerdin1]

@@crashwelder5337, at low rpm, the front stages of the engine have their blades pinned and are able to move 5 to 10 degrees about the pin, the noise is something else at 20 to 80 RPM. It does sound exactly as you describe.

[@OldRhino]

This toy sounds like a 1982 Ford Escort with carburetor trouble. 😂

[@IS0162]

Love your videos man!

[@dheruer]

What really grinds my gears....... But awesome piece to have on a desk :)

[@CapnT87]

As a gas turbine engineer I feel like a failure for not having one of these on my desk 😂. May just have to get one…and know what it feels like to be on the other side of assembly instructions 😅

[@pattes123]

This must be the Boeing model...

[@DimasFajar-ns4vb]

wow your channel is so different sir

[@michaeldantoni4292]

Thanks for sharing. I'll make sure not to buy one.

[@M1LAD81]

I thought it was a real miniature one. Oh well. Time to make one I think, Johnny Q90!

[@Project337]

Johnny I'm gonna need an age restriction on this video, I work with gas turbines and this is NSFW. Great stuff!

[@rickhalverson2252]

Pretty cool, and then you powered it up. You could build it from Lego blocks and be 100 times smoother than that.

[@Mostafa-vs8bd]

It should be real model and functional with fuel.

[@weegaz22]

I bet you could get that rotating assembly to run quieter, would require loosening off all the housing bolts and shimming the fan to centralise it then tightening up again.

[@daniebecker7704]

Next step, fuel and igniters. 😊

[@Heybat]

Can you convert it to a working jet engine? That would a fun project.

[@유경재-o2q]

All I have to say is that I am teasing and amazing!

[@u0000-u2x]

Very cool model!

[@raindeergames6104]

Now fit a 12S brushless system on there and lets see some thrust😂

[@momentarylapsofreason]

From what I’m reading in the comments it’s sounds like it would explode 😂

[@raindeergames6104]

@@momentarylapsofreason exactly. That would be spectacular😁

[@diegomayan]

1000 USD and not even double shaft. Johnny can make it better

[@Fireball_Roberts]

IT'S WORKING!!! IT'S WORKING!!!

[@Ren_Kar]

😍приветствуем любителей реактивной тяги

[@RixtronixLAB]

Nice video, thank you :)

[@aoyuki1409]

i was waiting for Johnny to put in the kerosine until I realized its not a real turbofan model

[@Skiridr22]

That’s a cool kit

[@zachattack2016]

id love to see you get ahold of the good quality rc turbine engines and take it apart

[@Valk69]

As a retired aircraft tech, I approve.

[@samulik7370]

You should add the total build time in these videos! Like at the end of the video do a little summary on how many hours, days or weeks did you spend on this. For us viewers, this is only a 8minute video, but i can't imagine how many hours you did spend on this, or any other your builds!

[@mitkasan8915]

Top sound of working 😂😂😂

[@AlinityA]

Johnny build a real one.

[@rockerpat1085]

Man Add A Little Oil In Places!!! Totally Assembled Dry!!!

[@DEV_XO]

More turbo fan videos please!

[@charles0423]

I once had a Haynes plastic model of a jet engine like this and run lighter gas through it, it ran for a second until it blew up I wonder if you replaced all the voids in the components and put ignition in if it would run?

[@madgaming69420]

I don't think this thing can Handel it for more than a minute max

[@charles0423]

@madgaming6667 You'd be surprised how resistant these little metal things are but yeah ur probably right

[@karllaun2427]

They should integrate some jet sounds into that speed controller. Maybe a fine kerosine mist too.

[@chiron9536]

Make it functional

[@Ismsanmar]

The problem with this models is that they usually cost arround the same as a real RC type jet engine. And the RC type one can be expose, can be dissasembled and reassembled, and can be turned on and used on a RC aircraft.

[@TonyLoechte]

Sounds good Tolerances look ok Right Let’s get some fuel in there and get it screaming 😂❤

[@Lewis-kf2pj]

JQ90! You’re a legend in the world of model engineering and I cannot and will not apportion any of the blame to you on this matter but when you spun that engine with the little motion wheel, it sounded heinous! As if everything within was rubbing up against all the rest of the parts that make up a whole. I know it’d be a massive amount of work, but I genuinely believe you could have done a better job of building an engine if you made it entirely yourself. There’s something amiss with this unit for it to be grinding like that, I hope you send it back to them. Preferably through one of their windows :) :) (I’m only being silly, kids! It’s never big, nor clever ((like a moron dwarf 😀)) to return products via refenestration!).

[@leonardoheinrich5825]

If you properly lubricate it and give it an overpowered motor it'd make a really cool desk fan

[@Rampart.X]

Sounds like a genuine China Airlines domestic jet.

[@What_Other_Hobbies]

True when you fly in Boeing planes, which is about 41% in China.

[@jimsodowsky1298]

Nice model.

[@856Dropout]

I bet you could put some valve lapping compound in the rubbing parts to help them self clear

[@noranekonekomatagi3261]

If a country can, and have a market large enough to produce this kind of toy, and inspire its children to have interest in aerospace propulsion technology, that country is probably not too far from the real thing...

[@HammockerSam]

This'll go perfect on my podracer!

[@RideRevival]

Looking forward to the videos where you improve this to actually look and sound good, and maybe even run. 3D printed inconel is an option for the hot parts...

[@Timico1000]

It looks like it´s very frustrating to assambly.

[@jared9108]

I mean it’s a great piece for what it is, but maybe get it setup as an actual desk fan and reduce some if not all of it cause that was a bummer to hear after a pretty satisfying assembly.

[@RobTheSquire]

I wonder how long we have to wait until this one get's rebuilt to be a fully functional tubrofan.

[@waldoarmagon6015]

Nice ! i like that ! 🎉😀👍

[@NETBotic]

It would be fun to vacuform clear covers for some of the sections.

[@memeofwheat]

Replace the highpressure side with a hobby grade 50kg jet engine and see how much thrust that front fan assembly can make 👀

[@memeofwheat]

might need to balance and find a way to feed it oil it a bit first tho

[@BBROPHOTO]

Man, @74Gear needs one of these!

[@yayan6436]

Oh boy...is johnny gonna make an airplane after finishing the v8 rc?

[@fullthrottle5994]

Oh le bruit de casseroles 😂. C'est pas foufou quand même... je m'attendais à le voir tourner a mac1 ou mac2 avec post combustion 😂 mais je crois que c'est pas une bonne idée. Mais belle engin 👍.

[@qxtankxp]

Now give it to Kevin Talbot to try to destroy 😂

[@minnesotatomcat]

That sound 😂 looks cool anyways 👍

[@pascal-antoinducardus5074]

Hi there 🎉 I have the same box ordered. I want to start in some weeks to start the build! For the cancelling: what do i need to build model WITHOUT NOISES ? an NEWTONMETER TOOL ? or a ALIGNMENT TOOL for the fan blades ? THANK YOU !!!❤

[@sergegostoli9524]

Unholly cows ! This kit cost 999$ !!! And it sounds like a old rusted pickup trying to crack.. and failing

[@giocattolo0126]

Why was the main shaft bent? Was it like that out of the box?!?