Jet Engine Thrust Test (Diesel vs Jet-A vs Hydrodiesel) 

Heres how the engine sounded after those tests ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-g394IX-4MD8.html ... Bearing now shit i think HAHHAH

Mild threats just for some statistics is crazy

1:11 Hearing background music over Todd's testing is straaange 😅

98,000 RPM is insane!!! These jet engines are a marvel of engineering!

Keep up the experimentation! That was very interesting and a lot of fun to see!

Heck yeah! Todd from Project Farm! I keep up with his weekly videos. Also, it's good to see you use your intuition and not get on it if it didn't feel right. Thanks for sharing.

Todd from ProjectFarm is a stone-cold gangsta. 😎

As a former Turbofan Test Engineer for Lockheed and Rolls-Royce, it's always interesting to me to see these smaller engines. Similar concept, but totally different in how they are lubricated. On large (Trent 900, 1000, and XWB that I worked on) Jet A is the fuel and we use turbine oil from a tank which is pumped to the bearings. Anyway, great experiment, and thanks for the video!

I wish I was there in person to witness and smell those bench tests. I love the smell of jet a in the morning.

8:02 bro touched the jet

Was not expecting to see PF on the channel! Love the collaboration

I’m so happy you were able to collaborate with Project Farm.

You came to my school today. I told you I would find your channel. Sick video man. I was the one that asked the question and said I like playing video games

It seems like for the hydro diesel the pump was the limiting factor. Looking at it, I belive the pump might either be cavitating due to the water content or the fuel system is just undersized for the extra flow needed. It would make sense for it to cavitate easier as the water content boils at a higher pressure ("less vacuum") than diesel does. If you compare the rpm of the pump you see something is off: Jet A - 7500 rpm Diesel - 8000 rpm Hydro - Diesel 8700 rpm Yet still the engine is only at ~90% rpm and the EGT is ~ 170°C low. A jet engine at 90% rpm is somewhat like a piston engine at 40%rpm.

To squeez out the best thrust from diesel fuel, you should retune the parameters to allow more RPM As diesel fuel is denser than kerosene, it also needs more air to be pumped in order to reach peak temp. Which is the image of max power. May be you did, though... But that may be the reason Diesel appears weaker in spite of beeing a denser fuel. Thank you for this amazing vid!

Great video as always. The jet sound is music to my ears. Thanks for the re-test.

Yessir, he's back with the jet engines. 🔥

Love to see you team up with Project Farm!

I'm sure there still be doubters, but looks pretty conclusive to me 🤷‍♂️ Nice job like always Matt!

It's one of the most awesome sounds there is. Sounds like it's going a million miles an hour just standing still 👍

Two of my fav channels in one video, instant like.

That test with Diesel and Hydro-Diesel was really in depth. Great Content!👍🏻🇺🇲

this is my mild threat to u,..............😂

I like how you did testing and real world stuff and makeing good videos none of your videos are bad they are awesome

Nice demonstration👍 Just a thought, preheating the fuel through a helical coil around the shroud might make a significant difference. If you decide to try this, the automotive stores have steel tube brake line that would work well for that.

Your videos are great; Here in Brazil, few people know how a turbine works. CONGRATULATIONS ON THE VIDEOS 👍👍

The springs in your dyno is exposed to the exhaused. This must -shirley- surely introduce a time dependent interference with the measurments. If you "flip" the bolts holding them, and use longer bolts for the engine attatchments, it should be easy to have the springs "shielded on the outside", and must less effected. No?

It sounds incredible!😮

The science is right there in your face... its a weird world for science and scientists like you. You have setups most of us only read about. Great job on the video.

Mild threats ??? Who the hell threatens someone for comparing some fuel, it must have been a fuel manufacturer, those companies kill for less (allegedly).

Great job bro!

Awesome video man love your channel

You know when things get serious because Todd is called to test things!, as allways mini jet engines videos are the best!

Incredible work! This was fascinating. I've always wondered if reheat is even possible on these engines.

I live in rural Alaska. The only diesel sold in town is Jet-A. The fuel oil used for heating homes is Jet-A. It comes up on a barge from Seattle in a tank labeled Jet-A.

Awesome content.

LOve your video's and you know i have to say it! We need an afterburner on one of them!!!!!!! Afterburner please :)

Never heard such jiggety crazy music over a Project Farm video. It ain't right, I tell thee!

Love your videos ❤ Specially jet engines,see through engine

Another thing I noticed is the inability of the fuel to have a clean burn or be atomized correctly. It seems the engine was shooting raw fuel out a lot more with hydro diesel and diesel compared to kerosene. Interesting experiments!

I'm really trying very hard to find something in this video to get angry about, but I just can't find it.......and that makes me really angry grrrrrrrrrr........🤣😂 Your videos are cool. There is always something happening that is unexpected or new, and your videos are top notch quality. 👍

Awesome video as always. Just a heads up @ 6:56 your plate is visible, might want to blur that since I noticed you taped over the plate in all the other shots.

What to do with those engines? Man, I need that go-kart 🤤👍🏼

I have zero use for one of these engines but man, do I still want one! Expensive though!

love you from India ❤

Those would be cool on my trike, but it might make people on the bike trail uneasy.

I use distilled water + one orange 🍊 squeezed in it, works everytime! May be you should give it a try?

Fantatic thanck you very much!!!! Amasing....😁🤗😃Evandro Pedrosa from Brasil.

Does the dye in the diesel effect the performance? At my previous job our emergency diesels ran straight undyed #2 diesel

Is it possible for afterburner? 😊

Awesome video! I'm just off a 16hour night and have so many questions. Aside from thrust, I wonder the ml fuel per ft/lb-minute and EGT/ft-lb. Also lower EGT should be better for the engine no? what's the EGT/ft-lb? I'm not sure of turbine metrics sorry. For a follow-up video I would, match full-throttle flow rates with a non-density specific flow meter. It would give you that efficiency data and be a truer comparison as you said because of the viscosity's. Maybe a matched flow rate test, matched ft-lb test and matched EGT test?

i love jet engines! simple and power full no pistons and other stuff

Running a jet central mammoth 250 and only ran on diesel so far but waiting to strap it to something worthy ! I bought it just to hear it spool up !

What brand of rc jets do you use ? jetcat, kingtech, jetmunts ?? tks in advance

Is it possible to run these engines on 2 stroke mix? Like a 40:1 mix?

Would off road diesel perform differently? It used to have higher sulfur but that may have changed.

Are you using number 1 or number 2 diesel? That could make a difference and if you are buying it from a gas station explain the issue. Usually they sell #2 during the summer months and #1 during the winter months. Something to thinking about.

Looks like a Swinwin engine . Credit to them

Hello. I do have one of this jet engines (Xicoy 120N) mounted on a RC plane myself. I can of course share with you what fuel I use, and I think I can also throw a bit of insight on the matter. I will start saying I (politely) complained on your last video on this topic, but your response was also perfeclty polite, and I hoped for a retest. I think this video is much better done in all ways. As you say in the closing part, the difference is caused by the different viscosity on diesel vs kerosene. So pump duty cycle must be a bit higher on diesel. Controllers of different manufacturers do this in different ways, if I am not mistaken your turbine is a Swiwin, and they learn the maximum pump setting the first run after defining the PWM range on the throttle channel. If you did not perform that every single run that explains why in the first video the results are so different. Note that if you perform the the PWM range calibration on diesel it will work on kerosene, since the setpoint is higher than needed, but not the opposite. For myself, I tested both diesel and Jet A1, with the turbine mounted on the plane, pushing against a simple bathroom weight on a wall. On my ECU you have to manually set if you are using kerosene or diesel so the pump has the right settings. Thrust is within margin of error of my setup (+-5N), marking 125N with both fuels. I do fly with kerosene usually for two main reasons, since thrust is the same in my tests: 1) The smell in the car is terrible with diesel, since RC plane fuel tanks are not sealed 2) Cold starts are a bit easier on really cold weather (less than 5ºC) with kerosene I use the manufacturer suggested fuel/lubricant mix, which is 4% total oil, of wich 2/3 are Mobil DTE light industrial turbine oil, and the remaining 1/3 is high quality esther-based 2T oil (motul 800). A desirable side effect with diesel is that, according to the manufacturer of my turbine, you can run the turbine a bit leaner on oil, at 3% instead of 4%, since diesel is also lubricant in itself. With a bit less oil maybe (have not tested myself) maybe the thrust would be a tiny bit better on diesel. Since we are talking about minimal differences, I will stay with kerosene anyways. Nice video overall. Keep up the great work. You can check some videos of the plane (and some more turbine-powered) with that turbine in my channel if you have curiosity. Just do not expect anything fancy.

FERY Impresive

It is just so stupid that people go so far as to threaten someone just because they don't like the facts. The Kerosene is the winner and that's that. So what? If you want to run diesel then do so. I would run the kerosene though as I would get more performance for the buck from it. I don't care which "wins" by the way. Great test by the way!

Was your diesel fuel winter or summer blend fuel? That would give you some different results.

🔥 💨

Is it Shell VPower Diesel/ BP Ultimate Diesel or the Normal Diesel?

That Park's Squirrels will forever tell stories about the man who walked thunder on a leash

Once again, great video, man! Thanks!! It amazes me how stupid people get, if they don’t agree with a video they chose to watch, which didn’t cost them a dime. 🙄

Thanks Matt. People are unfuckinbelieveably comfortable with running their mouth these days. Keep em coming please.

Holy smoke, Hydrodiesel, never herad of that stuff.

Lots of room for improvement on this video

Bro love from INDIA

can we see a jet engine with a wet nitrous kit fogging the intake ?????????

يعطيك العافيه اشكرك

Where do you order these jet engines from?

Hi Good to see you have seperate orange turn signal on truck

I used to work on oil heat. There were experimental oil pre heaters that was supposed to increase efficiency.

Could it be because diesel is a fuel that works better under compression? What if you added a small amount of gasoline to the diesel to help it ignite more easily? My thought process being that the injector and ignitor inside the turbine is essentially like a smaller version of something like a flame thrower? Maybe add a small amount of racing fuel in with regular diesel? Obviously this comes with the risk of blowing up or melting the engine, so im not sure how willing you would be to do that and im just speculating.

more power!

Unrelated but, I think everyone wants to see a twin turbo go-kart/twin turbo see-through engine/twin turbo lawnmower engine

The EMI from a jet engine is cause by the stream of sparks from the jet fuel igniters. Once the engine is self-sustaining, the igniters are no longer used and are only used for restarts.

Jet-A All the Way!

I like how we can cyberbully my dude and we get a video of our choice

I'm sure WP knows this, but for everyone else, with jet engines the true thrust potential with any fuel essentially comes down to the caloric rating of said fuel, aka how much heat it can generate. Jet engines will optimize around power primarily and efficiency secondarily. While most operating principles in the RC engines are similar to commercial 'full size' jet engines (while being Drastically more simplified), lubricity of the fuel isn't a metric of overly high concern for anything other than subsystems and accessories. The engine itself is relatively low friction already, where the oil is more for heat scavenging of critical components with *some lubricity for bearings and wear surfaces that are sealed away from the combustion environment. Actual jet engine oil is remarkably 'thin' in viscosity at room temperature and even lower at operating temperature, visually equivalent to straw-colored salt water. Long story short, whatever fuel burns the hottest will have the greater potential net thrust. Add: Since you asked, I run my experimental engines when I do testing on slightly refined used engine oil, primarily when testing new parts for engines in the 170mm and up size. It burns plenty hot to where you really need to monitor exhaust temperatures to ensure you're not melting parts (although I do composite part testing on occasion and actually want to try to burn them out).

Do you have decibel meter? Can you next do decibel test please of this jet engine?

RC controller, three jet engines and a go kart. You know the obvious next step is to put a giant servo where the steering wheel would go and take it out to a runway or something.

Great Video. The MAX thrust on these jet engines is dependent on their MAX RPM reached and for this 300N engine its MAX rpm to make 300N( 66LB) of thrust is 98,000 RPM. You can see in both Jet-A and the Diesel test the engine reached pretty similar max rpm's therefore the thrust was very similar.......only 4LB difference. And that could be because of the resolution of this thrust stand isn't too great, would be better to have a loadcell rather than springs but I understand the simplicity of the test stand is nice with the springs. In the Hydro diesel test you can see the engine DOES NOT reach max RPM of 98,000 rpms. It only reached about 82,000 rpm. These engine make most of their thrust in the top end of their max RPMS so 2000 or 4000 rpm below the MAX rpm make a huge difference in thrust. And in this case it was 8000 rpm below MAX rpm. So in order to solve this issue you have to recalibrate the pump for the every different kind of fuel you use. You can do that by adjusting the "PumpLimit" parameter in the ECU. So basically you recalibrate the max voltage the pump can reach when you command full throttle... which will make sure the pump is able to pump enough fuel into the engine to be able to reach the MAX rpm of 98,000 rpm. You can see in the hydro diesel test the pump had already reached its max limit way before the engine reached max RPM ............which interms prevented the engine reaching its MAX RPM..... therefore lower thrust. Hope that makes sense. More test/ experimental videos on these jet engines please.

Where can one buy these jets?

I wish i had a jet engine to put it in my project go cart

So what was the result of hydrodiesel

Hey can it run on butane gas?

Can you run these jets on wd40? Expensive, yes. Fun yes!

Is like to see these tests done with "alternative" fuels as if you were in a Mad Max situation. Things like mineral spirits (varsol), turpentine or Stoddard solvent... even WD40.

hey supra twin lol we wont be twining much longer i decided to paint mine to electric pearl blue

Project farm is worth more then his weight in diamonds

New hydrodiesel please. I really want to see how it performs.

Your diesel should have race oil added if you're putting it in these (we've been using Amsoil for 4 years with no issues). Also, CO2 is your friend in those hot starts, it won't hurt the turbines like the fire. EDT: i saw later on your bottle you wrote diesel w/ oil, but you initially said "straight out of the pump" so.. good on ya i guess

No Jet B? Are we hiding the last of it in Canada.

Can you build an afterburner for one of your jet engines in your next video?

i have a request. plz make a video on how to build jet engine for rc planes

Run a flow rate test for each fuel type

Can you test nitromethane. Since it takes such little oxygen to burn, the engine should be able to inject a lot more of it, so it should make more energy.