After disassembly and measurements taken of everything a friend of mine in Australia (John Wallis) has run some calculations and found that the turbine guide vane area is roughly twice what is needed. I will do a quick fix and block off a section of the vane area with a stainless ring and give it another go. This will dramatically increase the speed of the gasses hitting the turbine blades and hopefully be enough to get it to run on its own. Keep your fingers crossed!😃
Out of all the things that can, and usually do, go wrong at a first start attempt only one thing failed today, so I consider it a really successful test. I am in no hurry to get this engine finished so a bit of R&D is pure joy and therapy for me.
Good luck with your project! Mechanical starters for turbines seem simpler and easier (it worked for the SR-71 Blackbird) but airstarting using compressed air is the way to go. Direct impingement of the turbine blades allows a smoother transition as combustion heats and takes over the process. There is a "hand off" between compressed air from the start supply, and the compressor on the inlet stage as the compressor speeds up. Best of luck to you. Home building a gas turbine engine is probably the most difficult and technically demanding, challenging project a DIYer can ever do! P.S. They make great smoke machines too! 😉
Thanks! On both my JU-01 and JU-02 engines I used 200bar compressed air to start them, very simple with only a tube pointing on the radial turbine blade tips. The amount of air needed to start this engine would be a big challenge though, so a mechanical starter is the better choice IMHO.
I think you need to spin it up faster, there doesnt seem enough revs for it to self sustain, my turbine was around that size and it needed 3000 rpm before it would run on its own
@@JOOLZNED You might be correct, I have rebuilt the starter now so the pulley belt doesent cause drag on the rotor so I might soon know what the idle revs will be.
There are a number of things that can be causing the failed start in the last video, I don´t think it is as easy as just spinning it faster. I will hook up a bunch of sensors and log all the pressures and temps inside the engine. This will give me some numbers to work with.
Men tjenare! Jo du nu är man igång igen, den här motorn lär nog inte hamna i en hoj men nåt skoj ska det nog bli av den. Hur är det med dig nu för tiden, tävlar du nåt?
@ Jo det är fint, inte tävlat något sen vi sågs sist. Var bra sugen att åka one mile i somras, men fick inte ihop det med resten av livet. Har du kört hojmotorn nåt mer efter one mile?
@@jonasanell Jag hörde i efterhand att det hade varit One Mile, missar typ allt när jag inte har sociala media. :) Jag har satt in nyare motorn i hojen men bara provstartat, stämmer beräkningarna ska jag ha närmare 300hk i den nu.
Funny you say that.An old friend of mine was using water injection on his A series mini engines 30 odd years ago.He now sells supercharger kits and six speed gearboxes for A series engines.His name is Stuart gurr and his company is called VMAXSCARTbased in molesy near Hampton court englandT@@captainkirk3000
Thanks Axel! Been out of the loop for a few years since the turbine bike build, but now I am back with a vengeance. :) Your 2:1 scale FD3 engine was the main inspiration for this project, building a more powerful engine than the JU-02 would break the bank since large billet compressors and radial turbine wheels don´t come cheap. Why not go the other way and make something that can be made with a hacksaw and some elbow grease, and go really BIG instead? If I succeed in getting some useful power out of it there is a world of possibilities for further development, like an axial stage in front like the germans did to improve flow and discharge pressure.
@@Skyisnotalimit Då det är kullagrad rotor och spraymunstycken så påverkar inte kylan så mycket, en turbobaserad motor med förångningsmunstycken hade behövt förvärmas rejält.
Man, this thing is ridiculous in all the right ways! I would suggest trimming a bit off the top though to clear your nose some more. Cool engine by the way :)
Thanks! The start procedure is very uneventful compared to the jet kicks and the turbine bike, when I get the one-way assembly in place it will hopefully just keep accelerating away from the starter. Are you talking about my snot-brake? :)
Tjenare Jörgen! Det var länge sedan jag var på Sporthoj nu, inte så MC-relaterat projekt det här heller. :) Jo det blev en rejäl makapär, nu gäller det bara att få snurr på skiten också.
fina framsteg (: såg ut som jag hade rätt med att kopplingen inte skulle släppa, men det fixar du lätt! du har väl nät för insuget så den inte andas in nån rem eller sånt dumt ? been there, done that :P
Jo det var lite av en chansning, ska testa nåt annat nu som kanske funkar bättre. Inget insugsgaller än, ska lösa det när jag fått motorn att gå för egen maskin. På tomgång är det inte så hiskeligt flås ändå.
@@Toto-en8df For now I just wanted to build something that no one has done before, but when I have it sorted out and running to 100% I will add a snowmobile belt clutch to the shaft and try to extract some horsepower from it. Might end up in a car or something one day.
@@sports_assents Check Rc Don´s channel out, it was a while since he built anything jet related but I have always admired his very organized builds. ruclips.net/video/EoztC5-8E6s/видео.htmlsi=RkelAkL3zScnvqRZ
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
After disassembly and measurements taken of everything a friend of mine in Australia (John Wallis) has run some calculations and found that the turbine guide vane area is roughly twice what is needed.
I will do a quick fix and block off a section of the vane area with a stainless ring and give it another go. This will dramatically increase the speed of the gasses hitting the turbine blades and hopefully be enough to get it to run on its own.
Keep your fingers crossed!😃
Ambitious build. Very cool.
Out of all the things that can, and usually do, go wrong at a first start attempt only one thing failed today, so I consider it a really successful test. I am in no hurry to get this engine finished so a bit of R&D is pure joy and therapy for me.
Good luck with your project! Mechanical starters for turbines seem simpler and easier (it worked for the SR-71 Blackbird) but airstarting using compressed air is the way to go. Direct impingement of the turbine blades allows a smoother transition as combustion heats and takes over the process. There is a "hand off" between compressed air from the start supply, and the compressor on the inlet stage as the compressor speeds up.
Best of luck to you. Home building a gas turbine engine is probably the most difficult and technically demanding, challenging project a DIYer can ever do!
P.S. They make great smoke machines too! 😉
Thanks! On both my JU-01 and JU-02 engines I used 200bar compressed air to start them, very simple with only a tube pointing on the radial turbine blade tips. The amount of air needed to start this engine would be a big challenge though, so a mechanical starter is the better choice IMHO.
RUclips Recomendations really know me. Awsome build! I can't wait for the next upload, good luck with the project.
Thanks!
Started on the 3rd pull, in about 12 seconds 😊
That saved me almost 6 more minutes, good job 👍 😂
You have high expectations of that Nylon strap. I would be worried about the heat melting it.
Not overly worried, I will only run the engine at idle at first where the thrust is very low. Later I´ll make a proper mount for it.
Beautiful build , sounds ready to spool away to a nice idle speed , combustion looks great
Thanks John, it sure feels like she is being held back. A couple of hours in the workshop and I´ll have something made up to fix it. :)
Ещё один гаражный любитель туррррбо реактивной тяги этакий Игорь Негода 😂
Absolutely brilliant sir
I've been following for 9 years, cool to see where you're at now!
I took a break for like 5 years to do something else for a change, but now I have been bitten by the jet bug again. :)
I think you need to spin it up faster, there doesnt seem enough revs for it to self sustain, my turbine was around that size and it needed 3000 rpm before it would run on its own
@@JOOLZNED You might be correct, I have rebuilt the starter now so the pulley belt doesent cause drag on the rotor so I might soon know what the idle revs will be.
Nice way to power heat a large area or house with large ducts.
At least expensive and smelly. :)
Super cool-SUPER SCARY!!!!
That’s awesome!
next ime my wife brings up the Harley in the spare bed room I'm showing her this
Ha ha, that should shut her up. :)
If your starting with that motor. Try with a gearing of 5:1. Your turbine need to overcome drag, so in other words. It needs to spin faster to idle
There are a number of things that can be causing the failed start in the last video, I don´t think it is as easy as just spinning it faster. I will hook up a bunch of sensors and log all the pressures and temps inside the engine. This will give me some numbers to work with.
Roligt att se dig Anders!😀 //Jonas med köpehayabusan
Men tjenare! Jo du nu är man igång igen, den här motorn lär nog inte hamna i en hoj men nåt skoj ska det nog bli av den.
Hur är det med dig nu för tiden, tävlar du nåt?
@ Jo det är fint, inte tävlat något sen vi sågs sist. Var bra sugen att åka one mile i somras, men fick inte ihop det med resten av livet. Har du kört hojmotorn nåt mer efter one mile?
@@jonasanell Jag hörde i efterhand att det hade varit One Mile, missar typ allt när jag inte har sociala media. :)
Jag har satt in nyare motorn i hojen men bara provstartat, stämmer beräkningarna ska jag ha närmare 300hk i den nu.
btw if you want to reduce engine combustion temperatures without reducing fuel flow and power output you can spray water into the inlet
I did that during the last bike run with my JU-01 engine, a water/ethanol mix. I gained 15km/h top speed on the standing mile from it.
@@Mobackenracing I've always wanted to try doing water injection using a carburetor as the injector
Funny you say that.An old friend of mine was using water injection on his A series mini engines 30 odd years ago.He now sells supercharger kits and six speed gearboxes for A series engines.His name is Stuart gurr and his company is called VMAXSCARTbased in molesy near Hampton court englandT@@captainkirk3000
Very cool!
Love it!
Thanks Axel! Been out of the loop for a few years since the turbine bike build, but now I am back with a vengeance. :)
Your 2:1 scale FD3 engine was the main inspiration for this project, building a more powerful engine than the JU-02 would break the bank since large billet compressors and radial turbine wheels don´t come cheap.
Why not go the other way and make something that can be made with a hacksaw and some elbow grease, and go really BIG instead? If I succeed in getting some useful power out of it there is a world of possibilities for further development, like an axial stage in front like the germans did to improve flow and discharge pressure.
awesome!
Imagine if the turbine ran the motor and made petrol 😂❤
Did it self-sustain?
I den kylan blir det till att för värma rejält och få upp varvtalet sen. Det kan hjälpa att försöka värma insugsluften också.
@@Skyisnotalimit Då det är kullagrad rotor och spraymunstycken så påverkar inte kylan så mycket, en turbobaserad motor med förångningsmunstycken hade behövt förvärmas rejält.
@ Förvisso, kolla på en stor motor till ett trafikflygplan, de för värmer också innan de startar.
Man, this thing is ridiculous in all the right ways! I would suggest trimming a bit off the top though to clear your nose some more. Cool engine by the way :)
Thanks! The start procedure is very uneventful compared to the jet kicks and the turbine bike, when I get the one-way assembly in place it will hopefully just keep accelerating away from the starter.
Are you talking about my snot-brake? :)
Jäklar vilken pjäs Anders!
/Jörgen med 124”Sportstern
Tjenare Jörgen! Det var länge sedan jag var på Sporthoj nu, inte så MC-relaterat projekt det här heller. :)
Jo det blev en rejäl makapär, nu gäller det bara att få snurr på skiten också.
Gööööt Moooos!! 👍
fina framsteg (: såg ut som jag hade rätt med att kopplingen inte skulle släppa, men det fixar du lätt! du har väl nät för insuget så den inte andas in nån rem eller sånt dumt ? been there, done that :P
Jo det var lite av en chansning, ska testa nåt annat nu som kanske funkar bättre.
Inget insugsgaller än, ska lösa det när jag fått motorn att gå för egen maskin. På tomgång är det inte så hiskeligt flås ändå.
Like n°101 !
Another Igor Negoda)
Very inadequate fire safely clothing. Dangerous, unwise.
What diameter has this Engine????
The rotor is 500mm in diameter and the outer casing is around 850mm.
@@MobackenracingThats Crazy. What is the Plan to use it for?
@@Toto-en8df For now I just wanted to build something that no one has done before, but when I have it sorted out and running to 100% I will add a snowmobile belt clutch to the shaft and try to extract some horsepower from it. Might end up in a car or something one day.
🙂OMG , wonderfull, so close
It sure starts to growl at the end of the last run. :)
I want to make a jet engine too can you help me
There are tons of videos on youtube with homemade jet engines, a free online jet education.
@Mobackenracing thank you do you have any specific channels you would advise me to follow especially for a centrifugal jet engine
@@sports_assents Check Rc Don´s channel out, it was a while since he built anything jet related but I have always admired his very organized builds.
ruclips.net/video/EoztC5-8E6s/видео.htmlsi=RkelAkL3zScnvqRZ
@@sports_assents www.rcdon.com
What a shame about the starter.
Looks bloody mental.
No biggie, a minor redesign and it is ready to run again.
A sprag bearing would do the job with the starter.
No Info. is this homemade?
Yes completely, even the turbine and compressor wheel.
@@Mobackenracing Very nice, I am impressed. Any thrust?
Like n°101 !