You could probably get away with just one considering how large the prop is. Or if you have the engineering skills you could couple two of these to one shaft
And the lift is being dispersed everywhere not directed can tell its got some real power! Super awesome! This thing could have some serious lift!!! Dopee!
Is the purchase cost of 6000€ for the complete set-up (including prop etc)? How is the power of the jet transferred to the prop, how efficient is the power transfer? Fuel consumption: 550ml at full power, over what time span, is that per minute, an hour or what? Thanks.
Coolness on a level most people cant even imagine. NOW, will one of you garage geniuses PLEASE take 6 of these and build a B-36? please? Pretty please?
The propeller stops spinning very quickly after you turn off the engine. It breaks somehow. Something seems to produce a certain friction that it can be heard also.
Awesome engine. I spent 5 years in Germany and loved it. Its just not the same any longer sad to say with all of the jacked immigration rules. Merkle really screwed the Great People of Germany in the pooch. May I ask what a crazy engine like this one would cost un US Dollars?
In this case the turbine is being used as a gas generator. The hot gasses go through a second stage which is basically a second turbine that is connected to the gearbox.
@@patrickfinnigan4334 so what i understand is that the "equal and opposite reaction" does not come into play1? when the gas is generated afterr combustion it shoots "forward" ... this in my understanding exerts a force "backward" ... ...after having traveled it then hits the turbine which actually spins the prop gearbox and then exits ...errr ...sideways and then backwards ... see ??? saw???
Abrupt stopping of the prop is bad news as the engine came to rest......Overheated free turbine stage bearing is what it looked like to me.....Not helped by the rapid acceleration to full speed at the end, followed by a too quick spool down period....Thats the problem letting a non engineer operate it who has no appreciation of the pitfalls. Although to be fair, the ECM should be programmed with softer ramping to make it idiot proof.... See Wren Turbines for a properly designed Turbo Shaft, (who did this trick long before Jimmy Jetcat)
Thanks. How come I don't see this model (SPT-15RX) on their website? (www.jetcatusa.com/rc-turbines/turbo-prop-turbines/) Does the propeller (hub) also come from Jetcat USA? If yes, what's the approx price for the kit ? If not, could you give the provenance?
this is not a turboprop, a turboprop has the prop IN FRONT of the intake of the jet turbine, this is a propfan. Or, better to say, a turboshaft in fact you only take the mechanical energy from the shaft. Both propfan and turboprop, works with the jet stream exausting from the jet engine AND the amount of thrust given by the prop. In your model, there's NO thrust given by the jet engine, but there's only energy given to the shaft, SO your engine is a turboshaft, like the elicopter engine.
Well, sounds like the gearbox took a crap during the second acceleration when that loud buzzing sound started. The buzzing didn't exist when it first accelerated after he said, "lets give it some beans". Then, it got even louder on the third acceleration when he decided to shut it down. And finally, that abrupt blade stop with no prop after-spin was terribly obvious. Could have been lack of any lube in the gearbox...or, simply a failed bearing and/or pinion gear. Somebody or something seriously FU'd. Back to the drawing board on this new turboprop! If it is easily repairable (new gearbox!), post another video for us, but shoot it with the phone/camera horizontal....NOT vertical !!!
Didn't even think about it failing at the end, just thought it was prop noise, but it definitely seems to be slowing that prop at the end. I did think the gear box looked too small when the video started, but I guess there isn't much torque on it, so maybe that's not an issue.
***** Yes...it's a free turbine. There's an "N1-Gas Producer", and an "N2-Power Turbine"...to which the gearbox is attached. It's also called a PSRU (Prop Speed Reduction Unit). This reduces the N2 Power Turbine's RPM by a 10:1 (or higher) ratio to allow the output shaft's RPM to accommodate the proper RPM required by the prop. In fact, where a full size twin shaft (N2-free turbine) gearbox is fully governed (as well as a governed N1), these small turbine gearboxes are NOT governed. With a fixed pitch prop, they really don't need to be, and are generally RPM limited only by LOAD (prop diameter & pitch). Once prop pitch also becomes controllable, then an integrated N1/N2 governor system will be required...and costs will really increase. Just be careful in a dive...pull throttle back quickly to prevent N2 RPM overspeed (or operate at reduced throttle settings when performing acrobatics). This SPT-15RX's gearbox had a serious bearing or gear failure. Like I said in my original post...it failed from either poor lubrication, no lubrication at all, or simply failed bearings and/or gears. Since it failed so rapidly, my guess is that it might not have had any oil inside the gearbox at all. It may have been fired up shortly after unpacking. Gearboxes must be vented, so the mfgr most always drains all oil from the engine prior to shipping. The operators might have forgotten to check that one critical item. It's happened in full size turbine engined aircraft too...ever heard of the "Turbine Luscombe"?? This was a turbine conversion twin seat, all aluminum aircraft that had been fired up and flown right after a maintenance operation that drained all oil, but no new oil was installed by the mechanic. The PSRU failed rapidly, but the turbine section miraculously survived undamaged. The turbine itself (N2) can actually live on residual oil misting for a short period of time before it fails (they actually need very little oil at all).
Can't imagine that running the engine to full power without giving the oil any time to walm up will do the turbine or the gearbox any good (because the oil will still be very thick) .Maybe this is why the gear box quit ?
Not likely....turbines most always require synthetic oil in their gearboxes as well as for lubricating the engine bearings. "Warm-up" is only required so standard petroleum oils can flow, which turbines generally do not use. Synthetic oils flow easily even at freezing temps, so synthetic oil is ready for load immediately upon start-up. Also, full size turbine oil pumps provide very little oil pressure (5 to 10psi), and these model turbines have no oil pumps, The gearbox is lubricated simply by splash contact. Because of the extreme RPM on the input shaft, very little oil is actually required to lube gears and bearings...only an "oil mist" is all that is required. Actually, too much oil in the gearbox can be just as damaging as too little. But, what DOES require warm-up is the turbine "hot section". Full size Power Turbine blades (not compressor blades) do require some initial warm-up to near operating temps before applying full power to prevent temp stresses and potential blade failures. Even these type of stresses are substantially lessened in centrifugal turbine blade assemblies because there is a supporting "disk" cast into all the individual blades. These small turbines do require some warm-up, but for a much shorter duration. If there ever is an AXIAL model turbine, warm-up will be more critical. Though, the starting procedure alone may be enough warm-up for these small turbines. So, like I said before, this SPT-15RX likely had either bad/failed/contaminated gearbox bearings from initial assembly, and/or no oil in the gearbox at all. Any of these circumstances would cause such a rapid failure. Would be nice to read an update from the OP upon tear down.Martin Wilkinson
This isn't a model turboprop. It's just a small REAL turboprop!
it's a model turboprop as in for model aircraft. :3
@@FuckignRuby he know s it's called a joke
@@FuckignRuby r/whoosh
*me at **1:30* Wow. That thing is crazy. *10 seconds later* LET'S GIVE IT SOME BEANS! Then my ears melted.
Now build an ultralight airplane and put two of those mini turboprop on it. That would be great.
You could probably get away with just one considering how large the prop is. Or if you have the engineering skills you could couple two of these to one shaft
Matt Bowen if you did that to an ultralight you would need to upgrade the wings. Those engines can accelerate VERY quickly.
Would this work on a columbian cri cri?
@@poucxs9246 there is videos on youtube of small turboprops and even model aircraft jet engines on cricri's
Thats what I was thinking
Awesome! Now I want to see you make a cooling system for it so you can give it more beans.
Honestly I would totally put this in my lawnmower. It has a 20 HP single cylinder so this should work just fine!
I want to see 2 of these on a Cricri. Poor airframe would probably VMAX in level flight.
Would love to see that Pilatus Turbo Porter. It is a fascinating plane.
Would also be fascinating in a racing plane, like a P-51 or Sea Fury.
wow it's putting out twice as much hp as the wright brothers engine!
Beans were well and truly given
That's one beast of an engine which you would not want to toy with!
Please remember your phone goes horizontal for video, and vertical for putting into your pocket.
HAHAHAHA!!!!
And the lift is being dispersed everywhere not directed can tell its got some real power! Super awesome! This thing could have some serious lift!!! Dopee!
Make a scale C-130
can you replace the prop with one with a larger diameter but 3 blades?
Also, 550ml of fuel consumption? What do you mean?
Say no to vertical video!
Say no to be anal
Say no to old Mila Kunis.
Is the purchase cost of 6000€ for the complete set-up (including prop etc)? How is the power of the jet transferred to the prop, how efficient is the power transfer?
Fuel consumption: 550ml at full power, over what time span, is that per minute, an hour or what?
Thanks.
That's probably per minute.
Can you mount a pulley or sprocket on the output shaft and use this with some DC PM motors for and electric drivetrain and make one scary go kart?
Perfect for my bedroom
That thing is nuts.
Might be perfect for my EV range extender project! Yeah!
That thing is a beast
Coolness on a level most people cant even imagine. NOW, will one of you garage geniuses PLEASE take 6 of these and build a B-36? please? Pretty please?
Is it a geared turbine or a free power turbine
The propeller stops spinning very quickly after you turn off the engine. It breaks somehow. Something seems to produce a certain friction that it can be heard also.
Was even thinking of a clutch or flywheel like ..in a helicopter, nice engines that we don't see any practical use of them.
I would like to know how is this reduction gear. Is it planetary gear? Thanks
Really cool bro excellent performance
Guy, if you are spending +20k $ in a turboprop and TX, maybe you can buy yourself a 20$ wind noise protection for your camera ?
Vertical filming 👍 But awesome sound
Very nice, just like the real thing,but, smaller scale. That propeller is huge, and was turning serious rpms! Remember, the main
how much thrust does that prop make?
The main turbine is n1, or gas producer. In the exhaust diffuser, is n2, or power turbine driving the propeller gearbox.
WOW! Lets see that bad boy in your
aircraft, hurry up!
What is the max thrust in Kg?
Also weren't you worried that the bench would fall cause of the thrust?
20hp would produce around 30kg of thrust
At least 50 kg thrust
is it a variable pitch prop?
very good .. beautifuly made .. what fuel u used ? is it gas or liquid ?
At what point does it go from being a large RC turboprop to a small commercial turboprop???
Where did you find your propeller?
Let's give it some beans!!!!!
Freaking awesome!!
Unreal !!!!! 🤩🤩🤩🤩🤩🤩
good that no one is sucked into the prop
Excuse me, I'm really interested to buy one of this, where can I buy it? And how much it costs?
WOW! That's awesome!
The beans FTW!
That is scary awesome!!!
can you control the prop pitch?
wonder if you can strap that to a hang glider or something and it would fly?
Let us play some Fruit Ninja!
Let's give some beans! Haha!
What is the thrust?
Whwre you buyed this trubine?
How many lbs of thrust?
holly good damn fuck... the temperature reading is going up like a warp drive indicator ;)
That's totally normal in a jet or turboshaft.
That is a amazing,and can you help me ? I have one and I hope to know how to be connected with tube,if you have a manual, that is good,thanks
bearings and blades cooked. do a cool down
Sooo freakin' cool, i'll buy one turboprop some day..
I just need money xD
I need one of these to cool my MacBook when I play Roblox.
Weren't you worried that the bench would fly off on you?
I'm glad I don't live next door to this fellow.
Im kinda sad that I dont, I'd be having a peek all the time!
Damn this could perhaps power some microlight.
Awesome 😊. Could you explain me step by step how to build it? I have to build a turboprop engine for a college project.
Awesome! How heavy is this? Fuel consumption at 21hp?
weight 4800 550ml / min
*****
I could picture a couple of these on an ultralight!
HarryHydro making 550ml/minute?
no way...
+Kasper H . please send me your email.
kasperholger@gmail.com
how much thrust?
det ser fedt ud :D
Incredible
Awesome engine. I spent 5 years in Germany and loved it. Its just not the same any longer sad to say with all of the jacked immigration rules. Merkle really screwed the Great People of Germany in the pooch. May I ask what a crazy engine like this one would cost un US Dollars?
Mich B All Merkelsteinbergmannwitz was doing was following the orders of the Jewish establishment. Orders for turboprops are far more preferable.
Can someone please explain why does the turbine point "backwards" in a Turboprop ..
I think I know the obvious answer being the PTO ...but REALLY?
In this case the turbine is being used as a gas generator. The hot gasses go through a second stage which is basically a second turbine that is connected to the gearbox.
@@patrickfinnigan4334 so what i understand is that the "equal and opposite reaction" does not come into play1?
when the gas is generated afterr combustion it shoots "forward" ... this in my understanding exerts a force "backward" ... ...after having traveled it then hits the turbine which actually spins the prop gearbox and then exits ...errr ...sideways and then backwards ... see ??? saw???
That is correct.
LOL kasper den er for syg, den lyder alt for vild :o) Hilsen Arrrowman
I wonder how this would work on a sailplane.
Abrupt stopping of the prop is bad news as the engine came to rest......Overheated free turbine stage bearing is what it looked like to me.....Not helped by the rapid acceleration to full speed at the end, followed by a too quick spool down period....Thats the problem letting a non engineer operate it who has no appreciation of the pitfalls. Although to be fair, the ECM should be programmed with softer ramping to make it idiot proof.... See Wren Turbines for a properly designed Turbo Shaft, (who did this trick long before Jimmy Jetcat)
it seems that blades have very little pitch , give them more , and show us ;-)
Can you tach me make jet engine I use in the cycle
Please more Videos
You could put this in a small plane lmfao. Model MY ASS 🤣 absolutely badass though.
i would love to have a play with some of these engines
Jetcat build the fastest turboprops in the world
Nice! Is that a two shafts engine or a single shaft (with prop clutch)?
single shaft engine, separate turbine that connects to the prop with another shaft and a gearbox
imagimagine a drone made out of four of these 80 HP. you could pick up a 175 pound man.
WHAT ARE YU GOING TO PUT THIS IN ?
He mentioned in the video that he is going to put it in his Pilatus Porter. Never mentioned the aircrafts scale though.
How long can it reliably stay at max rpm? (until it starts needing an overhaul)
How many pounds can it theoretically lift?
Should be around 200 roughly?
Thanks.
How come I don't see this model (SPT-15RX) on their website?
(www.jetcatusa.com/rc-turbines/turbo-prop-turbines/)
Does the propeller (hub) also come from Jetcat USA? If yes, what's the approx price for the kit ? If not, could you give the provenance?
Guillaume Beland slap that shit on you back! 200lbs that's awesome
Crazy 👍🏻
well that was fucking cool.
how to make it plz plz make a vedio
World's best idea: throw this motor on a piper cub :P
550ml on 1hour full power?
550ml/ min on full power
It goes so fast that you can barely even see it
perfect ...
Two of these things can easily power a ultra light
Colomban Cri-Cri turboprop!
holy sheet!
Two thirds of the screen area was wasted.
Я думал лавочка улетит
This can probably power a Boeing 737
Wouldn't this be more of a turboshaft found in helicopters
They have a 90 degree gearbox for helicopters too
this is not a turboprop, a turboprop has the prop IN FRONT of the intake of the jet turbine, this is a propfan. Or, better to say, a turboshaft in fact you only take the mechanical energy from the shaft. Both propfan and turboprop, works with the jet stream exausting from the jet engine AND the amount of thrust given by the prop. In your model, there's NO thrust given by the jet engine, but there's only energy given to the shaft, SO your engine is a turboshaft, like the elicopter engine.
I think you are a bit confused with many of the terms you try to look smart to talk about.
can't even see the blade
how do people have enough money to buy a $4000 turboprop and not have the sense to turn the camera sideways?
Because there is no freaking logic in that relashionship.
cool stuf..lets put in a plane
Well, sounds like the gearbox took a crap during the second acceleration when that loud buzzing sound started. The buzzing didn't exist when it first accelerated after he said, "lets give it some beans". Then, it got even louder on the third acceleration when he decided to shut it down. And finally, that abrupt blade stop with no prop after-spin was terribly obvious. Could have been lack of any lube in the gearbox...or, simply a failed bearing and/or pinion gear. Somebody or something seriously FU'd. Back to the drawing board on this new turboprop! If it is easily repairable (new gearbox!), post another video for us, but shoot it with the phone/camera horizontal....NOT vertical !!!
Didn't even think about it failing at the end, just thought it was prop noise, but it definitely seems to be slowing that prop at the end. I did think the gear box looked too small when the video started, but I guess there isn't much torque on it, so maybe that's not an issue.
Isn't this a free turbine?
***** Yes...it's a free turbine. There's an "N1-Gas Producer", and an "N2-Power Turbine"...to which the gearbox is attached. It's also called a PSRU (Prop Speed Reduction Unit). This reduces the N2 Power Turbine's RPM by a 10:1 (or higher) ratio to allow the output shaft's RPM to accommodate the proper RPM required by the prop. In fact, where a full size twin shaft (N2-free turbine) gearbox is fully governed (as well as a governed N1), these small turbine gearboxes are NOT governed. With a fixed pitch prop, they really don't need to be, and are generally RPM limited only by LOAD (prop diameter & pitch). Once prop pitch also becomes controllable, then an integrated N1/N2 governor system will be required...and costs will really increase. Just be careful in a dive...pull throttle back quickly to prevent N2 RPM overspeed (or operate at reduced throttle settings when performing acrobatics).
This SPT-15RX's gearbox had a serious bearing or gear failure. Like I said in my original post...it failed from either poor lubrication, no lubrication at all, or simply failed bearings and/or gears. Since it failed so rapidly, my guess is that it might not have had any oil inside the gearbox at all. It may have been fired up shortly after unpacking. Gearboxes must be vented, so the mfgr most always drains all oil from the engine prior to shipping. The operators might have forgotten to check that one critical item. It's happened in full size turbine engined aircraft too...ever heard of the "Turbine Luscombe"?? This was a turbine conversion twin seat, all aluminum aircraft that had been fired up and flown right after a maintenance operation that drained all oil, but no new oil was installed by the mechanic. The PSRU failed rapidly, but the turbine section miraculously survived undamaged. The turbine itself (N2) can actually live on residual oil misting for a short period of time before it fails (they actually need very little oil at all).
Can't imagine that running the engine to full power without giving the oil any time to walm up will do the turbine or the gearbox any good (because the oil will still be very thick) .Maybe this is why the gear box quit ?
Not likely....turbines most always require synthetic oil in their gearboxes as well as for lubricating the engine bearings. "Warm-up" is only required so standard petroleum oils can flow, which turbines generally do not use. Synthetic oils flow easily even at freezing temps, so synthetic oil is ready for load immediately upon start-up. Also, full size turbine oil pumps provide very little oil pressure (5 to 10psi), and these model turbines have no oil pumps, The gearbox is lubricated simply by splash contact. Because of the extreme RPM on the input shaft, very little oil is actually required to lube gears and bearings...only an "oil mist" is all that is required. Actually, too much oil in the gearbox can be just as damaging as too little.
But, what DOES require warm-up is the turbine "hot section". Full size Power Turbine blades (not compressor blades) do require some initial warm-up to near operating temps before applying full power to prevent temp stresses and potential blade failures. Even these type of stresses are substantially lessened in centrifugal turbine blade assemblies because there is a supporting "disk" cast into all the individual blades. These small turbines do require some warm-up, but for a much shorter duration. If there ever is an AXIAL model turbine, warm-up will be more critical. Though, the starting procedure alone may be enough warm-up for these small turbines. So, like I said before, this SPT-15RX likely had either bad/failed/contaminated gearbox bearings from initial assembly, and/or no oil in the gearbox at all. Any of these circumstances would cause such a rapid failure. Would be nice to read an update from the OP upon tear down.Martin Wilkinson