HAHA! I try to do my testing during the daytime when less people are around or home! The new shop will be great as I won't have to worry about the Neighbours!
I moved into a new neighborhood, woke up, started my unsilenced bike. A couple of doors opened, some guys came out, peeked, went back in. I thought, "oh boy, this us going to start a problem!" A couple of seconds go by....now the neighbors are warming up their bikes, the old dude next door pulls out his 69 yellow Camaro, glass packed, straight pipes, ahhh, this is going to be just fine!
I can't imagine it being easy posting as much as you do, you gotta have the passion, it's really refreshing... Keep it up. Greetings from South Africa.
Nothing like the sound of turbines AND props combined... I used to live right next to Basler Turbo conversions, and listened to the sound of turboprops being tested on a regular basis. I actually miss that sound. The howl of the turbine and the droning of the prop, used to put me to sleep as a kid.
That Prop-mount still appears critical to my oppinion. The center tube overlap seems to be too little in order to withstand such forces radially over the time! 🥶
Yea as I mentioned I would have liked to see that main shaft come out from the gearbox more. This would be a simple solution. I believe our prop adapter method will work great. It's been used by Wrens for many years now with success.
i am wondering do know how to setup a smoke pump with jr radio throttle is the master and the smoke pump channel as the slave i cant find any out there for jr/dfa radios thank keep the videos up mate they are very good full of information bud
What a beauty. Dont forget there is a YT video of rc Porter with a turbo prop engine that can pitch the propeller. The sound equals to the 1:1 turbo prop engine. I know this project is already a costly project, but this beauty deserves it ;-).
Hey man, I know I don’t comment as much anymore but I have been watching all your vids since I subscribed. (When you did the L-39 build series), I enjoy your videos and they are very helpful. Keep up the good work man!
HAHA! Thanks Larry. Yea as I was editing the video I had that thought in my head that the camera angle didn't accurately show how far away the stool way from the prop and it looked scary!
After many years in aviation I would suggest that your prop adapter have more going through the spinner to help better support and center the prop. Putting it on the front part of the prop washer does not do what you may think it would do. Ask me how I know?
Art Swanson....Unfortunately Kingtech's shaft is way too short for a spinner and prop to safely be mounted. The idea of the machined Prop adaptor was actually taken from a Wren Turboprop that is local here. Kingtech was send photos of the adaptor so hopefully design can be changed.
@@aaronforthRC Lets hope. It would be better with at least another 3/8" or 10mm through the spinner backplate. If the prop bolt comes loose it will cause major damage to the aircraft and engine.
i really want to gear reduce a small turbo prop like this and put it on a minibike as its drive engine, run the exhausts to the rear behind the seat a ways back and add an afterburner. mode 1: turbo shaft directly drives gear reduced transmission, this has a manual clutch as well as a CVT to remove shifting and add a redundancy in case of a runaway engine. mode 2: Jet prop Mode. in mode 2, the clutch is disabled at speed (aka disengaged from the motor), the engine is revved to its full AB speeds, then fuel and spark are dumped into the booster stage of the tailpipe and the bike is no longer mechanically driven by the turbo engine, it is instead pushed by its thrust, and the added thrust of the ReHeater/AB.
Very nice Turboprop turbine! I like the Pilatus PC-6 Porter and also the fact that KingTech is very local to me vs Turbine Solutions in which I have one in my Pilatus PC-21. You’re making me wanna get one! ; )
Just saw your article in Ama! Thanks for your tips. I am just starting out with turbines and I have help…wondering if you have seen any issues with kingtech tps? I have a new pc21 which I am putting the 100tp …any thoughts greatly appreciated!
Hi Jonathan, I liked all the camera views you were showing during the test run. What amount of thrust was the owner hoping to see? Have you decided on the fuel capacity you will put in the airframe based on the 5 1/2 minutes for one liter? You and Katie stay safe.
Hello Don! Thanks! Always trying to improve! I think he had a higher number is his head but it performed as it should have. I think around 60 ish oz will be perfect! Depending on final weight we may be in the upper end of the throttle curve for a lot of the flight so that will give a very reasonable flight time.
I am very very new to rc flying and these rc turbine jet engines, and I have one question. Do you know like for example on 50% throttle does it use like 50% less gas or is it always different? Sorry if my questions are so basic im super new, btw nice review I liked and subscribed!
Nick! Are you my cousin!? I have a cousin that has the same name! There are going to be variations in this. If you have the thrust curve setup or adjusted so at 50% stick your at 50% throttle that it may be close to 50% the max fuel burn. I’m not sure if the fuel burn curve is linear through the rpm range though. I would assume not but just a guess.
@@thelightersideofrc Haha is your cousins last name Lipman also? And yeah I want to get into rc flying and I want to be fuel efficient and i have always questioned like say its at 30% does it have 30% lower fuel burn from max.
Get some of that exhaust pointing backwards :P more thrust, up to 10ish %? I have no clue. Also, isn't the deflection of the turbine exhaust and compressor pointing aft removing thrust?
In something like the PC-21 the scale tips have a slight aft facing layout to them. In this pc-6 this is the scale tips. Great questions on the thrust coming out of the engine. As it's directed sideways and not back I don't believe there is any effect on opposing thrust to the prop.
The Kingtech K45 engine in it's simplest form (pure jet engine) only produces 4.5Kg of thrust where as his Turboprop setup gives him 12.5Kg...a turbo prop sacrifices thrust velocity in exchange for thrust strength or power... i have no idea what the numbers are but i'm assuming the leftover thrust coming out those exhausts after having spun the power turbine/gearbox/prop is negligible... probably a small fraction of the initial 4.5Kg thrust the jet engine is capable of and coming out much slower than the plane's cruising speed so no help at all. i've always found single turbo prop airplane's exhaust pipes to be oddly shaped and quite long... it's mostly meant to keep the heat&gases out of the cabin & away from the engine's air intake when starting up&taxiing as well as away from your tail control surfaces when in flight(hot air is not a pilot's friend).Pointing the exhaust backwards would just increase your chances of getting poisoned and or starving the engine of oxygen when on the ground. At cruising speed the drag from the exhaust pipe probably offsets whatever thrust you could gain by pointing it backwards...
HI Jonathan, the engine run 5H30 !!!!! have you some neighbours near your house ? amazing test and the turbine is not very hot. to be continued.....fast. bonjour de france
I think it depends on the prop used and spinner, on my installation of the K45TP I have no issued the spinner is a Carbonfiber from Desert Aircraft, and the prop is biela Turbo prop...the back plate is thin.. I should also added that the Teflon tubing can be used and it’s actually provided with the K100TP, perfectly safe... RPM is a little high.....should be keep at about 5k to unload for 7k max in the air...that’s from Kingtech.. ;)
Thanks Daniel. Totally depends on the prop/spinner combo. With that I think they could have added slightly more depth to the output shaft as more depth should work with any combo of think backplate. Yes, the one I referred to in the video, the fellow cut off the very end of the metal tube at the gearbox and installed a piece of Festo tubing that was about 1" long. I agree on the teflon tubing. Great option.
@@thelightersideofrc Ok but..... is your prop a turbo prop or a gas prop...there's a difference, and the RPM is too high, you risk seizing the gearbox seize.... ;) anyway I got lots of flights on mine...great motor for sure.
@@thelightersideofrc Yup, in a turboprop like this there is no direct connection between the compressor/turbine shaft, and the propeller shaft. There is another turbine in the exhaust stream of the gas turbine which is referred to as the "Free Power" turbine, this is what extracts energy from the exhaust stream and converts it back into rotational energy to drive the propeller. In this situation the main turbine is often referred to as a "gas generator" as that is effectively what it is doing, generating gas to drive the free power turbine.
Thx for the info. I just never thought about looking it up. I always noticed rotor heads and props never turned when these engines was at start up and low rpm but never thought to look into it. I think I am going to have to now. It is interesting there is no direct connection. I guess if you have a prop strike it is less likely to completely destroy the turbine.
30 to 1 reduction is done entirely in the small gearbox you see, a final "power" turbine sits right before the exhaust splits up and is connected ONLY to the gearbox, in this case the power turbine is probably just a tiny bit bigger than the generator turbine so instead of spinning @ 160k rpm like the engine, it's probably spinning @ anywhere between 100-140K maybe more, still way to fast for a prop so it's reduced 30-1... So essentially, the 30-1 is direct gear drive reduction but just to mess with you? the way you get that gearbox to start spinning in the first place is very similar to a torque converter except instead of fluids it uses hot gases(which also happens to be a fluid lol) Technically, you could probably hold on to the propeller during start up and prevent it from ever spinning...(i'm just spit balling here, 30-1 sounds like lots of torque and 30+ years ago i got my fingers constantly mangled by a puny .49 Cubic inch nitro motor so please don't try it lol) Enjoy your headache :/ I'd love to build an electric bike or reverse trike and add a small gas turbine/electric generator pack on it for shits & giggle... probably a slightly bigger turbine running @ 100K rpm coupled with a similar 30-1 reduction to spin the generator @ around 3000rpms (or whatever rpm it requires) Based as much as possible on Chysler's turbine car from the 60s... Capable of running on anything from jet fuel to Chanel #5, a bottle of Vodka,ethanol,diesel,gasoline & even used dirty cooking oil (filtered&treated i'm sure). Using some form of heat exchanger to extract as much heat from the exhausts in order to pre-heat air before it gets into the engine to improve fuel efficiency as well as reducing noise by a LOT & lowering the exhaust temperatures for safety... My question is; how helpful could heating the air (and probably the fuel when it's diesel/cooking oil etc) before going in the engine be? considering it's just a single stage compressor/low cost inefficient RC engine... A little? a lot? not at all? nobody knows ? Would it be worth the effort/added parts?
I guess there is someone out there that could reproduce a piece with longer snout section , depending on how it is made in first place, but cost can get out of hand..
Wonder how long it’ll be before someone makes a variable pitch prop for a turbo prop This would be an awesome motor for a surveillance drone (military/police) Could get a lot of sensory equipment airborne with this much power Thanks for the upload sir !
@@thelightersideofrc have you ever wondered wether the exhaust gas of a turboprop is hot enough to maybe add an afterburner just for fun? If the exhaust pipes were directed properly it should be possible to get prop thrust and optionally afterburner thrust Please tell me if my idea is way off
I just bought a Legend hobbies Fedex grand caravan c-208, a 15 pound model,85 inch wingspan. Would this engine appropriately fit for this aircraft, as far as performance/ thrust,weight??. It calls out for 35 to 40 cc gas. It would be neat to see a turbine on this.....
So you go to a 21" prop at 12 pitch or decrease your pitch to a 10" at 22" dia will increase your rpm it will increase your throttle response . Usually, run at 6000-6500 rpm on a similar gas engine, should have lots of up line trust.
Wonder if it'll profit from a larger prop or a 4-blade. Static RPM seems a bit high. Usually it unloads quite a bit in flight. On the other hand the PC-6 is a slow plane...
Yea another thought I had after the video is will the engine perform different when it’s strapped to the plane which is more aerodynamic than a big test stand with lots of different surfaces and shapes behind the prop.
The ambient pressure is decreased due to the elevation. As a result, so will the thrust be decreased. Rough estimate is that the thrust at sea level might be around 30.13 lbf at the same ambient temperature. At 59 F, to try and move towards ISO conditions, might be lesser than the above stated number. Thrust without reference conditions is meaningless.
Hey Bud, Love the channel and content. I have the K60 TP and go through the exact start up procedures but my GSU give me a mix message. It reads "Running" like normal but then it switches to "CHECK TPR", and continues to switch between these two messages. Because of this error message it stays at idle and will not read my throttle input. I have reached out to KT but no reply and there is nothing about this error code in the manual. Any ideas? Any help would be appreciated.
@@thelightersideofrc Thanks for the reply, I am on Jeti but guess what, I figured out the issue. Turns out the RPM sensor had a bad solder job from factory. One of the wires wasn't making a connection so I resoldered it and Violà!! Everything is finally working perfect. I am now just waiting on a 24x22 Beila 3 blade Prop and Spinner so I can maiden her. This is on a HANGER 9 Japanese Oscar, it will turn some heads at local warbird events. Have a Happy & Safe New Year my friend. Cheers.
coming from years of experience in 100cc plus gas engines, that prop hub arrangement seems just dangerous in so many ways, and the "fix" does little to make it better. A prop that large (at least on gas engines) require a multi bolt arrangement, with the center spline coming a good bit the depth of the prop. Granted a turboprop is not generating the kind of torque or stress that a gas engine does, but that size prop needs some considerable safety margin when it comes to securing it. Just my thoughts. Even a couple of shear pins in the hub going into the back of the prop a 1/4" would be the minimum I would do.
The power delivery of a turboprop is VERY smooth compared to a piston engine. The power pulses and vibration of a piston engine, and the possibility of a kickback, is what makes the prop hub have to be so substantial when compared to a turboprop. I wouldn't be afraid of the single bolt hub on a turbo..
Awesome 😊, I know you purchased it. But casually, do you know how to build a basic turboprop engine? Or perhaps, some manual or planning who can help me to build it? It's for a college project.
Building one from scratch no. I wouldn’t even suggest trying it. I say that as I’m still not 100% sold on any of the turbo props out there! Haven’t seen any myself that go the 25 h distance and go back for bearing service. I know there must be some but not many!
Great video I have the same problem on my K100tp as the prop shaft is too short to support the prop properly. Do you know where I can get a prop adapter like yours? Thank you
I think it's a poor oversight on Kingtech's part and they claim its normal and proper. the one in the video was machined from a local fellow. The owner organized it so i'm not sure the details.
I feel vindicated...Hahaha !!! 😄😄😄 Glad I'm not not the only one that says " Tur bine" instead of " Terban"...Also since you "Beta testing " this engine, I was thinking that you Email them and tell them they need to upgrade/redesign that prop hub assy...Not ev'ry body has a CNC or lathe to turn a prop holder extension....Cheers !!!!
@@thelightersideofrcThanks for reading my comment, what if we connect the turboprop's shaft to a cvt gearbox and run it??? I am looking forward to try it if the power of this engine is not enough then maybe I will have to Buy a PBS TS150.
Thanks for the response do you happen to have his contact info and ask if his machinist would be able to make up another one for purchase. Unfortunately I don’t have a machinist on speed dial.
@@thelightersideofrc I want to create a combined cycle genset, that starts with a turbine engine then feeds a sterling engine with the waste heat. But i think i've calculated the TE of this turbine at about 4%, lol.
For the amount of push it's pretty reasonable consumption. If you were to use a turbine that's giving a 28lb output thrust 32oz of fuel might last 2 to 2.5 min.
Support our creative efforts here: Patreon Account: www.patreon.com/thelightersideofrc
Your neighbors probably love you and the sound of jets
HAHA! I try to do my testing during the daytime when less people are around or home! The new shop will be great as I won't have to worry about the Neighbours!
I moved into a new neighborhood, woke up, started my unsilenced bike. A couple of doors opened, some guys came out, peeked, went back in. I thought, "oh boy, this us going to start a problem!" A couple of seconds go by....now the neighbors are warming up their bikes, the old dude next door pulls out his 69 yellow Camaro, glass packed, straight pipes, ahhh, this is going to be just fine!
Haha! Awesome 😎
I can't imagine it being easy posting as much as you do, you gotta have the passion, it's really refreshing... Keep it up.
Greetings from South Africa.
Thanks Nicolas! Yes it's a lot of work but I love it! 😎
21:00 thanks for moving that sketchy chair, so relieving
LOL. Thanks!
Gotta love the vagueness of kingtech
HAHA. Yea that's about right!
Nothing like the sound of turbines AND props combined... I used to live right next to Basler Turbo conversions, and listened to the sound of turboprops being tested on a regular basis. I actually miss that sound. The howl of the turbine and the droning of the prop, used to put me to sleep as a kid.
Thanks and I totally agree!😊
@@thelightersideofrc 🍻
Keep playin with 'em... 👍
That Prop-mount still appears critical to my oppinion.
The center tube overlap seems to be too little in order to withstand such forces radially over the time! 🥶
Yea as I mentioned I would have liked to see that main shaft come out from the gearbox more. This would be a simple solution. I believe our prop adapter method will work great. It's been used by Wrens for many years now with success.
Impressive little engine! Thanks for watching! If you have a moment, check out my new site! www.thelightersideofrc.com/
i am wondering do know how to setup a smoke pump with jr radio throttle is the master and the smoke pump channel as the slave i cant find any out there for jr/dfa radios thank keep the videos up mate they are very good full of information bud
I want to strap it to a bicycle do u tink it got enough power ?
Most of the engines will give some push. But if you want to feel it a 170 or more would be the ticket!
What a beauty. Dont forget there is a YT video of rc Porter with a turbo prop engine that can pitch the propeller. The sound equals to the 1:1 turbo prop engine. I know this project is already a costly project, but this beauty deserves it ;-).
Thanks Red Bear RC! I don't know if the owner would go for that but would sure be cool!
I would love to see an R/C quadcopter with turboprops and variable pitch props. That would be the SHIZNIT!
Hey man, I know I don’t comment as much anymore but I have been watching all your vids since I subscribed. (When you did the L-39 build series), I enjoy your videos and they are very helpful. Keep up the good work man!
Hello Rikus. I know your out there watching!😎
I haven't seen anything on this so far but I keep thinking of these units as a range extender for electric cars hooked up to 100 plus amp alternator
The problem with them is they are not fuel efficient. Even compared to a large gasoline engine in a truck.
I saw that kind of screw Mechanism on a turbo timber from Eflight
For the thrust? Like a ducted fan?
@@thelightersideofrc no for the nose cone screw
Nice pal. Barstool in front of prop scared me. 🤪
HAHA! Thanks Larry. Yea as I was editing the video I had that thought in my head that the camera angle didn't accurately show how far away the stool way from the prop and it looked scary!
Just Wow!! That's going to pack a punch👍😄
Should make for a fun pc6!
After many years in aviation I would suggest that your prop adapter have more going through the spinner to help better support and center the prop. Putting it on the front part of the prop washer does not do what you may think it would do. Ask me how I know?
Thanks for the tip Art!
Art Swanson....Unfortunately Kingtech's shaft is way too short for a spinner and prop to safely be mounted. The idea of the machined Prop adaptor was actually taken from a Wren Turboprop that is local here. Kingtech was send photos of the adaptor so hopefully design can be changed.
@@aaronforthRC Lets hope. It would be better with at least another 3/8" or 10mm through the spinner backplate. If the prop bolt comes loose it will cause major damage to the aircraft and engine.
I agree...but we have to work with what we have
i really want to gear reduce a small turbo prop like this and put it on a minibike as its drive engine, run the exhausts to the rear behind the seat a ways back and add an afterburner.
mode 1: turbo shaft directly drives gear reduced transmission, this has a manual clutch as well as a CVT to remove shifting and add a redundancy in case of a runaway engine.
mode 2: Jet prop Mode.
in mode 2, the clutch is disabled at speed (aka disengaged from the motor), the engine is revved to its full AB speeds, then fuel and spark are dumped into the booster stage of the tailpipe and the bike is no longer mechanically driven by the turbo engine, it is instead pushed by its thrust, and the added thrust of the ReHeater/AB.
That would be a fun project!
Very nice Turboprop turbine! I like the Pilatus PC-6 Porter and also the fact that KingTech is very local to me vs Turbine Solutions in which I have one in my Pilatus PC-21. You’re making me wanna get one! ; )
Do it!!!!😉😎
I am in the same position, PC 21 and TS turbine, shopping for options
@@thelightersideofrc HaHAA! I can tell my wifey you made me do it! ; ),
@@gogianyee5002 exactly! I’ll take the blame!😎
😋👌
Just saw your article in Ama! Thanks for your tips. I am just starting out with turbines and I have help…wondering if you have seen any issues with kingtech tps? I have a new pc21 which I am putting the 100tp …any thoughts greatly appreciated!
Thanks! Most TP's seem to be working well now.
@@thelightersideofrc thank you Sir!
Hi Jonathan,
I liked all the camera views you were showing during the test run. What amount of thrust was the owner hoping to see? Have you decided on the fuel capacity you will put in the airframe based on the 5 1/2 minutes for one liter? You and Katie stay safe.
Hello Don! Thanks! Always trying to improve! I think he had a higher number is his head but it performed as it should have. I think around 60 ish oz will be perfect! Depending on final weight we may be in the upper end of the throttle curve for a lot of the flight so that will give a very reasonable flight time.
I am very very new to rc flying and these rc turbine jet engines, and I have one question. Do you know like for example on 50% throttle does it use like 50% less gas or is it always different? Sorry if my questions are so basic im super new, btw nice review I liked and subscribed!
Nick! Are you my cousin!? I have a cousin that has the same name!
There are going to be variations in this. If you have the thrust curve setup or adjusted so at 50% stick your at 50% throttle that it may be close to 50% the max fuel burn. I’m not sure if the fuel burn curve is linear through the rpm range though. I would assume not but just a guess.
@@thelightersideofrc Haha is your cousins last name Lipman also? And yeah I want to get into rc flying and I want to be fuel efficient and i have always questioned like say its at 30% does it have 30% lower fuel burn from max.
@@thelightersideofrc You should do a test with one of the rc turbo engines and see if on 50% what fuel burn it has, that would be a cool test
Yea. Same last name as you.
Gas turbine efficiency falls off pretty quick as you reduce power. Due to the lowered pressure ratios inherent in lower power settings.
I clicked on this video because I thought it was the Shamwow guy in the thumbnail.
😂😂😂🤔
@@thelightersideofrcGood stuff, glad you have a sense of humor. Fly safe👍😎😁
I don't know it seems like some pretty serious side of RC. I mean that thing probably costs by itself more than my whole FPV setup.
Haha! Nicely put! Yea they aren’t cheap by any means. But sure cool! 😎
Get some of that exhaust pointing backwards :P more thrust, up to 10ish %? I have no clue. Also, isn't the deflection of the turbine exhaust and compressor pointing aft removing thrust?
In something like the PC-21 the scale tips have a slight aft facing layout to them. In this pc-6 this is the scale tips. Great questions on the thrust coming out of the engine. As it's directed sideways and not back I don't believe there is any effect on opposing thrust to the prop.
The Kingtech K45 engine in it's simplest form (pure jet engine) only produces 4.5Kg of thrust where as his Turboprop setup gives him 12.5Kg...a turbo prop sacrifices thrust velocity in exchange for thrust strength or power...
i have no idea what the numbers are but i'm assuming the leftover thrust coming out those exhausts after having spun the power turbine/gearbox/prop is negligible...
probably a small fraction of the initial 4.5Kg thrust the jet engine is capable of and coming out much slower than the plane's cruising speed so no help at all.
i've always found single turbo prop airplane's exhaust pipes to be oddly shaped and quite long... it's mostly meant to keep the heat&gases out of the cabin & away from the engine's air intake when starting up&taxiing as well as away from your tail control surfaces when in flight(hot air is not a pilot's friend).Pointing the exhaust backwards would just increase your chances of getting poisoned and or starving the engine of oxygen when on the ground.
At cruising speed the drag from the exhaust pipe probably offsets whatever thrust you could gain by pointing it backwards...
Very Nice, thanks for the vid!
Thank you too for watching!
HI Jonathan, the engine run 5H30 !!!!! have you some neighbours near your house ? amazing test and the turbine is not very hot. to be continued.....fast. bonjour de france
Thanks Philippe! Yea I have neighbors all around me! They haven’t complained.....yet😉
I think it depends on the prop used and spinner, on my installation of the K45TP I have no issued the spinner is a Carbonfiber from Desert Aircraft, and the prop is biela Turbo prop...the back plate is thin..
I should also added that the Teflon tubing can be used and it’s actually provided with the K100TP, perfectly safe...
RPM is a little high.....should be keep at about 5k to unload for 7k max in the air...that’s from Kingtech.. ;)
Thanks Daniel. Totally depends on the prop/spinner combo. With that I think they could have added slightly more depth to the output shaft as more depth should work with any combo of think backplate.
Yes, the one I referred to in the video, the fellow cut off the very end of the metal tube at the gearbox and installed a piece of Festo tubing that was about 1" long. I agree on the teflon tubing. Great option.
@@thelightersideofrc Ok but..... is your prop a turbo prop or a gas prop...there's a difference, and the RPM is too high, you risk seizing the gearbox seize.... ;) anyway I got lots of flights on mine...great motor for sure.
This is the prop reccomend by Kingtech
The size yes....but I don’t think mezlick (spelling) does any turbo prop ;)
30 to 1 reduction. I don’t know much about turboprops, so is the reduction a gear drive or something like a torque converter for a auto transmission?
Hello Kevin. There is no direct connection to the engine. It is another section that is driven by thrust. I think!😂
@@thelightersideofrc Yup, in a turboprop like this there is no direct connection between the compressor/turbine shaft, and the propeller shaft.
There is another turbine in the exhaust stream of the gas turbine which is referred to as the "Free Power" turbine, this is what extracts energy from the exhaust stream and converts it back into rotational energy to drive the propeller.
In this situation the main turbine is often referred to as a "gas generator" as that is effectively what it is doing, generating gas to drive the free power turbine.
Thx for the info. I just never thought about looking it up. I always noticed rotor heads and props never turned when these engines was at start up and low rpm but never thought to look into it. I think I am going to have to now.
It is interesting there is no direct connection. I guess if you have a prop strike it is less likely to completely destroy the turbine.
Thank you!!!!! Great info!😎
30 to 1 reduction is done entirely in the small gearbox you see, a final "power" turbine sits right before the exhaust splits up and is connected ONLY to the gearbox, in this case the power turbine is probably just a tiny bit bigger than the generator turbine so instead of spinning @ 160k rpm like the engine, it's probably spinning @ anywhere between 100-140K maybe more, still way to fast for a prop so it's reduced 30-1...
So essentially, the 30-1 is direct gear drive reduction but just to mess with you? the way you get that gearbox to start spinning in the first place is very similar to a torque converter except instead of fluids it uses hot gases(which also happens to be a fluid lol)
Technically, you could probably hold on to the propeller during start up and prevent it from ever spinning...(i'm just spit balling here, 30-1 sounds like lots of torque and 30+ years ago i got my fingers constantly mangled by a puny .49 Cubic inch nitro motor so please don't try it lol)
Enjoy your headache :/
I'd love to build an electric bike or reverse trike and add a small gas turbine/electric generator pack on it for shits & giggle... probably a slightly bigger turbine running @ 100K rpm coupled with a similar 30-1 reduction to spin the generator @ around 3000rpms (or whatever rpm it requires)
Based as much as possible on Chysler's turbine car from the 60s...
Capable of running on anything from jet fuel to Chanel #5, a bottle of Vodka,ethanol,diesel,gasoline & even used dirty cooking oil (filtered&treated i'm sure).
Using some form of heat exchanger to extract as much heat from the exhausts in order
to pre-heat air before it gets into the engine to improve fuel efficiency as well as reducing noise by a LOT & lowering the exhaust temperatures for safety...
My question is; how helpful could heating the air (and probably the fuel when it's diesel/cooking oil etc) before going in the engine be? considering it's just a single stage compressor/low cost inefficient RC engine...
A little? a lot? not at all? nobody knows ?
Would it be worth the effort/added parts?
Please Bro. make next video 10 minute run high rpm. How much Fuel will it take?
😎👍
Thin out the backing plates on a lathe to get more inner tube protrusion ..
Great idea but still not enough. main shaft could stand to be 15-20mm longer
I guess there is someone out there that could reproduce a piece with longer snout section , depending on how it is made in first place, but cost can get out of hand..
Yea exactly
Wonder how long it’ll be before someone makes a variable pitch prop for a turbo prop
This would be an awesome motor for a surveillance drone (military/police)
Could get a lot of sensory equipment airborne with this much power
Thanks for the upload sir !
Yea that would be very slick! once it's up the engine uses so little fuel if it's at idle. Add some extreme pitch at idle and fly for a while!
@@thelightersideofrc have you ever wondered wether the exhaust gas of a turboprop is hot enough to maybe add an afterburner just for fun?
If the exhaust pipes were directed properly it should be possible to get prop thrust and optionally afterburner thrust
Please tell me if my idea is way off
It cools off a lot in that short distance. Biggest worry with adding something like that is burning the plane to the ground 🤣🤣
@@thelightersideofrc oups nevermind....
Maybe for a boat it would be more suitable😂
🤣🤣
I just bought a Legend hobbies Fedex grand caravan c-208, a 15 pound model,85 inch wingspan. Would this engine appropriately fit for this aircraft, as far as performance/ thrust,weight??. It calls out for 35 to 40 cc gas. It would be neat to see a turbine on this.....
This is one of the smallest turbo prop setups so should be reasonable.
So you go to a 21" prop at 12 pitch or decrease your pitch to a 10" at 22" dia will increase your rpm it will increase your throttle response .
Usually, run at 6000-6500 rpm on a similar gas engine, should have lots of up line trust.
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Wonder if it'll profit from a larger prop or a 4-blade. Static RPM seems a bit high. Usually it unloads quite a bit in flight. On the other hand the PC-6 is a slow plane...
Yea another thought I had after the video is will the engine perform different when it’s strapped to the plane which is more aerodynamic than a big test stand with lots of different surfaces and shapes behind the prop.
160,000rpm turbine speed?? wow
That's fast but some of the smaller turbines I have come across before have a max rpm in the 200,000!😳
Yep. The smaller they get, the faster the speed. Not much different from a glow engine.
The ambient pressure is decreased due to the elevation. As a result, so will the thrust be decreased. Rough estimate is that the thrust at sea level might be around 30.13 lbf at the same ambient temperature. At 59 F, to try and move towards ISO conditions, might be lesser than the above stated number. Thrust without reference conditions is meaningless.
Thanks Paul! Old video and the new test videos have changed.
I had another problem with lubricant tube, How did you fit it perfectly? Mind stuck to upper cowling. Appreciated.
Re bend it or switch to teflon line.
@@thelightersideofrc I decided to use Teflon line . Thank you very much
Hey Bud, Love the channel and content. I have the K60 TP and go through the exact start up procedures but my GSU give me a mix message. It reads "Running" like normal but then it switches to "CHECK TPR", and continues to switch between these two messages. Because of this error message it stays at idle and will not read my throttle input. I have reached out to KT but no reply and there is nothing about this error code in the manual. Any ideas? Any help would be appreciated.
Thanks for watching! What radio system are you using?
@@thelightersideofrc Thanks for the reply, I am on Jeti but guess what, I figured out the issue. Turns out the RPM sensor had a bad solder job from factory. One of the wires wasn't making a connection so I resoldered it and Violà!! Everything is finally working perfect. I am now just waiting on a 24x22 Beila 3 blade Prop and Spinner so I can maiden her. This is on a HANGER 9 Japanese Oscar, it will turn some heads at local warbird events. Have a Happy & Safe New Year my friend. Cheers.
coming from years of experience in 100cc plus gas engines, that prop hub arrangement seems just dangerous in so many ways, and the "fix" does little to make it better. A prop that large (at least on gas engines) require a multi bolt arrangement, with the center spline coming a good bit the depth of the prop. Granted a turboprop is not generating the kind of torque or stress that a gas engine does, but that size prop needs some considerable safety margin when it comes to securing it. Just my thoughts. Even a couple of shear pins in the hub going into the back of the prop a 1/4" would be the minimum I would do.
Yea I hear you. Every turbo prop is similar to this. Single bolt. We basically have to work with what we have.
@@thelightersideofrc ya gas engines need the extra bolts because if its inherant vibrations , where as a turbo prop is like an electric motor,
The power delivery of a turboprop is VERY smooth compared to a piston engine.
The power pulses and vibration of a piston engine, and the possibility of a kickback, is what makes the prop hub have to be so substantial when compared to a turboprop. I wouldn't be afraid of the single bolt hub on a turbo..
Awesome 😊, I know you purchased it. But casually, do you know how to build a basic turboprop engine? Or perhaps, some manual or planning who can help me to build it? It's for a college project.
Building one from scratch no. I wouldn’t even suggest trying it. I say that as I’m still not 100% sold on any of the turbo props out there! Haven’t seen any myself that go the 25 h distance and go back for bearing service. I know there must be some but not many!
@@thelightersideofrc By go the distance to bearing replacement, you mean they fail in some other manner first?
Has somebody converted this (or similar engines) to a turboshaft application for RC helicopters (JetRanger, MD500)?
Hey Charles. Most of the turbo prop setups are also available in a Heli style setup. Pretty neat stuff!
Does anybody know where you can purchase the exhaust extension tips for a turboprop like this
HIEP Custom Pipe. Is where these were made
@@thelightersideofrc thanks
Great video I have the same problem on my K100tp as the prop shaft is too short to support the prop properly. Do you know where I can get a prop adapter like yours? Thank you
I think it's a poor oversight on Kingtech's part and they claim its normal and proper. the one in the video was machined from a local fellow. The owner organized it so i'm not sure the details.
I feel vindicated...Hahaha !!! 😄😄😄 Glad I'm not not the only one that says " Tur bine" instead of " Terban"...Also since you "Beta testing " this engine, I was thinking that you Email them and tell them they need to upgrade/redesign that prop hub assy...Not ev'ry body has a CNC or lathe to turn a prop holder extension....Cheers !!!!
HAHA! Turban, Turban, Turban. Makes me laugh every time I hear it. They have been made aware. Not sure if anything will change but we will see.
@@thelightersideofrc Okeedokee, And take care...😊😊😊👍👍👍👍
Hi
Did you purchase the exhaust tips, or did you make them yourself?
Hello Tord. They were made by Hiep Custom pipe. He used to do Tams pipes. hiepcustompipe@yahoo.com
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Can the engine shaft be connected to a gearbox and to the shaft of a go kart and still power it???
It's not a direct mechanical connection so in that case it wouldn't work.
@@thelightersideofrcThanks for reading my comment, what if we connect the turboprop's shaft to a cvt gearbox and run it???
I am looking forward to try it if the power of this engine is not enough then maybe I will have to Buy a PBS TS150.
Not enough power. If you were to start a TP and hold the prop. It would never turn.
@@thelightersideofrc TP?? What is it??
How much HP you think will be good for this??
What size prop is that you used.
Sorry this was a while ago. Not sure.
I have the G2 version of this engine. I could use one of those prop spacers. Do you know where I could purchase one?
Hello Terrence. The owner got a local machinist to make it up for him. I assume it's a pretty simple piece to make up.
Thanks for the response do you happen to have his contact info and ask if his machinist would be able to make up another one for purchase. Unfortunately I don’t have a machinist on speed dial.
No header tank ?
On a test stand, no. On an install, YES.
What have you heard as far as using 2 stroke oil mix for lubrication in turboprop as it shows in some manuals?
Basically stick to manufactures recommendations. Kingtech has an oil chart now in the manual which shows all the common oils and the associated data.
Where can l find the exhaust tip ?
Probably need to contact a pipe manufacture. HEIP CUSTOM PIPE on Facebook is who I typically use.
@@thelightersideofrc Thank you very much. And one thing, How can I find propeller extended adapter?
The power/weight ratio of those things is ridiculous.
Oh Yea! Absolutely!
@@thelightersideofrc I want to create a combined cycle genset, that starts with a turbine engine then feeds a sterling engine with the waste heat. But i think i've calculated the TE of this turbine at about 4%, lol.
what happened with your hand ?
Nothing exciting like a shark attack or axe incident. Just born that way.😊
oooooo ❤️❤️
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@@thelightersideofrc I’d make up some really cool stories to freak people out
Haha 😂
I would be less disappointed in the thrust than in the run time for 32 oz. of fuel. Five minutes (give or take) is not a lot.
For the amount of push it's pretty reasonable consumption. If you were to use a turbine that's giving a 28lb output thrust 32oz of fuel might last 2 to 2.5 min.
Bro.what.in.the.price.
Look on Kingtech website for current pricing.
I don’t know how I got here
🤣🤣 great place to be!
До чего же противен голос у ведущего,наверно долго подбирали такого...
WOW! Thank you so much! your kind ♡ and positive comment is so appreciated! Have a Blessed day!