I cannot believe how much practical knowledge I have been able to gather over the last few days watching your videos. Thank you for all you do, please don't stop.
Very impressive!!! If I may make a suggestion, 2 stroke engines performance and efficiency is very dependent on their exhaust design. Much work is involved to create the proper wave propagation and scavenging. Running both exhaust into one chamber may be problematic for achieving the best Kadenacy effect. Running at one optimum rpm will make it easier to design though. These suggestions may have been brought up and are in the spirit of helping. All the best to you and your team. Semi retired R&D Lab director in Arizona sending some heat your way. Keep warm and keep up the good work!!!!
true all of the two cycle tiny to large hobby engines have to this correct or they will lack in all attributes and then get too hot and then you need a new one in a very short time.
Mark V Whole different arena: You appear to know something about tuning exhausts....could you tune the cylinder length, baffles, etc to make a more effective silencer for a .22 pistol? This fellow also demonstrated active noise cancellation and the noise reducing properties of helium. Could we build some destructive interference, perhaps for a particular brand of cartridge, i.e. for a particular frequency profile? I would point out that escaping gases PRECEDE the projectile exiting the muzzle. Use those to trip some noise-cancellation? Or to drive a piston which tunes the silencer chamber? Or which creates a vacuum within the silencer chamber? Any thoughts?
Powered paraglider (paramotor) engines have excellent power/weight ratio. Beautifully engineered with tuned exhaust and happy to pull 6000rpm for hours.
Yeah I'm excited ! Can't wait to see the larger generator in action ! Go for it ! Btw, congratulations with your channel and the high level of videos. Excellent documented !
I just found your video's, the way you explain things is crystal clear, I understand everything, you convey everything perfectly, please keep making technical videos, already subscribed.
Not sure why I am watching all these videos. Lol it's 4am and I have work in a few hours, yet I'm still staying up and watching all your videos, even though I don't understand 97% of the Terminology or the Physics in most of these videos. I guess I'm just fascinated by your knowledge and the technology as well as how you demonstrate/explain what is happening. The videos make me feel ashamed of not pursuing my old dream of becoming a Mechanical Engineer. I never followed that dream and now I'm in a much lower position in my life currently. I'm only 23 years old, maybe it's not too late. I subscribed, and even though I don't understand alot of this, I do appreciate the amout of effort you put into these videos and how well you explain what is happening. I look forward to the future drone videos and the DIY speaker videos, as well as gaining knowledge from your other future videos.
Thanks for all of these super informative videos. I found them recently as I'm starting on a similar project. All of the information and thoughtful explanations you provide are immensely helpful. I did notice the last upload to the playlist was over 9 months ago though. I hope the drone/drone APU series continues!
@@TechIngredients Hey, are you going to get back to the heavy multi rotor stuff at some point? I loved the stuff you were doing in that space and would love to see where the generator and heavy lift multi rotor are going.
@@TechIngredients Hello, I am very interested in the new update on the APU. I am starting a maned drone project and this is the route I am considering. This type of APU will make it more useful with longer flight times thus, a hybrid!. When do you anticipate a new update or pod cast showing us what you have found out? Thanks for your time!!!!!
I'm surprised you didn't melt the insulation on the wires going to the resistors. That looks to be about 12 AWG. Trillions of angry pixies slamming into a brick wall. Love the videos! Cheers!
Back when we had land lines, the joke was "dial 9 1 and wait". I still say it, but my kids don't think it's funny. "Why wouldn't you dial 911 and wait to hit send?" Because the iambic pentameter is all wrong!
As a load, you might consider a salt water rheostat. For something like this, it would be something like a 5 gallon bucket with salt water and two electrodes. You move them to vary the resistance. The nice thing is you have a very cheap load, and it's variable based on where you put your electrodes (and of course do this outside to vent the electrolysis gasses). Great video!
We're actually working on both a smaller and a larger generator. The load resistors for 13kW is a big issue. The solution is literally a wall sized spread of 100M of Kanthal wire.
I would suggest keeping the resistors in a mineral oil bath with a circulation pump to a radiator. This would do the most towoards keeping your dummy load cool rather than risking burning it up using just a spray bottle.
I would make a fan cooled load box. Take a bunch of air heating elements (hot air gun or hair dryers) and put enough in series / parallel to handle your max power at your max current. This will make less noise than the engine and you could place a set of switching relays that will vary the load and let you accurately characterise your peak power, torque curves and fuel consumption at various throttle settings.
Water is going to work very well. It has all the heat capacity you need and will boil if overloaded which will sink a HUGE amount of power. It's safe and cleanup is nil. This assumes your load resistors can tolerate it, which I imagine they will.
You can just put stainless foil or wire in a water bath. There will be electrolysis, but it will work for a long time. Resistor wire is fine, too if you have it.
Reminds me of an anecdote from a WWII cartoonist who drove around Italy in a jeep getting stories and ideas. At maximum cruising speed the jeep sounded to him exactly like a state of the art German fighter plane at maximum speed on a strafing run. And, he said he sometimes had to pull over to settle his nerves again. High frequency noise being more easily to cancel by lightweight sound insulation, I have to wonder if a turbine would be more efficient. Of course cost is always a concern.
A safety aspect when considering manned drones: 1 you can have enough battery power stored for a safe emergency landing in the event of an engine failure, and 2 a ballistic recovery chute at least has a chance which is next to impossible with a traditional helicopter. And as better sources of power become available in the future, the modular nature of this design makes it easier to swap out the old engine.
I would bet you if you made the engine in your hand using a scotch yoke crankshaft you would be able to increase efficiency about forty to fifty percent. I made an engine years ago using that type of crank and what the performance and gas savings were just superb. Just send some helpful information to you Sir. Good luck too.
Very excited to see what happens with this projects, drones have interested me for a while but their run time seems a little boring. Can't wait for more progress, keep up the good work.
Aidan Marshall there are flight-time optimised fpv drones that can stay up an hour or more while flying around and carrying camera gear. Typically electrically driven propellers are limited in flight duration by their battery capacity to power consumption ratio being quite low. This applies to full scale and hobby type e-powered aircraft. For hobby scale or micro scale drones, or man carrying aircraft the limitation that prevents longer flightimes is often cost and cost of development.
Very cool, with your obvious tenacity and skill you might be able to come up with a small manufacturer/shop friendly approach for making a fuel cell flight worthy. They are far more reliable than small engines.
Excellent! Concerning the load resistors, in my youth helping a friend with his ham radio challenges to tune a transmitter to optimal power without going through the airways we used a dummy load. This consisted of high power resistors as you used with a then standard 50 ohm resistance (matches the impedence of the transmitter output). The resistors were placed in a paint bucket full of mineral oil if I remember right. The oil absorbed the heat from the resistors and distributed the heat through out the bucket. The surface of the resistor though ceramic would cook or be damaged because the surface area of the resistor only had the surrounding air to bleed off the heat. From perhaps fully loaded having heat oxidize or burn up the element of the resistors the great heat would spread so that the whole bucket heated but could easily be touched even with a thousand watts being turned mostly to heat. Little RF energy was transmitted and you could tune up the transmitter to generate optimal power output.
The ultimate apu engine for smoothness and weight, would be a shafted gas turbine. Jetcat makes a small one, but the low compression ratio of these engines gives a very high specific fuel consumption. Perhaps the small Wankle engines would make a good smooth engine. Not much reciprocating mass going on in those. The sound abatement system seems to be the biggest challenge. Big gasoline and diesel engines in vehicles are quited substantially by relatively small mufflers, yet it seems nothing has been invented to effectively pipe down the noisy 2 stroke. That Chinese APU sounds crude compared to the direction your going.
Yeah, I was thinking a small wankel engine would be the best, however that would either require finding one (good luck) or designing and building one (now that would be a project I would gladly watch). There were some small ones for rotary engine bikes, however there are only a few known as far as I know.
I have to say, that little flat four he teased us with at the end is about the best solution for the power outputs he wants. The flat four configuration basically negates the need to balance the flywheel as a feature of its geometry. As an added bonus, if it's a four stroke he still gets the continuous torque output to the drive shaft.
To best distribute the load between resistors with such currents, it is ideal to place the two feed wires as far away from each other as possible, rather than both being directly connected to the same resistor; Even though the resistors are wired in parallel, with such a current draw, voltage drop is big. The first resistor handles the most current. They are indeed in parallel, but with large currents, wire resistance impedes current flow to the furthest resistors when wired in this way. At 2:27 in the video, the red wire should stay where it is, and black should go to the bottom rightmost resistor terminal. The circuit will remain almost identical, with the only change being wire resistance in parallel paths
That's very interesting and I like where the possibilities for this is headed. I have a OS MAX FP 60 which was given to me and I'd like to make a small generator with it but I still need to get a glow plug igniter and a decent motor that can be used as generator then I'll look into what I can power with it.
Great performance ! So the peak power was more than 2KW, so even the existing setup which is having low sound level, very very low vibration level can be be used at 1800W which is at par with that of Nova 2000 ! Its quite long wait now, I am almost diying to see your next update video !
You and this channel are far and away my favorite thing online. I always have an appetite to learn new things, and you have a special way of delivering material verbally and using examples so that learning and understanding becomes much more complete. Complementary to that, is the ability to retain the information especially when you use examples. Had to show a friend some stuff, he asked where I learned it, I was able to take him to the correct video right away and after watching a portion of the video, you showed the example I was talking about and helped him understand what I couldn't. You're delivery, you content, your examples are on the upper echelon of teaching. Thank you for continuing to bring content. Thank you to your sons for being behind the cameras where there's not much glory or thanks. And if your married, thank you to your wife, who I am sure loves your genius mind and sometimes dislikes your genius mind, for being patient and allowing you to do what you are so gifted with, and that is teach others in a manner that most can't. You are much appreciated!!!
You can also place temperature sensors on engines and having microcontroller onboarded already (Arduino) you can regulate fan speed to improve their life time and reduce their noise.
I would like to know if twin rotary engines would be a good option due to their compact size, simplicity, and lack of linear motion to induce the kind of vibrations you would get with a single piston.
The most impressive feature is how silky smooth it runs. Anyone using their drone for video will appreciate that of course but it is also very important for air frame and component longevity in general.
I had already watched it several times--not hard to see it doing a convincing impersonation of a paint mixer. To be fair it is mounted to a fairly lightweight structure which likely does not help. That being said a single cylinder is always going to bounce. Imagine the first time that thing sprays a cloud of oily exhaust onto an expensive camera lens...
They could have tuned the isolation system better. The generator probably masses close to the rest of the drone. The ratio of cylinder mass vs the generator mass, multiplied by the distance traveled by the cylinder will determine the maximum excursion a completely free generator will move when it vibrates. Orienting the cylinder so that its movement is horizontal and hanging the generator from thin wires with safety limits would nearly eliminate any transmitted vibrations. I'll let them figure this out.
Is it for a project for a company or a personal project? if you don't mind me asking. These kinds of projects require quite large investments in terms of time and money. Also, does it change anything if you do testing with resistive loads but the engines for flight will be inductive loads? Does that require any change in the design or setup of the generator?
May I suggest you to put a link in the description for the 2-3 video related to the current video. Same for all the video in your chanel. It's a good practice that will help getting even more views. Also, your 'old' video are still very very nice. Nothing really get old, all very high quality in fact. Love from Montréal
Glad AvE led me to this channel. Great and interesting content with projects capturing my imagination! Like this tiny yet mighty generator PS. Were you a (university)teacher at any given point? A very pleasant way of describing function and theory behind it in a understandable way
If it's possible turn up your volume for your videos brother it is very hard for me to hear them probably goes for the rest of all of us 2 thanks for trying better keep up the good videos I'm learning a lot thank you brother
If watching in chrome you can use a hard limiter (audio compressor) extension. I use one called "Audio Channel". In limiter mode: threshold -24, attack 0.0, release 0.2 , ratio 4, knee 10. BIG volume increase with a little distortion.
You were mentioning your concerns around the efficiency of the 2-stroke motors in one of your earlier videos. Most 2-stroke engines are more efficient at higher RPM. Have you done any efficiency measurements for the generator system when it's operating higher in its rev range?
Thanks for the heads up. I'm very interested in the 21Hp engine version. I've been looking at the price of those DLE motors myself. This is about 5kg engine weight plus fuel plus your alternator if your alternator was a rectified 12090 BLDC motor set to generate then we would be at about 9kg plus fuel per set. Is using a BLDC motor as a generator as practical as a purpose built item. What are your thoughts. Is there a better item out there... Halbach arrays etc. The possibility of using the BLDC as a starter motor also presents itself.
To make life of your assistant easier next time, you could add a car windshield spray pump+nozzles to your setup 😄 edit: or use halogen construction lights as resistors, they are intended to glow :-)
Snow isn't as cohesive as liquid water. You don't have to force water into the cracks of the ceramics. With snow, you'd have to constantly push down to get effective cooling. Not something you'd want to do around that kind of energy output.
Pretty exciting aren't the words! This is amazing stuff. I just found your channel this weekend after watching the prop testing video with the generator test bed at the end. I put the word out to my friends! I cant wait to see the next update and cant wait to duplicate the generator build. When do you expect to do flight testing?
We need manpower! When we undertook to advance this channel beyond a video repository for a narrow audience of laser enthusiasts we agreed that our standards would not change. Producing PRACTICAL content, backed up with clear explanations requires research (no, I don't know everything!) and testing requires a lot of time. We have over 30 future videos outlined, 6 videos in the works and two in editing. The two of us also have day jobs, but we are doing our best... anyway, I'm not complaining because this is a blast. Thanks for your positive feedback and try to be patient, we'll do our best!
What benefits does a hybrid drone have over a gas helicopter? I don't get this project? Although I love the idea of a lightweight and quiet gas generator though.
Have you considered using a linear alternator free piston engine? They can be built from four two cycle motors operating 180deg out of phase and have low vibrations because of no reciprocating mass.
I cannot believe how much practical knowledge I have been able to gather over the last few days watching your videos. Thank you for all you do, please don't stop.
Thanks, we won't!
This series on the hybrid drone engine has been inspirational. I can't wait to see the next level in the design. Keep up the excellent work!!
Very impressive!!! If I may make a suggestion, 2 stroke engines performance and efficiency is very dependent on their exhaust design. Much work is involved to create the proper wave propagation and scavenging. Running both exhaust into one chamber may be problematic for achieving the best Kadenacy effect. Running at one optimum rpm will make it easier to design though. These suggestions may have been brought up and are in the spirit of helping. All the best to you and your team. Semi retired R&D Lab director in Arizona sending some heat your way. Keep warm and keep up the good work!!!!
get an off road motorcycle muffler.
true all of the two cycle tiny to large hobby engines have to this correct or they will lack in all attributes and then get too hot and then you need a new one in a very short time.
Mark V Whole different arena: You appear to know something about tuning exhausts....could you tune the cylinder length, baffles, etc to make a more effective silencer for a .22 pistol? This fellow also demonstrated active noise cancellation and the noise reducing properties of helium. Could we build some destructive interference, perhaps for a particular brand of cartridge, i.e. for a particular frequency profile? I would point out that escaping gases PRECEDE the projectile exiting the muzzle. Use those to trip some noise-cancellation? Or to drive a piston which tunes the silencer chamber? Or which creates a vacuum within the silencer chamber? Any thoughts?
Powered paraglider (paramotor) engines have excellent power/weight ratio. Beautifully engineered with tuned exhaust and happy to pull 6000rpm for hours.
You can buy off the shelf tuned mufflers for the SATO engines but they are quite loud. I get the feeling the design here is all about being quiet.
Yeah I'm excited ! Can't wait to see the larger generator in action ! Go for it ! Btw, congratulations with your channel and the high level of videos. Excellent documented !
Wow. 13kw. Can't wait to see that . Thanks for all the hard work you are doing. Very much appreciated by all of us.
I just found your video's, the way you explain things is crystal clear, I understand everything, you convey everything perfectly, please keep making technical videos, already subscribed.
This has to be one of the most interesting channels on CZcams! Thank you so much
Thanks for watching. There's a lot more coming!
Any Updates sir???
I’m guessing that the idea didn’t pan out and the whole thing was shelved.
Absolutely NOT boring thanks mate
Sure!
your sons have a super awesome dad :D thanks!!!
The channel moderator(Alex) refused to pin that comment. There goes his allowance.
Thats true mine died when i was 13 .i could sure steal one.
@@TechIngredients you really need to follow up on this project
Must be a little like being one of the Hardy Boys.
I agree.
you are a cool dad for your sons
i hope they utilize their time with you the best they can
Not sure why I am watching all these videos. Lol it's 4am and I have work in a few hours, yet I'm still staying up and watching all your videos, even though I don't understand 97% of the Terminology or the Physics in most of these videos. I guess I'm just fascinated by your knowledge and the technology as well as how you demonstrate/explain what is happening. The videos make me feel ashamed of not pursuing my old dream of becoming a Mechanical Engineer. I never followed that dream and now I'm in a much lower position in my life currently. I'm only 23 years old, maybe it's not too late. I subscribed, and even though I don't understand alot of this, I do appreciate the amout of effort you put into these videos and how well you explain what is happening. I look forward to the future drone videos and the DIY speaker videos, as well as gaining knowledge from your other future videos.
watch my videos then amigo
So many engineers and makers gathered in these videos. So cool 😄
Thanks for all of these super informative videos. I found them recently as I'm starting on a similar project. All of the information and thoughtful explanations you provide are immensely helpful. I did notice the last upload to the playlist was over 9 months ago though. I hope the drone/drone APU series continues!
As we speak, one of my sons is working on one of the smaller drones.
Hey thanks for the super quick response! That’s great to hear. Looking forward to new updates!
@@TechIngredients Hey, are you going to get back to the heavy multi rotor stuff at some point? I loved the stuff you were doing in that space and would love to see where the generator and heavy lift multi rotor are going.
@@TechIngredients Hello,
I am very interested in the new update on the APU. I am starting a maned drone project and this is the route I am considering. This type of APU will make it more useful with longer flight times thus, a hybrid!. When do you anticipate a new update or pod cast showing us what you have found out? Thanks for your time!!!!!
I'm surprised you didn't melt the insulation on the wires going to the resistors. That looks to be about 12 AWG. Trillions of angry pixies slamming into a brick wall. Love the videos! Cheers!
14 G. He hate them. But, it's all just resistance dumping and steam generation anyway.
Every time he goes to start the generator, I instinctively yell "ENGAGE SAFETY SQUINTS! MOM ON SPEED DIAL!"
'Mom on speed dial' that's one I've been using since AvE as well. Dave is responsible for me using 'Bob's your uncle'
Osmosis its "Bob's your auntie"
Back when we had land lines, the joke was "dial 9 1 and wait". I still say it, but my kids don't think it's funny. "Why wouldn't you dial 911 and wait to hit send?" Because the iambic pentameter is all wrong!
That's one heck of a way to convince people to subscribe! Looking forward to it!
As a load, you might consider a salt water rheostat. For something like this, it would be something like a 5 gallon bucket with salt water and two electrodes. You move them to vary the resistance. The nice thing is you have a very cheap load, and it's variable based on where you put your electrodes (and of course do this outside to vent the electrolysis gasses). Great video!
Quality Channel, please keep up the great work.
I’ve been following your prototype builds. I think you’re doing a very good job. Keep up the good work. Looking forward to your next video 👍
same here
We're actually working on both a smaller and a larger generator. The load resistors for 13kW is a big issue. The solution is literally a wall sized spread of 100M of Kanthal wire.
Sounds like it is good that you are working on this while it is still winter!
How about automotive light bulbs? Having enough space theoretically the absorbing power could be sized up without a limit.
True, but do you know how many 55 watt bulbs are needed for 13 kW?
Man! That shows some promise! Great work!
I so enjoy your videos and work.... Thank you
I love you brother! You always have a video for one of my projects.
I would suggest keeping the resistors in a mineral oil bath with a circulation pump to a radiator. This would do the most towoards keeping your dummy load cool rather than risking burning it up using just a spray bottle.
Good idea, easy , inexpensive and elegant. I suspect you have some experience with high voltage.
Tech Ingredients water would do the job too.
I would make a fan cooled load box. Take a bunch of air heating elements (hot air gun or hair dryers) and put enough in series / parallel to handle your max power at your max current. This will make less noise than the engine and you could place a set of switching relays that will vary the load and let you accurately characterise your peak power, torque curves and fuel consumption at various throttle settings.
Water is going to work very well. It has all the heat capacity you need and will boil if overloaded which will sink a HUGE amount of power. It's safe and cleanup is nil. This assumes your load resistors can tolerate it, which I imagine they will.
You can just put stainless foil or wire in a water bath. There will be electrolysis, but it will work for a long time. Resistor wire is fine, too if you have it.
Love it! This is such a cool project.
This is terrific stuff! VERY exciting.
The moment you pull out that four cylinder engine was a very Tim the Tool Man Taylor Moment: “And now folks, here’s the Binford 5000 Mega Watt!”
Reminds me of an anecdote from a WWII cartoonist who drove around Italy in a jeep getting stories and ideas. At maximum cruising speed the jeep sounded to him exactly like a state of the art German fighter plane at maximum speed on a strafing run. And, he said he sometimes had to pull over to settle his nerves again.
High frequency noise being more easily to cancel by lightweight sound insulation, I have to wonder if a turbine would be more efficient. Of course cost is always a concern.
Just fantastic and enjoying your videos a lot. Hope you will continue with the great work you are doing for the hobby. k
Thanks and we will. There is a lot more coming.
Excited for an update!!!!
Cant wait to see the next video in this series!
A safety aspect when considering manned drones: 1 you can have enough battery power stored for a safe emergency landing in the event of an engine failure, and 2 a ballistic recovery chute at least has a chance which is next to impossible with a traditional helicopter. And as better sources of power become available in the future, the modular nature of this design makes it easier to swap out the old engine.
I would bet you if you made the engine in your hand using a scotch yoke crankshaft you would be able to increase efficiency about forty to fifty percent. I made an engine years ago using that type of crank and what the performance and gas savings were just superb. Just send some helpful information to you Sir. Good luck too.
All I can say is thank you, incredible video.
You're welcome!
Really neat stuff
Great video!
Awesome, super light, micro size electric generator! I want a hybrid bicycle with that!!
We, are very much liking the electro LOGO for the intro!!!
Very exciting! Definitely the future.
much loved your work is amazing and your videos intuitive
Wow! It looks like your project is really taking off
An expansion chamber for the exhaust should help up the efficiency and quiet things down ATST
Well done!
Cool stuff just what I've been lookin for
THIS MAN IS AWESOME!!! I AM YOUR BIGGEST FAN AS OF TODAY!!! WOW!! BEST WISHES!!!
Very excited to see what happens with this projects, drones have interested me for a while but their run time seems a little boring.
Can't wait for more progress, keep up the good work.
Aidan Marshall there are flight-time optimised fpv drones that can stay up an hour or more while flying around and carrying camera gear. Typically electrically driven propellers are limited in flight duration by their battery capacity to power consumption ratio being quite low. This applies to full scale and hobby type e-powered aircraft. For hobby scale or micro scale drones, or man carrying aircraft the limitation that prevents longer flightimes is often cost and cost of development.
Very cool, with your obvious tenacity and skill you might be able to come up with a small manufacturer/shop friendly approach for making a fuel cell flight worthy. They are far more reliable than small engines.
Excellent! Concerning the load resistors, in my youth helping a friend with his ham radio challenges to tune a transmitter to optimal power without going through the airways we used a dummy load. This consisted of high power resistors as you used with a then standard 50 ohm resistance (matches the impedence of the transmitter output). The resistors were placed in a paint bucket full of mineral oil if I remember right. The oil absorbed the heat from the resistors and distributed the heat through out the bucket.
The surface of the resistor though ceramic would cook or be damaged because the surface area of the resistor only had the surrounding air to bleed off the heat. From perhaps fully loaded having heat oxidize or burn up the element of the resistors the great heat would spread so that the whole bucket heated but could easily be touched even with a thousand watts being turned mostly to heat.
Little RF energy was transmitted and you could tune up the transmitter to generate optimal power output.
That is how my son tunes our radio frequency circuits.
@@TechIngredients Just a idea, how about an rc jet engine with generator at the front
The ultimate apu engine for smoothness and weight, would be a shafted gas turbine. Jetcat makes a small one, but the low compression ratio of these engines gives a very high specific fuel consumption. Perhaps the small Wankle engines would make a good smooth engine. Not much reciprocating mass going on in those.
The sound abatement system seems to be the biggest challenge. Big gasoline and diesel engines in vehicles are quited substantially by relatively small mufflers, yet it seems nothing has been invented to effectively pipe down the noisy 2 stroke.
That Chinese APU sounds crude compared to the direction your going.
Yeah, I was thinking a small wankel engine would be the best, however that would either require finding one (good luck) or designing and building one (now that would be a project I would gladly watch).
There were some small ones for rotary engine bikes, however there are only a few known as far as I know.
O.S., are they still around? They made model glowplug wankels when I was a lil kid, 25-ish years ago!
I have to say, that little flat four he teased us with at the end is about the best solution for the power outputs he wants. The flat four configuration basically negates the need to balance the flywheel as a feature of its geometry. As an added bonus, if it's a four stroke he still gets the continuous torque output to the drive shaft.
I keep thinking to myself I could accomplish this with a steam turbine as well.
Not very efficient ... very high fuel consumption in a Wankel ...
To best distribute the load between resistors with such currents, it is ideal to place the two feed wires as far away from each other as possible, rather than both being directly connected to the same resistor; Even though the resistors are wired in parallel, with such a current draw, voltage drop is big. The first resistor handles the most current. They are indeed in parallel, but with large currents, wire resistance impedes current flow to the furthest resistors when wired in this way. At 2:27 in the video, the red wire should stay where it is, and black should go to the bottom rightmost resistor terminal. The circuit will remain almost identical, with the only change being wire resistance in parallel paths
Can’t wait keep up the engineering
This is great content!
This channel is so cool! Just subbed
Thank you and welcome!
That's very interesting and I like where the possibilities for this is headed.
I have a OS MAX FP 60 which was given to me and I'd like to make a small generator with it but I still need to get a glow plug igniter and a decent motor that can be used as generator then I'll look into what I can power with it.
Thank you for the Videos! Would it be possible for you to post the parts list and their respective manufacturers?
Just checking back. Did you ever move forward with the 13kW design? I havent found the video for that.
I was thinking the same thing...
I'm looking for it too.
Yea? Seems to have ditched this project or put it on the back burner. Too bad
That's because he found out out he was crazy thinking he could ever make 13k from that engine. I laughed when he said that.
Well, too bad this one didnt seem to move forward.
Subscribed :^) Looking forward to the drone.
Thanks!
Great performance ! So the peak power was more than 2KW, so even the existing setup which is having low sound level, very very low vibration level can be be used at 1800W which is at par with that of Nova 2000 !
Its quite long wait now, I am almost diying to see your next update video !
I love how everything seems so very precise and thoughtfully laid out.
Then the cooling solution is 'guy with squirt bottle'
But hey whatever works :)
In Japanese art, it is called the peacock effect.
Awesome stuff man.
Thanks!
Very good work.
You and this channel are far and away my favorite thing online. I always have an appetite to learn new things, and you have a special way of delivering material verbally and using examples so that learning and understanding becomes much more complete. Complementary to that, is the ability to retain the information especially when you use examples. Had to show a friend some stuff, he asked where I learned it, I was able to take him to the correct video right away and after watching a portion of the video, you showed the example I was talking about and helped him understand what I couldn't. You're delivery, you content, your examples are on the upper echelon of teaching. Thank you for continuing to bring content. Thank you to your sons for being behind the cameras where there's not much glory or thanks. And if your married, thank you to your wife, who I am sure loves your genius mind and sometimes dislikes your genius mind, for being patient and allowing you to do what you are so gifted with, and that is teach others in a manner that most can't. You are much appreciated!!!
Wow, that's generous... thanks!
would be great to see this project continue
Would sure love to see this one continue.
You will.
@@TechIngredients You're Killin me man! I just got a DLE 222 for my large scale airplane project and want to see what you did with yours!
Damn I can't wait to see that!
Very exciting project
You can also place temperature sensors on engines and having microcontroller onboarded already (Arduino) you can regulate fan speed to improve their life time and reduce their noise.
Did you ever fit this to your heavy lift rig? How did it go? Could you do a follow up video please?
great work ,what's the target weight vs output you might acheve
I would like to know if twin rotary engines would be a good option due to their compact size, simplicity, and lack of linear motion to induce the kind of vibrations you would get with a single piston.
The most impressive feature is how silky smooth it runs. Anyone using their drone for video will appreciate that of course but it is also very important for air frame and component longevity in general.
Take a look at the Nova 2000 video from Foxtech. Take note around 0:45 seconds into the video.
czcams.com/video/XxYvr0o6-v0/video.html
I had already watched it several times--not hard to see it doing a convincing impersonation of a paint mixer. To be fair it is mounted to a fairly lightweight structure which likely does not help. That being said a single cylinder is always going to bounce. Imagine the first time that thing sprays a cloud of oily exhaust onto an expensive camera lens...
They could have tuned the isolation system better. The generator probably masses close to the rest of the drone.
The ratio of cylinder mass vs the generator mass, multiplied by the distance traveled by the cylinder will determine the maximum excursion a completely free generator will move when it vibrates. Orienting the cylinder so that its movement is horizontal and hanging the generator from thin wires with safety limits would nearly eliminate any transmitted vibrations. I'll let them figure this out.
I agree. Dampening vs. Decoupling. I wonder how a rotary engine would do in this application?
I'm so impressed! Please post the next vid :-D
would really love some follow up videos on your work creating a hybrid heavy lift drone
Is it for a project for a company or a personal project? if you don't mind me asking. These kinds of projects require quite large investments in terms of time and money.
Also, does it change anything if you do testing with resistive loads but the engines for flight will be inductive loads? Does that require any change in the design or setup of the generator?
Hay, my projects smoke like that all the time. But, strangely, yours lacked the combustion I seem to achieve effortlessly.
VERY NEAT, many Thanks for sharing
Impressive!
May I suggest you to put a link in the description for the 2-3 video related to the current video. Same for all the video in your chanel. It's a good practice that will help getting even more views.
Also, your 'old' video are still very very nice. Nothing really get old, all very high quality in fact.
Love from Montréal
It's hard to find the related previous video hidden somewhere within your chanel.
You may wanna get a zenoah 2 stroke motor they make 80CC to cylinders. Zenoah is very reliable.
Glad AvE led me to this channel.
Great and interesting content with projects capturing my imagination! Like this tiny yet mighty generator
PS. Were you a (university)teacher at any given point?
A very pleasant way of describing function and theory behind it in a understandable way
I love this!
If it's possible turn up your volume for your videos brother it is very hard for me to hear them probably goes for the rest of all of us 2 thanks for trying better keep up the good videos I'm learning a lot thank you brother
If watching in chrome you can use a hard limiter (audio compressor) extension. I use one called "Audio Channel". In limiter mode: threshold -24, attack 0.0, release 0.2 , ratio 4, knee 10. BIG volume increase with a little distortion.
You were mentioning your concerns around the efficiency of the 2-stroke motors in one of your earlier videos. Most 2-stroke engines are more efficient at higher RPM. Have you done any efficiency measurements for the generator system when it's operating higher in its rev range?
I really wish you would finish this project. It is one of the most interesting to me.
keep going!dont give up or listen to the 'talkers' keep building
Thanks for the heads up. I'm very interested in the 21Hp engine version. I've been looking at the price of those DLE motors myself. This is about 5kg engine weight plus fuel plus your alternator if your alternator was a rectified 12090 BLDC motor set to generate then we would be at about 9kg plus fuel per set. Is using a BLDC motor as a generator as practical as a purpose built item. What are your thoughts. Is there a better item out there... Halbach arrays etc. The possibility of using the BLDC as a starter motor also presents itself.
i loved , i want to see more
Have you considered running some large RC fans from the motor to act as the load?
Ok so change fuel mix to hho and adjust timing,vibration should drop down and efficiency improve
To make life of your assistant easier next time, you could add a car windshield spray pump+nozzles to your setup 😄
edit: or use halogen construction lights as resistors, they are intended to glow :-)
Or use a water boiler or submerge them in oil or water to dissipate the heat.
he had a pile of snow few feet away, why did he bother with spray?
Snow isn't as cohesive as liquid water. You don't have to force water into the cracks of the ceramics. With snow, you'd have to constantly push down to get effective cooling. Not something you'd want to do around that kind of energy output.
Pretty exciting aren't the words! This is amazing stuff. I just found your channel this weekend after watching the prop testing video with the generator test bed at the end. I put the word out to my friends! I cant wait to see the next update and cant wait to duplicate the generator build. When do you expect to do flight testing?
We need manpower! When we undertook to advance this channel beyond a video repository for a narrow audience of laser enthusiasts we agreed that our standards would not change. Producing PRACTICAL content, backed up with clear explanations requires research (no, I don't know everything!) and testing requires a lot of time. We have over 30 future videos outlined, 6 videos in the works and two in editing. The two of us also have day jobs, but we are doing our best... anyway, I'm not complaining because this is a blast. Thanks for your positive feedback and try to be patient, we'll do our best!
wow.. that is amazing
What about opposed piston engine to control vibration? Its what they have in several cars. Something like Achates Power? Seems logical
Very exciting to watch mate, yes I'll be looking very forward to seeing the 20 hp models. Are they two or four stroke engines?
Four cylinder, two stroke engines.
Were there more videos about the hybrid drone after this?? I looked but did not see any more.
So, will there be a next video on such kind of generators ?
Quite interesting stuff, but no updates for quite a long time on this
Nice little vw engine
What benefits does a hybrid drone have over a gas helicopter? I don't get this project? Although I love the idea of a lightweight and quiet gas generator though.
Have you considered using a linear alternator free piston engine? They can be built from four two cycle motors operating 180deg out of phase and have low vibrations because of no reciprocating mass.
You can chamber those two stroke too, for your power band.
add a Yamaha Power Valve System and rock and roll after 5000rpm!!
congratulations very nice hard work will the ignition system cause RFI to the contollers?
very nice