OTV 6

[@andyjones7121]

Super genius builds flying machine from scratch. Also wears a 6 year old's pajamas with airplanes and cars on them on his KZbin video. I absolutely love it!

[@JohnJones-oy3md]

If the Wright brother's had a KZbin channel in their time, I'd like to think it would have been something like this. Thank you for sharing your dreams with us.

[@chattonlad9382]

You are possibly the most interesting chap on KZbin. Love what you do.

[@rogerdueck9725]

Love this build and your channel! I really enjoyed the inflatable car build as well. I've been a CNC machinist for 7 years so the tools are not new to me but it's fun seeing someone discover and enjoy the things I use on a daily bases. Keep making these videos because they are inspiring to all of us watching!

[@nochan99]

When testing gearbox/bearings, monitor the temperature, if you have access to IR camera that will be super useful! If temp goes up you know something is bad. Temp could be the reason why grease came out. If you have problems with high temperature, you can get bearings without seals/grease that just sit in the oil of the gearbox. Oil tolerates much higher temp than grease (grease is just soap that retains lubricant oil, and the soap will go bad in high temp). Also after initial run-in you might want to change the oil to get rid of any metal wear particles.

[@onjofilms]

It's not often I'm totally glued to a 22 minute video. But everything in this was very intriguing and interesting. Thanks for sharing.

[@malakiblunt]

when you scale up 3d projects you have to cube the materials and time , as a sculptor i have learnt this lesson many times, and yet it still seams counter intuitive - It cant be THAT much more !!

[@amazingdiyprojects]

Yeah, 27 x time for a scale factor of 3 actually seems a reasonable estimate!

[@rotormasher]

Wow this is amazing, I really appreciate the effort and the engineering you put into this! Can't wait for the prototype to fly :)

[@ProjectPhysX]

Really cool project! I appreciate these videos, there is so much to be learned. The indirect calipers were new to me too.

[@Lord_Verminaard]

This is quite interesting! Can't wait to see more. On the seal blowout issue, many automotive gearboxes and differentials have a breather valve on top of the case, adding one might alleviate the issue you had perhaps.

[@cadsonmikael9119]

Very exciting project. I think that the complexity increases with a gearbox like that, rather than coaxial direct drive motors. I also think that a coaxial setup would make efficiency improved by being able to regulate the propellers to different rpms when concidering a rotational airflow. Also, one might concider that from a sefety perspective with coax motors, one failed motor would lead to at least some power left to land harshly. I had the same idea with a gearbox for a submerged AUV we were looking at, but we ended up using coax motors in the end. Looking forward to see this in full scale and great work with the welds there!

[@GamerLudwig]

It'll be interesting to see this things performance Especially considering how putting the propeller on the bottom usually isn't great for stability

[@laddaevolta]

Thank you for sharing this building journey. Much appreciated and looking forward for next update!

[@ahaveland]

For me the aesthetic would be efficiency, performance and flight time - but if anyone is worried about looks, just make a skin for it that makes it look like a flying saucer. A ring around it like the intake of a ducted fan would be able to make use of the Coriander effect too. Will be fun to see what size CF propellers you create for it, and the design/build process - 4m diameter? Same or different pitch for upper and lower propellers?

[@freddotu]

Coriander is an annual herb in the family Apiaceae. Coandă effect might be consideration here. (smile)

[@ahaveland]

@@freddotu hehehe! doh of course! You're right! Question is, should I correct it or leave it in place?

[@freddotu]

@@ahaveland If I had made such an error, I'd leave it to avoid confusion for other readers.

[@imakedookie]

mmmm coriander.. now i want some navratan korma

[@monad_tcp]

Aesthetics is in the eyes of the beholder, I think that machines that expose the inner workings and are made pure for practicality have a beauty of their own.

[@KiR_3d]

Hi! Will you calculate your fan blades in dynamics in a CAM software? I'm concerned about the extreme points of their positions which can be reached in some air pressure/humidity conditions and also depends on the dynamics of "driving" the aitcraft. I've studied in the Moscow Aviation Univercity on the "helicopter construction and design" cathedra. Helicopter wings' dynamics is the most complex aerodynamic subject that I know. Of course those wings are not fixed (as in your small model), so they "flap" over rotating cycles. Nevertheless, your wings will flap too.

[@rayeaglenz]

Well done, a great interesting video, clever gearbox build, looking forward to your next video, thank you 👍😊

[@malakiblunt]

with an optical thermometer you could compare the temperature of the bearings to find out if one is misaligned

[@imakedookie]

preload could be off, alignment could be off, could be inappropriate lubricant, .... IR thermometer sounds like a great diagnostic tool!

[@iamkian]

Amazing build. Happy 2022..

[@mattiasfagerlund]

Cool stuff! You should totally call it the Tellar Lander

[@captainTubes]

You might need to construct the housing from billit with upper and lower sections that get bolted together instead of that tubing. Theoretically the housing could be mostly one part with a gasket and plate to close it up. Of you are worried about how it looks makes it look like a UFO

[@imakedookie]

how much material are you expecting him to be able to buy for that idea?

[@captainTubes]

I'm not expecting anything, I'm talking about making it work ✌️

[@Chris-bg8mk]

As you know the gearbox is a single point of failure. Why not direct drive each prop with two motors. Eliminate parts, weight, inefficiency. Increase actual redundancy.

[@woden79]

Could you put the gearbox below the propellers? And so transfer centre of weight down. Or would that interfere with draft from props?

[@hopetoretire]

Why not the motor on the botton? Thanks for the genius content.

[@JDrwal2]

Many people made a scaled version of it, including myself. US Army made a full scale version long time ago. Your main problem will be tipping over during landing in the wind or anytime you have a lateral motion during landing. It will just fall over sideways because of high center of gravity. Taking off is also tricky for a manned flight because you cannot do it slowly if there is any wind. You must do it really fast. Let us know how it goes. Most people before you failed because of the reason I mentioned. Some had to resort to other means of stabilization.

[@prof.heinous191]

1) Film making is great!. 2) Form from function, keep it honest. I guess the landing legs will have to be wider apart to safely accommodate the higher CG of the pilot, so its overall shape will be very different. I do hope you get good business backing for this baby should you go ahead with it, you've already got one flying machine I wish I had!

[@alexscarbro796]

You raise a good point about the current crop of consumer/passenger VTOL aircraft and that is that they may look pretty,but I wouldn’t want one within a mile of my home. All those EDFs/jets make them so noisy, that a helicopter would be less disturbing. So, it would be nice if a consequence of your design would be a quieter solution. I’m really looking forward to watching the build progressing.

[@drewgossage8842]

Love your uploads, thanks again for your content amazingdiyprojects!!

[@tubedag]

Gonna call all things flying "Tellus landers" from now on!

[@rogeriodossantospereira9220]

seus projetos são incríveis , aguardando o proximo video ansioso !!!

[@CorndogBrownie]

I love the video, first time watching you and instantly subscribed. But if I could just mention some stuff, these types of gears require the correct depth of engagement with the others in the gear train. Some good videos to watch about this are car differential rebuilds/re-gearing. A simple grease pencil can help to see the engagements pattern between gears. Could help with the extra friction. I’ve been a machinist for over a decade now, and I love the troubleshooting of how to turn the bore on that long chunk of tube, in your little lathe. Love ingenuity.. Keep up the awesome work, and peace and love from Canada 🇨🇦

[@LQhristian]

Another excellent project!! Perhaps this propulsion system can be placed in the center of a 'double saucer' shaped hull/body?? 🙂

[@deeareus9886]

wow!!! nice work, i’m more plastic guy, but i love metal too

[@czoknorris]

How is that redundant? If any of the four motors seizes or the gearbox seizes (e.g. because a tooth breaks), then everything crashes. Why don’t you have two motors driving the two counterrotating propellers seperarely? Or at least a ratchet mechanism at each motor shaft in case one seizes. E.g. when a motor esc fails shorted (the mosfet shorts).

[@Ben-Dixey]

Great video and progress thanks for sharing. Are you relying on sealed bearings to contain the oil or have you got rotary shaft oil seals in their too? you could hook up an oil pressure gauge to check the gearbox oil pressure. look forward to your next video 👍👍

[@amazingdiyprojects]

No proper seals at this point except where the main shaft exits the gearbox. I expect the outboard gear oil to soak all the bearings in the gearbox . Might have to make a more active oil system, forced? external radiator?, if everything else turns out well enough to bother with refinements. Did your tuned exhaust help you with the apparent lack of power? Im thinking a used motor might not deliver (even close to) original specs. On the other hand your measured rotor RPM seams promising especially considering the fairly steep pitch, 6 degrees. Looking forward to your next update as well regardless of the outcome!

[@Ben-Dixey]

@@amazingdiyprojects I can't imagine you needing any external oil cooling, I suppose it depends on the amount of oil and surface area of the gearbox housing to transfer the heat away. The Nolan coaxial didn't have any oil cooler and that had 120hp going through it. I'm sure you will be monitoring the temperature. What hp are you planning to put through it ? Decided on blade type and diameter yet ? My tuned exhausts will hopefully give more power but I take your point about the engine being used, new test coming very soon I hope it will be capable of lifting completely this time so I can experience some of what you have managed to achieve in the past. 😀

[@bigratkiller1]

Hi, always love your projects. Do you plan to have a more aggressive pitch on the lower prop to deal with a dirtier airflow which could mean it's doing between 20 to 25% less work than the upper prop?

[@imakedookie]

big.

[@sky173]

The leaking grease could be from the lack of thrust bearings in the four smaller gears. I don't remember you mentioning what bearings you used in those areas. You may want to check on that. Can't wait to see this progress. This will be incredible. Stay safe.

[@localhawk1]

hi, please take also a look this video of an existing coax helicopter - kzbin.info/www/bejne/ZoXbdXd5dtibaaM - "double sided gear belts" are often used. it is well tested. you can use here also two motors (up and down and hold the drive gear). anyway thanks for sharing and best regards

[@bigjax7371]

Hi! I found your channel a while back when you were working on the butane turbine engine and I couldn't help but asking if you think you'll pick up on that again or if you've lost interest in it. I love your videos and I hope to see more from you!

[@ttmallard]

A suggestion, put the propellers above the load, things are more stable especially in gusty winds, easier to land as well. With your setup seems worth a try to flip it over, like others appreciate the experiment. Cheers 🍺

[@cloudusterable]

Am I right in thinking that the Crown wheel and pinion gears are from a marine outboard motor ?

[@amazingdiyprojects]

Yamaha 90hp.

[@carbonie_fibraro]

👍

[@andersson.l.e]

Nice. Waiting for the next one then.

[@DktheWelder]

That is awesome! Are you using a polini motor two stroke engines? I saw a box in the background. Having two big props will be nice and efficient, it’s kinda like the old flying platforms hiller platform I think but your design is really cool with the fins that steer it👍

[@Acamperfull]

Thank you for this very nice and interesting project ! I wonder how you plan to control the amount of thrust? With fixed pitch propellors and combustion engines I suppose the thrust can not be controlled just by the motor throttle because it would react too slow?

[@MrTjornevik]

Älskar verkligen att få följa dig i dina projekt!

[@Alexander_Sannikov]

did you borrow the outro line from Applied Science? :D

[@PhG1961]

Cool video, what took you so long... ;-)

[@JDrwal2]

Do you have a website, or another KZbin video that you give more details of your project? Would you share with us what autopilot you use, what firmware, do you modify firmware or you use it as is…? If you’ve already discussed those details in another place, it’d be awesome if you could provide a link. Thanks and good luck!

[@grottonisred6541]

Great channel and a really honest guy. Regarding the grease oil leakage from the one bearing, is it possible this bearing is getting a much hotter than the other bearings possibly due to some mis-alignment in the gears? It's just a thought ...

[@peteradshead6566]

If it hasn't already been suggested a magnetic chip detector in your gearbox might help provide advance warning of any serious failure.

[@A.Netizen.Since.2010]

..Much respect to your channel sir! ..I'd like to know if you're done with chAIR-craft project or thinking about adding new developments. . .cause it was amazing & very much inspiring..... . 👌🏼👍🏼

[@dbcooper1435]

Could you use independent motors and not need gears at all?

[@JimsEquipmentShed]

Your version of; “surprisingly simple”, and mine, are kilometers apart. ;-)

[@TheESS1]

Where do you buy the small aluminum tubes? :)

[@Johow]

So cool again. Keep it going. Love your work!

[@icebluscorpion]

You don't have to justify the look of your aircraft people that complain about the esthetics have always crap in the head anyway. The Wright Brothers had a crappie looking aircraft to but it flew smoothly and perfectly. To prove that they are capable to build a flying object. If you have a concept to test if it's viable then is esthetic the very least thing you should think about. That's the problem of nowadays companies and Kickstarter idiots they make false claims by showing pretty looking 3D models without even having tested the viability of their concept/products. You are the opposite of them stay true to yourself and your work. Keep it up pal! Honestly between us... I like the look of your aircraft. It has a stempunk apocalyptic look to it. It has this raw pure machine look. Like a Locomotive or "The Terminator without the flesh cover*- look. Anyhow your idea with the redundancy is great. I think if you add the other motors to it, then it should work just fine. You should consider to disconnect the failed motor such that it doesn't break the other motors. You might get coupling issues with the motors connected directly to each other, especially when they all want to turn with a constant speed. You will need some sort of one controller that is able to track the speed and phrases of each motor and moving them accordingly.

[@fuller-media]

Make two and you have the beginings of a 74 - z speeder :) I can see you slung nicely between.

[@zealeigh]

So, I'm about 1 minute into the video and I have to say... You're missing a claw hammer and a bastard-file. Its off my chest now :'D - Also. Please don't apologize for the time you put into these videos. Watching the footage and having you talk over is incredibly interesting. I appreciate it!

[@zenzen9131]

Frank Lloyd Wright - "If it looks right, then it is right" :)

[@gth042]

For your health, you may want to take a deep look at a KA-50 transmission. :)

[@KymHammond]

20:30 flight aerodynamics as embodied in design structure versus pure mechanical mathematics realised as a machine… isn’t what you are searching for here, as a description,.and in same sort of poetics sense, is to see your ‘contraption’ as a “flight gimbal”? While it may look awkward what it does in capturing movement or gyroscopic flight is really beautiful. In the same way a gyroscopic pen produces something more processionally pleasing than say just a jar or suspended paint above a canvas, maned flight is as much about the aesthetics of precision control than just the feeling of suspended weightlessness found in a complementary aerodynamic form.

[@moinshaikh2265]

So impressive. Lovely.

[@grajeshrajesh7534]

Your Experiments is very nice I am on of your subscriber. What is your name

[@nathandavis5021]

Maybe I'm missing something, but wouldn't putting the device (used to measure the inner diameter of the cylinder) skewed in the calipers then twisting until their faces are parallel cause the calipers to separate a distance larger than the device? The max contact distance from any point on ends of the device (simplified by a rectangle shape cross-section) would be greater at a slight angle than when parallel to the faces.

[@amazingdiyprojects]

Sorry, did not show a close up of the tool. The ends have a spherical surface which prevents that from happening.

[@makoado6010]

the pkz-2 was pretty similar form 1918's hungary. made to replace artillerry controller ballons and its was electric. the "pilot" sit in a small basket high over the propeklers. i cant link because the youtube remove comment... but u cant find wiki page with goole "pkz-2" .

[@GiffysChannel]

Looking forward to this

[@paranoiia8]

Sooo much work.... But I hope it will end good!

[@Flieger46]

Always very interesting

[@petter5721]

När jag ser ditt bygge tänker jag på ”Avro Avrocar”. Ser att grunden i din maskin kan bli en ny version av den i framtiden 👍🏻

[@bussi7859]

Change the prop to one 3 bladed and one 4 bladed

[@nnaanyieze]

Can i work for you!?

[@vovochen]

You are cool.

[@WeAreTheTrueMedia]

I know you don't post videos very often, but when you do they never fail to disappoint and always inspire me to find new solutions for myself 👍🏻

[@nochan99]

I think you mean "never fail to impress" 😅

[@monad_tcp]

3:35 WTF is she doing with that dangling iron bars

[@scarakus]

1 bad bearing in the bunch.

[@pauldowner5519]

I want to supply Ukraine with a disposable drone. Could you design a pulsejet to power it?

[@SumUnicus]

Why not use the splines, and even lock the pinions with outer locking ring? Ohh... I see now... That was not much of a spline :o

[@amazingdiyprojects]

I lack the knowledge and equipment to make proper splines so.....

[@SumUnicus]

@@amazingdiyprojects naahh... U will find knowledge 😃 But anyway, there wasn't much splines to talk about.

[@harminderbhamra5097]

Hello how are you feeling better today now for everyone else clock construction company foundaion fundamentaly at the prices for the beginning of emotionally exhausted transmission fluid type and relationships lol Excitement with us happy ness for this mechine product of the following reaction for prices for sales

[@IrenESorius]

+👍‍‍/👍‍‍

[@choke666]

666th like