RC contra-rotating, variable pitch prop for a Westland Wyvern

[@christiansprojects-cgmanuf1426]

Wow, somehow the KZbin algorithm has struck after more than one year. Thanks for pointing out that I should have worn safety glasses - you are right. I was careless there and I will definitely wear them every time in the future. I won't sell any plans or parts at the moment, sorry. There might be something in the future but not now. Oh and sorry if you don't like the music, it's what I like. Thanks for all of your kind comments!

[@tonywilson4713]

Dude this is awesome but can you (and everyone else just stop with the bullshit music). Anyone with a brain wants to know how you did this and what you were doing at various stages. I froze this at 3:23 because the music was driving me nuts and I can see this really interesting spindle unit for the inside machining. Most people would use a boring bar. I'd like to know what it is you have done there. I've just ordered a lathe and am waiting for delivery. I'm considering what my first few projects are and a machining head like that is one thing I am considering. Most people find a way to mount a Dremel or similar but yours looks specific and it looks like it does a great job. You don't need to go into every last detail but give us something. Who designed this, was it you, someone you know or did you buy plans from somewhere? Was it based on something specific or is it an original design? What types of aluminum are you using? Do you have a parts list? This is an awesome piece of work. Please share with us how you actually built it and what decisions you made.

[@swisscheeseaviation590]

You did an amazing job with this, I quite like Dream Theater so the music doesn’t bother me at all.

[@Shine-bm6nm]

Impressive! I think If you increase pitch of second propeller will gaing some efficiency

I was about to say the same thing as @Shine. A steeper curve for the rear prop will increase efficiency. I guess it"s asier to obtain by using two servos for prop pitch. Great work, man. Simply beautiful!

[@lavirider]

Who cares about the music , I’m drooling all over what you did ! Please inform when you’ll be willing to do another set ! Thx Merry Christmas

[@Dv087]

Absolutely incredible. You should take this model to the Top Gun competition.

[@clarkstonguy1065]

Wow, either contra-rotating or variable pitch would have been cool on its own. Combining them together takes it all together further into the realm of insanity. But you know what they say about the fine line between genius and insanity! Big thumbs up for a cool project and some excellent machining skills.

[@christiansprojects-cgmanuf1426]

Thanks, I appreciate!

[@pumarolz]

Never before seen stuff , be smart keep record of everything and sell it to the masses, you shall be remembered

[@christiansprojects-cgmanuf1426]

Thanks!

[@robm3534]

Machinist here, well done my friend. You have balls of steel to actually fly your model with such an assembly of lovely machined parts. I truly understand what went into this from idea, to modelling, to actually making chips... Fuckload of work. My hats off to you!

[@christiansprojects-cgmanuf1426]

Thanks my friend!

[@Conlan0215]

I could watch another hour of your build/design process. What an impressive project.

[@ronaldobrien211]

One of the best RC projects I have seen undertaken. The complexity involved must have been chaotic. I simply love the end result. Thank you for sharing your special moments with us. Cheers

[@davenone7312]

You machinists are true artists! You use lathes etc instead of paint and brushes is all. Simply Amazing!

[@euzebiodiam]

Impressive! The paddle pitch control was unbelievable. Cristian's great work of art.

[@Spino.007]

The sound of the Wyvern in War Thunder sounds terrifying and so does this RC Scale Wyvern! Sounds just like the War Thunder one I love this as being 13 currently and being into WW2

[@nadzrihassan903]

The attention to details were out of this world. Having it flown was a bonus. Next complicated project please 😁

[@chrisrose3769]

Wow, I loved seeing the details of the mechanism for controlling pitch. Mad "props"!

[@BrianPhillipsRC]

Amazing build!!! Loved seeing the complexity of your setup. Thanks for taking the time to share this!

[@christiansprojects-cgmanuf1426]

Glad you liked it!

[@TheGryxter]

2 Things. 1) That is beautiful engineering work. You are talented. 2) You should wear safety glasses when running a lathe. Do as you will, but you cannot go back if something bad happens. NOT criticism, just honestly care about your sight. Keep up the amazing builds!!

[@chuckeberth4370]

Absolutely fantastic feat of model engineering. I'm very impressed.

[@Acheiropoietos]

Saw the first shots and thought it was real! It must be so satisfying to see it fly.

[@kwhp1507]

This is awesome! I have seen a couple other videos of people making in flute adjustable props, it not a set of contra-rotating props! Very impressive

[@ernestoterrazas3480]

Congratulation beautiful project and very well manufactured. You are a very skilled machinist

[@SixPackDan]

Holy cow the engineering in this its just flat amazing. i could stare at this beautiful piece of work all day!!!

[@carleldridge8317]

I was absolutely amazed at your skill and creativity. I have often wonder what type of individual would be capable of designing and building a Swiss Watch, now I know. Great job and thanks for reassuring my faith in human creativity....very cool.....!

[@SuperScottCrawford]

Also, you gotta be Swiss aka a Swisstian or Switzerlandian. Otherwise, he'd be just a regular, boring skilled watchmaker. Bleagh!

[@DMSparky]

Very cool! interesting that with electric motors it’s way more efficient then a single engine with gear box configuration. Also great work, looks like a piece of jewelry! Edit: the whole build including aircraft is amazing. I’m sure the original designers of the aircraft would be blown away!

[@tomaskonkol8894]

I'm speechless, amazing work,great design. Im crying when I have to do something simple in F360 for 3d printing 😁. Thats how model should be done closest to original as possible. 💥👍

[@unforgiven1224]

Thank you for making a dream of so many RC enthusiasts a reality! Truly amazing......

[@s9523pink]

Amazing, brilliant! Even sounds like a miniature Wyvern when flying! Please post more flights and updates!

[@theobserver1219]

This is a great project! Great engineering and lathe work! Did not know guys like you was out there! I'm a believer now!

[@brucemitch928]

Superb job but had to turn the volume right down

[@Andrew_Fernie]

Great work and an awesome result. I can only imagine how many hours went into this.

[@gsisk911]

Dream theater music and RC = like from me Edit after watching the video: that’s really sick. Looks like some incredible engineering to me.

[@hugh_jasso]

If i had these skills i would build Voltron. Amazing craftsmanship!

[@christiansprojects-cgmanuf1426]

Thanks man!

[@OneOfTheRobs]

You are an absolute genius... My goodness that looks beatifull. I was prood of myself for building an FPV quad. But this is from another level. Wow!! Just WOW!!!

[@christiansprojects-cgmanuf1426]

Thanks man!

[@joannawhite1841]

The absolute Best KZbin presentation out there! Thank You Christian's Projects for showing something of worth.

[@TheDgdimick]

Pretty "simple" design when you see it - lots of moving parts that have to be exact. Thanks for sharing it with me.

[@miken966]

Hated the music, but loved this amazing project! Excellent job.

[@daniel_f4050]

Absolutely the most impressive upgrade I’ve ever seen. Bravo.

[@Username64870]

Superb work..it seems you have lots of engineering wisdom..keep it up.

[@engineerdan9633]

Truely awesome job on a difficult task! Love the DT music too!

[@christiansprojects-cgmanuf1426]

Thanks!

[@keyvanentezari466]

I just finish my coaxial counter rotating propeller mechanism today... your mechanism is so much better and industrial... however mine is good enough. Fantastic job, tnx for your video👍👍

[@christiansprojects-cgmanuf1426]

Thanks man! On what plane are you installing it?

[@keyvanentezari466]

LowFlyer I make a coaxial drone with swash plate for blades angle control... My job is not at your level and your proficiency but it is good enough! 😊 Your engine is perfect👍 I can send my coaxial video for you if you send me your Email or virtual society ID.

[@Joyplanes]

That is top-level work!

[@beaker2000]

gorgeous. Beautiful work, and incredible engineering.

[@DavidAndruczyk]

Extremely impressive! Here’s an idea I’d suggest to try. Get a larger ESC and hook both motors in parallel but reverse two of the leads one the one motor so it spins the opposite direction. This way the motors will be synchronized all the time and it should be torque free at all powered speeds. Independent motor drives might have one faster than the other as shown in your video giving you an ever changing torque moment/P factor. Your machining, design and build skills are top notch!

[@wh1teafr1ca]

It will still not be torque free as the pitch has to be matched as well. This will help synchronize, but there has to be a mixer that has the rear prop at higher pitch or have base pitch be higher on the second row. This is necessary because the second prop is encountering accelerated flow.

[@christiansprojects-cgmanuf1426]

I think that my drivetrain is torquefree as I adjusted the blades pitch by measuring the current of each motor. Each motor has the same current and current equals torque so it should be torquefree.

[@bertschoofs8494]

@@christiansprojects-cgmanuf1426 You can easyly? test wether it is torquefree by fixing your plane on a swiveling platform and measure the torque acting on the platform at running motors. Marvelous desing and manufacturing too. Deep respect!

[@christiansprojects-cgmanuf1426]

@@bertschoofs8494 Good idea! I might try this some time.

[@cf6282]

Brilliant work, brilliant design. And those electric motors looked pretty heavy in your hand. It will surely be very powerfull. Incredible how that technology is being used. The batteries will surely be amajor part of the aircraft as well!

[@christiansprojects-cgmanuf1426]

Ohyes, they are. First, I flew it with 6S 5800mAh but at 120Amps, they were too weak. I now fly it with 6S 7500mAh.

[@vigilante004]

You are an amazing engineer! I wish I had 1/10 of your talent. I’d like to see that motor used in a vertical take off drone.

[@gangstarsnowman7773]

It sounds insane, greate work on the engineering and design

[@flyinfella]

Amazing work! I love the Dream Theater background music, I went to one of their concerts once. Truly an experience.

[@crazybrit-nasafan]

Incredible engineering skills. That looks awesome. Incidentally the first Wyvern you showed at the start is the only one that flew with a piston engine and is the sole Survivor of the type.

[@odem2002]

Badass work. Really impressed with the design and machining. Keep it up. I was just looking into building one from Vanguard plans 75"

[@christiansprojects-cgmanuf1426]

Thanks man! Wow, the Vanguard looks nice. 75" is a good size, big enough to fly well. Do you want to built it with counter rotating Propellers?

[@marioharada]

What a beautiful piece of craftsmanship!

[@richardschindler8822]

You are a true craftsman. Amazing work!!!

[@barryp4700]

Congratulations on an amazing piece of engineering and a beautiful model! I like the Porter as well.

[@christiansprojects-cgmanuf1426]

Thanks!

[@martynh5410]

Brilliant engineering and craftsmanship!! I really enjoyed watching this! Just FYI: When I was at school working on lathes and milling machines many years ago, we were told for safety we must wear eye protection. I didn’t see that at 3:19 on your excellent video! Edit I just read your note and you were already aware of this....

[@pjak2000]

Nice piece of engineering. Great job on this design snd workmanship.

[@sky173]

Awesome job. Love the music... DT rocks! Thanks for sharing.

[@christiansprojects-cgmanuf1426]

Thanks man!

[@larsrosing5033]

With feathering count er weight on the propblades! Amazing, well done, sir! 👍

[@SuperScottCrawford]

I've nev er seen counterweight spelt like that be fore.

[@robertmckay694]

Mind blowing quality at 6am. Well played sir.

[@mswinford]

Fantastic work! It had to be well modeled in CAD, and of course you knew that.

[@somiprakash1347]

Just amazing piece of mechanics and design integrated. I have always wondered how engineers like you are able to analyse as what sizes and design of the mechanical parts would fit aptly with those of electrical driving units , and also achieving best output . And yeah man , do wear safety glasses , or please test the propellers from a distance , I tried to analyse the PID response of a quadcopter and ended up getting my fingers into the running props . be safe buddy !

[@2212db]

Safety glasses would have protected your fingers? How?

[@reckemroysrc3764]

Very impressive work. Your a great machinist. Awesome plane.

[@zachnunes123456789]

Huge respect and awesome to see someone bring something new to the hobby.

[@DoRC]

Wow that's the best sounding electric airplane I've ever heard. Congratulations on an awesome project.

[@johndeere365]

Brilliant plan layout and machining work !!

[@cf6282]

Amazing engineering! Well done, this is nit an easy job!

[@edwardarruda7215]

Excellent craftsmanship

[@HighFlight2k2]

You sir are a wizard! Well done!

[@keithcovington3297]

Absolutely incredible craftsmanship and knowledge to design , build and create such a precision mechanism Sir !! I salute you and wish that had your skills knowledge and sheer talent. I'm quite sure of the monetary values are figured into that equation but regardless of the obvious one hell of a fine job Sir !!

[@christiansprojects-cgmanuf1426]

Thank you very much! I appreciate that.

[@rajktewari]

Marvelous 🤗 Lucky person you got all the facility to fullfill your dream. And a beautifull creative mind. Great job 👍

[@christiansprojects-cgmanuf1426]

Thanks my friend!

[@sk-mf9gw]

Stunning work! 👍🏻

[@neogator26]

The video quality was just fine and your build was nothing short of fantastic! Let us know if you decide to sell these. I completely understand about why would wouldn't sell the parts if you were doing side projects at work to make this. I also use work software for side projects that I likely wouldn't be able to sell.

[@sblack48]

Brilliant work. Don’t understand the need for loud music. It detracts from the excellent content

[@akbarshoed]

He never said a word. Why. The fuck. Do you refuse to turn the music down? Go to hell on your own. Leave us out of it.

[@bamaxrvfr786]

Thank you for the video and the Dream Theater!

[@akbarshoed]

The best KZbin video on contra rotating props!! Fantastic!

[@RBAERO]

Great job! Really impressive, thanks for sharing and keep work!

[@christiansprojects-cgmanuf1426]

Rudá Bittencourt Thanks man!

[@RBAERO]

@@christiansprojects-cgmanuf1426 I talk to you about this system. How is the best way to contact you?

[@christiansprojects-cgmanuf1426]

@@RBAERO You can write an email to: [e-mail]

[@kamboora]

man! I'm stuck with your video watching it whole day today, this is amazing, Weldon 👍👍👍

[@eorilla]

very satisfying project, i like that variable pitch mechanism,

[@keithwhisman]

I hope you never feel regret for not wearing eye protection in your shop. Besides the risks you took to your eyes it looks fantastic.

[@davidb6576]

Seconded. No safety glasses is no smart...

[@OrangeApocalypse]

Yes ! Even Colin Furze wears a safety tie at least ! 😄

[@SuperScottCrawford]

Maybe he wants to go blind to show people he can still do it sans eyes. Like when Arthur Fonzarelli had to rebuild his motorcycle when he couldn't see after Richie Cunningham disassembled it.

[@christiansprojects-cgmanuf1426]

Thanks for the feedback.

[@calicolombia1004]

No se preocupe, algunas personas sólo saben criticar, no saben hacer las cosas que usted hace, mucho menos saben orientar con respeto. Admiro su capacidad para hacer este tipo de cosas. Me gustó mucho cómo resolvió el problema de alimentación en su motor radial de dos tiempos. Yo no sabía cómo resolvelo, gracias. Yo también cometí a veces el error de no proteger debidamente mi cuerpo al trabajar, pero le animo respetuosamente a hacerlo. Un abrazo y mis respetos por su capacidad y habilidades.​@@christiansprojects-cgmanuf1426

[@ollyk22]

Superb work, but one day you are gonna lose you most precious tools, them eyes fella.

[@jamesthreats5800]

Mad scientist laugh at 8:32 lol excellent work. Pure work of art

[@christiansprojects-cgmanuf1426]

Thanks!

[@Andy-df5fj]

Color me impressed! You've got skills dude.

[@aussieaeromodeler]

mechanical art , that's bloody beautiful

[@bilge677]

great plane, great engine and great taste in music!

[@christiansprojects-cgmanuf1426]

Thanks!

[@salvadordavalos5150]

Top quality work, congratulations.

[@guyroy4857]

I’m currently building a Bill Horton wingless. This would work great. Thank you for your post

[@miguelquiroz1550]

What a beautiful design Mate!

[@christiansprojects-cgmanuf1426]

Thanks man!

[@mrpistachios]

Thats super awesome, the sound is amazing

[@georgevprochazka5316]

You,ve got skills Mister !

[@christiansprojects-cgmanuf1426]

Thanks!

[@johnb917]

Pretty cool! Imagine doing that with a slide rule instead of a computer like the first dudes!

[@christiansprojects-cgmanuf1426]

True. I'm always impressed by the looks of WWII technology. They did way more complicated things but without any calculator or computer.

[@gdaeroartpac9621]

That's some serious work. Amazing! thank you for sharing the video

[@christiansprojects-cgmanuf1426]

Thanks!

[@laizalott]

8:17 the excitement of success! Or a chill in the workshop? Either way, woohoo it works!

[@tedgerhardt2619]

Great project and machining! Better get some safety glasses for next time though 🙂

[@DNMEBOY]

That thing screams! Absolutely insane!

[@sidtp7307]

Insane skills! Hats off to you

[@bradchampion8072]

Damn that's one Big Ass Engine! When watching the part of the video of the Plane flying I couldn't tell just how long the Props were but Damn I see now lol. Oh I left something out Awsome build great Job!!

[@gta4ever3003]

Awesome work Christian! Master of Mechanic! 👍👍👍

[@christiansprojects-cgmanuf1426]

Thanks!

[@BobSmith-mc1et]

Exquisite and innovative piece of engineering. Well done. (BTW Is it possible to do future videos WITHOUT the music please.)

[@TRIPWIRE330]

How about we mute ur opinion BOB

[@cuttymaximus]

🙄

[@oneselmo]

Emmylou bubuli Parkay Oh Emmylou, that wasn't called for. Some of us have spent time on a lathe and milling machine... and we want to hear the machining sounds! It's machine porn to our ears! Everyone's musical tastes vary, but a lathe is a lathe; we want to hear it in action.

[@TRIPWIRE330]

@@oneselmo I get ur points..but,..and I say this with perjury..when it's ur video put it to any sounds u like.. So "Bob" should refrain from dictating..or not.

[@billbrisson]

4 more and you can build an amazing TU95 Bear! Amazing work!

[@barryp4700]

Heh, heh, I was thinking Avro Shackleton! Bear would be amazing as well. He just needs to do 7 more and both models. 😀

[@SuperScottCrawford]

3 more, amazing mathematician.

[@billbrisson]

@@SuperScottCrawford well I was thinking the Wyvern would still need a power plant...so ya 4 more thanks for that, the answer to "who was the worst American F1 driver ever?"

[@captarmour]

fantastic work! im blown away!! with the torque from zero rpm of electric motors i though that they would handle a large enough speed range that variable pitch a want and not a need

[@christiansprojects-cgmanuf1426]

Thanks! Well, that's true. For an RC-airplane like this, variable pitch is not really needed. I just wanted the model to be as close as possible to the original and I like to build things that don't already exist. In this case, the propeller would be to big and the current to high while the plane is on ground. With fixed pitch, the Propeller would have to be much smaller but the plane would be just as fast. So I made it mainly for fun ;)

[@captarmour]

@@christiansprojects-cgmanuf1426 thanks. very interesting. even though this high current is for a short time, would it still be unacceptable? i'm thinking for an experimental with a low powered IC engine if adding an electric motor just for the TOR would be as effective as a variable pitch(constant speed) prop... additional advantage would be redundancy in event of engine failure

[@christiansprojects-cgmanuf1426]

@@captarmour Due to the large four blade propeller, the current in high pitch setting climbs close to 200 Amps on the ground. This might work for a few seconds but I just don't feel comfortable. I have two pitch settings. Takeoff/Landing and Flight. I set the pitch so that the current is around 120A on both settings. After Takeoff, the current quickly drops to 70-80A. I then switch to high pitch and the current goes up to 120A again. The plane only has 6 flights now but until now, it worked great like this. Your hybrid-plane idea sounds very interesting. This could work well!

[@captarmour]

@@christiansprojects-cgmanuf1426 Back in 1983 when I started flying turbo props, Embraer 'Bandit', I wondered why didn't all engines use Starter Generators, makes so much sense. The next step up is the 'Starter/Generator/Motor' which I see Mercedes Benz has in one of their new engines. I think we will see many more in the near future as using Electric to enhance performance also positively impacts economy.

[@randymulhern1290]

Loved the Bridgeport plunge cutting. 👍

[@groundzonepilot7536]

That was brutal work & skill you presented in this video. Amazing job, really. Keep up the good work ✈

[@55yxalaG]

That thing sounds like a BEAST!

[@nevillecreativitymentor]

Oh my god ... such obscenity ... no censorship ... i mean there is a limit to aeromodelling porn !!!!

[@chartphred1]

Nice engineering, but by fuck that music drove me crazy 😜

[@demiurgiac]

Did you maybe consider muting the audio? There is a concept...

[@christiansprojects-cgmanuf1426]

Sorry but that's what I like ;)