TWIN RC Wankel Rotary Engine First Run!
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- Опубликовано: 21 дек 2020
- The final part of the twin rotary engine. It uses 2 x O.S Wankel 49pi II engines. It has a great flaw at the moment which I'm going to fix it at some point. The eccentric shaft is not hardened. I made it out of ck45 steel. It's very durable and can be used as a shaft just fine. However the lobes, as well as the front and rear of the shaft, spin inside 4 needle bearings in total. That means that the shaft will be chewed by those hardened needle bearing material. I need to harden the existing e-shaft, which is the wrong method since it's in its final dimensions, or make it all over again. The process is as follows: Turning on the lathe leaving it slighltly overised, quenching and then grinding. I don't feel very confident about the last two, but I'll try it. Any ideas on what material can use to avoid the hardening and grinding? Something that can be turned only with carbide I guess.
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Oh boy I can't wait to see this be out into a model rx7
I knew I wouldn't have to write that comment!
imagine he puts it in a c5 vette
@@SlowMenWorking a rx7 deserves a turbo 4 rotor
@@SlowMenWorking is this rob dahm? ahahah
@@MrSnowSmith "Hi, I'm Rob Dahm"
Engineering, machining, and RC...what a great combo this channel is.
I'm an aerospace engineer and I am really beginning to like this channel.
I'm not certain what his background is but there's genuine creativity and innovation in this and that is rarer than you think. there's an engineering methodology called integration where we take existing unrelated things and combine them into a new solution. It sounds very obvious but its far from what many engineers are taught and even further from what they practice.
Engineering practice is dominated by business concerns not innovation. if you breakdown what a lot of technology companies actually do there isn't as much innovation as the PR claims.
Jeff Bezos has publicly admitted that Amazon isn't that innovative. Internet marketing existed and parcel deliver existed, he just combined the 2. Combining the 2 in the way he did was innovative, being a greedy sociopath who pays his workers minimum wage was borrowed from others.
Its why I'm liking this channel more and more, there is actually stuff I haven't seen anybody else do. They way he machined the eccentric shaft was very clever.
@@tonywilson4713 Small world, I worked as a technical engineer in the aerospace/defense industry lol And I agree, his projects are top notch in all ways, something not often seen, but always much appreciated.
Don't forget ASMR
@@tonywilson4713 Johnny is an ozzie
@@duydinhnguyen6225 If your referring to us Australians its spelt Aussie.
But really is one of us, because I've not seen or heard that before?
12:25 - Yep, that's about how quickly the fuel gauge needle drops in my FD too. Rotaries gonna Rotary!
Great work!
It’s rotate bro
Couldn't be more true than this 😅 mine does to
it must be so nice to feel a part you've made click into another part you've made
Johnny : What now?
Rotary : Need a big ass turbo😏
Rx7 say: Braaaaapppppp 💖
a miniature turbo does not give very good results (video of 04/19/2019) I would opt for a miniature screw compressor because the intake pressure is stable which will be better with a carburetor, for a turbo it would be necessary to have the same pressure in the fuel tank as in the air intake, the tank being partially filled with air this would create a pressure delay at the fuel inlet in addition the tank must be able to support the pressure
@@Spip-yt6dx I'm not exactly sure what tf it is you're saying but it sounds good so I'll go with it! Haha! Sounds about right!
@@Spip-yt6dx a draw through turbo setup would be a better choice vs a "blow through" turbo setup. You wouldn't have to deal with "boost prepping" the carbs nor matching the tank pressure and maintaining it at a 1:1 ratio. Downside would be the compressor blades would slowly be eaten away, but very doable. A screw style supercharger would be cool to see either way.
@@jeffbroxton988
if this kind of installation remains miniaturizable and takes into account the admission by carburettor why not
(PS: I'm not sure what "draw through turbo" means in French)
oh yeah, definitely needs a 2-rotor counterweight.
and a hardened e-shaft :)
And chrome plating on the irons
But first... an adequate cooling system.
A basic unducted fan isn't enough.
Without this, the other components won't suffer critical wear prior to meltdown.
Johnny: What Do We Do Next?!.
Me: Add 2 More Rotors 🥴
and call Rob Dahm!
😭😭💯‼️
Of corse!
💯💯💯
@@TqmmPl so he can come learn some shit?
I worked as a technician rebuilding gearboxes in a machine shop for about eight years. I didn’t do a whole lot of machine of the parts. Every once in a while, I could run a manual lathe or something like that, but my jaw was on the damn floor, most of the time watching you build this motor it was very impressive.
You are the only RUclipsr for me to say 'ah yes finally! He uploaded a new video I need to watch it immediately!'
Edit: thanks for the likes! And sure im gonna watch some of the suggestion that you all gave me.
Looks like you need some channel recommendations like "This old Tony" or "AvE" to fill that gap.
Maybe even some Click Spring.
AvE, JohnnyQ90, ColinFurze, zipties and bias plies all fall under that catagorie for me
RIGHT!
Don't forget Cody's lab
If Johnny entered Robot Wars, he would win every season hands down. What a talented person. Honestly this is my favourite RUclips channel, and the only bell notification I have. Brilliant as always.
Battlebots is on week 3 I think.. There will be an entry at the 500lb category.
*enters robot wars* yea so my robot hovers on jet engines since i noticed everyone is ground type...
But could he beat Hypnodisk?
Hp yes, Johnny on Att or Def: questionable. Battlebots isn't on horsepower alone
@@plageran how needs horsepower when you have the high ground via hovering
My deepest respect: You have some great knowledge, training and skill in mechanics and engineering as well as a well sorted machine and tools set. I also admire your clean and tidy working area.
No music. No commentary. Just pure raw videos that has been edited to the point of perfection. Just sounds of machines and him working with the tools. Damn,why i just discovered this channel? All these years feel like wasted for me lol.
It is so satisfying to watch. The 5 axis thingy,i fuckin love it. Man you are very creative and truly,this is not just machinery and things,this is artistry. Thank you sir for this videos. I will sub and keep watching you because im amazed of your skills.
manufacture, assembly, disassembly and forensic analysis, that was awesome
As much as I love the idea of seeing it in a car, hearing it wide open with a big prop would be better 😉😍
Tru although it has the perfect profile for fitting in a ducted fan.
The pure awesomeness of that thing puts any small engine I've ever seen to shame, plain and simple. Absolutely phenomenal engineering.
Johnny, you’re a GOD! Most companies that make engines use a team of specialists. A one man show making an engine that sophisticated is nothing short of incredible. It runs, and runs well! I couldn’t even imagine how to do this!
Just watching those machines do their work is SO cool imo. The amount of engineering that has to be involved is just mind blowing. Hat's off to you bro.
Jesus that thing drinks more than my baja
Rotary's are well known to be thirsty on both oil and fuel
I actually own a 13b peripheral port with 48 IDA carb, and at wide open throttle, it consumes 1 litre of fuel every 2 km... 300hp and flame out the back, makes me laugh at the fuel consuption
In 1972 I bought a twin rotor NSU Ro80 and it was thirstier than my friends Rolls Royce Limousine . I converetd it to run on LPG and injected oil into the inlet manifolds to get over the total loss system fitted, which made it run sweeter, and cost less than half to run on LPG.
@Robert Slackware true, very true. You can't make more power by burning less fuel 😁😁
Held up better than I expected, good job can’t wait to see the final version
I found this channel out off a random suggestion and couldn't be happier. It has put out nothing but pure quality material since
Hello to everyone from Ukraine, where it is the evening!
Johnny's video is just what you need before bed
Aye!
Hear the brap, see the flames, you’ve been passed by rotaries
Damn bro you just 1 rhyme removed from being a ring announcer for fighting sports 👍
Why do apex seals burn so beautifully?
Don't forgot the crack in your windshield from it spitting out it's broken apex seals.
Hands down coolest thing ive ever seen. need to see this in a full build!
Great work as always brother. Love your content. Can we all just appreciate the time and money that goes into this man's projects? Amazing stuff.
very high level of engineering displayed here. well done Johnny Q
This video drop literally made my day. Your work is amazing.
This is fantastic! Exceptional craftsmanship and video production is quite good as well!
An outstanding piece of work. The ability of the motor to spin up so rapidly when given some throttle is astounding.
Forget a flywheel that’ll just snap the E shaft, the whole rotating assembly needs balancing with a counter weight on each end of the shaft
Interesting
Maybe…but maybe not..rotors are 180degee out of sinc
The flywheel stores energy on a power stroke and releases it during lack of power stroke, delivering its rotational energy to rotate the engine instead. Considering the size of the engine and thus lack of weight to keep the rotors rotating on their own, it's indeed a good idea.
A well-balanced wheel shouldn't snap the eshaft either, and balancing a wheel is just a case of making a small inset where there's just that tad bit of material too much.
@@ujiltromm7358 I was speaking from experience not Wikipedia😂
Can't wait to hear this thing at full rpm, she wants to go
No I think she want to drink 😅😅
Sir I have never seen artistry like this. I have no idea what your doing most times but I know this a passion for you. Thank you so much for exposing me to something I did not know I loved. Please continue your work and giving us a look at it.
You got some mad skills bro. Love watching you work
I hope you take this step by step and build a 3 rotor then a 4 rotor.. !
I’m hoping so
I really hope so... maybe a model of Rob Dahm rx7? With working AWD??????
Everything aside... always astonished of the things he makes...
I don't think there's enough of these old engines left in the wild to do this. They haven't been in production for decades.
@@octane613 I think with the tools he has and maybe a bit of external contribution he could probably fabricate all the parts by himself... probably for the irons and rotors a bigger cnc is needed but aside from that... apex seals, bolts, spacers... I don't think for him would be too much of a stretch... it is a stretch for the wallet I would think...
That is insane, TRY to make a RC Mazda RX7 version that will be a very cool project love the videos!!!! Sounds AMAZING
I love that most parts of everyone of your projects are custom made
Congratulations on producing such an amazing workpiece.
Wouldn't it be a good idea to coat the billet plates with some hard coating, like hard anodizing, nicasil or hard chrome plating? It will reduce friction and if you give them some honed finish (i mean the fine scratches like in a cylinder to keep an oil film) it will last a lot longer, not only the plates, but also the rotors.
Love the work and detail, keep it up!👌
In addition to those above suggestions, I would also like to suggest WPC treatment.
Once the galling starts, its going to run away. Surface treatments like you say will work, but it may be simpler (and more robust) for him machine up some iron running surface inserts like Billet Pro do on their plates. What would be cool, would be to re-make all the plates and housings with a water jacket.
Hard anodizing keeps dimensions fairly even while providing a good oil retention, hardness and wear resistance.
he could do chrome plating
@Robert Slackware probably, I just know that Eugene Stoner intended for the m16 to have chrome plating for its slick and hard wear resistant surface finish, VW are doing the same thing for brake rotors now as it doesn't poduce any brake dust because the pads can't chew through the chromed surface finish
"what do we do now?"
add the last 2 missing rotors :P
Probably too hard to machine, at least to the tolerances he probably needs
Oh Yeah! Your my man👍je really has to do it
Isn't that just beautiful!! What amazing work you do. The precision.
That engine would be fantastic on a rc aircraft.
this is a really badass channel. you are one hell of a machinist.
Amazing it just gets better and better on a side note I would buy one of the tapping jigs you have it looks awesome with your logo etched on it
How could anyone ever press unlike?? This is mesmerizing!
because 50% of this video is filler, wasting someone's time is annoying
WoW ! Very nice detailed work !
Very impressive, I would love to see the evolution of this georgeous little engine.
This thing sounds insane !!! Cant wait to see more.
nice, I love how it looks and sounds, I would like the see you harden the existing one and also make a hardened steel one and compare the results, check the rockwell scale of each
People like you blow my mind. So talented such good craftsmanship. Your work is beautiful in truly impressed if you can’t tell. 😄
I'm a trained machinist, and while I worked as a toolmaker we hardened every tool (mold) that I made. This was molds for injection moulding (plastic) and they were hardened when the machining was done. I wasn't directly involved in the hardening process, but as far as I remember the technique was to heat and then cool the molds fast for a very short time. This was done to only harden the surface of the mold, but keep the core soft. This way we got a hard and durable surface while the core was soft enough to not break/crack by the enormous force the molds were subjected to during the moulding. As far as I remember we didn't have to calculate any shrinkage of the steel the hardening because it was only the surface that was hardened. We had to calculate for the shrinkage of the plastic, but I don't think shrinkage of the steel was a factor. I can't remember what kind of steel we used, but it was quite soft and easy to machine before it was hardened. I would recommend you to buy steel intended for making molds and find a description of the hardening process online.
It's 25 years since I worked as a toolmaker now so I have forgot a lot of the details, but I have a friend who works as a toolmaker and if you want me to I can ask him for advice about the type of steel they are using as well as the hardening process.
Never clicked that fast on a new video before
This isn't a kit? You builded only yourself? That is amazing.
using parts from two single rotor engines.
Only parts he didn't machine himself are the housings, carbies and rotors. Irons, front cover, back cover, E-shaft, etc were done by him.
Amazing!!
Awesome bro, congrats on these. CAN'T WAIT FOR YOUR 3 ROTOR!!!!!
Well i'm having a good christmas so far, this week, not only have I had this satisfying machining video but i've had one form ThisOldTony and Clickspring. So much goodness
Φοβερή δουλειά...Μπράβο σου...👍👍👍
Εάν απαντήσει ο johnnyq στα ελληνικά θα εκπλαγώ.
Those tiny apex seals 😍
The internal wear was looking great! Nice an symmetrical. Great job!
日本語で失礼します。
なんだかもうすごい技術で惚れ惚れさせていただいきました！
昔にRX-8に乗っていましたがとてもいいワクワクするエンジンでした！
この技術は後世に受け継がれるべき技術ですね！
次回の動画もお待ちしております！
The jealousy I’m feeling right now
And im sitting here with 2 rotarys too contemplating if i could do it aswell. Tho i dont have a lathe nor a cnc... Yet
@@LuxGamer16 you should sell me one lmao, I want one sooooo bad
@@LuxGamer16 make it happen
oh yes, they drink fuel like it's going out of fashion! I had one once.
great effort, sounds fantastic but like you state 'it needs a flywheel'
I'm not a scientician but I can't help but think that the vapor being blown out of the exhaust probably has a lot of fuel in it. As is tradition 😋.
@@spiralout112 These engines run on a high oil content so smoke lots.
they smell lovely
Retired Engineer after 37 years opinion. The CK45 is ANSI 1045, or Cold Roll and makes a good shaft, if it runs straight and in balance, the eccentric changes the weight factor or centrifugal shift of the shaft. Make the shaft out of 4140. And turn the jets on the intakes down. That has to be fuel exhausting. But a kick ass motor for sure. Great job.
Mesmerizing to watch. All the skills plus all the toys.
Never clicked this fast in my life
You should put this in an Rx7
He should test out a new hardened eccentric shaft, and then double it up to a 4-rotor to show Rob Dahm what's what!
@@zadtheinhaler Or give it two 4-rotors and connect the output shafts to one to get a V8 rotary engine!!!
@@schwuzi That would be insane lmao
And would also probably be the size of a lawn mower engine xD
@@Dubz0408 The biggest challenge would be to synchronise both engines to run the exact same rpm. I think you would need something like a centrifugal clutch on each engine to allow for some slippage
@@schwuzi Hed probably just run them off an idler gear side by side like hes done before with nitro 2strokes
Just think you and your tiny tools are just great content. Thanks, JohnnyQ90.
Such exceptional work, thank you for sharing it with us all
Rob Dahm: I would like to borrow this just to see if this can start my Rotary Corvette
Can you imagine if he some how fits this into an rc, 100% need a rocketbunny rx7 :o
*HELL YEAH BROTHER!*
Impressed, A for effort, especially filing radii! Great work!
This was a pretty damn fun to watch project through til the finished product. Reminds me of when I was younger doing this type of stuff.
Nice job! I love how it is even true to the original motor....thirsty. LOL
This is just amazing...... speechless 😶
That engines built very well for it to be running like this on a first start without the inertia of a flywheel I'm impressed incredible build
Great work and production. Merry Christmas to you!
Need to see that engine in a RC model of Rob Dahm 4WD RX 7.
Anyone with me?
he is two rotarys short an also needs turbo first ;)
@@GoogleyGaz o he can just swap a corvette 😂
Btw in mm how is the dimension of an RC version of a 106mm Garrett turbo?😂
I'm so high I thought my phone was vibrating off the table when he started it 😅
Best craftmanship ever
Incredible! Quite an engineering and machining accomplishment!
Should harden the current parts then eventually put it into some kind of rc.
A model rx7
Hey he has 43 likes but no views how’s that possible.
Anyway
Love to see you videos they are awesome.
Looks and sounds phenomenal. Great job.
Awesome video and quality machining well done
Extra boost with SC😁
Love your stuff! Also, just pointing out that if you had a third rotor it would be self balancing and not necessarily need a flywheel... Keep up the awesome projects!
This is absolutely amazing what you can do you are so talented bro
a beautiful work of art. Sounds great!
Damn that engine was thirsty alright!
You could see the fuel level going down!
I would recomment using 1.2379 (X155CrVMo12-1) for the shaft and try to harden it by induction heating. should be a rather cheap but durable steel for this
Wanted to write 100% the same.
Should be a good and fairly cheap way to do what you want.
If you want to have extra strong surface, you could add some DLC coating..
Depending on expected torque, you could leave the center quite tough and the outside high hard by induction hardening + maybe good dry running with a coating.
@@marcels.647 i haven't seen any measurements for the shaft diameter but i think it is beefy enough to withstand the low rotary torque. he should only harden the contact surfaces though and not all the way to the core of the whole shaft. i hope he sees this or already knows about this since induciton is pretty much the only solution to precisely heat up such a small area. for the coating part i dont know of any good diy solutions that are worth doing at home.
very nice work. cool project!
This is straight-up amazing.
Лайк 👍
*Rob Dahm has entered the chat*
I am so impressed. Amazing job !!!
unreal the work you do.. Such talent..
Having trouble looking for this rotory motor...where can I get this. Everytime I ask someone I get no response
He made it himself
@@omeharto288 you can buy them, they are made by O.S. but they are expensive.
@@leemilica ah my bad
E
E
E
Cool
E
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This is just impressive thanks for the hard work.
Amazing,
Well done.
Wishing the whole wide world seasonal greetings.
From,
Brighton,
Great Britain
I know he's leaving them alone, but I want to liquid cool the plates so fucking bad.
I want to see that engine in a rc jeep
Excellent work 👍
love this content, will do a binge watch of it soon.