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Johnny, you should mill out some 1 piece rotors for that blower and open up the ports so it actually flows air.
And if he gave them some twist they would probably be smoother.
There's a reason nobody does forced induction on RC engines. It doesn't work.
real screw/roots blowers have Teflon strips to help seal. i dont know if he could do that too.
@@1one3_Racing rc airplaned have been using superchargers for a long time lol
@@everettstormy is this an aeroplane?
The sound never gets old, and hearing it on a moving chassis outside is just fricken amazing
It stalls sideways because the wheels have stopped turning ! It’s lost its forward momentum, at low rpm you have practically no torque available from the motor, it’s not a diesel engine & you have a huge flat spot in the power.
I'm sure this has a one way bearing preventing that issue
@@andruwmartinez4129it stalled In the beginning of the video when he engaged the clutch then had to give it gas to take off running
It’s a traditional manual transmission. When the clutch is engaged you can’t just stop. I know he put that Revo transmission in but that doesn’t change the direct drive nature of the setup.
No, the carbs are losing their prime because there's no tank pressure. The diaphragm pumps on the carbs depend on intake pulses to function, and at high rpm the pulses are too close together to provide sufficient volume. That's why you have run a line from the muffler to pressurize the tank. This is done on a lot of RC planes as well for the same reason.
For curiosity sake since I'm not a mechanic or engineer or mechanically incline... would a check valve "back flow preventor" work similar to plumbing applications?
You need to ensure the fuel tank remains pressurised by feeding exhaust pressure into it. this way, fuel is always forced into the engine.
Very nice way to blow things up.
@@GeomancerHT Thats how nitro engines work, do your research lol
@@GeomancerHT All RC nitro engines do this, pretty much.
@kynghype9715 Geomancer probably thinks EGR valves are a good thing too 😂😂
@@mattinwinkymg Lol... oddly enough I got into an argument with someone about that and PCV systems too!
I have dreamed of seeing a V8 RC car since I was like six thank you for making this I couldn’t stop smiling
A heavier flywheel may help with the shutoff problem.
Why??
@@fra5724more inertia, but the problem there is it wouldn’t be as rev happy. It should still rev plenty though because it’s a
@@goosebox9064 ty
It would actually reduce the engine RPM; plus he's already burning out clutches on the flywheel he has, so this might not be a good idea. The comments above about pressurizing the fuel tank with the exhaust is probably an easier solution and won't require any additional modification. Seems to me like the system is losing fuel flow to the dual carb setup in a tilted position which is very indicative of low fuel pressure.
@@someonesomewhere_777 A heavier flywheel will not reduce engine RPM. It WILL slow engine response due to more inertia, which is why a lightened flywheel is a common performance modification. The downside to a light flywheel is a tendency for the engine to lose RPM quickly...sometimes so quickly that it dies. Which is what might be happening here. Slowing engine response will not hurt the clutch. If anything, it will increase clutch life due to more gradual changes in RPM. Johnny has a lathe and a mill - adding weight to the flywheel shouldn't be a big deal (if that in fact is the problem).
The effort and determination of this guy is insane. Every time I see one of your video's in my for you page I don't even hesitate to click on them. I am proud to be one of your 1.87M subscribers!
I am a here as well....Count me in on this comment
I myself! I had raced Car, Motorcycle, and RC!
100% agreed. This man has the best channel on KZhead. One hell of a smart man
If you think it’s fuel sloshing make baffles in the tank to reduce the liquid movement. And also the low rpm if you throw the drift tire with a plastic sleeve you can draw your conclusion of fuel loss and or rpm being to low
Review how gas RC PLANES do it. They go inverted and still have power.
Full size car our fuel cell has foam in it to prevent sloshing may be easier than making baffles
That is becoming some serious automotive design, i mean that colling and exhaust, you grow my man!
I’ve been watching since you got the V8 and I’m stoked to see it driving and skidding around bro, well done 🙏
Best v8 rc ive seen running an driving so far on KZhead....❤
This thing is so dang cool! Thanks for sticking with it and continuing to share!
Great test drive! It sounds so good! Thanks for sharing JQ90!
At first I was worried JohnnyQ90 wasn't devulging that he is sponsored by Toyan or Sterling Kit, and that he actually gets all these engines for free. You're supposed to let people know if you're sponsored. To be honest, though, I think these videos have made me want these small engines less and less the more of them I see. Imagine spending $1700 on this "supercharged" V8, plus everything else needed to get it to run (and even more if in an RC chassis), and the thing just breaks almost immediately because of terrible manufacturing and tolerances. I'll stick with enjoying watching someone else spend tons of money on getting them to work right.
I don't mind he's sponsored or not. I love the creative process in his videos. I think he does a great job. I love watching all of the unique machining parts and 3D printed parts. Those engines seem on the surface really awesome but I can tell they break catastrophically really easy, the tolerances in the machining process are probably not good at all even though it "looks" good. Being sold extra attachments like superchargers that actually hinder and hurt the motor instead of actually giving more power. You would have to have a bunch of expendable income and enjoy this as a hobby because these motors seem like they're really low quality and horribly made and unreliable.
@@OhHeyItsBilly I don't mind if he's sponsored either, but you're supposed to disclose it.
bit rude i do say
You can literally buy a real roadworthy car with a real motor for that price. Most of mine have cost less
I know right here I’m Australia it’ll cost me about 2.5k for just the engine
That rc has 4 more cylinders than my Subaru 💀
make it loud
He should learn to drive it first!
@@mrtambourineman6107 no, make it loud first
I'm just impressed with how well it starts, I've seen lots of others struggle with these.
This dude and these builds inspire me to go learn how to do stuff. So freaking cool. Thanks for documenting this for us, Johnny!
its been more than 2 years followed you and i'v seen this little thing grew and now its 90% finished i am so proud of you. gg and continue let's go to the 2mill
I bet that felt great getting it out for a spin congrats bud awsome work
I bet youre so happy to see it coming together. I know your viewers are. Way cooler than normal RC cars nitro or battery. Well done.
Awesome video as always, Sir. Long time subscriber. As an American, I always love seeing a fire breathing V8, in any form. I hope you can get the blower figured out. Keep up the great work Mr. Q90!
That's absolutely epic!!! Great job man!!🙌🏻👏🏻
very exciting V8 sound! great work!
Just get the four- stroke sound is amazing. Phenomenal piece of engineering all around!!
U could cut a two slots into the metal, to maintain balance of the clutch and into the friction material, and use two dowel pins plus a lil glue to keep it from delaminating!! Just a thought!! Keep it up, love the Vidz!!!!
I will like to shrink myself so I could drive it. Dispite the repairs it needs I still find it perfect and awesome. Great work Johnny.
I've been waiting for this video for so long and I'm glad it's finally here. But also I can see it needs some refinements in the power band, especially in the low rpm, knowing your potential it would be amazing to see you make turbos like you did for the twin cylinder 4-stroke, but have two different sized turbos and connect them in a compound setup so that way you can get the most torque down low and horsepower up high.
So exciting to see that beast off the chain and thrashing about! Just like any scratch built DIY project, things are going to happen. I have 100% faith that you will work out the bugs. Looking forward to the next update!!
Amazing ! Superb ! Congratulations !
Sick! Love seeing them drive and operate
i think part of the reason it stalls when u slide is causee the engine just doesent have enough energy to keep going when the wheels slow down after a slide. real cars do the same if u spin and dont disengage the cluch
What a sweet ride - love the sound
Φίλε Έλληνας είσαι σε βλέπω τόσο καιρό και δεν με πήγε ο νους ότι είναι Έλληνας. Μπράβο ρε φίλε συγχαρητήρια, τέλεια βιντεάκια
Φίλε και εγώ έπαθα πλάκα τον βλαιπω πάνω από 2 χρόνια και δεν μου είχε περάσει ποτέ από το μυαλό 😮
Ναι ισχύει παιδιά ο τύπος είναι πολύ μυαλό!
It seems like there is a lot of hope for this project to actually come all the way through. Looking great so far and I can see it getting the last 25 percent improvement and then it probably will be the best rc car of its type on KZhead. It starts, the throttle is responsive and its fast enough to warrant the effort.
Johnny is an engineering genius!
glad to see it finally roam free on the ground! all that work!
creating a body for the car once it is mechanically sound would be so cool! , it would literally be a mini car! , great vid once again!
Dude these videos are so friggin' cool.
Thank you good sir for making our dreams come true! 🙏🙏🙏 A V8 RC... 😍 What a great set if skills you have!
Very Cool!!! Such a unique sound for an rc!
This thing is so sick, can’t wait to see the final version
CONGRATS 🎉👏🏆
Δεν περίμενα ότι θα έβλεπα τέτοιο διαμαντάκι στην πόλη μου! Πολλά συγχαρητήρια!
what's your city?
im excited to see you make alloy rims next ep!
That sounds awesome dude holy fuck. This is like the next level in realism. Hearing it pass you even at those low speeds is insane
How loud is it? Is it painfully loud like a typical nitro engine?
Sounds awesome !
I can't wait to hear it tuned!
Μπράβο φίλε , Πάχη Συνέχισε έτσι, Και πάλι μπράβο 👍🇬🇷
It sounds awesome!
This thing's gonna burn some rubber 🔥🔥🔥
Ein Geiles teil, super Arbeit .
I can only imagine how long it took you from concept, to making this video of it driving. R&D is an unimaginably arduous task of success & failure, until you get to the point of consistant successive runs of pure V8 stomping runs of smiling, until your face hurts. Some people think making these "toys" is a waste of an adult's time, energy & resources. What low brain wattage floofs don't understand is, this is the very type of activity which gives some of us a reason to wake up on the weekend mornings. Never stop researching, developing, assembling, testing, & succeeding!
Sweet! So glad you're at the testing phase. I've been watching the build process and am REALLY IMPRESSED! I don't know if anyone has mentioned it yet or I may grant forgotten if you already thought about this, but have you implemented some runaway protection? You know, how to make the car stop if it loses contact with the radio while under full throttle. Always an issue with nitro RC cars.
It sounds cool as hell 🤙🏽
Wonderful progress Johnny sounds like a nascar
Excellent stuff! I think you might benefit from a baffle or two (or foam) in your fuel tank.
Fantastic model !!! Can’t wait to see it with the supercharger working and a flat out run for top speed. Not much into drifting and burning up the tires. Would love to have one of these, first one I’ve seen with the actual engine being used in a vehicle.👍🏻
Really freaking awesome!
That is absolutely awesome😮
So awesome to see it driving...
This thing sounds good!
This guy is smart and clever to figure it out, he knows his car well. Dude built it from scratch
My guess is rotor shaft flex and the tolerances of the supercharger synchro gears: -That tri-lobe rotor looks to be a 3D ratio, with 3 segments I doubt it has the rigidity to stay straight under boost. -The synchro gears would need to have insanely tight tolerances and sub tenth backlash to maintain the lobe seal with such small gears/rotors. Even operating with a wet seal design. -If you do decide to make your own rotors, may I suggest a helical tri-lobe.
This thing is cool man!!
sounds sooo good!
The sound is so good
@JohnnyQ90 - just a thought: set up the throttle and clutch actuations on the same servo (or multiple servos from the same channel) - as you give it more throttle, the clutch starts to engage, and as you let off, the clutch disengages. This would take an incredible amount of fine tuning, but I’d imagine would work extremely well, but still provide that realistic functionality you’re looking for.
About time! Make it run alrwady
stalling- could be fuel pickup location on your tank you are using, also can play with the length of the hose from the exhaust to the tank to help keep constant pressure in the tank.
Keep it up johnny your just too cool 👍
The sound is brutal
That thing sounds so mean. Love it
Dude, ya got this!!! 🤘😎
That is so awesome. I absolutely love it. What body do you have for it?
I'd add a baffled fuel cell to the list too, maybe put some foam in there and or make something custom with a baffled swirl pot built into it, the sort of thing you see on drag cars. The sudden direction changes and inertia were visibly causing the fuel to climb up the side of the tank which as the fuel goes down are probably starving the feed line.
thing sounds SOOO good man! Id go to a positive pressure fuel system like nitro cars run normally where it gets some exhaust air to pressurize it
Nice to see it driving :-)
Pulling air bubbles into the fuel line. Add a splitter with 2 inlets inside the tank. Or a piece of fuel filter foam to stop the sloshing.
Great video!
It’s getting faster and more responsive 👍
Would putting pressure from the exhaust to the tank help with the stalling? Kinda like they do or did with the 2 stroke RC engines? Just a thought. I could and probably am way off base though. Either way, still an awesome video and car. Thanks for sharing.
That clicking sound made EVERY car guy wince. Anytime something mechanical makes that noise it's normally not a good thing.
A felt or ceramic fuel clunk may help if fuel is aerating or sloshing air causing it to die.
Badass good work
Also, it shuts off becasue you need a baffle in the tank(possibly even the carburetor bowls). The G forces involved in that turn are preventing fuel from feeding the carb.
Great job
Amazing totally 👍 on board with your drive in making outer perfection on a machine that’s thrills the senses of WOWness in the ability to create kudos to you bro 🎉🎉🎉🙏👍
Then start from control is very important and awesome
I think the stalling is many things at the same time. - low torque at low rpm. You either need to have the clutch slip or do a burnout to maintain enough engine rpm. Your lose all speed forward which forces the wheels to stop. You don't have enough gears in the gearbox to help keep the engine rpm. - add some baffles in the tank - consider some exhaust to add fuel pressure. Great video. But maybe not so great for the supplier of the compressor. It did have issues even before you installed it, being silent in only one direction. They need to step up their manufacturing quality and testing.
Agreed. I still think a centrifugal clutch like a typical nitro car would be the best option.
@@alienrace Yes, having automatic clutch slip at low rpm makes life easier.
It would be interesting to spin the supercharger at operating RPM without the engine, to see how much air it moves. I think these tiny engines are too small for forced induction to work properly. And I think the tolerances are probably just good enough for them to run, I think any substantial level of boost would bend things or just end up being lost as blow by. I'd love to be proven wrong, though. "2 Stroke Stuffing" gets an astounding amount of power out of a 50cc engine, but that's only one cylinder, and it's actually designed for vehicular use.
Excellent!
first time ive ever seen somone actually do work other than idle, great job! looks like a better application would be a monster truck or rock crawler
It has a terrible understeer, the car doesn't want to turn. And if you apply too much power, it immediately oversteers. I suggest you check your differential (if exists) . This issue causes extra load to your engine and clutch while turning. The car came from a long way, and I love how you build it with great effort and create quality content. Keep on, friend across the pond!
This is dope, I like what ur doin!^^ Awesomeness!, thx for the good vid, with NO MUSIC, just true sounds, including tools, very rare today!! \O>
Need a locking slot or slots for the clutch lining or something. Really neat project!
You are awesome!
I agree with a lot of these comments about the stalling issue. I’m leaning towards the idea that was mentioned about the clutch being still engaged while the car comes to a complete stop. That would definitely stall my car at least. That also probably played a roll in the clutch breaking. If it’s a fuel issue though, my suggestion is try a bigger fuel line, and a carb bowl if they don’t already have one. The bigger line will keep it from hydro locking, and the bowl will help with whatever air still gets through. As for the super charger I’m on team solid rotors lol. Those have to be one, solid, smooth piece to get rid of the slap. They have way too much wiggle being three pieces each. In other news; line lock? Totally unnecessary and would probably destroy the transmission but man would it be cool if it worked. Just sitting there roasting the tires and then turning it off and peeling away. As always, love the video. Keep up the awesome work, and I can’t wait for the next one.
Круто получилось, осталось только корпус подобрать и будет пушка 👍
Using the exhaust to pressurize the fuel tank is good. Putting partitions with small holes into the fuel tank might help with stalling when sideways. that way the fuel doesn't slosh around as much.