Johnny, you should mill out some 1 piece rotors for that blower and open up the ports so it actually flows air.

@technicbuilder6410

Ай бұрын

And if he gave them some twist they would probably be smoother.

@1one3_Racing

Ай бұрын

There's a reason nobody does forced induction on RC engines. It doesn't work.

@yoda3549

Ай бұрын

real screw/roots blowers have Teflon strips to help seal. i dont know if he could do that too.

@everettstormy

Ай бұрын

​@@1one3_Racing rc airplaned have been using superchargers for a long time lol

@1one3_Racing

Ай бұрын

@@everettstormy is this an aeroplane?

The sound never gets old, and hearing it on a moving chassis outside is just fricken amazing

I have dreamed of seeing a V8 RC car since I was like six thank you for making this I couldn’t stop smiling

You need to ensure the fuel tank remains pressurised by feeding exhaust pressure into it. this way, fuel is always forced into the engine.

@GeomancerHT

Ай бұрын

Very nice way to blow things up.

@kynghype9715

Ай бұрын

@@GeomancerHT Thats how nitro engines work, do your research lol

@tm5123

Ай бұрын

@@GeomancerHT All RC nitro engines do this, pretty much.

@mattinwinkymg

Ай бұрын

​@kynghype9715 Geomancer probably thinks EGR valves are a good thing too 😂😂

@kleetus92

Ай бұрын

@@mattinwinkymg Lol... oddly enough I got into an argument with someone about that and PCV systems too!

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.

@andruwmartinez4129

Ай бұрын

I'm sure this has a one way bearing preventing that issue

@chevyman5618

Ай бұрын

@@andruwmartinez4129it stalled In the beginning of the video when he engaged the clutch then had to give it gas to take off running

@rsquared9703

Ай бұрын

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.

@danw1955

Ай бұрын

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.

@jimsimone2651

Ай бұрын

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?

A heavier flywheel may help with the shutoff problem.

@fra5724

Ай бұрын

Why??

@goosebox9064

Ай бұрын

@@fra5724more inertia, but the problem there is it wouldn’t be as rev happy. It should still rev plenty though because it’s a

@fra5724

Ай бұрын

@@goosebox9064 ty

@someonesomewhere_777

Ай бұрын

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.

@Kettletrigger

Ай бұрын

@@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!

@HolloMatlala1

Ай бұрын

I am a here as well....Count me in on this comment

@mickgibson370

Ай бұрын

I myself! I had raced Car, Motorcycle, and RC!

@htothec1

Ай бұрын

100% agreed. This man has the best channel on KZread. 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

@CptDallas

Ай бұрын

Review how gas RC PLANES do it. They go inverted and still have power.

@FSShenanigans

Ай бұрын

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!

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.

@OhHeyItsBilly

Ай бұрын

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.

@johnkilo3

Ай бұрын

@@OhHeyItsBilly I don't mind if he's sponsored either, but you're supposed to disclose it.

@Man94824

Ай бұрын

bit rude i do say

@ThatOneGuyWithTheEye

Ай бұрын

You can literally buy a real roadworthy car with a real motor for that price. Most of mine have cost less

@robbosrc

27 күн бұрын

I know right here I’m Australia it’ll cost me about 2.5k for just the engine

Φίλε Έλληνας είσαι σε βλέπω τόσο καιρό και δεν με πήγε ο νους ότι είναι Έλληνας. Μπράβο ρε φίλε συγχαρητήρια, τέλεια βιντεάκια

@panosbosst4176

Ай бұрын

Φίλε και εγώ έπαθα πλάκα τον βλαιπω πάνω από 2 χρόνια και δεν μου είχε περάσει ποτέ από το μυαλό 😮

@user-rp8zv8nl6n

Ай бұрын

Ναι ισχύει παιδιά ο τύπος είναι πολύ μυαλό!

I’ve been watching since you got the V8 and I’m stoked to see it driving and skidding around bro, well done 🙏

make it loud

@mrtambourineman6107

17 күн бұрын

He should learn to drive it first!

@ValerianHD

17 күн бұрын

@@mrtambourineman6107 no, make it loud first

This thing is so dang cool! Thanks for sticking with it and continuing to share!

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.

Best v8 rc ive seen running an driving so far on KZread....❤

Great test drive! It sounds so good! Thanks for sharing JQ90!

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'm just impressed with how well it starts, I've seen lots of others struggle with these.

Just get the four- stroke sound is amazing. Phenomenal piece of engineering all around!!

That rc has 4 more cylinders than my Subaru 💀

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

@tuna3461

Ай бұрын

How loud is it? Is it painfully loud like a typical nitro engine?

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.

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 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

This dude and these builds inspire me to go learn how to do stuff. So freaking cool. Thanks for documenting this for us, Johnny!

That's absolutely epic!!! Great job man!!🙌🏻👏🏻

very exciting V8 sound! great work!

This guy is smart and clever to figure it out, he knows his car well. Dude built it from scratch

Johnny, on nitro engines, we have to apply pressure to the fuel tank via a line from the exhaust. The impulses form the exhaust muffler pressurize the fuel tank.This will keep fuel flowing to the carbs and prevent leaning out due to fuel slosh.

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!

I bet that felt great getting it out for a spin congrats bud awsome work

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!

Very impressive setup. It's hard to believe a V8 could be so small and well deigned. It looked so cool drifting and spinning tires. 👍🏁🏆

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!!

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.

The scoring on the inside of the supercharger housing looked like it was towards the center, so the rods holding the rotors might be bowing from a slight imbalance when they spin fast enough. Someone mentioned one-piece rotors, so that might help a rigidity issue. If that's what's actually happening.

Amazing ! Superb ! Congratulations !

I think a 7.5cc nitro engine 1 cilinder wil outperform all those toyan engines. Sad but treu. I still love it that you try making them work!!😍

glad to see it finally roam free on the ground! all that work!

That clicking sound made EVERY car guy wince. Anytime something mechanical makes that noise it's normally not a good thing.

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.

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 KZread. It starts, the throttle is responsive and its fast enough to warrant the effort.

Thank you good sir for making our dreams come true! 🙏🙏🙏 A V8 RC... 😍 What a great set if skills you have!

What a sweet ride - love the sound

This is the best thing on KZread.

Sick! Love seeing them drive and operate

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.

Dude these videos are so friggin' cool.

This thing is so sick, can’t wait to see the final version

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.

Very Cool!!! Such a unique sound for an rc!

Δεν περίμενα ότι θα έβλεπα τέτοιο διαμαντάκι στην πόλη μου! Πολλά συγχαρητήρια!

@lolbots

27 күн бұрын

what's your city?

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.

@alienrace

Ай бұрын

Agreed. I still think a centrifugal clutch like a typical nitro car would be the best option.

@perwestermark8920

Ай бұрын

@@alienrace Yes, having automatic clutch slip at low rpm makes life easier.

im excited to see you make alloy rims next ep!

Круто получилось, осталось только корпус подобрать и будет пушка 👍

A felt or ceramic fuel clunk may help if fuel is aerating or sloshing air causing it to die.

Johnny is an engineering genius!

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!

This thing's gonna burn some rubber 🔥🔥🔥

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.👍🏻

Excellent stuff! I think you might benefit from a baffle or two (or foam) in your fuel tank.

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.

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!

You could fill the gas tank with race foam it prevents the fuel from sloshing around

I would love to see new rotors for the supercharger!! There's so many videos out there with little superchargers and turbochargers for micro engines like this and none of them ever work. it's so sad I want to see one that works. you can do it!!

Μπράβο φίλε , Πάχη Συνέχισε έτσι, Και πάλι μπράβο 👍🇬🇷

I can't wait to hear it tuned!

CONGRATS 🎉👏🏆

Sounds awesome !

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.

It sounds awesome!

NICE DRIVE SHAFT, TRANNY 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.

How did Toyan manage to make a v8 that doesn't sound like a v8? Impressive. The Conley sounds exactly like a full scale v8.

Wonderful progress Johnny sounds like a nascar

Really freaking awesome!

This thing sounds good!

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.

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.

2:09 keep in mind that adding a supercharger for more power doesn’t mean the RPM will go up. The engine should rev to the same RPM but have more available torque across all RPM thus also improving horsepower levels. Unless you tune it or remove a governor it won’t show a higher wheel speed. I’ve been watching for a while and you seem like you know what you’re doing, but just something to keep in mind^

It’s getting faster and more responsive 👍

The comment about the tank needing to be pressurized is correct. They flow a lot of fuel at WOT, and the diaphragm pumps in the carbs can't keep up with it unless you have some tank pressure. You might look into sintered bronze for your clutch basket. The hotter it gets, the better it works. You may need a bit stronger return spring though.. Other than that, pretty good run for the 'first' time out!!😄👍👍

It has a very realistic, very scale look to it's speed, power and stance.

That is absolutely awesome😮

Rotors misaligned as you pointed out 1:10. They are 5mm holes in those rotors, get yourself 6 lightweight dowels of equal length and loctite into those holes.

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

So sick to see a model engine turn into a working moving vehicle

That thing sounds so mean. Love it

It sounds cool as hell 🤙🏽

About time! Make it run alrwady

So awesome to see it driving...

sounds sooo good!

Great video!

The sound is brutal

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.

Dude, ya got this!!! 🤘😎

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>

Ein Geiles teil, super Arbeit .