RC V4 Car Full Brake Disc System Test! 

It's great you show mistakes, second attempts and rethinking. Keeps it real, no one gets everything right first go.

Can't wait to see you properly stress test those brakes when you get to go out! Amazing build.

Clear roads. Would think this would be the PERFECT time to test it out.

I'm 67. I remember slot car tracks in the '60s. This is all beyond my comprehension. The advance of these things is amazing and the devotion to this "hobby" is incredible as is your talents & visions. OUTSTANDING STUFF! R/Cs w/ nitro V-blocks? Crazy! I love it!

The sound the car makes is just music to my ears

this has to be one of the best looking 1/10th (i think) rc cars on the internet

One of the best RC car "DIY" i've never see... Respect from France

Consider running each axle's brakes through a balance bar so a given pull results on equal force even with subtle differences in length/freeplay in the cable. Also consider splitting front rear with another balance bar both for the same reason, and adjustable so you can tailor the front-rear brake balance and avoid it being tail happy under brakes or slowing too slowly with insufficient rear. I can't believe I'm giving brake setup advice to a model maker! Nice job though! I need to find your engine build and see how she runs. :-)

Tip for the brake servo: Use a shorter lever. At a given torque, shorter lever means more force at the end of the lever.

Johnny Q90 in 2021: And this is how you implement A/C on an RC car.

Simply this is what I call "state of art" hand made awesomeness. I've always wanted to do this. All the best. 😊👍👍👍

You must feel a great sense of satisfaction in designing and fabricating the various components, I know I would. It is quite marvelous just to be able to see you in action, your engineering skills are a joy to watch.

“I was hoping this would happen so I could remake an all aluminum one” 😂 love this series and the car

One of the best channels on RU-vid for sure. The content you make in this genre is 2nd to none.

Nice build! Love the brakes! 👍🏼

This is one of the coolest RC videos on RU-vid. I love all the fabrication, testing, and re-dos. Very well done. Thank you.

You are a phenomenally talented craftsman! Love the way you creatively come up with ways to solve your problems, going to look through your videos to see where you got your tools so I can do some of the stuff you do at a much much lower level lol. Keep up the great work!

This has been one of the most satisfying builds I have ever followed. Loving the way its unfolding.

This has to be the greatest and craziest R/C car build ever. I have been following this build from the beginning. Fantastic work!

That's brilliant. Awesome engineering and way too dedication towards the entire build. Cant wait to see in on the open road with full throttle and drift.

This really makes me want to see two servos for the brakes for bias adjustment and perhaps burnouts? But that would likely require stronger wheels... Milled wheels. Either way this build (and channel, and YOU) is a very inspiring thing. Keep up the awesome work!

Dude!!! Am so stoked to finally see it driving around I've been following the build since you got the motor and began modding. Great work!!!

That thing is just so awesome , love how you can even somewhat make out that distinct V4 sound and all. Keep up to good work 👍🏻

I bought the same 25kg servo motors from BG for turning the front and rear wheels. They are cheap and I am extremely satisfied. The crawler turns without a problem. Thanks for the video, which is realistic and instructive.

Johnny YOU KNOW... That once that this prototype will be conpletly successfull you will have to make a V6 engine XD i love your videos and your hard work, keep it up!

This is so relaxing and inspiring, love your vids. Im always like "Oh mannn, can't wait to see the next video"

it runs so nice you can clearly see how fast it go if you give it some road to run at, the engine sound is so pleasing to hear

It is an absolute JOY to watch these videos!

The patience and technical ingenuity this guy has. He has got to be German.

My friend, you have evolved a lot, congratulations! Your videos always have news. Leandro Wagner.

Very proper and exciting to see someone actually putting this motor to a performance build. Keep up the great work 💪

i use to dream of this as a child. im glad someone built it. you have my admiration.

Magnificent job as usual, love them brakes. This is the rc car I always dreamed of, a true miniature car.

Cheers Johnny, it’s my birthday today so you couldn’t have timed this any better!

The ability to a do burnout by just locking up the front brakes would be sick

Woah!! Mind blowing.. don't know what's better, the rc car or watching the process!! 🔥

This thing sounds like a baby Aprilia, and I love it.

Literally amazing! Functioning disc brakes on a RC, I want this myself haha

Since I found your channel I've got addicted, I'm an inventor myself and you made me order a miling machine like yours, and a 3d printer too, so much potential. Thank you for the videos, they are well made and you also show your miss designs and solutions. Big hug from Portugal

You are an excellent example of 'Applying' science. Hats off man..

4:40 "I will press a fitting to this part" "But first we need to make it" Literally muttered, "What a badass". So sincerely cool.

Never cease to amaze me Johnny!!! ✊😬👍

This guy is brilliant. What an awesome engineer.

Acompanhado este projeto aqui do Brasil, parabéns pois está ficando muito bom!

Just SOO IMPRESSED, I Love the engineering part problem solving until this are smooth ,you are VERY TALENTED now make a full sized 1 and beat the crap out of Ferrari best wishes SCOOBS UK.

I'd say lockdown must be pretty fun for you with those building skills.!

Dude i just discovered your channel and i can't wait for this lockdown thing to end to see your project running. Awesome job man.

I discovered your channel with the variable fan shroud video. It was so well done I went to see what other stuff you have created. I was not disappointed. What you make is amazing and the quality and detail is incredible. Really reminds me of Click Spring's videos, you two are real craftsmen. 100% earned my subscription.

Omg this is soo cool the sound makes me smile🤩🔥 Would love to try this out IRL but for now need to proceed making content in Forza 4 he he

I love your tapping jig 😍 seeing other YTers tap with a cordless drill hurts my soul 😭

Metal fabrication at another level . Damn good work .

That is amazing detail. Makes you appreciate the built-in braking of a quality brushless electric motors these days.

Waited almost a decade for this video 😁🤣

I love watching you put this together. I'm curious as to how well the front bearing/steering bracket will hold up to the stress from the breaks.

Wow I absolutely love this- I can’t wait to get ahold of a 3d printer as such and get to work- good job!!!

I'm not sure how much of that car you made or bought, but you have an amazing car and the brake system that you made is awesome. Nothing I ever try to make turns out so well, but I just got my first RC transmitter and receiver for my first real electric RC car build, and I just tested out the steering and I was blown away how precise an responsive it is. I finally built something that I am proud of. I cannot believe how well it turned out. I used 16 bearings on the front 2 wheels, suspension, and steering mechanisms. The key to it was to use bearings everywhere, and never try to lever anything on a bearing. Put support on both sides of all bearings so there is no leverage against the bearing itself. For example, for the steering, I had to make a box like mechanism that had bearings on both sides. It is too hard to describe in text, but it turned out really nice and solid and precise. It is hard for me to believe that I built it. The other key for me was to get a real RC transmitter and reciever and ditch the NRF24L01 modules. I got them working once on an RC boat, but I had to use real Arduino Mega's (or real Uno's), and not the Chinese copies that do not supply enough amperage on the 5v out pins.

Perhaps change it to hydraulic breaks and separate them so you have the choice of locking the front wheels to do a burnout

I like how theme of this build has been "buy premade parts and then re machine them."

Amazing work and machines. I love how extreemly real it is. Love the build

Cara com certeza vc veio de outro planeta, você é muito inteligente...parabéns...

Would LOVE to see some burnouts... disconnecting rear brakes for example to help...I'm pretty sure I speak for a lot of people. Great skills my dude!

When my daughter's ask why I'm being so Extra I think of this project. That's not a bad thing!

Love how this creation is coming along sounds great looks great and I'm a very mechanical minded person myself so seeing creations out there like this one is very inspiring to me keep up the good work I'm sure there's lots more u will find to improve on

It's just a delight watching you work with all does details. ^^

3:50 Left: Pineapple slices Right: Aperture Science

My reaction to first 10 seconds: OMG IT STOPPED AND NO ONE DIED

Johnny, this channel is one of the best things on RU-vid. Thank you

Stunning engineering. Congratulations on the build.

Hey awesome project. you could also add a dynamo, then you could install a much smaller battery and get even closer to the real thing.

When will the turbo be ready for it?😉

You are one smart dude and with the skill of interest. Bravo.

is there no end to this guys talent.....PURE GENIUS !!!!!!!!!!!

With your tools and skills, surely hydraulic brakes would be just as easy to make and use a lot less force.

Thumbnail:IT RUNS! Me: ITS STOPS! I dont know what im doing to my life

Sometimes I loosing or brooken my rc part when I try to repair, I realy hate this situation n won't finish yet, needs a lot of time to order .. etc... But that all my problem not for this guy, he just eazier made almost any part with great skills and tools. You are Amazing!

Now you have to maintain the rc car like the actual car. I love your videos! Keep on doing it❤️

We get out of this "situation" when people say they have had enough of this crap

Those brakes are unreal and the way you made it all work is incredible. The only thing I wished that you would have done is use a bigger chassis like a 1/5th scale or something. I bet a 1/5th scale F1 car with all gear would be just out of this world! Can't wait to see this project come to a conclusion.

It's cool you share the stuff you dig man.

You do amazing work. The machining is incredible. Perfection for sure!👍🏻

That so cool I shared this video with all my friends can't wait for the test drive

a long struggle to make this rc, keep the spirit🔥🔥🔥

Love the 3d printed wheels. They turned out great!

Wow 👏 I've never seen a micro machine shop before. Good stuff 👍

Man... This is so amazing! Thank you very much for sharing your. I loved it! So detailed. Can't wait for the finish project to run. Keep it up sir.

Bro you'll legit best channel on RU-vid for not adding music yo your vds 🙌 respect on that

your commitment and patience is incredible. (im a machinist, big thumbs up dude)

I like your videos! Most youtubers would spend more of their time taking instead of actually showing what they are doing but on the other hand instead of talking you just have like a short caption of what you are about to do. Doing this actually makes me focused more in the car. Keep up the awesome videos!

Love the sound of the engine not too noisy soft and smooth

Great job! Can't wait to see the finally! Although I feel like you will never stop modifying it! XD

This is the coolest thing I’ve seen in a long time.

Good job! The best part of this video is the way you are searching and evolving each time. Very cool!

I remember I had a rc I built I hated after you would let off the throttle it would cost .mucho respect for you Jonny on the disc brakes looking forward to seeing more action

Συγχαρητήρια για τις φοβερές κατασκευές σου!!

impressive craftsmanship

Can’t wait to see the final results

Insane craftsmanship

This is my favorite series right now

These videos are just amazing.You got mad skills and that pocket mill kicks so much ass.

It is nice to see iterations on your designs!