Worlds Fastest RC Tracked Vehicle

[@ChainsawFPV]

Great effort, except one thing. You built a "half track", and RC Test flight was a full track. They are totally different vehicles and totally different records to beat. RC Test flight still has the record for the "Fastest tracked vehicle". You for the "Fastest half track vehicle".

[@sealevelgg]

that

[@leifray5]

Agreed

[@TidyRC]

Yeah that’s the dude who is actually the worlds fastest.

[@RedlineA2Y145]

🤓

[@zat-1-fury]

I saw the same thing…

[@toolbaggers]

Half-track means you can only get half the record, MAX.

[@mattsimshauser7541]

apples to oranges bud

[@codaman127]

Sorry bro: Half-track vehicle. Half track vehicles benefit from the load bearing on the front wheels, reducing the need for horsepower due to the round shape and extended body length that doesn't need to be supported by a track carriage. While you do have tracks, it's more like you added tracks to an RC truck's back end than it is having built a truely tracked vehicle. But don't let that kill your thunder here! You did an awesome job creating a speedy boy here, but I gotta admit you're not beating a record, and instead just setting a new one. I'd love to see you and RCTestFlight take the collaboration opportunity to each build a fully tracked and half tracked vehicle to truly compete with each of your current vehicles.

[@localsms]

Full track vehicle next video please! Amazing work, can’t wait for the next video.

[@Orion_5764]

I think this is a very cool vehicle and it definitely be a record but not the track vehicle record. You beat the half track record

[@SeabornNomad]

"airplane boy" has quite a lot more experience and talent with everything design and build than you think lol. foamie junkies can do things that'll blow your mind for a percent of the cost of.... well, this. but, i absolutely love the attention to engineering detail, and the way you built this. it looks like it can handle some serious thrashing and still keep speeding along. i've never seen somebody succeed in building a durable dragster :)

[@Undertaker1134Tx]

Made a small RC tank using the same type of chain. made Pla and tpu rectangle pads with screw inserts(only on the pla) to be bolted across the chain. on top of the pla pads glue on the tpu tread. Haven't tried going over 35 yet but they hold great so far.

[@miszkolc6535]

I think I still like rc test flight project better. It's more stable and is proven to work with autopilot and fpv. Still a nice video though!

[@EngineeringAfterHours]

His is definitely more stable and better in snow/sand. My design would be trash in both of those cases. Autopilot and FPV is easy with any RC based setup. I have an autonomous RC car setup in a prior video that would be a direct copy over.

[@taylorhewson8995]

To make an autonomous rc car you need a stable rc vehicle otherwise it won't work and it would just destroy it's self

[@d4ro]

"airplane boy" beats your a$$, so do i. im sure daniels thing can be overclocked too again, but good job dragging up the challenge

[@EngineeringAfterHours]

Prove it!

[@d4ro]

@@EngineeringAfterHours im not into cars at the moment, I tried to make a fast Lego car but it melted the axis

[@Mickocarbomb]

Honetly amazing but test flights is still the record holder. You built a half track my guy, nothing to discredit but its still a half track.

[@DoRC]

Very cool and awesome rig but as others have said that's not a tracked vehicle. That's a half track. Totally different

[@g1nk0]

That chain looks really clever for RC tanks. I'd almost kinda like to see a video about a more traditional tracked vehicle using those.

[@Need_more_free_time]

Following rctestflight tank project for a long time but you gave me a nice winter project. i am going to make a quicker full tracked model :-) and if i have the time a half track model. ;-)

[@EngineeringAfterHours]

Sounds awesome! Hopefully you plan on making a video about it!

[@Dia1Up]

I'm excited to see a back and forth

[@EngineeringAfterHours]

It'll be interesting if he comes back...he should be able to pick up enough speed with just better batteries. I'd launch a new architecture if he comes back.

[@Kinor7]

Awesome video! Congrats on the record! Love your determination and never give up mentality. I'm glad your channel popped up in my recommendations, loving your stuff already. Great production quality dude. Keep at it 🤙

[@EngineeringAfterHours]

Thanks for the kind words! It was definitely frustrating at times in the 100 degree heat, but I'm glad we hit our speed targets as well :)

[@reconab12]

​@@EngineeringAfterHours Yeah this was a cool video to watch however you still didn't beat rctestflight and his fast tracked vehicle because his was only using tracks for movement while you used a half-track design.

[@superengie3062]

i sense a speed competition coming on between you and test flight

[@PJMontoya]

Great job, your hard work paid off in the end. Personally, I’d have sacrificed aero drag for a wider track base to gain stability. But that’s easy for me to say after watching your video lol

[@LayerbyLayerOfficial]

Awesome video! Keep up the great work!

[@EngineeringAfterHours]

Thanks for the kind words!

[@LayerbyLayerOfficial]

No prob 😀 I love your channel!@@EngineeringAfterHours

[@nathanz7205]

Very sick car design, you surely got ideas running in my head with this build. but you cant class a half tracked as a full tracked car. This isnt comparable to Rctestflights version. So no records broken here you just set your own. I dont see any issues with that just a fact, still a very cool project and im glad you showed it with us.

[@LandyXB]

Damn dude, awesome work!

[@FarmerFpv]

Don't listen to the Karens who say it's a half-track and doesn't have the record. A tracked vehicle is a tracked vehicle there are no rules that say a half-track can't compete against a full-track vehicle. Those people who complain are just miserable people with nothing better to do. it's always the same people too. You see them being Karens on other engineer channels picking apart senseless things when they never engineered a thing in their lives. You got the W!

[@urgaynknowit]

I’ve never clicked like and sub so fast; and btw; “airplane boy” is a great guy; it’ll be a good battle . Good luck!!

[@EngineeringAfterHours]

Thanks for the sub! Im a huge fan of his but have no clue what his name is and had to get a little trash talk in :)

[@gannas42]

​@@EngineeringAfterHoursMore excuses

[@adamhale6672]

Wow this thing is amazing. You clearly put in the work and wallet to get to the record. I’m very impressed with the design and improvements you made on this thing!

[@boltonky]

Awesome build and like the idea of the cheap tracks (totally need something like that for another project). In relation to rubber for tracks your going to use a rubber strip riveted to it or individual bits per link, as it has attachment points you could in theory heat steel wire into rubber and attach it to holes...seen different types of tracks but you will always run into rubber coming off at speed or on hard surfaces. Keep having fun

[@meditate_with_me5656]

you tottally robbed that kid of the thrill of beating the record bummer

[@EngineeringAfterHours]

We actually tried but every time he was going to get a good pass, something broke. One of the grass runs you see was actually us setting him up to get the record but we just kept melting gears. He will get his opportunity on one of the upcoming builds for sure though.

[@tknowles7931]

Great video, i have been planning a track build, and yours covers some of the things i had planned. I was looking at using "conveyor chain" which appears to be just another name for the chain you used. I was looking at getting it in a size that fitted bike sprokets so i could modify those to work. I never thought for a second that 3d printed sprokets would hold up to the load, you've proven me wrong there! Are these just FDM printed? What filament did you use? A basic PLA or a more exotic carbon nylon blend, or something else?

[@toolbaggers]

A half-track design means you are competing with RC snowmobiles.

[@unogazzy84]

I'll stick with "fly-boy's" design. This have a good chance of beating the record but his tank is more versatile.

[@charleswall3399]

Keep up the great work, U are on to something !

[@Shadobanned4life]

Very impressive.Bravo Sir !🎉

[@nitronut4206]

you built a halftrack . he built a tank(so to speak), totally different vehicles

[@rotauq]

Very nice design. I havent checked the topspeed of my tracked vehicle yet, maybe i should ;)

[@EngineeringAfterHours]

Do it! I would live to see some more builds.

[@IndeterminateDesign]

That car is both awesome and scary! Your persistence really paid off. I can’t believe the number of gears that it shredded. You need to try for Kevin Talbot’s record of 100mph on grass.

[@EngineeringAfterHours]

Thanks! Talbots record is a great idea. I also thought about seeing if I can beat your 3D printed rc car record but that will be pretty tough :) I also need to find a way to make high speed wheels myself

[@dustinwilson492]

Off road floor jacks are lookin crazy these days..

[@EngineeringAfterHours]

Haha that's the best description I've heard for this thing

[@acynder1]

One very clear problem is that you have way much traction on the front, thus making it spin every time it looses traction. Maybe a narrower front tires would help in stability.

[@EngineeringAfterHours]

I think matching track width is a great idea, but I'd go wider at the rear. The main reason it spins is because the chains have so much drag that they actually lock up without me ever using the brakes. That's not completely solveable by track width matching as it would need a minimum throttle return speed. Unfortunately, this would extend my stopping distance. Rev 2 will see more work here.

[@acynder1]

@@EngineeringAfterHours no no.what I mean is that, at least for concrete/asphalt runs, it would be easier to decrease the grip of the front tires. Maybe using hard plastic tires for drift or using narrow dragster style tires made from a 3d printer and O rings so your half track is more prone to understeer. This, I think, would help greatly at speed to prevent it to spin out. Also increasing the wheelbase (making it longer) would greatly help, although that may be harder to do. It clearly already works great on grass, no doubt about it. But for hard surfaces I think it would be easier overall to lose traction on purpose on the front axle than gaining it on the tracks at the rear. Also you could try a vertical tailfin if you reach a speed were aero plays a bigger rol to aid it to stay on a straight line. A dragster, of any kind, should be engineered on such a way that it naturaly wants to go straight. Yours seems to naturaly want to pivot around the frot axle because is way grippier than the tracks (again, only on concrete/asphalt). You can tell the diference because on grass the from axle is way less grippier that the tracks thus it is more stable and makes it easier to drive. TLDR: Try changing the front wheels for dragster style narrow 3d printed ones with o-ring tires. It will make it easier to drive for speed on the parking lot.

[@EngineeringAfterHours]

@acynder1 i understand what you're saying, but I think you're missing the difference in static and dynamic friction coefficients. The back tracks lock up which rapidly drops the coefficient of friction by 25-30%. You just can't balance a car when half is static friction and the other is dynamic. I actually had a rear wing early on with a vertical stabilizer but didn't like the design I came up with and just ran without. Speeds were too low to get much benefit.

[@acynder1]

@@EngineeringAfterHours oh, I think I understand now. Mmmm... Maybe you could make the tracks longer? So its harder to spin? I dont know... Maybe an arduino to do some traction control? You could read the actual speed from the front tires and lock the throttle in a narrow window around that value so if the tracks kick out it cuts gas on its own?

[@EngineeringAfterHours]

@acynder1 i'm not sure how to fix it honestly, this is a good discussion because it has brought about a lot of potential solutions. I'd have to do more testing. I can set the motor to only slow down at a set rate...that may be similar a poor man's traction control. I think the arduino based version would be best but pretty complex.

[@dustinbetts]

Remelt your prints in sand to remove the lines they will shrink but u can account for that by printing bigger

[@johnandrew5958]

Looks like a lawnmower, but cool Also, as someone said, half-tracked

[@benthreadgate5190]

With a JET of PLASMA!!!! 😂

[@infernoking7504]

I love anything to do with tracks

[@pauljs75]

RC Test Flight still has this one beat on snow however. So a change of place/season is still due for any future proving grounds.

[@EngineeringAfterHours]

Haha he definitely wins on snow. This thing would just sink. That's a strong indicator that we're in massively different regions of the world. We had 47 days over 100F while filming this video...snow would have been nice

[@jasonscreations99]

Airplane boy.... lololol 18k sub channel said what?

[@dangerzone4824]

Awesome build! Do you have a link to the final chain you ended up using?

[@EngineeringAfterHours]

www.amazon.com/Length-Standard-Transmission-Conveyor-Attachment/dp/B08DS3CD6B/ref=mp_s_a_1_3_pp?crid=2V1UXIPA8XU9D&keywords=attachment+chain&qid=1696422986&sprefix=attachment+chain%2Caps%2C101&sr=8-3

[@urgaynknowit]

So umm, can you sell these as a kit??? BECAUSE SO MUCH WANT

[@radunit4805]

Amazing journey beating the old record! I'm thinking you need more width for the rear, atleast matching the front steering width, this could lead to much more stable running conditions. Also atleast add a little suspension for the track so it soaks up the vibrations caused by the road imperfections and could lead to a much faster and more stable speed run.

[@jonathancorbett5917]

Wouldn't a larger front sprocket reduce stresses on all components by making the chain change directions less quickly also most of your stability issues could probably be solved by hanging a tailfin way off the back

[@EngineeringAfterHours]

Interesting thoughts on the front sprocket radius. The only reason it's shaped like it is now is because it looks cooler and theoretically can handle rough terrain better.

[@mumblety]

not a fully tracked vehicle tho. maybe make a set of tracks for the front.

[@EngineeringAfterHours]

Haha I like that idea...like the trx4 traxx almost but high speed.

[@theboxgoblin9981]

add suspension for off-roading?

[@SnowingNapalm]

Sombody upvore this that his rubber studs are mounted upside down as the plunger part is to keep it from being thrown out you wanna ride on the grip hairs trimmed evenly to same lengths try 1/2 inch 1/4 inch 1/8th rubber hair stubble and as you increase speed your oval wants to become circle so design strength spreaders with springs to take out slack from sudden speed changes helping against derailment and slap a solar panel on top for the stupidity of more power/range weight balancing to front slightly with downforce for steering ability and have a steering dampener setting so the faster you travel less responsive the steering left right speed goes but at slow speeds nice sharp turns will help with your imbalanced flywheel and flipping problems, simple physics

[@SkiS_9]

"Bc there is NO way, We're going to let Airplane boy come back against us." 😭Why so Cold?!

[@EngineeringAfterHours]

Im a big fan of rctestflite, but I'm an even bigger fan of trash talk. I don't meant it personally...but I would be doing myself a disservice if I didn't get a dig in there. Lol

[@SkiS_9]

Bro Teach me your Ways!😭@@EngineeringAfterHours

[@JoeMamma-c6c]

widening track distance would make it more stable and more motor room

[@JerrySpeedRC]

NICE PROJECT !!! Just try esc Castle XLX2 and 2028 1100kv or 1700kv. Use battery CNHL G+ or better ONYX . From 8S2P 11Ah battery i pull 569A with voltage drop only to 27V from 33V

[@jkrules4161]

RC Test flight did it better, Good try tho you got it next time prolly maybe

[@christopherosborn7081]

For the sprockets how do you taper in each of the outside teeth so they fit in the chain more easy? What operation is that in a CAD software? I am using FreeCAD.

[@EngineeringAfterHours]

Great question. I use a program called gearotic for most of these sprockets which generates a sprocket DXF that i use for the solid model. Then i use a revolve cut around the central axis for the taper. Alternatively, I've downloaded step files from McMaster and just manipulated those. They have tapers usually.

[@EngineeringAfterHours]

Also I use fusion360 for my solid modeling

[@christopherosborn7081]

Thanks I will try this for my sprockets I have been tapering them my hand. Also your track vehicle is awesome. @@EngineeringAfterHours

[@toolbaggers]

You want to reduce aerodynamic loads on halftrack? That's like worrying about aero on a tugboat. Way too narrow and thus very unstable tracks

[@eugeniovincenzo1621]

You should use an enclosed gearbox with grease..

[@tridentpower6954]

Would carbon fiber or fiberglass work better as gears?

[@EngineeringAfterHours]

Not really. Composites aren't that wear resistant...especially in applications like this. They make carbon filled nylon that is occasionally used, but not in high power applications. Steel would be one of the best choices, it's just hard to find gears in the right size without spending a fortune.

[@bigpig187]

Beside being already half-tracked, If the driving wheels are touching the ground just put a rubber band on a normal RC car wheel to a random pulley and call it a "tracked" vehicle you'll go faster. This thing is as much a tracked vehicle than a plane is a car while landing lmao

[@boiledtea479]

Airplane boy lmaoooooo

[@leeboykin6066]

You should try pieces of wood on the tracks.

[@budsprinting]

Have you guys never heard of the skeeride? 3d printed snowmobile that can run on a brushless RC motor....

[@EngineeringAfterHours]

Looks like a pretty cool setup...couldn't find any top speeds but at 3S I'd imagine it can probably brush up against 40's if it gets traction and can remain stable.

[@budsprinting]

@@EngineeringAfterHours I plan on eventually printing one and finding out. You have an awesome project! I was not knocking it but more asking if you have ever seen the skeeride.

[@EngineeringAfterHours]

@budsprinting let me know how fast it goes! Definitely no offense taken.

[@zoeyzhang9866]

Nice buid! Wondering if any custom PCBs, 3D printing, even CNC machied parts may help for upcoming projects? Would love to sponsor and reach some creative collab together! (PCBWay zoey)

[@dericklong6191]

This is really cool man. 👌 👏 can you post some stl files for it please?

[@EngineeringAfterHours]

www.amazon.com/Length-Standard-Transmission-Conveyor-Attachment/dp/B08DS3CD6B/ref=mp_s_a_1_3_pp?crid=2V1UXIPA8XU9D&keywords=attachment+chain&qid=1696422986&sprefix=attachment+chain%2Caps%2C101&sr=8-3

[@greenmoxy]

Maybe a 90A durometer urethane like skateboard wheels.

[@bornfreeinak]

Comparing "airplane boy"'s affordable open source homologated full track vehicle to a unlimited budget open class one off is hardly fair. I hope you can blast past 80 and sell affordable kits.

[@EngineeringAfterHours]

Homologated? By who? And for reference, his tracks alone are 6x what these tracks are. His 50mph build is easily twice the cost of my 53mph build. I have no plans to sell kits...probably for the same reason he no longer sells kits. It's a money losing venture.

[@bornfreeinak]

Perhaps my comment was foolish. I do wish you the best. Great job too.

[@BenjaminB0907]

Mach ihn hinten breiter so ist er stabiler bei hohen Geschwindigkeiten

[@spriterider1226]

You could have easily got 70mph if you put a smaller spur gear and a bigger pinion gear those castle motors have made rc cars go 120mph+

[@JoeMamma-c6c]

put fender over track they are reciving a lot of drag

[@alienbeef0421]

Lmao airplane boi

[@johnandrew5958]

What music service do you use?

[@EngineeringAfterHours]

Story blocks on this video, I've also used epidemic sounds on most of my other videos.

[@johnandrew5958]

@@EngineeringAfterHours thank you, have a wonderful day

[@hampopper3150]

I wonder what would happen if airplane boi came back to take the record as his wasn't purpose built for speed.

[@EngineeringAfterHours]

He could probably top my speed with just a battery upgrade. Then again my design has a lot of speed margin as well when running dual motors. I'd run a full track if he came back with a better speed.

[@gannas42]

"Airplane boy"? Why you hating? You feel like you're better in some way? Silly kid.

[@fredgerstner2742]

To be honest with you you’re using the wrong ESC set up an motor combo

[@armoredcalvary1273]

You in Houstan?

[@EngineeringAfterHours]

No, in texas though. What made you think houston?

[@Caferacer441]

Use the tracks off a Chrysler sno runner

[@realSethMeyers]

Half track.

[@EngineeringAfterHours]

Yep...39 seconds in

[@computer_man777]

I wonder can it swim?

[@taylorhewson8995]

Nice half track it's the fastest half track rc car we are aware of but not full track

[@Peter-898]

On that Flipsky motor, I'm guessing it has a much higher kV (and therefore much more torque) than would be ideal for a high-speed application like this. I've used one of those with a slightly higher kV, and our motor gives a theoretical max torque of around 6Nm on a 6s somewhere around 60-80A. Even with a wheel diameter of 22cm, the "theoretical" (neglecting efficiency..) top speed of our rover would be around 50mph. If you went for a higher kV version of that motor you could probably get much higher RPM with less current.

[@EngineeringAfterHours]

I think you meant kT in your first sentence, but you're getting close to the issue. The design was actually overdriven to a ratio that should have given me mid 70s at full RPM. But I was limited to around 80A at around 48V. If I had a 200A controller I'm sure I could have gotten in the upper 50s, I just didn't want to spend another $150 - 200 on a controller.

[@Mr.Wednesday.]

Wow

[@torquilmorrison1283]

bro cheated and put wheels flight test still has the w in my opinion

[@CENREAPER-YT]

Just make tracks more apart from each other

[@EngineeringAfterHours]

Definitely a good idea and I will be doing this if I go with a full track version.

[@lambda7652]

Your cheating anyways since you have wheels..

[@Eddiee757]

too bad its a half track

[@LawrenceTimme]

Just buy a real tank, make it rc, feed in nitrous = profit

[@rudolphporz29]

kettenkrad

[@sefferrr]

lmao not only is this not what it said it was and its actually half track record annnnd the entire time it looks like you're doing it with your son who is mad excited for the half track record and then goes out at night and does it when he isn't around lmao L in the chat.

[@TidyRC]

This is not the worlds fastest.

[@bluecaller-eh3qq]

Even if you're craps does manage to go 50 it's not completely propelled and stabilized by the tank tracks that means no wheels I don't know if you realized but in his video he says tracked only he's already beating you even if you do manage to go to the 51 trying to hit

[@curtisnewton895]

without suspension your track is leaving the ground all the time so you cannot get more than around 50% efficiency

[@ErikKoenig-fv3nr]

I'd say you completed with rc test flight but you didn't build a tank you build a car with a track kit installed basically or a copy of a half track not a full tank nice try tho lol maybe learn what a tank is and half track is to complete in the proper category

[@user-jk9zr3sc5h]

no snow pfffffff

[@EngineeringAfterHours]

Lol, there were 47 days of weather over 100F during the filming of this...snows is many months and miles away.

[@gannas42]

​@@EngineeringAfterHoursMaking excuses already