Taking the dual engine go kart off road 

Great suspension work! People who are saying it looks slow - going too much faster in a Kart that size would just end up bending something with some of the rough terrain he's hitting. I think it's doing a pretty good job as an off-road kart. Wouldn't win any drag races, but that's not what it's built for.

Well, the "THIS THING" count was under 15 this video - getting better!

4:05 I wonder how an engine (specifically the left one) takes being shaken like that?

I love how the torque overpowers the suspensions, rising the whole thing under acceleration

That cart just “hugs” the trail! I don’t recall seeing any of the tires leave the dirt! Awesome stuff!!

Watching the rear wheels cam was incredible. Those wheels were PLANTED.

Great trails! I see there is no shortage of youtube armchair engineers and mechanics here today. LOL😆 The machine did great.

Health issue prevent me from being out there. Thanks for the videos. They really help.

That's some of the most watchable trail footage I ever seen. Good job! And that thing soaks up the terrain!

From what I saw it’s a pretty solid machine. All the problems were minor. Great job.

Great Video. Nothing teaches as complete a lesson as experience. Looking forward to seeing it run again after your updates!

Another great video! I forgot how cool go carts are until.seeing your videos. You do great work fabricating these frames and then adapting everything.

Looks Great!!!! The only thing I would add is a set of limiting straps to the front end that way it doesn't rip the shocks apart. #smallenginenation

it may be a little underpowered, but it has plenty of torque and the suspension works flawlessly so i would say the kart is a success

very cool, love it seeing the suspension in action👍👌

Engine part of the rear suspension. Really. Hey, I love your videos keep them up.

I want to see this kart brought back with Juggernaut torque converters, and maybe some even more modifications to the engines (24mm carbs?, new cams?).

Great video, awesome seeing your prototype buggy hit the trails. Looked like it was soaking up bumps pretty well. Nice work!

I reckon it's quick enough for the ground you're running on in the video, I find it's trick looking coolness to be what I like the most about it.

Make a dual predator 420 😂 we’ll see about “underpowered”

It's nice to wake up in the morning with a cup of coffee and a ride to the mountains I can almost smell the woods thank you

Great edits and shot variety. Top notch

Its amazing the carbs can deal with that agitation.

It’s always good to drive something you created.good job

Hey rather b welding you make awesome vids

WOW!!!!! Those engines are taking a beating back there in the independent suspension.

Very nice to see your amazing creations living on the field ! it's a part of the building process... test it break it improve it enjoy it Great entertainment ! thanks

You really need to fix the problem on the buggy with the Honda engine

Has I kept watching , I see it is the same place I rode. Looks like they have improved the parking and trails since I was there last. There are places where the view is worth the trip alone. All my best.

I love test and tune day :) thanks for sharing sir

Nice and amazing project Love it

Your videos are the best I watch your videos every single day

You gotta start putting bigger motors in this stuff man lol love your videos but your always worried something is “under powdered” well start throwing bigger motors in.

Amazing suspension... :-) Nice!!

great job, It's doing what it was built for.

You should do a series were you go back and rebuild/fix/upgrade all of your old abandoned vehicles

That thing looks like a riot!

Suspention looks smooth as hell 👍

That thing looks like it rode like a Cadillac! Yeah you had a couple minor issues but that thing is amazing! Glad you got to enjoy some of your work!

Thank's for the ride! :-)

Did much better than your other buggy. Looked like a smooth ride. Nice work man.

2:45 world best death metal scream.

Nice test ride. All the car companies have stuff fall off on their prototypes, just part of the development process. Can't wait to see the Honda offroading

Looks like u had a blast

That’s so cool you can go here , we don’t have that in Australia

that thing moves nicely

Great job, imagine the sounds of twin 670s

I live somewhat close to you man. Really enjoy all your vids. Keep up the good work.

its working amazing offroad

I love that thing! If you fix the suspension problems I would ask about $5500.00. Wish I could afford it! Suggestions: One more shock on each side of the front suspension! One more shock on each side of the rear suspension. Can you add shocks with out adding springs? Small front skid plate (Better to bounce off than dig in). Sway bar not sure where (real curious what affect it would have). Those motors really shake. That can't be good for them! You have become one of my favorite motor sports channels on the Tube!

Great video, keep up the awesome work! I hope to do some major frame upgrades, as there is only one OHV park that will let me drive my go kart within 8 hours from my house... I don't have suspension, I have 1 inch of ground clearance from the sprocket, and the trails are double as bad as those... off roading was more than a chore than fun....

The left rear suspension is Bouncing more than the other side

hey! awesome work! Did not you think about adding digital speedometer and digital tachometer?

Wheels are staying planted. Nice suspension.

I think it's great. Good job 😃

I have rode on the trails in Brown Mountain NC. Don't know if this is the same place or not ?. Looks kind of like it though. Beautiful place your riding in . Thank you for sharing. All my best.

Great project man the suspension copies the ground perfectly. We need the kart specs

You can lube up those bearing with your steering wheel cake on the Chevy😂 nice video your karts are the 💣

Love the fuel lines LOL

Tires are part of the suspension in the off road world. Looks like you have too much air pressure in yours.

the body seems surprisingly stable

Great suspension

Looks like you need something to keep your knees in if you roll it. Gullwing style cage doors would look amazing on that thing and should be pretty easy to make. Lil gas rams like the ones that hold open hoods or tailgate glass would be cool too cause then they'd stay open till you pull em shut. Also, it might be a good idea to make some removable thin aluminum/steel or plastic paneling to keep out the sand/dirt/mud and don't forget looking good while they're at it. 😎

G'day mate ,hey that thing is a really nice buggy , that trail you were on was pretty hard on the thing , the left motor was coping a caining , it would do so well on a golf course type terain what a cool buggie .until next time ,top job . Mal.

keep the independent rear arms, just change to a single 420 feeding a live axle/jack shaft and chains running down the arms.

i love every video you make...i wonder if u do all that job alone its great..am a fan from kenya.

She went pretty well mate there's always teething issues no doubt you'll fix em great vid cheers

Very nice bro.

Awsome vid man love the dual engin gokart question were did you go to off-road

Nicely done. I wondered about what would happen if you broke down way out there, how would you get it back to the trailer? How about a build of a low speed, high torque tow vehicle?

Looks like a blast lol just showed my dad (the other f in f&f lol) and he was super impressed with the dual engine concept so kep it up man u build some awsome stuff. Ps I'm going to make some stickers for my channel do u want some?

She’s a desert machine, not a trail boss! A nice open beach would be awesome too. If you sell some machines, you can build new, better toys!

I think it's well earned a name.Looking down,with the left camera,it looks like a Mantis.Soo..Spelled this way on purpose.'Preying Mantis".It eats those bumps like they're nothing./The way that left engine took such a pounding,I'd guess it's more of a float bowl issue,than an idle.Hate to suggest EFI,as you've already done so much with this,but that seems the answer.Great Vid Chris.

lol I love it! I am curious to know how long those engines last though. They are taking a beating back there lol

Its a prototype its gona have bugs its actually doin great man

Be cool if you had a drone that could follow you. One thing I would add is a mount for your phone up front so you can run a gps app for maps or gauges.

make it dual rear shock/springs on each side

In addition to stiffening the suspension, it's seems also too high, now most of the acceleration energy/force is wasted in lifting the frame and stretching out the shocks . In resting position the angle of those rear beams should be almost flat, so they won't try to crawl under the frame, but push the frame forward. The frame is not that heavy with the engines on the rear axle basically. I suggest moving the shock position to the horizontal frame bar just above it and a little bit back. This will lower and stiffen the rear suspension a bit an is a relative simple fix. I really like your work, keep it up! :)

Ah man ! J’aime ce projet il ressemble à un vaisseau spatial 👍❤️

That kart rides beautifully though. It looks like the ride is very soft and cushy despite going over rough terrain.

This cart looks to ride like a dream. The only thing I can see is the steering wheel is jerking in your hands. Maybe a steering damper would help.

If you want to, make the front a-arms shorter, so that it has the same stance as the rear, that might limit travel, but it will stiffen it up with the dual shock setup because of there being less leverage on the shocks. As well as, because the rear suspension needs to be stiffened up anyways, you might wanna look into relocating the shocks and kicking them out further to the sides to allow for you to put bigger shocks in different mounting points on the swing arms and not hit the engines. I think that the reason the one engine wanted to die so much was because of the spark boot being broken, lower idle speeds may mean weaker sparks, and with the cable having to arc to the spark plug because the boot was broken may have caused your running issues. And for the air filter relocator hitting the ammo box situation I would just relocate the ammo box to sit higher or build a different mount for it somewhere else, maybe behind the seat? Anyways, this is seriously one of my favorite builds, and the lack of power may just call for an engine refresh, maybe stage 3? I know I said a lot in one comment, but I'm hoping you see it and are able to consider some of these suggestions :) anyways, keep up the awesome work Chris! I really love watching your videos, and these raw driving videos are a whole lot of fun to watch, especially when I hear you laugh and see you smile and know that you're having fun with your builds, cause that's the most important part! I really liked the helmet cam and the camera on the rear suspension btw...

Cant wait to get my mini bike up and running so i can go off roading

Seems like a perfect frame for the other bike motor you now have xD

That thing seemed to work well

8:52 nice keen shoes

You could temporarily remove the springs from the suspension so you can test the full range of motion. (in the shop... not while riding it, obviously) As for the bottoming out... do you have a dial to adjust the dampening? The spring stiffness seems fine... just need the shocks to move slower.

Damn those engines get thrashed around so bad I feel bad for them lmao 😂😂😂

Aside from whatever problems you've had it looks like it has performed good so far. Would you ever do that style of rear suspension again but with only one big engine?

wow! awesome...

Man! That thing certainly appears to soak up the bumps.

Well it looks like it is working well enough, needs a few tweaks. I'm almost pain free enough to start on a few projects.

Is it not harmful for the engines to shake so much?

That looks like an insect soo sick

Crank case and gas tank breathers are something no one talks about

Hello, nice job, I think it would be better with higher wheels for handling(would also allow your chains to touch the ground), independent engines in the rear is original, it would take also an additional bar to turn more "flat" by creating a stop with a slight tension on the front suspensions (making them a little firmer, but less likely to capsize). I think it have little bigger wheels to stay in the category" buggy " (10"-12"?),your motors can do,better confort also.

I was just wondering, this thing has Reverse? I love this Car, I really love the whole thing specially the suspension. Take care and have fun! Also, there has to be a better way to have those fuel lines and throttle cable back there, it just looks a little unsafe. boy I really love that independent suspension.

your next project should be a barstool cart i think you would knock that out of the park!!!

This thing is pretty cool, but after watching this video, I think a better dual engine independent rear suspension setup would have been to set up the rear dirt bike style. Engines mounted to the frame, and then each engine run to it's own swing arm, so that the engines aren't bouncing around like that. With what I am proposing you still have dual engine and IRS.

First of all sorry I don't know your name but I for a long time now wanted a fully equipped shop like you have and I'm very impressed with the machining skills and fabrication skills you have. This dual engine mini buggy has the best performing suspension I've seen for mini buggies. What DOM tubing and wall thickness was in this build? I'm guessing 1" and 1 1/4" .120 wall? I do have a J D square air hydraulic tubing bender and Miller 180 wire welder with tubing notcher. I kinda think that it would be better to have one V twin motor with CV axles so that the motors aren't bouncing around, maybe a built predictor 670, they can be built to over 40 hp.