building the long travel full independent suspension dual engine go kart part 5
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- เผยแพร่เมื่อ 9 ก.พ. 2025
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The parts I used in this video:
V-tread front tires
bit.ly/2MGCLLE
V-tread rear tires
bit.ly/2BrCVCu
8"wheel rims
bit.ly/2wbtEbR
live axle hubs
bit.ly/2OQLrwH
1" axles
bit.ly/2MGN2ry
axle bearing kit
bit.ly/2wbAazf
brake disks & calipers
bit.ly/2Byanay
brake disk mounting hub
bit.ly/2vT2Zkq
engine mount
bit.ly/2ByaZNo
torque converters
bit.ly/2MwC9Zd
rear shock assembly
bit.ly/2MX6L6s
front shock assembly
bit.ly/2vWplSe
steering wheel
bit.ly/2BqsqPM
steering kit
bit.ly/2OS7HGz
engine performance kit
bit.ly/2MyzDS1
headers
bit.ly/2OLwaNu
mufflers
bit.ly/2MyB17b
driver seat
bit.ly/2MmUOXT
Music by Epidemic Sound (www.epidemicsou...)
Congratulations on reaching this point of the build! That suspension articulation through the ditch was awesome, well done! One suggestion before you hit the off-road park: Try testing this with only one engine running. Obviously it won't do very well...but when you're out on a trail alone after blowing up one of those modified Predators, it would be nice to know you can at least limp home without needing a tow. Keep up the GREAT work!
The trick to limping it back with a blown engine would be to pull the chain off the sprockets for the wheel with the blown engine although it would only be a one wheel wonder it would be better than dragging what remains of the driveline
@@dodgeme1986truck My god you're insufferable. This is the 4th comment I've seen from you where you flaunt your "extensive knowledge". No one cares how much you supposedly know.
@@dodgeme1986truck question: if one engine broke down, wouldnt the chain without removing it from the broken engine simply free wheel the driven clutch on the broken engine side? It is after all not a direct drive to the engine itself but runs through a drive clutch. Yes it would rob a tiny amount of power to freewheel the the driven Clutch and belt, but it would be slipping on the Drive Clutch and would not be much resistance to over come.
@@johntingle455 unfortunately no there is actually alot of resistance and you could end up with a situation like cars and cameras did where the belt doubled over into the drive clutch locking the wheel solid ex. My mini dozer weighing only 1k lbs. I built... when I had to flat tow it (one of the transmission shafts bent when the ripper caught a massive unseen buried boulder that the dozer tracks were directly over)... while pulling with the final drives intact ended up spinning my 1 ton trucks tires (4×4) weighing 7.6k lbs. However after disengaging the final drives was able to be pulled with a little dodge dakota(4×2) >2k lbs.
The reasoning behind this is parasitic gain (basically the opposite of parasitic loss) for ex. Let's say the driven clutch weighs 4 lbs... the final drive ratio being 4:1... and the tire being 24" dia. Let's say the tire is generating 1 ft lb. Of torque when you push the vehicle. Now that 1 ft lb. Has to try to overcome frictional gains but not only that but try to start the 4 lb. Flywheel (driven clutch) spinning at 4 times the tires rotating speed... let's say for simplicity reasons with the frictional losses the combined parasitic gain is 5:1 (500%) that means you need 20 lbs of force continuously applied to spin the driven clutch. With a parasitic peak at the point when you attempt to start moving you could be looking at forces as high as 25 ft. lbs. of force needed every time you attempt to start moving. Now by removing the final drive you eliminate the 4 lbs. of driven clutch as well as the parasitic torque acquired by the 1:4 ratio (gets reversed because input and output flip rolls when the tire is used to drive everything) when trying to spin the driven clutch. So with the final drive removed you end up only trying to spin the tire.
Watching the way the rear suspension moves as you go around corners is really cool
That’s hot.One of the best go kart I ever saw.
Congratulation on a great build. That kart is so bad ass. Loved watching you build it and looking forward to seeing more.
Awesome job on that suspension. Sweet build
That's the sickest g kart build I've ever seen. That takes the cake. Redbird is a badass your a savage.
Very nice mini buggy! I love the articulation it gets on uneven surfaces.
All I can say is it's sick bro ,hands down the coolest build yet ,I think you'll have trouble topping this one ,love the suspension travel ,👏👏👏👏👏👏👏👏👍👍🙏
Thos thing is f'n awesome. Seeing them suspension work independently was great and the aggressive look is great.
If somebody asked me before you build it, I would have said that the difference in engine performance would steer this thing constantly to one side. I am glad to see I would have been wrong and it's not such a big issue. Great build. Keep it up :)
I think the torque converters allow slipping of the belts to make up for the issue.
Man that thing looks amazing!!! Watching the suspension flex made me appreciate it more. Great work
That articulation is exceptional, the spring rates look about right though the geometry of the rear seems to raise it substantially on acceleration - might be useful in the field. I'm sure youll find the any problems with damper rates in field testing. The dual drive is a marvel - no diffs, and it creates a drive system completely controlled by the driver (you need two accelerator pedals, or some mechanism to alter power distribution). Very impressive Mr. B! Other commentators have mentioned vacuum in the tank...I'm sure you'll sort out the problem, but both engines dying indicates a common cause...like vacuum in tank or the need for baffles in the tank. Thanks for a great video and series.
Great looking machine lo e how the,rear end flexes the wide stance looks great
You did a really nice job. Very impressive. Your videos are of a tremendous help
That ditch articulation was sweet.
Holy crap dude that thing is beautiful. I love the independent suspension, looks like it works great, just awesome! Looks fun and comfortable. Great job!
You've got some serious skills. And tools!
Man you’re killing it with these go kart designs , I want one now
Love the rear suspension, Great job!
Dude it’s so awesome you make pretty much all of the parts you need. Hope the hurricane didn’t hit you too bad.
Awesome job sir. Absolutely love it, that suspension looks like it makes it comfortable to ride as well.
Great job! Time to call up Red Beard again for another ride in the rain to test 'er out.
Awesome machine. The only suggestion I have is to increase the height of the wheel/tire. The rear sprockets are very close to touching the ground under articulation. Plus it would just look way better. They appear drastically under sized for the vehicle.
Yeah maybe he can just build a guard
Gerald....if I'm not mistaken. The sprockets get no closer to the ground under articulation or not...he could pehaps put on larger wheel and tire combos or just larger tires to increase the distance of the sprokets from the ground. But that new distance would be constant as well and would not change under articulation.
@@johntingle455 they do get closer to the ground under articulation as an example take a ruler, board or just about anything about a foot long hold one end about a foot off the ground that's the tire side...turn the bar on the opposite end (sprocket end) up and down keeping the tire end stationary. As you will note the sprocket end gets closer to the ground. This is the effect that is taking place when the suspension articulates especially when he was crossing the ditch or when the vehicle leaned while turning there was significantly high movement that moved both sideways and up and down and if you hit an obstacle during this movement you could end up shattering the brake rotors/ sprockets, bending the axle shafts, breaking a hub or rim, and/or destroying the bearings.
Think about sway bars if you pick up more speed....love it
Vent your gas cap! Great job making this too!
I wonder about that too, nipple and a tube in the cap, simple. All engines seem to have it for a reason, fuel goes out air goes in or it creates a vacuum and fuel flow problems. Nice build, he sure has developed some awesome skills over the past few years.
Thats a nice little roller you got there to make the tank. need to make one like that!
Your suspension is sick.
The articulation in that suspension is awesome that buggy is a beast hope you get the issues sorted and let rip
That thing is the sickest thing I’ve ever seen
its badass but would be way better with bigger tires and would add ground clearance
I agree only thing i can think and a tcase for 4×4 but it wouldent even be a gokart anymore
Dude that kart is looking awsome!!!! Your a beast man!!!
Very enjoyable to watch. You are extremely talented !!!
Great job Chris! Way to think outside the Box!
Your a genius man! This was my favorite build yet.
That thing is bad ass man nice job there will always be room for improvements that's the fun of it all.
Awesome independent suspension sir 👍
Great job bro! You are very talented! Don't worry about all the comments telling you what it needs because its obvious you know what your doing and I'm sure you will correct anything you feel necessary.
That suspension works so good
love the metal roller
I wonder if it's homemade.
Really nice build, it really has a lot going for it there are a few things I think are a bit off on it but not worth mentioning, it is an awesome ride.
Chris awesome kart I absolutely love it I hope it does really good off road
Nice technique on the tig man!
That is the best suspension I've ever seen.
Add 2 more engines... :D 4 wheel drive 4 engine build!
Overkill
Cars and Cameras already dood it.
I have a couple of project ideas that cars and camera's hasn't done.
and he needs to make the front tiers with the same independent suspension!
Iam Lonefrog ratherbwelding would make a way better version tho
That's bad ass, hydro test is the best, i live tig welding it's fun. Awesome video
That is a sweet machine, the only weird thing about it is the front wheels are wider than the back. Quick fix would be rear wheel spacers
You should make blueprints for your gokart builds cause I would love to make one of these.
Beautiful suspension. Now it looks and rides like a real buggy.
Great work bro this thing is just awesome !! 👍👍great engineering
What an awesome project!! Well done.
Imagine how cool this sort of build could be if gas vs battery energy density was on par already.
Love it You could probably get away with bigger mud tires, looks geared low enough. Cool
Thats the coolest one yet. Paint it bright red.
I need one of these karts in my life!
Awesome job my only two suggestions you really need skidplates to protect the rear undercarriage under each motor and number 2 if you'll add side mirrors that can be extended out when backing up and that can fold in when going through areas that could impact your mirrors great build
Damn!!! I need a friend like you.You're a beast.
Take my money..!!!!!! That is saaweeet!!! Looks like it'd be great for rock crawling.🤙🤙🤙🔥🔥
I been following on ur projects and man u have some mad skills I love working on my own projects and I have learned some stuff
Swap on two Predator 301s and some taller & wider rear tires. Good job on that suspension.
I am a first time viewer. That chassis is badass. I think you have something there.
Congrats well done on the build , love how it moves and i cant wait for a hill climb or 2
He is getting better and better and as he learn we all learn to it's like a free school on motorized toys builder's
you have talent building that
I like as soon as one comes out like that
So sick the chassis dance
Let me just start by saying you really outdid yourself the way all four of them Wheels stayed on the ground was freaking astonishing to me (dual engines I don't know) but then again I also don't know how you would have such travel with just one engine.( great job keep it up I'm definitely going to follow you from now on that thing is amazing you should go four-wheel drive next because with that same type of chassis nothing would stop you
Very cool. Just make sure your fuel tank has a vent.
Pretty sick buggy!!!!
Nice video! Can’t believe the suspension works so good!
Wow dude 1 crazy set up love it
Awesome build
i think a cross bar at top with a camera mount would be cool
Your cart is amazing! I don't care what the haters say. A+++! I wish I had your welding skills, top notch!
I truly love it I'm your biggest fan of this build should paint it with black and red weld on the nose plate paint it Black with red writing saying the yard predator!!! With a small predator face in vinyl decals wouldn't cost more than 20 bucks
That's twisted cool!!
I watch all you guys cars and cameras Red Beard garage and Rather B Welding and I got to say brother you are the most original best design pretty awesome dude just need longer shocks on front so it can be a true long travel
don't you need a hole in the fuel cap, to prevent a vacuum?
It has one on the tip of the cap
@Keegan Browning yes it is to prevent vacuum from being drawn on the fuel tank which will stop the gravity feed fuel flow. Even though it's actually referred to as a vent port it's 2 primary purposes are to vent pressure from the fuel tank and to prevent creating a vacuum in the fuel tank as the fuel leaves the tank however he may need to increase its size/quantity due to 2 engines effectively creating twice the fuel demand resulting in a higher rate of vacuum buildup in the tank at all engine rpms that the vent port needs to bleed off. And there are maximum volumetric flow rates for a given hole size.
Captian Obvious has taken yet another TH-cam comment joke (followed by slow clap)
@@doodlebug6833 I was only asserting the prior posting was in a sense wrong and misleading as I could probably teach basic engine and carburetion 101 and crater the avg. "Mechanic's" mind with knowledge overflow in my sleep (my background being what it is) Hell I've probably forgotten more about engines and carburetors than most "mechanics" have ever even learned. Hell I rebuilt my first non running engine and carburetor back to an optimized running engine when I was 5. And by 3rd grade I was stumping and baffling my teachers because the books I was reading were college lvl books on theories of internal combustion engines and fully understood what I was reading.
Edwin Russell took the words right out of my mouth. Yo that rear suspension looks dope when you’re turning, it also looks like it rides like a Cadillac nice job!
You need a small hole to relieve pressure in the gas tank
Has to have a vent.
The cap probably doesn't have a seal on it
Next build, Use two vespa engines with big bore kit. i think that would fly!
That thing is like a Tarantula. That thing would rock on the sand dunes but it's super wide stance might hinder it on narrow dirt/rock trails.
Adding an extra pair of wheels inside the swing arms on slightly longer axles would prevent the sprockets and brake discs touching the ground during heavy articulation, and give more traction in some circumstances. Might also keep it a little flatter under hard steering.
Larger drive wheels would probably be beneficial. Cool design!!!!
Well done from an old guy.
Damn you're really awesome I'm liking this little go-kart
that thing is a beast!
That looks like a pocket sized rock crawler with that suspension
Most impressive build...........and I never comment !!!
Before you replace the engines because they won't idle try taking the carbs apart and cleaning them. If they set for a year the low speed/idle circuit of the carb maybe clogged.
But if you are going to stage 3 the engines anyway, then the carbs will be replaced at that time...
As explained many times you need to vent the gas tank. I think you will also find you need baffles in your tanks. On a single engine it won't do much but stop fuel slosh with the tanks mounted as high as you do. On this one I think you will find once the fuel gets low it will also starve one or the other engine. The starving engine will sputter causing it to torque steer. Helpful in turns as long as the starving engine doesn't die. A cheap and easy trick to add baffles to a built tank is to get a bucket of the plastic practice golf balls with holes in them. Stuff the tank full of them through the filler.
I think I'd also look into cutting brakes on the rear. Hydro hand brake for each side (mech would even work). Lock up one rear wheel, turn the steering to that side, give it gas, and it'll turn on a dime. With it's width will be helpful on tight wooded trails.
You never seem to amaze me keep up the good work
You are Go Power Sports one and only hope 😉
one of you talented folks needs to make a building montage in the style of thr A-team with the music :D
nice articulation. well done:)
Great job, I wish I had a friend like you. I would go with bigger tires though.
recently saw (C&C) the 10hp 212 Tillotson, slap a pair of those on it and call it art.
luv it, 👍ima say go for some dirt bike wheels and some dirtbike track driving when u can. promise u, everyones drooling @ build
I think this cart has enough justification to put a lot of camber on the wheels. There was a lot of leaning on the car in a turn.
or a seatbelt..
front rear torsion/sway bars would do, but too large can detract from easy articulation. still might be nice to ditch about half of that body roll.
It need to pass the Ryan test, then it's done!
I would love to see an all wheel drive hydraulic wheel motor powered rig with a fully articulated suspension. You have the start to a good crawler, just need 4x4.
K Y they are not very efficient for that type of use
I wish some company would build an actual 3 or 4 speed gear box for these with a clutch...
nothing saying you cant use a motorcycle transmission there are some that are not attached to the engine
@@drewalsup9200 yep, they exist.
@@drewalsup9200 I'll certainly look into that....thanks for that...
They are out there, they come with a 2-3k price tag