Assembling the NOS Kit: A Mini-Bike Makeover

The process of assembling a nitrous oxide system (NOS) kit on a mini-bike is a intricate task that requires careful attention to detail. The first step involves installing the fuel pump, which is essential for providing the necessary fuel flow to the engine. "We have a fuel pump," says the narrator, "and it's going to be the heart of our NOS system." The fuel pump is mounted securely and connected to the engine block, ensuring a steady supply of fuel to the carburetor.

The next step is to install the solenoids, which are responsible for activating the nitrous oxide injection. There are two solenoids in this setup: one for the main NOS valve and another for the secondary NOS valve. "I have mounted our fuel solenoid and our NOS solenoid," says the narrator, "and now I'm getting our fuel pump in place." The lines connecting these components need to be carefully plumbed to ensure that the fuel flows smoothly through the system.

The NOS bottle is also filled with a high-performance nitrous oxide mixture, which will provide an extra boost of power to the engine. Joey arrives with the NOS bottle, and the narrator comments on its appearance. "It's looking pretty cool," he says. The final step in assembling the NOS kit involves installing the activation switch, which is connected to the solenoids and will activate the nitrous oxide injection when triggered.

Testing the NOS Kit: A Wild Ride

With the NOS kit assembled, it's time to test its performance on the mini-bike. The narrator takes the bike out for a spin, feeling the familiar sensation of the engine revving up. However, as he accelerates, the bike suddenly surges forward, catching him off guard. "He just hit 21 whopping miles an hour," says the narrator, laughing.

The goal is to increase the top speed even further by using the NOS kit. With a new baseline established at 21 miles per hour, the narrator sets out to reset and try again with the nitrous oxide injection. After several attempts, he finally gets it right, hitting a respectable speed of 28 miles per hour.

However, just as the narrator is about to celebrate his success, disaster strikes. The engine suddenly catches on fire, and the bike screeches to a halt. The narrator comments on the unexpected outcome, saying "I was worried about you." Fortunately, an extinguisher is nearby, and the situation is quickly brought under control.

In the end, the narrator concludes that while there were some bumps along the way, the NOS kit successfully delivered on its promise of increased speed. With a little bit of tuning and practice, this mini-bike should be able to reach truly amazing speeds.

WEBVTTKind: captionsLanguage: en- What happens when you putnitrous on a tiny motorcycle?(motorcycle engine revving)- No.- Oh God.Wonder way- Will NOS actually makethis little mini motorcycleany faster?Or will it blow up in betwixt my thighs?We got a whole track today allto ourselves to test it out.I'm Jeremiah.This is Donut.(motorcycle engine revving)Thank you to Keeps forsponsoring today's video.- Captain a black hole is formedat the center of the glamorous galaxy.- No need to panic Mohawk.Let's just fly down and giveeveryone a ride outta here.- Captain, it appears we don'thave enough room on this shipfor an extra 30 billion,800 million life forms.- We need to do something.The chance of survivalis thinning every second.Thinning like hair.- Well, I know one way to prevent that.And that's with Keeps.Keeps, makes hair loss prevention easyby shipping your hairloss medication directlyto your door every three earth months.Plus you get access toreal doctors online.Now that's out of this world.Hang on everybody.Woo!Start your hair loss prevention todayby going to keeps.com/donutmediaor by clicking the link in the descriptionto receive 50% off your first order.- This all startedwhen we bought a nitrous kitthinking it was for a pit bike.- Nitrous kit for a pit bike.(laughing)- What?- But it turns out we misread the adand the guy actually wantedto trade for a pit bike.But in the comments you requestedthat we actually make this videoso legally we have to do it.So we got the most insanesickest motorcycle we could findat Walmart.So now that we have our pit bike,we decided to set a baselineto see how fast thisthing is without nitrous.Joey down there he'sgonna check my top speed.It's not gonna be much.(motorcycle engine revving)- 18 miles an hour.- 18 miles per hour.That's our benchmark.Now the speed on this bikeis limited by a governor.So I only expected the NOSto improve my accelerationnot my top speed.And in the case of this first testI reached 18 miles perhour in 3.9 seconds.So nitrous oxide or N2Ois what we're gonna betalking about today.Now you know you need air, fuel and sparkfor your engine to run.Well, the air component,we care about the oxygenpercentage in that air,which is 20%.Now nitrous, on the otherhand, it has 33% oxygen.And when you have more oxygenmeans you can add more fuelso you can make more power.And there are two main waysin which you can deliver nitrous.You have a wet systemand you have a real cheap and dirty systemand that's called the dry system.So what I've got here is a dry kitand this little thing costme about a hundred bucksand runs on canisters of NOS like this.You push this little button right here,the NOS travels down this tubeand it goes screaming out this jet.So what I've done is I'vedrilled a little hole hereso that this jet is gonnasquirt high sexy NOSstraight into the car.But here's the thing, we needmore fuel to make more power.Otherwise this NOS kitis pretty much pointless.So I have to re-jet thiscarb to deliver more fuel.Unfortunately, when I don't have NOSit's gonna be running pretty bad.And this is kind of why mostpeople don't use dry kitsespecially in carburetted applications.It's just not practical.But we're gonna try itand see how much morehorsepower we can getwith our little Coleman minibike.Oh, look at that.Just threading her out.Aw, now I can put somenew fresh brass in there.Let's go install this on the bike.NOS line routed right there.And let's mount it right there.I'll just zip tie it up.This should be totally secure.Nice.Great.All right boys, we're ready.Okay, we have our stock bike herewith our dry kit installed.Honestly, I don't think it'sreally gonna work that greatbut I'm gonna give it a fair shake downand we'll see how it goes.Okay, you ready?(motorcycle engine cranking then revving)- All right, yeah, we got quicker.(motorcycle engine revving)So is it a lot?No.Is it sustained?No, but you could definitelyfeel it in the butt.So now what we gotta do is get serious.Let's go put on a wet kit.Now this is a wet nitrouskit and unlike a dry systemthis will deliver nitrous andfuel hence why we call it wet.Now because of thatit will be able to maintaina proper air fuel ratioand make us a lot morehorsepower theoretically.But here's the thing,our little Coleman bikeonly makes six horsepowerfrom the factory.This thing is 40 horsepower.So before I goand just send 40 horsepowerto a Chinese engineand have charges just blow all the way up,I'm gonna build thatmotor up a little bit.Starting this lovely Billet flywheel.I have a new carburetor,connecting rod, intake,exhaust, valve springs, ham shaft.This little bike's gonnaget dangerous quick.(upbeat music)So I have my OEM flywheelwith this plastic contraption on the topand here is my Billet boy.It's much, much stronger.So that is our governor.That's what's limiting our top speed.So I'm gonna pull that sucker out.We got us a fully disassembled engine.How long did that take?15 minutes?Let's see how long it takesto put it back together.(machine whirring)Good compression.Now how this systemworks is pretty simple.I have a fuel side andI have a nitrous side.So on the fuel side I have a fuel pumpthat's gonna pressurizethe system with fuelwhenever I get ready to hit this button.Now controlling the nitrous andthe fuel are these solenoidsnitrous goes in one port here in the endand fuel goes through the F port.Now in a car you're gonnamount this somewherein your intake manifold,but on a Coleman minibike,it doesn't have that.So we've tapped directlyinto the air filterand you can see we haveour jet pointing directlydown the barrel of the carburetor.See that little jet?We're gonna get healthy,healthy fuel and oxygenmaking instant power like that.Okay, so right now I'm justassembling the NOS kit,making sure I get all mysolenoids wired up correctly,all my lines, we have a fuel pump.There are these littlejets besides that hole,depends how much horsepower I'm gonna get.So I have five horsepower jets,10, 20, 30, 40 horsepower jets.I don't know if we're gonnamake it up to that point.If we were to put 40to it it might blow up.(upbeat music)(machine whirring)Dear, look at this.This is great here.Okay, so I have mounted our fuel solenoidand our NOS solenoid,I'm getting our fuel pump in place,getting the battery squared away.Got all our lines pretty much plumed upand Joey is on the way backfrom getting our NOS bottle filledwith sexy sweet go fast juice.This is my activation switch down here.So this arms my fuel pumpand now I have our final go go fast buttonwhich I'm gonna put right here.Those will activate our solenoidswhich will squirt our nicejuice right into our carburetor.- Yeah, that's gonna look sick- Boys look at that.I think look as tight as hell.- Hot dog.- Great.- Go switch- All right, that's it.We got our fully built out motor,now with a custom installed nitrous kit.I think it's time to go testthe sucker out, shall we?(upbeat music)Okay, so we have ourbuilt minibike over there.It's a little bit of a hard thing to startwith a crappy pull cord.So I'm letting it warm up right now.Since I did a full enginerebuild on this bikeand remove the governor thatwas limiting its top speed,I needed a new baseline without nitrous.This time however,we'd be after the highestpossible top speed.(motorcycle engine revving)- He just hit 21 whopping miles an hour- With a new baselineof 21 miles per hour,I was ready to reset andtry this thing with NOS,but of course it wouldn't be a Donut videoif something didn't go wrong.I mean it's just not enoughvacuum being pulled throughfor it to like miss when we hit it.- Well is the nitrous shooting?- No, the nitrous isn't shooting yet.So that'll help fuel out I think.- Right.Okay, nitrous is on.- Oh, I think I'm just feeling this one.So at first it felt likethe solenoid was firing'cause you could feel a click in itbut I was just feeling the clickfrom the other solenoidtraveling through the chassis.So this one isn't actuallyfiring when he hits the button.So probably just a simplewiring issue probably.- Fingers crossed.- Fingers crossed.Oh there it is.- Is that fuel too?Yeah.- We got nice littleatomization of our fuel,our NOS is firing.Dude!(motorcycle engine cranking then revving)All right we got the bike started.I'm gonna take it ontrack, run it with NOS.Let's go.- I hope the nitrous setupworks and I hope he can feel it.I hope it feels cool.'Cause I know this has beena lot of work for Jerryso I hope he gets a little payoffbut what do I think's gonna happen?A lightning fast pass.(motorcycle engine revving)- I did it!- And he hit 26 miles an hour.To everyone's amazement,the bike responded reallywell when I gave it some NOS,but 26 miles per hourstill wasn't fast enough.So I decided to try it again(motorcycle engine revving)- Very good.Hit 27 that time- And again.(motorcycle engine revving)- Oh 28!- And again.(motorcycle engine revving)- Oh he's on fire.(engine dying down)- Oh God!- Run away.(extinguisher firing)I was just worried about you.(laughing)I wanted to make sure you're all good.- I heard something go(blowing air profusely)I looked down and it was on fire.So when it sprayed I'msure it soaked that filterthen a little backfireproduced a little...- Hey, but you hit 28 miles an hour.- Heck yeah!With a little bit of tuning and some time,dude, this thing will be sweet, man.Hitting the NOS is really fun,not so much when it catcheson fire from a backfire.You know what, I chalkthis up as a success.Thank you so much forwatching this episodeor anything else here at Donut.Like, subscribe, all that good stuff.Until next week.Bye for now.