We bought an $80 Flea Market Mini Bike and Turned it Into a 30 Horsepower Drag Racing MONSTER!
ฝัง
- เผยแพร่เมื่อ 26 ก.ย. 2024
- We turned a dirt bug mini bike (similar to a doodlebug mini bike) that we bought for $80 at the flea market into a drag mini bike! We installed a jr dragster front wheel and tire, a go power sports live axle kit, and we built a tillotson 236cc racing engine.
Thanks for Watching!
Go Power Sports parts used in today's video:
28mm flat slide kit: bit.ly/3oWSFRJ
236cc rotating assembly kit: bit.ly/3V9Kswy
72mm crankcase: bit.ly/3NKiCCN
Shred head: bit.ly/3QV8zMO
Billet side cover: bit.ly/3Nd3QSI
Cylinder head stud kit: bit.ly/3hYqLXi
Mini bike live axle kit: bit.ly/3hUU6zl
Fuel tank: bit.ly/49g9wGP
Fuel tank brackets: bit.ly/3WWcyfV
Facebook: goo.gl/VR6mh2
Instagram: goo.gl/PqOIo3
Go Power Sports: bit.ly/3QKyODE
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Thanks for the invite, boys! Had a blast working with yall on this mean mini!
Hey guys @carsandcameras! To prep a methanol motor for storage you don't need to clean out the carburetor. Before the last oil change, shut your fuel off and then pull the fuel line. Start the engine up.. once it starts pulling the remaining methanol in the the line, submerge the fuel line into a bottle of Marvel's Mystery Oil. When the oil starts being pulled into the carburetor, give it slightly higher RPMs so that your engine doesn't die. It will run very boggy until all of the fuel is completely gone from the carburetor. Now your carb and all fuel components plus your cylinder and crankcase have all been lubricated for storage all in one swoop! Hope this helps!
I do the same thing to my engine I mix mine 50/50 gas and marvels mystery oil
Rumor's been told that to this day, even Derek at Vice Grip Garage doesn't know what's in it! *IT'S A MYSTERY!* 🤣
😂😂😂@@RRRIBEYE
Well, it was made as an upper cylinder lubricant, back when oils didn't have our modern detergents, lube modifiers, viscosity control, etc.
It's not necessary anymore, but the storage idea is great!
Keep the updates coming. 😮 Thanks for sharing!!!!!!😮😊🎉
Engine build AND bike build in one episode? Heck yeah! Apologies for the late upload!
Yea were mad about the free content lol
I don't want to put a damper on your beautiful dad engine building moment, but it is critical to have the dowel pins installed when checking your clearances. It is far less important when using that awesome cnc machined cover, but with a factory cover the dowels ARE the locator and the cheesy stock covers have huge loose fitting bolt holes.
Otherwise a spectacular teaching job and a wicked sounding engine.
Hang on tite!
Port matching gets rid of the "Speedbumps".
Worth the wait!
I love these traditional style, old school minibikes. Like I had over 50 years ago! Small frame, small wheels, no suspension, tall skinny bars, and in the old days a 3hp Tecumseh or Briggs. Not the monster engines they make now!
I kind of prefer these later upload times. Home from work, get to kick back and relax!
Like you can't save and watch it anytime you want.
I prefer to watch these in one sitting. And also like to comment within the first few minutes as well.
Exactly!!
Exactly
Switching to weekly uploads was such a good move for this channel, these videos are Incredible. Absolutely love the longer format videos like this with higher production quality, can't believe we get this content for free. Love you guys
That odyssey is sitting there just waiting for a hyabusa engine 😁
Heck no!! Ruining a beautiful 2-stroke masterpiece to replace it with the most overdone engine swap in motorcycle history?? I say make a custom shifter bike with a completely custom chassis for a Busa, sir.
Really would love to see you guys build a old school style chopper mini bike from scratch .
this would be awesome, id love to see a clean mini chopper build from these guys
The thought of pushing those forks at 100 miles an hour is more than vaguely terrifying.
First late drop has people’s anxiety heightened 😂
im bedridden and bored Over an hour episode is exactly what I needed
Feel better my man!
Me too waiting for hip to heal😊
Laying down some aluminum foil under the drain plug helps direct the oil a little better. You can shape it. I saw it on TH-cam. 😂.
Are we ever going to get new kart build videos again? Or is this strictly a mini bike channel now
Guys. Bring Charles back. John acts like he is building a NASA satellite and not a freaking mini bike!
They didnt fire Chuck, he left on his own accord. At least as a full timer.
No. Tired of Charles also 💀 dudes a nut and always has to have attention or he seems like a pouting child 🤣🤣🤣 can tell Ike can’t stand him much But yes John acts like he’s a know it all but sounds like he read a shit ton of brochures before he went to bed the night before 🤣🤣🤣💀💀💀💀
Just because it's a mini bike doesn't mean you shouldn't take your time and be thoughtful and thorough.
It's what happens with all TH-cam channels. As they grow and become more successful they lose that organic feel on why you started watching in the first place. Whenever a TH-camr gets a Lanmear plasma it's time to stop watching. 😢
Ike is the only one that has a single spec of cool. Ive not seen more dorky gearheads on youtube than John and Charles . Its almost pitiful
Well John knows as much as my wife about building engines Good thing for Ike and Google
In 2019 i bought an exact same stock doodlebug in brand new condition for 250. It instantly got a 212 HF and a torque converter and i was hooked (again) as it had been over 40 years since my last mini. In no time at all, well by the next summer, it goes 8 50s @74 with relative ease. These are so simple and fun. Wheelie bars are a must for cvt torque-a-verter minis if you wanna go quick. Mine carries the front for at least the first 100 feet on the bars. Had a hard time at the track at first trying not to red light beause the tiny front wheel was going up and over the beams. Eventually I figured out how deep to stage and figured it out. I later built an identical doodlebug with nearly the same mods but it runs a hilliard inferno centrifugal. Very interesting testing both minis with only difference being the clutch and drive system
WOOOOOOO!!!!! Much love from Texas guys! Austin area here and we love ya!
I had no idea mini bikes were on the rise. I'm 55 and in 1979 in 5th grade I used to go to the library nearly daily to look at the book, "Minibikes" and dream of owning one. I ended up buying a Honda XR80 and I was the coolest kid (to me, even though I was still a total dork). EDIT : WOW $80 for a running minibike !
Far from running.... was rusted out & locked up. The opposite of running.
When I picture a mini bike I picture a doodlebug
I love Ike but he looks just like Ricky Bobby
My man, great work! Stoked to see young dudes getting their hands dirty and funkin around on shit like this! Thank you also, for not having background music. 😂 This is the first of your videos I've seen and im about to check what's new 4 years later.
That’s a rad mini bike . It’s going to be fun to speed test it.
Actually,if one nicks the cranks rod journal that crank is still usuable as long as the nick is recessed, or emery emory cloth smoothed and polished back up as a slight depression is fine as the crank and bearings do not actually touch one another when the engine is running.. Thin layer of oil separates them and all you've done is create a place where extra oil will fill in...
I've seen and built many engines with cranks that had marks and they've lasted 1000s of passes,laps,or 100s of 1000s of miles... Small nicks,or scratches yes,but not 1/4" by 1/2" trenches...
This is the exact color of the first mini bike I ever built I started watching you guys to learn how to build it
I see near the end you swapped a set of stock mega moto style handlebars. As hard as ive tried to make them work, just can't seem to get drag bars to work on a doodlebug. They hit your knees and put you in the most awkward riding position ever which won't even allow you to make a pass. Both my drag doodlebugs have either the one piece fork bars like stock or a set off an old bmx bike from the 80s. Ive even tried flat drag handlebars with 6 inch risers and nope just can't get them to work.
This whole build is right up my alley boys. Been watching this channel since early 2017 and love how y'all have kept the same vibe over the years.
Micro cart all the way guys. Next project!!
I like your buddy's idea of supermanning it. I'd weld some pegs off the back or off the wheelie bars so you can lay out like a drag bike, so your not so squished up...definitely would be better for aerodynamics and way more stable when hitting high speeds for sure. Or just drag your feet off the back at least, to be more stable. Just my 2 cents...
Love the build though, that thing looks sick too. 👍👍
Waiting to see the continuance of the development of the DRAG RAIL!!!
I don’t think you guys ever keep a mini bike normal and basic and I’m all here for it 😂 that’s what this channel is all about
It would be boring if they didn’t void the warranty on everything
I watch these mostly for entertainment but like to see you get more involved. I've learned over time to use an old main bearing that I grind down the od of of for easy removal and install to use for test fitting and 1st assembly of almost everything. Then I don't worry much about dirt and dust early on. I also don't put rings on.at this point - that lets me feel binding or tight spots easier. Then I disassemble everything, deburr, everything, remove bearing and scrub block in hot soapy water multiple times!!! Wipe bore with oil, install new bearing and seal and assemble. Once assembled put oil in and roll motor around every day or so and again when installing and you'll know oil is everywhere. Also, my theory on push rods is rocker should be level with head, and tip centered on valve tip at 1/2 of valve travel. That makes for the least stress on valve train in my eyes. Cool video!
Hey ike, around 1:31:50 when a fresh engine gets hard to pull ive found the valves need to be lashed again to whatever spec you wanna run, especially with a little heat in the motor. Hot lash is even more important than cold lash. If you run the valves i bet it pulls like butter...lets see what happens...
I can say for a fact this will hold 450 lbs easy. Me and my buddy used to double up on one of these in highschool and ride around our town took everything we threw at it to the point I had a rope to start it and a MTN dew bottle as a gas tank for a bit but then I tore it down gave it full suspension and Honda xr100 motor but sadly while waiting for parts like a new tank and seat someone threw it in the scrap 😂
Guys.. I wish you would have got it together enough to make a run around the Grand Prix. Yes I know it would have been at the bottom of the leaderboard but would have been really cool. You guys don’t have a 79cc on the leaderboard. Thanks for sharing!!
You turned it from the Doodlebug, to the Doodle Bob... Me Hoi Minoy... XD
I bought the same one right out of the back of a guy's truck for 60 bucks 2 years ago it was just red but it was a doodle dirt bug. I bought a 79 CC threw it on there for my son and he loves the dang thing. Does about 30. Love the channel benefit all the way back to the rat rod wagon 💯
You don’t have an oil pump so Ike’s plan to go with assembly lube is definitely the way to go, btw boys I may be wrong here but “lapping” flywheel is for making sure the press fit is exact, not for the binding effect exactly, we do the same thing at the machine shop to make a balancer fit, we hone it slightly so press isn’t too tight or too loose, just my 2 cents
The rod literally goes below the oil level in the crankcase. Assembly lube is pretty much pointless on these engines. You don't have to wait for oil to full up passages. It's instantly splashed on the first revolution. Just saturate the parts with the oil you'd use and you're good to go.
Just a FYI I never put lube on a shaft where it fits in a ball roller or needle bearing unless the shaft also acts as the inner race .
I used to be super careful with h engine builds like that, though that was before i had pulled multiple siezed motors out of the junkyard broke em loose and had them run for years without being opened up, they arent as sensitive to dust and dirt as you would think, bow of course its not ideal to run a ton of shavings or dirt through a newly built engine but it also isnt going to trash it like some engine builder lead you to believe either.
Definitely one of the most explained educational videos you have put out. Thanks guys
O wait why didn't you show the ring compression
I've got two Dirt Bugs and they're my favorite mini bikes. To me they're the quintessential mini bike. One of mine has a 302cc on it, the frame doesn't flex as much once you're sitting on it
That’s a dope, I did a 32/25 head on mine too but I bought mine from EC which was already smoothed out inside so I never had to mess with it. It had to be though because they sell it with the seats and valves already in it and I just replaced the valve springs and retainers with 55lb or 60lb dual springs. Oh and I got you beat on the black venoms because I got the 1.35 😂
I noticed a swap meet Honda Oddysey in the background!!!!
I’m stoked that you guys bought the fl350r odyssey 😊can’t wait to see you guys ride it they are a blast.
Nice welds👍
Death trap should be this one’s name 😂 and make a small boat from the 79cc kne of those like long tails with the king shaft drive
Fastest way, I learn to start an engine, take the spark plug out, put some brake cleaner in the head and put the plug back in and pull
Starts every time
WOW 💪. What an awesome video 👍. The only problem this Old Man from Washington NC had to watch it on my phone 😭. Internet down again so no 70 inch TV. Always looking forward to your videos. 🛵🧔💝💝
Hell ya I can't wait!
great video
Uncle Ike strikes again😅
I mean credit where it's due, but john is really riding that Paul dude's shock.😂
Just saw the shelf of beans fits in perfectly
I was waiting all day for a video
Have a good time guys and as always be good be safe
Cool build , it would be cool to see a revival of the cross cart I believe it's the one with the honda motorcycle engine.
Slitting the fork tube wont make it stronger. Just weld the axle plate on from both sides with full penetration. Cutting a slot for it weakens the fork tubing a LOT
Extended forks also help keep the front wheel down during hard acceleration (drag racing)
2:17 Haha Ike, I saw it, I feel ya man!
i really wanna see a video on that blue car
[ yes, I am a pedant, an Autistic one :-P ]
35:00 - Fugal, petal means inward...
ED
To avoid in future, just say 'angular momentum' it's science.
NB Look up Centrifuge and it's purpose for a reminder.
Feature length fun. Great build lads.
Those amazon electric transfer pumps are amazing. still running the same D battery mine came with 2 years ago. Fills my kerosene heater in the winter, and my boat in the summer! haha
That was first ever mini bike I had
Haha i remember building an engine and needing to compress the rings before it would go in. Not easy.
Love Yalls Content
Really like this format. Been watching as a enthusiast of engineering I follow you as I do grind hard plumbing keep up the good work
Holy awesome guys, your builds are awsome
I hope the frame does not flex too much when you test it on pavement with some traction. Can't wait to see it go down the track.
You guys should take a off-road gocart upgrade the suspension and put a motorcycle motor on it for trail riding
That's sweet I might do that will mine
Ike is the only thing that keeps me watching these videos, no offense to John but I like the advice from someone who actually knows what they are talking about. Not just big words and nonsense to sound good.
🤣😂🤣😂🤣😂😂 you think 🤣😂🤣😂Ike knows what he's talking about 😂🤣😂😂😭😭😭😭😭 holy crap man.
John, take out the two oil drain plugs and scrub them out with an oil gallery brush.
Yall should put a 225 in the old golf cart, that would be epic
Debate time!
Smooth bore intake
Or
Dimple intake to allow the golf ball effect.
Or
swirl intake to improve the squish and swirl of the fuel air ratio for superior combustion
Another things that's important to discuss when building an engine is ring gap. Metal expands when it get's hot and the last thing you want is for your rings to bind because they got to big for the bore. Most engine manufacturers have a rating for how large the gap should be which takes a lot of the guess work out of the job.
Yeah, I was waiting for this to be mentioned in the video.
They come pre sized and have too big a gap for methanol so nothing needed to be done there.
Modern performance ring technology has found opening up the 2nd ring gap slightly larger than the top compression ring keeps gasses from stacking up between the rings and works to reduce ring flutter and unloading the top ring from its land under wot high rpm
Ike reminds me of my dad and John reminds me of… me 😂 we ask the same questions and get the simplest answers, “ use your finger and just * swoop air noise* “ 😂 love the vids guys I’m 17 now and I’ve been subbed and watching since my 13th birthday when I got my FIRST mini bike 😁😁😁
my birthday is the same month and day as your connecting rod lol thats amazing
ive owned one of these, if you can i would reinforce the joint that connect the cross tube for the foot pegs/engine plate, and the rest of the frame.
Damn Johnny,
You're pretty smart there. Not just a pretty face/ drag race record setter.
I wish I could figure out how to send a picture of the before and after but like I said my first mini bike was a yellow dirt bug and then I turned it into an orange and black devil stelios kontos
The Monster Bug going to be a machine.
I am interested in the Blue car in the background. Year, Make and what are the plans to get it back on the road.
a general rule of thumb is 86-88% of the valve size for the port throat size, too large and air velocity will drop
I wanna see Captain America's mini chopper. 🤗
Assembly lube for a mock up is a bad idea. It will attract debris and may keep you from seeing an issue. A dab of clay on that counterweight and rotate and it will show you how much clearance you have. A no noise check will only tell you it isn't hitting but heat and flex may allow contact in use. Figure a temp change etc and check if there's enough. I do like the "hands on tech" format and style of this video.
Finally a minibike video🤘
Where is Charles hiding out?.......I hope he makes some videos at the coast
I know it sounds insane, and that's because my dream bike IS INSANE.
I wanna put a big ass KOHLER 2 cylinder engine on it, with a custom frame to fit the engine.
I don't think there are many mods available for those, but I love those V-twin engines lol
Ike said 75? Pssshh i was thinking a hunerd lmfao my guy sole handedly keeping this channel alive
Nice work, fellas! 😮
you guys should really pave a mini drag strip on the land
Good to see you guys put training wheels/ wheelie bars on for Ike
I have a 196 that’s been chewing the rod for awhile the oil comes out looking like metallic paint but it just keeps going
Watching you guys at the track is going to be awesome. That is one wicked machine. Good luck and be safe. I will see you later.
You guys should challenge another mini bike gokart channel and have a multi stage off road tournament
my first engine build was a zeda 80 firestorm, a bicycle 2 stroke. it's a good beginner engine, you'll learn a lot, and there's no valves so it's pretty simple. 200 bucks for a whole ass kit
good luck fellas, that's a nice lookin build
It's always surprising how well am little 2 stroke can run. I wish the 49cc pocket bike engines had a robust trans on them like the bike kits... They have a flywheel fan cooling them and the bike kits tend to get hot. Otherwise, an eBay 49cc (40cc ish) engine is only $43 and there can be mods done to learn on. I have one, runs ok but needs a bigger jet out the box
I love the intro of your videos 😂 they never fail to make me laugh.
I like the longer video
Ike, waiting for it to chunk a rod with your safety goggles hanging on your shirt! Damned glad I'm not the only one doing s-it like that lol. That little Doodlebug wants to be a chopper when it grows up. (extended forks with a skinny front wheel would really make it a custom and not a chopper, but everyone's been calling 'em choppers.)
In the beginning I was thinking make it a chopper to lower it and make it look cool.
@@richardhatt6541 the rake alone would stabilize the bike in a straight line. Those extender and raked forks used to be the trick for drag racing. And it does look cool 🙂
@@richardhatt6541 , I'd like to see Ike and John recreate the bikes from Easy Rider in mini form. They could dress the part and ride 'em in swap meets, car shows etc. Bet they'd have more fun that they'd think.
This is the bad ass stuff I like to watch
"That's a lot of dude to fit on that bike!"
You need a third it stops Ike from continually dropping stuff [ Reverse ASMR ;-) ] and seems to work.
Remember TG was 3 ;-)
Damn... The golf ball surface ❤❤❤ That was my Uncle Bills trick for restrictor plated briggs on racing gocarts, starting like at least 22 yrs ago.. Well thats whenni learned. He was also super of a course so wonder where the idea come from. Haha Shhh dont tell. Had to find things for that edge legal.. Minor cheat was to flex plate mildly for slight oval. Small engines, benfit frim small things. But mad love on that knowledge!!!