As a motorcycle mechanic & motorized bike builder that is the most intelligent engine explanation I have ever heard.

It’s taken me over of year of watching videos like yours to finally indulge my inner child. Being north of 50, I have no idea how much I’ll ride the thing...but I just ordered my Wildcat motor this week and am narrowing down the beach cruiser that will fit my style. When finished, it will come close to your dream build that you made the 2 part series on. Thanks for the helpful videos...I’m sure they’re gonna help me with my mid-life crisis.

as someone who worked landscape maintenance i know that most of our tools were 2 stroke, chainsaw, trimmer, gas blower ect. and i was always under the assumption it was becasue not only the versatility of movement not having to worry about the engine staying level during operation as well as their abilitiy and optimized performance as an engine that is designed to be at full throttle for long periods of time. for example during hedge season we use gas 2 stroke hedge trimmers and run them up to 3 hours straight at sometimes comeplete full throttle. these engines operate like this 10 hours a day and these machines last 5 years or more. I always here people on the motorized bike community though say that 2 strokes dont like to be at full throttle for long peiods of time. Im curios why is this the case as most other 2 stroke engines are designed to be operated at full throttle for long periods of time, i men think about it Even lumberjacks how would they be expected to work all day if theyre always running half throttle and letting the engine cool down every hour.

This is the best channel on this topic. Now fight me about it.

Absolutely LOVED this video, well put together. Awesome personality! Keep it up!

I like his videos. These are probably the best sets of videos. General knowledge

Fine job... you always have really good Info to share and it's much appreciated.

man I love your videos! I just built my first bike and your videos have saved me from probably weeks of trail and error and countless headaches. So thank you for all the knowledge and being halairpus

You're helping us a lot sir. Very comprehensible explantation. Thank you for your effort.

I run a b6hs ngk plug and after replacing my throttle cable (it was too short after adjusting for crappy hp carb when swapping to an nt speed carb) and changing the jet to a 78 jet is running great. Got a 40t on the wheel and a 10t on the motor it's getting up to 36mph and I can't be happier, it's my first restoration on my first gas bike and I'm officially addicted. You also do a great job on simplifying and explaining how to modify these bikes

Dude 1:17 that is definitly what I do!! This is one of my favorite motorized bicycle videos and channels!!!

Ive been building sleds since the 90s. Just getting into these bikes, plan to build one for my daughter. Excellent video.

Mr hughes, thanks for share all this great information so helpful about motorized bikes,&others topic, say hhello from panama republic, joe, thanks, continuye.

Really dig your videos! I have a 26 in. Haro mtb. W/ a Zeda motor. Lovin' this hobby! 50% fun 50% maintenance!

As soon as i got mine i ported it and....WOW!!! RUNS GOOD

Love your channel, Love you man. From UK

You make great videos my dude

My first bike build I was in it off the start. Wide open all day. It never failed .. sold it eventually but it was the most fun bike I'd had to this day.

Awesome, excellent information 😁, appreciate it, thank you

You are extremely helpful.

first good explanation ive found for the carb assembly! thanks for the encouragement to take the 30$ carb off my shopping list LOL

Very knowledgeable! I have a question about skirting the piston on the intake side. Does that actually help?

Silly dude, you’re awesome

the kx85 expansion chamber pipe i got was a major performance upgrade it sounds like a turbo spooling up and acts like it too its crazy

Another awesome video, thanks…

Top video!

Great information. Building my 3rd and never knew any of this. But on the the carb jets, it's the first set that comes up? Or?

Thank you so much. This is great info bud

The key to going fast with small displacement engines is the fuel. I was able to go 50mph on 49cc two stroke engine using 110 octane trick fuel in 1977. I figured it out when I was 16 years old. It’s not complicated 🏁🏁🏁

Hydraulic ebike brake kits are a great upgrade as the tectro's are meant for higher speeds and I don't replace them too often, about 500-700 miles depending on how aggressive I am with the breaking

if they had an awards night for best teacher of motorbikes you'd win 1st in every category. ive been bu io ling these bikes for a yr n a half. im still learning. i buy bikes that ppl have no idea how to fix em,so i grab them for $100 bux or less. i sand ,primer, paint,clear coat,rebearing,and grease,put togather from birth to re pairing of or replacing the motor and flip them for 350 to 500 . but i learn from you hughes. your an award winning teacher. ken.new port richey,fl

I just bought a f2 thruster exhaust a performance head a windowed piston and a reed valve and a jug to go with it did I make a good purchase

I i wished to take my 80 cc 2 stroke motorand put better bearing in what would i install i already have a high performance pipe and this week i will work on porting the intake and exhaust ill probably will b e changing the jetting im sure ive learned alor from u THANKS

I was wondering if you can tell me what's the best rear sprocket to use it seems like all the kits come with a 44 tooth is that faster than a 36 tooth for example does it make it run smoother can you tell me a little bit about the rear sprockets

The only thing I can really say after running mine is that the stock exhaust has to go if you do buy a better carb. While running a larger really expensive carb I did notice that I got better performance but it wasn't great because more fuel in means a better exhaust is needed to get the burned and spent fuel out.

I am a new subscriber, but I appreciate your content and I saw you did everything very professional and you seem like a good guy and forget about it love the Boston accent, but if you could give me your advice on, can I get a raise and head to the only ones I can find say 66 to 80 cc will that still fit on the stock? and what brand bearings would you say are the best? If you get time, I would appreciate if you could respond to this. Thank you again appreciate your contact you have a new subscriber forever.

I purchased a bbr stage 4 high compression head this is my first time building a bicycle engine kit I put the head on between the head and The jug I can still see the copper gasket and the head bolts there's a gap but it looks like it's sealed I have two gaskets at the bottom of my jug I don't know if this is normal is there supposed to be a small Gap I'm confused about it if you could help in any way I'd appreciate it thank you

i respect THE Men here.. Hughe.. the thing he said about the carburetor is so F true after 3 years (quarantine get me in to the hobby) i spent money in every carburetor i saw people use on the internet and every time i when back to the NT there is no way around on a china doll motor (just a porting to take the lips out of the intake and exust maybe but just that nothing else) keep your NT on people

Hi Love your videos.

G,day Eugene. I’m just wondering what Dremel attachments do you use when your porting out the intake and exhaust outlet please. Are they the orange and green coloured carbide bits or steel milling bits. I just brought a Dremel, I’m not used to what the attachments do. Thank you for your help I appreciate it mate. Take care buddy.👍

What is the best way to bring down the noise or witch exhaust silencer maybe a homemade one??? I'm downtown Montreal... Bad boy wants to ride his badboy bike...

I need a good high performance cdi like you suggest but my motor is a duel plug setup, any suggestions

I live about 2500' in elevation. I took my Phantom 85 V3 out for a test spin. Runs great but after awhile about 2-3 miles, it wants to bog down and cut off. That is because it's too rich, right? I've got jets from 65 up to 70. What jet size do you think is best for my elevation?

I’ve been running 40:1 for years and years in just about every 2 stroke engine I’ve had and I’ve never had any issues with it not oiling properly or wearing out prematurely!!! Infact it’s more than good enough!!!! The thing most people don’t understand is that 2 stroke motors are happier in the high rpms and they don’t like idling too much!!!! You end up with fouled plugs and clogged spark arrestors when you constantly run a 2 stroke engine in the lower rpm range…

Good video

I had a question, I don't see a reed valve on here, would it be worth investing in a reed valve kit for an 80cc and windowing out a piston to get better performance? Provided I did these 6 things on top of that first.

I digg dat *_Sushi_* T-Shirt!

How should I set the gap on the NGK plug?

Howdy Sir, I took your advise about jetting mt NT carb at 678 foot sea level. With a #65 jet and the groove clip on the pin set to the top groove the engine runs great. I do get a surge at top speed of 25mph. smoothest running speed with a 44 tooth rear sprocket in 19mph. Not too bad for a 1964 Schwinn Typhoon, Thanks again. you do know your stuff.

Dangit.I subbed to you around this time as you made sense out of all the ..stuff...being said about these.>Obviously this is 3 Years later.(Thnx YT). I did my plugs by Your scale and the engine did Great.Thank You.Never screwed with 'jetting'.I took a punch and tapped in the hole a Tiny bit as the plug was wet.Fixed it.Tan plug .(I checked before and after with 'torch cleaning' kit wires,and went down a hair)

Hi, I'm from South Africa, happy to have discovered your channel. I use my bike for fishing and tow a trailer, i sometimes find it difficult to start the motor by pedaling, i wish to fit a pull start, our local guys say the pull starts is crap and don't recomend it. What is your experience and can you recomend one that won't break the bank? Looking forward to hear from you.

I have an idea for ya. A video showing an engine stand build like you have in this video. I think an engine stand is something we all could use.

Very helpful. I just got into the motorized bicycle scene and this helps out a lot. Thank you

what are your thoughts on window pistons? i’m thinking abt getting one but i don’t want to wreck my bike

Just had to order a magneto seal for my baby bee today, hopefully I don't end up having to change anything else for a while, except for maybe a new flex exhaust with the expansion chamber. A little less effective than the fat belly, but Itll look great and should work better than the stock for my beach cruiser setup

I have a two-stroke engine but I do not know what kind of spark plugs do I use it has a weird number I think what kind of spark plugs do I use

So have been riding these bikes over 10 years worst thing is the exhaust pipe vibrate sluice wears out the bolt hole just makes it louder all of a sudden I have a fast high RPM dried reducing the adjust Gable and throttle body. Help. Please. And to me coaster brake is great for stopping faster

Hey Joe can you possibly do something on a 47cc pocket bike off-road atv motor install on mountain or bmx style bike plus rear sprocket options / install been waiting on motor 3/4 weeks it's actually 12days late today but anyway it would be helpful and appreciated on build

GRATE SHOW

I have a ngk B6S is that the same as B6HS

Nice video ..on the wheel you recommend does it fit a tire size of 1.75?. Also I would like to see a video on this if possible explaining more details . Thanks

It would be awesome if you could do step by step video on building and tuning an awesome performing engine. I'm a visual learner :/ :) . Just bought a motorized bike and took off the carb filter seems to run better without it. Any who, videos will so helpful on how exactly you would do these steps! 👍

How are u Eugene? I just have one other question and that is can you use sandpaper on the inside of the barrel? (Bore).. I have some burrs that are on the inside of the bore at the transfer ports and intakes, but I am too scared to use the Dremel in case I scratch the cylinder. Am I able to use some sort of sandpaper maybe 600 wet and dry to take the burrs off or does that affect the coating inside the bore?Thanks for your replies they have been very helpful you have been excellent thank you mate.👍👍👍

You still have carburetors for sale? need one for a 100cc

Hey I have a high performance head like the one you showed. What size spark plug fits it. I’m having a hard time finding the proper one. Thanks

Hi Eugene, i’ve been looking at purchasing another 80cc kit. However I’ve looked and a couple of different models and the specs of the motor are exactly the same (identical) but the maximum speeds are about 10kph difference. Why would that be is there a speed limiter on these motors? If not am I able to increase the speed with my racing head and racing carburettor that I have. Thanks very much. Take care buddy.👍

I've rejeted the stock carb to a 66. readjusted the "E" clip leaner, top notch. Starts hard. just crack the throttle the engine will slowly wind up. The engine seems to clear it's self at a very low throttle, I can feel the raw power come up. If I add throttle it blubblers, come back off the throttle and it will clear again and run with power. Smaller main jet still? Then richen the needle setting? Zeda engine bottom, compression head, hotter ignition and plug, the big box reed, stock NT carb. 4 inch tube between the carb and the reed box.

Good Morning Do you have any suggestions or thoughts for a exhaust pipe. I have a GX7 29.. The high compression head won’t allow a bolt on.. The banana pipe won’t clear the front wheel... SBP ES02 is not available.. Do you have any suggestions or do you have one you can sell me??? I’m in Cleveland Ohio...

Thanks for this great video! I’m getting an engine kit tomorrow, I have 2 stroke synthetic oil. The engine has not been used at all. Should I go 16:1 during break in. I’m confused on why everyone keeps saying 16:1, then some people say 20 or 30. Then you say 40. Thanks!

Im brand new to this hobby, your channel is awesome!! I subbed instantly. So im not really concerned with breaking the sound barrier. 35 to 40mph is perfect. I live in Pennsylvania (Johnstown Pa) i was given by my buddy a BBR 80CC, It runs good. It has the 3 prong plug and he was running 16:1. Whats your recommendation on the mix and plug i should use?? Thank you for any help

plsssss tell me you know were i find jeting for the bofeng carb? thx and good work

good video and ur very funny

Careful with these motors. I don’t know what it was but my friend’s caught fire while riding. There a vid on my channel but it’s not great. Make sure nothing is loose or leaking

i know im getting to be a pain in the ass but my question was can i run a mag on the back and a hub front spoke without it being to strange .I assume its a wider rim on the front compared to back mag size thank for your time Daniel Rose

Can I add a high preference head on a 100cc motorized bike and what is the best spark plug for it

In Alabama, building one for each of my kids. Lookin to do something a little faster (bc daddy has to be in the front of the pack). Any suggestions on what engine to buy "off the shelf" that would be a great starting point other than the typical China dolls?

I was curious as to how I can rejet a carb without buying a new jet, I’ve heard that I can do it with solder but I’m not sure if this is true or not. Also, how can I install a key ignition and which key ignition would you recommend?

I completed my first build , the Bikeberry BBR tuning 80cc 2 stroke about a month ago and was somewhat pleased it runs good , hit a best top speed of 34 yesterday. I said its time to upgrade so I ordered theFVrittolong long exhaust pipe muffler, a high performance cdi ignition, and a 44 tooth sprocket set. Will I get improved performance with that exhaust. I t just looks so much better than hanging down in front of the motor

I bought one of this little 50cc engine and installed. Having hard time to started and it doesn't idle. Only runs at about 50% throttle and up. Cheched compression and have 70 psi. What can I do to bring that up little higher? THANKS!

Bro I installed one of those racing heads from Amazon on my pk80 wild cat, gained 5 more mph But engine got hot then I looked at the piston an was burnt , I also broke a strut on the cylinder bolt trying to tourqe it , now I the stock head with 3 bolts lol, going to buy new cylinder struts . An better cylinder an piston , note I tired even running rich on that head , maybe was leaking air causing it to over heat , fuel ratio did help but not enough carefully with them after market Amazon heads , I know they make one for my wild cat going to try that In the future thanks bro

I like your style bro. I wish I could apprentice under a small engine guy such as yourself. 460ft is my current elevation... I've gathered I should clean up the ports, check elevation and jet accordingly, change to a 36 tooth sprocket, modify the exhaust(or chop it off🤷🏻), add a spring tensioner, and get a better intake manifold(or chop it off🤷🏻)... Did I miss anything lol

I ordered a banana exhaust for 20 bucks on ebay. I wonder if that will up my power? I noticed the exhaust and muffler that came with it was pretty lame.

Hello! I have a question, i have lot of 50:1 fuel and i just bought new 80cc engine and i dont feel like mixing new fuel. Can i use 50:1 break in?

Running 50:1 in dead winter it's runs like a champ

Any ideas on 4 stroke upgrades for the 49cc little china motor? Thanks

Anyone curious about the death of the gentleman in Colorado should know that it was NOT the fault of the bike Hughes sold him. The reason he mentions safety and the importance of gear is because there are people that can hit you and send you flying off your bike to your doom, which is exactly what happened with the bike he sold. I could only dig up two separate incidents where a motorized biker died because they were both launched off their bikes due to impact with an SUV in 2019 and 2021 respectively. Get yourself some good brakes, wear your dang helmet, be aware of your surroundings, stay sober on the bike, and you’re good to go

On the Amazon sealed bearings. Do I still need to use the oil seals?

Hey question for ya! I see these motors say they can fit on 24-28 inch mountain bikes. is that true? Mainly a 24inch one is the target goal. 80cc china kits like off amazon

Only rode my brand new motorized bike about 5 MI turned it off with the kill switch. Ever since then it won't start now. Any helpful advice?

Thank you so much. Anyways, I’m 14 and I nearly got killed doing 35 on my motorized bike thank god I literally got no broken bones or anything. Just very minor bruises

the kit told me to run premium 97 gasoline mixed with 16:1 oil or something close to that, with my stock kit, but since u mentioned the gas mixture that is recommended is wrong, do u think premium 97 is necessary? My weedwacker uses 87 with a 40:1 mixture and it would be much more convenient if they both used the same gas

What do you mean by putting a smaller jet in? Do i adjust it? Or buy a different one? Thank you

where r u located?

I'm sorry about the kid in Colorado, even though that's not your fault you must still feel some kind of way about it. It's like this, if you've never ridden a bike at high speeds and felt how easy it is to lose control you probably wouldn't want to be much faster than 35mph anyways. Been 30 mph on a 16inch bike, terrifying lol!

Any opinion on pennzoil tcw3 oil?

Will a NGK B5HS spark plug run just as good?

Extra oil can help seal the combustion chamber to make more power.

My kit came with LD Z4JC with 3 prongs are they good or junk ????🤔🤔 🇨🇦

Hey, my bike sounds like it is four stroking sometimes how do I fix it?

What do you say 'bout them reed valve kits? Any worth checking out? Everyone states reed valves improve the 2 strokes on the low end and make them more (fuel) efficient, but never heard anything about them on motorized bikes...