Also with the 2 stroke, they love to be revved and I noticed you gave it little revs and let the clutch out way too fast when doing off the line. So learning how to better use a clutch would probably help the performance

I have built many 2 stroke and currently on my first 4 stoke build. 2 strokes and definitely budget friendly and tons of upgrades, but more maintenance and 2 strokes are LOUD. My 4stroke goes just as fast stock (35) and its quiet and smooth! My opinion. If you are looking to have fun buy a 2stroke but to get to work, get the 4stroke

I'm watching this video because I'm getting my first 2 stroke soon I can't wait for it to arrive.

Thanks for this! I am partial to 4 stroke, mainly because I like the sound and no mixing fuel. Maintenance is also a factor. The cost is worth it to me. Again, thank you!

4 strokes are convenient and easy to ride but 2 strokes in my opinion are more fun because of the Manuel clutch, and when tuned right the are really fast

I've noticed some of the 4 stroke kits try to sneak in the same price but leave out either the motor mount, the wide crank set or I've also seen BOtH left out and still like almost $300! So, be sure to pay close attention to what's included in the kits!

One option that's often overlooked is the BT80 (bullet train), which is an electric start 70CC 2 stroke with a 12V battery, oil bath clutch, and a charging system. Not only are they a bit more powerful than the 49cc motors, but have a full electrical system to wire up a headlight, turn signals, brake light, electronic speedometer/tach, etc. Lots and lots of possibilities there.

If I ever had one of these, personally I'd prefer the 4 stroke. It might not be quite as quick, but it's easier to maintain, quieter (I'd rather not have a noise complaint) and generally more reliable

2 strokes are more fun, fast, and loud. 4 strokes are a bit slower but generally easier. Depends on what you want.

Thanks, I miss your bike builds. I appreciate everything you upload tho.

Excellent video, your visuals explained everything without trying to talk over the engine noise .. Well done!

I was digging through all my bike stuff and found an old Indian frame I had. Put a 4 stroke on it. Fabbed up my own motor mounts. Only issue I had was the exhaust interfered with the frame. Easily solved by heating with the torch and bending it how I needed it. Started out with the stock 44 tooth sprocket, and the bike didn’t really have any legs. Changed to a 40t, better, but not quite. I’ve been running a 36 tooth and it does great. I really don’t want to be going over 35 on an over 100 year old frame. Matter of fact, I couldn’t keep those old rims tuned, so I put a set of worksman 11 guage spokes wheels on it. It’s great fun and I ride it to work every day, about 15 miles round trip. Now the weak links in both of these kits….. The rag joint. They’re ‘ok’ if you set them up right. Spend the money and get a hub adapter. The chain tensioners are garbage and dangerous. I’ve seen and heard of too many of them coming loose and ending up in the spokes. For the 2 strokes, they make a spring loaded one that fits on the gearbox. No such option for the 4 stroke. I found my best option was welding a Chevy small block alternator bracket between the seat stay and chain stay. Strong, cheap and looks better. I’ll be looking into a torque converter or a sun clutch soon because the centrifugal clutches are the weak link on the 4 strokes. Great video. Just remember everybody, ride like you’re invisible, because you are.

79cc 4 stroke phatmoto guy here. i love my 4 stroke for commuting. a 2 stroke to gear faster n rip on the weekends be fun too.🍻

Excellent comparison for the 2 vs 4 stroke engines. They both have their advantages and disadvantages. I have been building Motorized Bikes ( AutoCycles) for six and half years and have 5 in my garage and working on the sixth one now (to be completed , tomorrow, Sunday 26th)., with a further two in my lockup. They range from the two old ones, Humber Cycles, to 3x 66cc 2 Strokes, one 43cc Weedeater ( weedwacker in your part of the world) in a folding commuter cycle. Two 4 strokes, one 39cc and the other 49cc same as your engine. The 39cc is side mounted on the left side at axle height.

This was very well done, very informative, thanks, will look for the next.

Great video! Keep up the great content.

Probably the best comparison of the 2 and 4 stroke engines...helped me a lot!!!

What a fantastic video 👏🏼 I’ve been building the 2 strokes for 10 years now. Now considering the 4 stroke, I’m just curious 🧐 this was a great overall view of exactly what i needed to know. Thank you

I thought this was a lotorweek show for a minute!! Well done!

Awesome comparison vid!! Thx

This is the best video comparison anyone has ever made.

In my experience the two stroke is louder, has more exhaust and there is more power at higher RPM. 49cc and under is street legal in some places.

I've just fitted the 4 stroke, although I have some issues to overcome. The air filter has to be changed and I'm going to have to bend the exhaust more or cut off the bracket and re weld it so I can mount the exhaust. The 2 stroke is notably smaller.

Wow nice informative video great work

good video very well put together

I just love your video and I like how you're not biased you don't voice your opinion you just show the product what it is how it performs straight-up just too products and not your opinion I love that your video is simple I like how you plainly stated that there is different variations due to user it really help me decide on what versus what thank you very much please make more videos some videos i.cringe just to watch their videos either they can't narrate properly or something wrong with their voice or their language of their English watching your video was quite Pleasant

Great video Mark

Nice video, I've dealt with both and even the 79cc predator. I eventually just went to the predator 212cc. Completely different and it changed the whole bike.

There's much more upgrades you can do with both engines, especially the 4 stroke to make it better. Other than simple upgrades such as the carb or exhaust, if you put the work into it you can do the insides of the engine as well and make it preform much better. That applies for both engines. Also the sprockets can be upgraded to a adapter clamp and can be adjusted to make sizes.

Wow great comparison video

Im sold on the 4 stroke .Quieter ,runs just as fast , no fuel mix why not hey . Great comparison mate , appreciate all the effort and edits great work

6:19 26kg 2 stroke, 29kg 4 stroke

Well done video! Thanks for posting.

Love ur video. No bs, right to the point

Video is educated to me. Awesome and Thanks

My first build was a 2 stroke I got off of ebay. Cheaper to initially set up, but high maintenance with low quality parts. Ultimately it didn't last. For my second build I went with the 4 stroke. I will never run a 2 stroke again. I cannot believe the difference. Every single thing is better about 4 stroke.

I had a 4 stroke, sadly it was stollen, and aside from the transmission being messed up from the only issue I had with it was gas getting into my oil pan.

Great video!

the only REAL performance mod I've found on the 4 stroke is replacing the stock carb with the 2-stroke NT carb. Picked up a few MPH and better midrange power. The stock box muffler (on the huasheng) isn't as bad as everyone makes it out to be. The carb is the bottleneck.

Great video! what is your personal favorite between the two?

Great comparision. I would like to build a 4 stroke. How heavy are would these bikes be? 2 stroke vs 4 stroke?

I live in a pretty hilly are, and I would like to know if the 4 stroke torque is comparably better for up hill driving compared to 2 stroke.

Awesome job

Now this is how you do a side by side comparison

Hello from Romania, one question for you ... Would you prefer more a 4 stroke kit or the 2 stroke ? I'm about to build one and I have doubts about the 4 stroke and the clutch issues ... And for the 2 stroke I have doubts about the noise ... Could you help me out with a suggestion ? I enjoy riding on hils and valleys ... Which one would be better for me ? Thanks

Great video! Simple solution, get both!

Excellent views . The 4 stroke is the best .7/31/2021

How did you get the brakes to work with the sprocket? I tried on the Hyper and the brakes wouldn't work too well and when you pressed harder they kicked the pedals ..

Ok, being a newb, ive got a couple of questions..... 1. Why doesnt the 2 stroke have a pull start? 2. Do both engines use a centrifugal clutch? I currently have a 4 stroke and love it. Adusting the valves, rejetting the carb and advancing the timing 2°, (also doing your clutch spring trick) and im doing an easy 30 mph on dirt and 37 on even pavement. And i weigh in at 220lbs! Whats your theory on exhaust? Straight or keep the muffler?

Informative Video

Good video but the 2 stroke can be hot tuned after the carb is set to full drive it needs an adjusment when hot

what transmission upgrade is good for the 49cc 4 stroke? best carb? shifting kit?

Read a few articles on this subject, each one said the 4 stroke can run longer than the 2 stroke for about an hour or so and the 2 stroke for about 30 minutes before over heating. If you have the budget to mod, 2 stroke. I prefer 4 stroke, regular gasoline and longevity is the deal breaker.

Got to love them hyper bicycles I think that's what kind it is LOL

I like this idea better then my moped. 😊💪👊

Who is the best 2 or 4 stock engine kit.please tell me request.

I´d take the 2 stroke for sure!

nice, this was one best videos of 2/4-stroke motors that i have seen. 4stroke seems to be better chose even if it cost more.

I have an extremely modified 2 stroke for fun and a 4 stroke for general use

can you please provide us an affiliate link for the bicycle used in this build? Also, what is the gearing on this bike? Is it a fixie, a 7 speed, or 21 speed?

How long can i ride on a 2 stroke engine? 80 % speed for 30 mins is safe or willl the engine overheat and damage?

Is the sprocket the same on both? I am replacing a 2 stroke kit with a 4 stroke kit and my chain hasnt stayed on long enough to ride

Nice builds! Is a 49 cc 4 stroke good enough to also carry a passenger? Lmk any recommendations plz!🙏

Worth it I love mine 2. Stroke

You also need to take into consideration what mix he was running in the vid for the 2 stroke, I run 50/1 in my bike and I can tell you it would put the stops on both of those bikes

the trouble is with synthetic oil is its expensive, so i use mineral oil, any oil, if u use gearbox oil or used engine oil, just be sure to mix it well with petroleum spirits before mixing it with fuel and always keep the tank moving

This is what I was looking for. Now can we get 66cc vs 79cc.

Hy. Is there a way to make a motorized 50cc setup demountable from the frame and put back in like 5 to 10 minutes after airplane transport?

did the hyper cruiser come with a 3 piece crank assembly or was it a one piece?

You forgot to mention the bigest performance mod you can do to the 4 stroke kit... Exhaust. The stock exhaust on both kits are crap. The 2 stroke would benifit more but it still makes quite a difference on the 4 stroke.

I built a 2 stroke and 4 stroke but sold the 2 stroke. I still ride the 4 stroke almost 2 years later with no maintenance but oil change and carb change cause I let the gas sit in the carb . Carb was $22

Oh! YT comments about motorized bikes Well the 2 stroke's instruction sheet always says to install the engine on a "V" framed bike for best fitment. It pretty much locks the engine in place which you can't say about the cruiser frame. Also that 4 stroke gearbox is 3.2:1 gearing versus the 4.11:1 on the reduction on the 50cc 2 stroke. Fairly big difference in how either bike will climb hills You would be better to buy a 54T sprocket for the 4stroke to even this reduction ratio. Also note that the "5G" type Glimer belt transmission on the better quality 4 strokes last longer. All of the 2 strokes have eccentric output sprockets and I noticed the 2 stroke in this video was 'warbling" because of that off center sprocket. This has been an issue with the 2 strokes for years, it's what eventually damages the left side spokes through the rubber clamping ring rag-joint. The 2 strokes also benefit from a smaller main jet and running 32:1 fuel : oil. Remember to grease your primary gears every 300 miles or so..

Thank you.

It would seem the 4-stroke would benefit me better... I need it for going in and out of town.. it’s not start and stop it’s more just straight line and the 4 stroke seems to have a higher top speed...

In terms of power, the 2 stroke seems to have more horsepower, but lower torque, meanwhile the 4 stroke is flipped, which makes it slightly better for going up hills or pulling a trailer (not by much though)

please tell a location that that has a pull up pump that is non ethanol? .... pretty sure all pumps have some ethanol and up to 10 or 15% in summer months..... farm fuel is bulk order, not at pumps and has been for a good while....

Did you make a build video for these bikes?

I've been thinking of doing a motor bicycle for a while now. I'm aiming to build a sporty bike with as high power to weight as possible, seems like the 2 stroke is more ideal for my plans. Looks like I'll just get as light a bike as I can get, and slap as big a 2 stroke I can find on it. 😆

I bought a 2 stroke 80cc thinking that I would get better power but go the same results as you but I’m 60lbs heavier and I put the kit on a 24 inch tire bike if i were to do it over again I would do it on a 26” bicycle and gotten the four stroke I got the two stroke to save money but by the time I upgraded all the bad kit parts I paid more than what I would have if I got a four stroke and the carb needs to be cleaned Once a month or it gets stuck both on stock and upgraded carbs

MPGs of both? Rubber brake pads vs disc brakes?

What about travel distance? How many miles will they go on a tank of gas?

Could you put the link of where you got the 4 stroke at? Please

Watching this I'm glad my second bike will be 4 stroke but still the biggest prob is they still come with shitty little 2 ltr tank had to spend extra for a 3 ltr to find you can get a bloody 4 ltr so that with a 36th for now an a jackshaft kit later both th 2 an 4 stroke speed won't be an issue

What app are you using in the video?

Awesome video. But...you can step it up like I did. Got a similar bike from my in-laws. Got the 212 predator engine, torque converter, and a stage 1 kit. After some reinforcement at the welds, it does very very well for a few hundred bucks!

Muito top as duas parabéns

I had a GX35 4 stroke grass cutter engine bought it from the junkyard

Hello do you have a link for the bike that you used?

Gatta say, the 2-stoke sounds more fun. They both seem to perform about the same.

Can you use any type of bike?

2 mods for the 4 stroke. Rejet carb and remove intake and exhaust skirts. Covers 1/4 of both. Has integrated head so no milling for compression.

I used a 4-stroke weed wacker motor and attached a gear to the crank so it could attach to another gear on the crankshaft so I could just have direct power to the wheels using the already existing 21 speed for my mountain bike so it's like I have a transmission and I can go faster or slower without using the throttle and instead of using a twist throttle I used one off of an old snowmobile and I've been able to hit 45 mph with it with no issue my only issue was waiting for my dad to be free so I could use his welder bike crankshaft and to the weed wackers clutch and I just grilled some holes for some brackets to mount the motor and I was able to move the fuel tank up to the top bar of the bike Also i removed the pedals and put pegs on the front rim to place my feet and a one of those little generators that rub against the tire to power a light and i did a second to power a phone charger And thankfully I can just use the pull start with key ignition to allow electricity to go into the spark plug did I picked up from AutoZone And I also don't have to pedal it to get it moving

Almost not comparing Apples to Apples because the four stroke transmission is geared so high. With a 44 tooth sprocket they have no of hill climbing power whatsoever. But should do 35 on flat ground. Also that's a pretty nice engine mounting bracket for a generic kit.

There has to be a problem with your 2 stroke I installed 3 and went over 35 mph on 24 inch wheels(i gotta say I weight about 150lbs for 6ft tall) and I suppose the 26inches would make it even faster but most certainly will impair the ability to go from 0 with only the engine power(w/o pedaling)

u dont think changing exhaust on 4 stroke is easy upgrade as well?

We know already that 2 stroke wins but it will be fun to see how much better is a 2stroke

That intro music gave me Biaheza vibes

which one has better fuel economy

Not sure if this applies to motor bikes but on old 2stroke motorcycles and dirt bikes you usually get non-synthetic oil with 2stroke additives. Non-synthetic makes for a cleaner burn, as in 2strokes need to burn its oil. Also fun fact: rotary’s (wankle rotary) are technically 2strokes

I have a question aren't these like dangerous on the brakes ?