How To: Installation Guide - 79cc 4-Stroke Bicycle Engine Kit 

They did a decent job for such a short tutorial. Ive built several bikes and this is much better than the manual that comes with the motor kits. The manual is pretty decent for being written by someone who is obviously not a native english speaker, but this is pretty good.

14:00 1560 1759 1593

That's a great suggestion and we will definitely look into it. We previously only focused on small hobby engines and engines to fit within the regulations of racing circuits. This is our first venture into larger motors and it has been more successful than we anticipated, leaving our inventory completely empty within the first few weeks. To keep cost low for our customers we buy directly from manufacturers, and if we can find a manufacturer we trust we will gladly carry larger engines.

That would be GREAT. I was looking at Honda engines again after I watched your video, and I really think they will fit inside a frame if stripped down, BUT that means we'd need to CNC some parts like you have here. I mean you guys, hands down have the market cornered and the skills and know how down pat, so if you did move to larger engines, I know I'd buy a few for my bugout bike "FLEET" so to speak. haha If I could make a suggestion or two, maybe build a few and take them to preppercon.com/ Some things that would prove useful to that group of people are accessories in the form of having the engine with a start alternator combo and it can recharge batteries for cells, flashlights, radios and whatever, and a 12vdc power outlet or better yet a cigarette lighter and sell it as always having a way to make fire on board. I would also show it in the fast mode configuration to get some where FAST, as well as the power mode for hauling more weight at a slower speed. I would offer larger fuel tanks as well to have a decent range, and have the fuel tanks with attaching points so people can hang their own gear off of the tank and it is not just a fuel tank. Maybe even have an easy access spot on the tank for a place for a squeeze bottle of water so you can get a drink on the go. I could go on and on, but you get the idea. I'm really happy you're thinking along the lines of larger engines, because I know the big thing is always POWER and most look at these small engines as being toys and nothing serious to bet your life on. Keep up the great work and ideas.

wjf213 a 120 Honda will fit most places a 79cc harbor freight will my last build was a harbor freight 212cc. From experience with 79cc and other motors that is far from the best setup and can be very dangerous. The best setup is to mount to the seat tube. The only good thing about that mount is price. If you have access to even a Mimi Mill you can build a much better and safer mount for cheap .

Another thing that, that mount is good for is say a 5hp Briggs

Hi Scott, Thanks for the info. It's much appreciated. I'm always looking for any and ALL info from everyone who has even the slightest experience in this sort of thing. I'm looking to build 10 bikes that are exactly the same that we can use in emergencies and even just to ride for fun once in a while. So, let me get this straight, you installed a 212cc engine from Harbor Freight onto your bike and it's about the same size as the 79cc engines? Can you explain the engine mount in a little better detail please? I wish Bike Berry had a system with 4 stroke engines that are 5 to 8 horsepower. I like the Honda GX engines because it looks like they sit at a 45 degree angle and would fit inside a lot of bike frames unlike a normal horizontal engine would, with the cylinder straight up and down. I mean the GX120 stands 13 inches tall but that includes tank and air cleaner. Remove those and remount them, and I think you could really have a nice low profile set up. I don't think I'd go over 8hp or the Honda GX240 simply because I doubt the frames are really designed to take that kind of power and stress put on them, but what do I know. Stripped down, I think the GX240 would be around 13 inches tall and still fit in most frames, plus it has electric start and as much as an 18 amp charging, which could be very handy for recharging all kinds of electronics in a grid down situation, while riding around. For me running around on flat land here in the south, 5hp would be plenty but in serious hills and mountains I could see going with an 8hp if speed and power were needed but if not, I'd gear down the 5hp and give up a few MPH on the top end. I'd really be interested in anymore info you want to share. Thanks again Scott.

great tip for creating a pilot hole.

Yes and government MEANS MIND CONTROLL btw so STOP VOTING and

You have one advantage over a two-stroke, you can use forced induction. I’d love to see one with a blower and fuel injection.

And cool better ..as a motorcycle 🏍 engine ..

Government mandates the sole supply of ethanol laced gasoline, so not much alternative there.

wingerrrrrrrrr we have both ethanol and non ethanol fuel in the U.S, but okay and be safe. 👍

@@foxtrottango8745 You can wash the ethonol out with water you ad water and shake dont remember the amounts but then let it set and the water and ethonol settle to bottom have bottom tap drain out wter and you have clear gasoline

YES! I remember go -karts from that era, using TWIN McCulloughs. They were the engines of choice back in the day. Very RAPID transit along with their famous super chargers!

..yes and government MEANS MIND CONTROLL btw so STOP VOTING and

You think aichi did a good job by not putting grease on those bearings?

5 months later how is it running?

get extorted every month on insurance whether or not you use it on the road. insure is 100$ a month on a bike and 150 on a car its a rip off

@@RustyShakleford1 How do you spell.....REVENUE ENHANCEMENT?

Exactly

I caught that too wondering if they put on after lol.

some clutches have built in keystock I've seen

How do you put the key stock back in? It doesn’t fit in mine? I’m thinking that’s why my clutch is having problems

@@hippiepunktristan7796 not sure about these motors but many keyed parts the key must stay in the key way and the part installed over it. Also some have recessed set screws that push directly on the key, meaning if the scew is tight it will block the key going in

The keyway is in the clutch. You can see it at 8:21

Great suggestion!

Every kit throttle ive had has been crap other than one i got with a staton inc friction drive. That one used a brake lever as the throttle. I exclusively use brake levers now. I have the throttle on the right side and i use a dual pull brake lever on the left side. I have one drum brake wheel on the front and will soon have one on the back too. It takes a little getting used to for turns. Ive only dumped myself once and that was because i was being dumb and not paying attention at a stop light and i tried to stop go and turn all at the same time. My shoulder still hurts. Dont do that. But the lever throttle is awesome. No hand fatigue. At one point i had a clutch lever for the two stroke on one build and it was like having a cruise control at just under wide open because of the lock on it. Im probably gonna try to get another one like that.

id want a twisting one like on dirt bikes

Im feeling a ripple in the force . I sense a new and at least a fresh direction that describes and seperates the hazards and product failures connected to motored bike in a box controversy . So just for the sake of gittin.past everything that has been kicked around. Let us ponder just. One brain freeze that all of us allow to blow free and easy without a worry on our completed and engineered to asian communist labor

?

@@thomashamilton8999 wtf are you talking about son? LOL

great suggestion!

If I was you I would make my own base plate and weld it in. You would add strength to the frame. Then I would actually weld in a chain tensioner bracket just bolting one on will rotate from the movement of the chain.

In this case with the engine being on a bicycle the air will be flowing by the head while riding. Doesn't need the shield

@@MarkJones-qn1eg Nope most engines and very likely that engine have fins in the flywheel which are actually a fan that blows air thru the cooling fins and guided by the shield (s) which OP removed with out that air the engine will run hotter than it should and have a shorter life. Shield should be installed " the air will be flowing by the head while riding" is not going to do the job.

@@chriscraft4236 this isn't going to be used for its original purpose its going to have air flowing over it, it will be more than fine

Nope it going to run hot , at best performance will not be optimal at worst it will live a short run life and not be as good as it could be. Just plain shoddy workmanship 😢

@@chriscraft4236 the original perpose of this engine is a general purpose engine (a predator 79cc clone) non moving for pressure washers and stuff like that but this bike is going to be traveling tons of air will move over the fins it will stay cool and will not affect the life span

Ford

Bkn kite dh setup

Hwo many

Motorized bikes engines are legal in all states

@@decoylol Legal, yes. I know that. Legal to operate on sidewalks and bike lanes on roads without registration? No.

@@thatrecord5313 its fully legal to ride on the streets where i live

From "live free or die" to this.

Honestly I refuse to adhere to engine displacement regulations and technicalitys.. i would move if I lived somewhere that the police are all up in my business like that. I'm a real American

The pleasure is entirely ours. Thanks for the support! We'd love to see your build!

14:00help

They aren’t bad, but the hardware I got with mine was soft and cheep Chinese garbage. 40 bucks and a trip to the hardware store later, and no more fear.

this is more of an advertisement for a specific kit as well

I agree. These guys are obviously not mechanics, so maybe they should pay project farm to make their instructional videos and just stick with selling kits. I noticed that the new pedal crank went in with completely dry bearings. I don't have time or interest in pointing out all of the other mechanic fails in these videos, but that was the most glaring in this particular video.

PF's engine kits were cheaper too!

This is a completely different engine ya idiots

You got to realise, it's an advertisement. Pf is testing engines, not selling them. He's a great reviewer

We agree and encourage every rider to practice safety riding. With suspension frames, be sure to use a spring tensioner when using a suspension system to prevent chain slipping.

Rule one when riding take it easy..dont speed up..always aviod potholes and sewer i had seen a guy went about 25mph hit a sewer no motor still got banged up good because his wheel hook to the open part of the sewer..

Completely agree. Thankfully all of the bearings came pre-greased.

BikeBerrycom they often do. Idk I'm probably going to grease mine up pretty good cause they are going to spin alot faster alot longer.

DJCryptoKnight - Dead Channel even better would be an actual cvt set up . the ohv 4stroke pull start mtr. is a huge improvement over dropping the clutch while petaling like crazy. and you can be in public and not be smelling like 40to1

No argument at all. Many bicycle frames are not designed for the high speeds that these engines produce, and the few that are made for these speeds are still susceptible to the constant vibration of the motor. We encourage everyone to practice safe riding behavior and to do regular maintenance and inspections in order to reduce the likelihood of an accident.There are accessories that can absorb the vibration greatly, but it is still not 100% efficient. We encourage everyone to pick the bike that works best for them.

Thomas Hamilton hey man I feel you but do you think it will be safe I put it in a razor mx650 electric bike

Without major modifications to the bike, most of our engines would not fit. Razor's electric bikes all have small frames that would not allow proper mounting of internal combustion engines.

BikeBerrycom it looks bigger than that frame you have there

We may be wrong but from our understanding most of razor's frames are mini replicas of full sized vehicles, the mx650 being a mini bike intended for children. The Micargi frame used is a standard 26", intended for adult males.

I though that Roger, but then assumed it was a demo install. I expect they would grease it up properly for a real ride test. Some form of thread locker too...

I'm sure they are doing a instructional video and trying to stay clean......could be wrong but any moron knows you must grease the bearings

Frigglebiscuit I’d only need the “AdApTeR” lmao

Stay tuned for more content in the future.

@@bikeberry biggest lie ever told

@@blazbohinc5735 no lie, check out our latest series.

Can u read dumbass?

@@Youlikecrap s.o.d.a!

Thats true i think since they are carbureted it would be best to use ethenol free gas which is harder to find these days

@@kevinlong7515 I have been using 87 octane (10% ethanol) in my MTD Briggs engine and Tecumseth 2 stroke engines for 16 years now, with ZERO problems. I do use "StaBil" in these engines during "off season" as well as in a 12 year old 2 stroke MTD weed wacker! The fuel additive is ESPECIALLY important with the gas/oil mix, the ethanol causes the oil to separate from the gas. Using "StaBil" allows me to use 6 month old gas/oil mix with good results. Fyi, all three of these products are carbureted.

Sorry for the inconvenience, these are flying off the shelves faster than we can keep them in stock. Surely our new best seller. Check back next week as we are currently restocking our inventory.

How long is it gonna take for u guys too restock

Banks Gaming they had some in now last I looked

ebay.

Go to Ebay!!! Ebay all the way!

Jackshafts are rarely worth it, and especially with this engine size you are sure to constantly snap the smaller gauge bike chain usually used for the pedal drive

Lots of different mounting options available. We also provide a mount that greatly reduces the vibrations by using rubber isolators. The mounts provided with this kit are the most secure system we could provide without increasing costs.

Wat u put the 212cc on .i can put mine on a occ chopper off set shaft too much to be rite so im making it three wheels i guess

The bikes to which you refer Mobius were made by the millions in post war Europe, and as you remarked were for utility only, just to get folks mobile. They were still in vogue in the UK in the 1950's and I saw plenty of them as a kid. In fact for a short period I had one, a Powapak which was a friction drive to the rear tyre. It blew the head gasket and I had no clue how to fix it so it got dumped. I was 13 I think. Wish I still had it now mind. I'm building a chain-driven one at the moment and there's videos around on RU-vid somewhere. I'd like to build two but can't get the wife interested. Seemingly everyone uses those kits available on Ebay, but I went a different route, using a pocket bike engine. Petrol gas engines are still legal in Australia provided Mr Policeman can be convinced it's only 200 watts if one gets stopped. Not interested in speed or making a lot of noise, so softly softly...

I'm sure they're sold somewhere, had a friend's parents old peddlebike that had one, this was early 2000's

Not much to figure out, everyone's got an electronic cyclometer for bicycles to measure speed and distance.

@@wingerrrrrrrrr Yes a normal bike speedo would work, just need to run a wire down the fork for a Hall-effect sensor and put a magnet on a spoke.

For fuel gauges, some fuel caps have one built into them, they just use a float to push a needle up. Not sure how good they'd be or of they make any for those gas tanks

InTheFleshInc a 4 banger is a four cylinder car engine u meant r stroke

I agree only use what you need overkill gets people hurt

Vespa

No bearing grease either

It goes back into the stock Air box. The miniature cold air intakes look cool no doubt. But I wouldn't be surprised if the stock air box perform better because it has that blow off valve going right back into the air box.

It is for the guide pin in the throttle grip, as described at 11:50.

Very soft engine components, so don't bother.

Were sorry if you're having difficulty, Give us a call if you need any assistance with your kit (800)317-0479