How To Install a 2-Stroke 66cc 80cc BULLET TRAIN Engine Kit for Motorized Gas Bicycle

[@brianroyer8375]

For almost $300.00 this is probably the best kit but I saw one for $150 that got 4 1/2 star rating with 36 reviews. Sure it didn't have battery w/ electric start (pedal start) but motor is same size and that statistic shows a lot of happy customers.

[@Mad-Duk_Machine_Werkes]

Fuel Filter is backwards-

[@darkwatersband]

i noticed that too

[@connorssmallengines6663]

Does it matter?

[@jimjensen1096]

@@connorssmallengines6663 Yes it actually does make a difference. There is an arrow indicating fuel flow direction, to reverse that would make the filter less efficient and prone to clogging.

[@bobbythompson4268]

Jesus neitha

[@thestalicho]

Make sure the masterlink spring clip has the CLOSED end in the direction of chain travel.

[@integrationofmanandmachine4714]

yes

[@kristianwhiskin1070]

😂😂 when he mentions about the battery lol, should see the spark i get when i connect the cables on my 54v ebike battery and that still doesn't hurt you

[@kinadafurry7353]

True lol

[@ajsalazar82]

I just bought mine and got the president day discount paid 238 total. thanks bikeberry

[@vinylexperience77]

Never tighten a spark plug as tight as you can on a aluminum head, you will strip the threads.

[@chrisparlow6282]

Marty Wickstrom Well said and so so true.

[@expautojv]

And the friggin gasoline filter is backwards!!!!!!

[@expautojv]

It'll blow the Filter Fabric up inside of the plastic instead of keeping it compressed like it would if it were flowing the other way around

[@punchogunter2362]

That aluminum head on the plug is durable but platinum heads are better and last longer and won't burn out as fast!

[@SilvaDreams]

@@punchogunter2362 He was talking about the engine not the spark plug... *facepalms* Besides they don't even make aluminum spark plugs, platinum is good but iridium is much better and will likely out live this engine and a few dozen more.

[@timostrom5710]

i build small 2t motorcycles as a hobby/way of life. my favorites are tomos, puch, derbi. i've seen a few "bicycle kits" in action, and they never seem to run very well. it's good that there is a piece you can buy to avoid bolting the sprocket to the spokes. that element of the design was always a deal breaker for me. 12v batteries can't shock you. good vid tho.

[@ABCDEFGHIJKELA...]

you can substitute a dull pencil in place of screwdriver when truing the rear sprocket. make sure the pencil has a broad, dull tip. wipe off the marks with damp cloth after each modification.

[@maccrume1771]

The kill switch is supposed to be the red switch and the current kill switch is supposed to be for lights

[@mikem5475]

Mac Crume exactly, these idiots selling the kit are obviously are just oblivious middlemen

[@diegodelapuente1665]

Hey, it sounds like you own one of these billet trains. The bike berry website does not talk about how the batter gets charged. Is there a generator in the engine or do you have to charge the battery externally?

[@georgioschitas]

Mac Crume Mr ni

[@sergiumaximov2121]

Do you know the correct diagram?

[@dw2843]

Yeah lol. These guys are useless. Also, they're suggesting that a 12V battery is dangerous to touch. Such morons.

[@JohanGavieres]

Awesome video. Picking up a bike today and ordering a kit on eBay to start this build. Thank you for a great video.

[@bobbythompson4268]

You’re welcome lad

[@terencekaye9948]

Add, put the washers and nuts on at the same time! Add, put spacers in between the hub and sprocket to get perfect alignment.😊

[@duskycotw8404]

This guy Really helped me out Thank you Bikeberry

[@markus3666]

Just bought one of these! Can't wait to get it in the mail!!!

[@bobbythompson4268]

How’d it go?

[@lccdan1]

I just bought this kit from bike berry and I'm in the middle of the install. So good so far...it looks like a good product. I not sure who does these videos but please buy some tools!! I have not tightened a bolt and a nut with an adjustable wrench and a pair of pliers since I was 8 years old.

[@yapandasoftware]

Nice engine kit! I'm buying one!

[@riverratmarine7259]

If u hook up the positive+ first the the negative "ground" - last you will get little to no ark when making battery connections

[@henrisivusaari1846]

It will totally explode

[@robertyoder5170]

could you guys make a video installing this kit on the BBR Tuning Complete 26" Motor-Ready Bicycle w/ 2.4L In-Frame Gas Tank (Black)

[@Ryanb895]

This kit dosn't fit that frame which is very disappointing

[@carmelitacalzado3745]

How can I get bt motros phone numbers i have 1 and it's not working can u help me out pleas think you

[@MichaelGrant_mlkgrant]

I think the electric start is awesome...

[@VirantRoss]

Michael Grant yes, im considering pulling the trigger on an engine for my bike but it sure is tough to choose and I feel scared. Its gonna be hell getting it together or be a piece of junk if im successful.

[@chokycoki17]

Welll That Starter Works Better Than My Honda City Starter :v

[@foxzerox1000]

How would you upgrade to a different exhaust?

[@daveleighton4683]

You have two spare wire positions left in the loom near the relay, a blue and a green. I'm sure you can use them for a light which will run directly off the battery.

[@bikeberry]

You are correct. Most of our product videos should be taken as a general outline, as most of these parts are manufactured with room for future custom modifications.

[@pascalezewulu7647]

Hello BikeBerry! Could you please upload a video on how to connect light and speedometer through the electric box?

[@jesusarmendarizjr3713]

We're do I connect the red wire from the engine too?

[@knoxmedia8260]

cool build

[@noeltheshemale]

that's pretty cool with the electric start. kinda bulky with the battery and the electrical box.

[@chiamingliu6746]

Wow, what a classic

[@markusgarvey]

I would fill the pedal crankshaft housing with Moly grease.

[@justinfewkes3535]

Mark Estrada when I was watching it I was just imagining there being a grease fitting as a joke

[@robertyoder5170]

can you make a video of this kit being installed on a BBR tuning motor ready frame

[@EllaBananas]

The shutoff switch doesn't work because you wired it up wrong. You wired up the light switch instead of the kill switch XD

[@Mr_Meowingtons]

LOL i seen that too

[@lucajo16]

can these engines take a light? Id consider buying one if they can take a light.

[@nostalgiaholic4874]

@@lucajo16 yes they can

[@johnsshed995]

why are you using an ajustable spanner and pliers on the fittings instead of the correct size spanners or sockets ?

[@bikeberry]

We want to show that installation is possible, even with a limited selection of tools. We always encourage the use of the correct tools, as they will reduce the likelihood of injury and damage to parts and will make the processes an easier task.

[@TheUncleBigBad]

@@bikeberry good answer.

[@cymoncyrado2879]

A nice disc braked doner bike would be suggested but anything other than just a rear coaster highly recommended.

[@eisengallardo5327]

That is one of my dreams😮

[@gregmorgan7281]

watched 5 videos before i finally found this one that actually shows how that damn needle valve on the carb goes....not one of the 5 others showed to line up that groove with the guide inside or how it works.....i had hell....when i first started the bike it took off so fing fast cause the valve was stuck....i almost killed myself......anyways just wanted to THANK YOU FOR A VERY GOOD VIDEO....finally,,,,,this is the one to watch!!!!!!!!!

[@heavystarch100]

Im sorry glad your ok but....🤣🤣🤣🤣🤣🤣

[@clydeusa6596]

Good vid. Only thing is never over tighten any spark plug. Could give you problem later

[@bikeberry]

#TrueFacts

[@jonathanmcnabb9153]

That battery seems so vulnerable mounted where it is. Also....I wonder if you can custom order throttle cable lengths for ape type bars....

[@freqeist]

you got a sub great video.

[@petermoran2204]

Nice job...

[@joezambrano696]

Hey buddy can you please tell me how to hook up the clutch cable nobody in their videos about the bt80 mentioned the clutch cable

[@thisguytrucks8844]

Best video ever thank you new subscriber.

[@scottfirman]

That carburetor needed adjusting,you could hear it bogging while giving it the gas. Fine tuning those can be a headache.

[@bikeberry]

Just as you said, "fine tuning [a carburetor] can be a headache," that is why we neglected to fine tune it for this specific install video. We are currently working on a video for tuning a carburetor. Stay tuned and check back for our new videos.

[@ronalddaub3789]

RC Hobbyist Extreme if you raise the needle to the next to highest position it always runs better .

[@michaelcox8478]

RC Hobbyist Extreme

[@trevorwall87]

I do wonder how it would run with a pocketbike nitro carb

[@the_true_moe6715]

If u tune rc cars, bikes should be nothing to you 😂, them little nitro engines are a pain

[@jaredshelton4718]

Well, you installed the fuel filter upside down but whatever

[@RexFixx]

Yea i saw one same guy in yt

[@logancurran]

ant the most important thing is that little metal piece in the fuel filter, its a magnet to catch any tiny metal pieces that. old have been in the fuel tank

[@hiramjr5790]

yall wrong in wveryway

[@xx2sloxx]

Why not leave the ground wire unhooked till you hook everything else up?

[@MachineShopChris]

I was wondering the same exact thing..

[@av4926]

Because then he wouldn't of been able to show you how the battery makes sparkles. Where's the fun in that.

[@riverratmarine7259]

That would be to easy. Besides makes him feel like a bad ass being able to weld

[@Zdendasoft]

Fantastic!

[@scottfirman]

A lithium battery from a drill wpuld work better and take up less space then a regular battery.

[@johnnyricketts1]

Good job

[@jondee3481]

to everybody who is installing this on there own USE BLUE LOVE TIGHT on every bolt and nut if you do not use lockight it will fall apart DO NOT USE red locktight IT will break bolts blue locktight everything lockwashers are junk and do not work that well if you have any questions I am a mechanic with many many years exp building custom bikes scooters and motorcycles just send me a message I am not talking any trash about the person who made this vid it looks like thay installed the kit correct just use lock tight on everything if you don't want to be walking down the street looking for the missing parts that will fall off good luck

[@MachineShopChris]

Great advice. If you do happen to use red lock-tite and you're having trouble removing anything, just apply heat to the area and it should break loose easily.

[@devynanderson7666]

jon dee what is the difference i am buying one soon and i would like to know

[@joblessalex]

Love tight, my favorite.

[@fredcdobbs823]

The red is polyester urethane, the blue silicon

[@eduardodiaz5762]

Listen to this man, Loc Tite That bike up the Blue One NOT the Red super strength one. Loctite is your friend, also change the Chain its garbage buy a HD 415H motorcycle Chain+ heavy duty Chain Tool as well.

[@ajsalazar82]

any tips or videos on drilling the hole into the handlebars? I don't wanna mess that up

[@riverratmarine7259]

Center punch where u want the hole to be and start with a very small drill bit and go slow with little to no pressure

[@mjmk555]

Is it compatible with the bBR tuning motorized bike frame yes I'm referring to the one with the built-in gas tank

[@glennallen5131]

Is there a way to put a transmission on the bike so you can use the gears on the bike and leave your disk brakes on the back wheel

[@FZ400R-UK]

Hooked the engine kill switch to the headlight switch instead of the big red kill switch provided..?

[@kxlucifer]

スコット it all on where you to wire it to.

[@darrenmillion1432]

Nice and all but I will stick to my Reg motor smaller and lighter plus there is performance parts.

[@Steveah91]

get a big 1/2 inch 20-30 mil axle socket and put inside that plate..over ur hub. like aligning ur clutch.

[@catburglar5764]

Always hook up the negative terminal on a battery LAST, and take it off FIRST. Basic safety rule.

[@jesusarmendarizjr3713]

My wires got burned from the exhaust, we're do connect the red wire from the starter too?

[@dannyoutlaw9919]

What do I have to do to get the new hp carb to perform as good or better than the nt carb

[@kayleegeers1827]

this a cool engine kit

[@mdanwarnicrh]

K aylee Geers

[@scabobble3912]

handle bars are upside down.

[@Bread45]

No just no

[@bojangles1623]

What kind of motorcycle oil goes in the clutch case?? Bike berry??

[@Fuellable]

Do not tight the spark plug as tight as you can. It will strip the threads in the head.

[@JSLRSMNW]

Yes, finger tight then half turn with socket

[@thejonesshield5038]

lol i will destroy anything with those torque specs.

[@currentbatches6205]

Sells new cylinder heads that way.

[@Carl-Romero]

Can this be installed on an electric bike that has its battery on behind the frame and the hub motor in the rear wheel?

[@Abdulsalam-jc6le]

very nice

[@Johnjohn-eo6mb]

I have the same engine kit what oil you use during break in period

[@danielcollins9307]

Can anyone recommend a good disc brake bike to use for this build?

[@jerryb1234]

I have two of these BT80 electric-start kits from 2017, and out of all my bikes, the BT is my go-too bike by far, mostly because I'm just lazy, but they are a much better quality engine than the China-doll 2-strokes.

[@philipaldrick5363]

OK, so where can I get a BT, please Jerry B123?

[@philipaldrick5363]

I have a Gomier trike and I hope to fit the BT in it.

[@twotut2002]

Would this make for an easy mini bike engine swap

[@gordondeitz7838]

Would this type engine work well for a no pedal build?

[@carstencastaneda8514]

I don't see these bolts and nuts being tightened all the way, should I finish tightening them with a wrench?

[@baffen3248]

How fast dose IT go?

[@charlesbritt4674]

On the axillary wires which would be the positive and which would be the negative because I'm trying to hook up a light setup that has brake lights and turn signals include?

[@bikeberry]

Contact our customer service representatives for step by step trouble shooting and help. 1-800-317-0479

[@jamesmcdonnell4583]

Thanks

[@foxzerox1000]

How would you upgrade to a different exhaust?

[@vicentebinladen1352]

I bought one and it only lasted 2 weeks before the bolts self vibrated off so i recomend welding your engine and gastank for extended performance

[@kxlucifer]

Vicente Binladen wow.you should know to loctite blue all nuts and bolts so it wo t be ever rattle itself out

[@jasoncunningham6714]

Worried about welding on fuel tank incase of hazard? Fill it with water first...

[@bradnsue]

just a note that you put the fuel filter in the wrong direction , the way you put it will not show the dirty filter and will fill up with dirt quicker

[@PhilipHutton]

will there be room for a jackshaft kit??

[@matts.996]

why in the all hell would you do that with this

[@grabir01]

Right at the start of this video, it looks like the clutch has hooked up and the bike is getting away from the dude... What is up with that? Is there an auto clutch adjustment to be made?

[@bikeberry]

LOL we tried to do a burn out with it and failed... miserably. They enjoy making me look like a tool.

[@markus3666]

at 18:50 when he funnels oil into the engine, is that 2 stroke oil?

[@noeltheshemale]

so if you remove the coaster brake, then it becomes like a freewheel?

[@homicidalking1466]

Noel-The She-Male no it doesn't I thought the same then but it just makes it to where u can literally pedal backwards it's weird but I had a lil fun on mine BC i took the poster break off and spent an hour trying to rride my bike backwards

[@robertmiller4580]

I like the size of the engine but not the battery box because of wanting to use it for hunting/scouting for deer can it be used with out the battery box and battery and still run?

[@bikeberry]

You can always pedal.

[@psykowheels1357]

So when you put motor oil in this thing do you still have to pre mix the fuel in addition to that? Or do you just put oil in the crankcase and straight gas in the tank?

[@bikeberry]

You still have to mix it.

[@kxlucifer]

ZER0 2 stroke are good winter beaters if you live in new england region of america because it can get so cold you dont wanna wrench anything i.e drain plug and tjen funnel the oil in.my 4 stroke is my summer toy winter ill beat on tje 2 smoker.

[@gregoryhalye8907]

The oil going into the crankcase is for cooling the engine itself internally and keeping the moving parts inside moving smoothly. The oil you add to the gas is to keep the pistons running smoothly. Do not skip adding oil to your gas. A smart modification to your bike would be to add some kind of storage rack or case on the bike, where you can carry an extra bottle of 2-stroke oil and/or a spare (appropriate) container of mixed fuel. Other smart modifications would be to add an LED headlight and tail light assembly, plus turn signals, and if you wish it to be a street legal bike mod (this is over 49cc) you will need a license plate. Check your local DMV for requirements in your area. As their build is, completed, it's perfectly legal to ride off-road or possibly during daylight hours only in most areas, or quite likely without much in the way of restrictions way out in the boonies.

[@jasoncunningham6714]

Wow... ok folks 2 stroke mix oil is for 2 stroke engines and 4 stroke engine are lubricated from the oil reserve in the crank case and it is different kind of oil. Use synthetic 2 stroke mix oil to reduce smoke

[@justinchampagne2818]

if you look in the manual says 70 cc and in struction book for this engine kit BT80. I bought the kit and I looked in instruction book and that's the reason why I know about it

[@bikeberry]

Sorry were a little confused, is this a question?

[@justinchampagne2818]

Look at the instruction book and come to the bullet train BT80 kit it says 70 cc in the instruction book just want you to know that it's a 70cc for the engine size .

[@justinchampagne2818]

You going to get any more in-stock on your website cuz I'm looking to buy another one bullet train bt80

[@johnharrington4757]

Does the battery clear speed bumps?

[@pauls5745]

mount it on a rear rack or higher up on downtube. bad location under crank haha

[@johnharrington4757]

Yeah the rear rack idea is probably best it will also look better

[@bholaghosh8886]

John Harrington

[@ganeshgavara]

Does the battery charge back when riding?

[@jkoeberlein1]

How about packing the bearing with grease?

[@wakenbake3682]

Got the lights and kill switch wires backwards

[@dr.reviewsfrompersonalexpe7603]

Nice

[@dadeynwilliambusseybiggar7501]

Hey what kind of engine oil would b used? Doesn't say in the video

[@scottfirman]

Use lock tight on those engine studs hey!

[@integrationofmanandmachine4714]

it is called loctite

[@roccoseals7753]

will this kit come with everything

[@boxlimit]

ALY , a little liquid treadlock won't hurt .

[@bikeberry]

Completely agree. This is always recommended for builds, we unfortunately are not able to do so since we are constantly switching out different components for our videos. Fortunately, we do not run any of our bikes for very long without regular maintenance and checks.

[@larryshaver3568]

do you sell those seat posts? i'd like to get one

[@wrestlemaniac202]

Will you ever put a manual clutch on these engines? Love to have the the electric start feature but feels more like a motorcycle with a manual clutch with electric start

[@daniedelarosa650]

does your starter motor keeps on spinning? i installed one of those but there's a noisy sound its like the starter motor is spinning when i throttle.

[@jeffreymitchel3815]

Can you modify 2 stroke bicycle engines to electric starter?

[@bercar5457]

Install the negative cable to the battery, always last to prevent electrical shock.

[@joshuamoses1370]

Hi from Kansas from Joshua

[@vkinn123]

the red switch is suppose to be the kill switch

[@GastonPlacide]

look nice but wat about if it rain or snow and i have to go to work why not make a cover too

[@bikeberry]

In general, we would always advice riders to refrain from riding in bad weather, due to the increased danger and possible damage to all moving parts, even those not associated to the engine kit, such as brake cables, brake calipers, chain, and internal bearings.

[@perlahernandez7590]

I ready wet threw one rim I’m on the 2 Ed rim why do it get loose

[@1122334455yuo]

wow theres an electric start now?? i gotta get one of these kits..

[@bigbulldozer9708]

Yuo don't it's shitty get the older proven style.

[@1122334455yuo]

okay well thanks for the heads up lol

[@1122334455yuo]

I already have a bike that has been with me for 6 years now :) I had two but the other got totaled due to a car hitting me

[@kxlucifer]

Yuo the best i tried so far is 4 strokes theyre slower but reliable.all engine require prpper break in tho.

[@jasonjamescooper6457]

if you can fab and weld I have put 6.5 HP ohv w/centifical cluch fab 1/4''stainless steel plate with slotted holes for adjustable motor mounts and reached speeds of over 40mph I use a jack shaft set up to get both low end toruqe and hi end speed

[@Odtt--Lif]

What wires do I use to hook up spark plug where does the yellow wires go

[@kcscustombikes]

What oil do we put in the actual motor itself?

[@ryansdadismean]

He put the fuel filter on backwards, how do you stop safely without brakes, and I bet those unknow switches on the killswitch can be used for a headlight that can be wired pretty easily into that system.

[@ferdinandtoribio7800]

Sir good work. Sir howmuch the engine. And howmany cc. Thanks

[@thisguytrucks8844]

I just received my kit today wondering why it smells like gas? Any idea please

[@towboatjeff]

Shouldnt the last connection in the electric system be the battery, not the first?