Making a Honda GX120cc Motorized Bike

[@BenCarano]

Check the description for part links!! If you have any other parts you'd like links for let me know!

[@jimwilley246]

I very much want to know the teeth number on the sprockets on your jack plate . I'm installing a predator and the same plate. I'm using a 12t on the clutch and 36t on the wheel. Any help would be appreciated.

[@BenCarano]

@@jimwilley246 Im running the same... 12t on motor side and 36t rear sprocket

[@bababla8528]

Hi, please could you tell me the name of the transmission you used? The link it not working for me

[@Aiden728idni]

@@bababla8528 me neither and i also want to know, please lmk if you find it or what you used

[@bababla8528]

@@Aiden728idni I was using a gx200 engine I think (6.5hp) which had a 20mm bore and 2mm keyway

[@albertmichall5732]

Well I watched parts 2&3 first then part 1 . still was very good . Thank you Ben

[@st.paulmn9159]

Just make sure your bicycle can handle the power. I’m comfortable with 3-5hp on steel cruisers from the 50s

[@cre8tivegarage157]

This is a nice video. We don’t really work on bikes or small motors but this is very informational.

[@nickhersheys2706]

Tip: Get the bicycle called - "The Chief" from company Firmstrong, (comes in one frame size only size- 21.5") the whole engine will fit in the frame including the tank and the stock exhaust.

[@BenCarano]

Sounds sweet!

[@crazycarpes]

beautifull engine!

[@buckboula1304]

Where did you find the transmission plate you put on that motor?

[@Initial_Gopnik]

I have used old bicycle wheel spokes with great success, they’re usually stainless steel so they don’t rust easily and they are very stiff where they are bent and can be used for odd bends and L shapes to clear different components.

[@TheScottishSprayer]

Nice idea ❤

[@musicaquellegaaalma-cc6kq]

hello i would like to ask you if you can answer me where did you get the cluche transmission conversol i am thanking you right away

[@noahhamilton2130]

When is the part 2 I want to see you ride that bike

[@BenCarano]

All the parts have been on my channel for two years now, just search for it on my channel

[@ENTHUSIASTICFIFAFAN]

Love the video. This is gonna be my project once i have enough money to buy the engine!!

[@ENTHUSIASTICFIFAFAN]

Literally the best through tutorial vidoe!

[@paulgibson8846]

What is the length of that engine? I got a post on my Diamond back 26" that OHV gets in the way of success.😢

[@VirantRoss]

Nice. Gx120 excellent choice. Plenty of power im sure

[@JoseDiaz-ug1xo]

Like how much power?

[@JoseDiaz-ug1xo]

Cause wanting to get one for Phatmoto all terrain bike

[@howto1113]

Great video

[@larryshaver3568]

where did you get your engine? i'd like to know Honda makes something smaller too

[@Libertymongoose420]

Obviously you never seen my videos on my previous channel libertymongoose420 I had the clone of this engine a 118 cc lifan 4 HP mounted on a modified friction drive mount I use a centrifugal clutch for the drive its been very reliable for the past 3 years bullet proof engine.Anyways glad to know it will fit in this frame good job

[@tomtee4442]

Did you bypass the governor on it?

[@Libertymongoose420]

I removed it totally linkage and internal gear

[@tomtee4442]

@@Libertymongoose420 That is the best. The Honda with forged internals should be bullet proof!

[@Libertymongoose420]

@@tomtee4442 well the governor gear is plastic so it had to go. At first i left it in along with the governor shaft and it reved so high the governor shaft made the timing gear jump.

[@terencekaye9948]

Great job!

[@adam_-adam]

I have a phatmoto with 79cc, i. Thinking of rigging either a 120 or 160, cant decide yet which would be easier/better but was wondering what you think about the 120cc comparred to the torque and power of a 79cc, do you think its a noticable difference? Can maybe climb hills better? Thanks

[@BenCarano]

As for your debating about the 120cc or 160cc, you would need to make sure your bike would fit the 160cc. For me it was too big to fit in my frame by like a half inch so I had to go with the 120. In terms of a noticable differences between 79cc and 120cc, the 120cc will definitely have a little more torque (I'm able to ride it with two people, about 300lbs on the bike, on most terrain). However if the rider weight is under around 200lbs and you don't ride it on steep hills in the mountains all the time you should have no issue with the 79cc.

[@brianweaver8024]

Great videos, thoroughly enjoying them! Funny thing is I’m not a able to see the parts lists you are mentioning? Any help would be appreciated. Tx

[@BenCarano]

glad you enjoyed them!! most of the parts aside from the engine are in the descriptions of the 80cc 2 stroke build videos that I did before I upgraded it to this

[@callum8143]

Great vid 👍

[@jeffwalters6044]

Where u get clutch serup and plate

[@robrushing2345]

Do you have a kit for sale

[@BenCarano]

Unfortunately I don't have a kit for sale, but I will keep that in mind as you are not the first person who's asked me!

[@robrushing2345]

I live in San Diego and bikes are encouraged very much. 52 MPH ON A MOUNTAIN BIKE with full suspension would be a very nice Mode of travel. FYI find a way to engrave 49 CC on the motor somewhere. Great job on that build buddy

[@BenCarano]

@@robrushing2345 thanks! and yah, gotta not have it be over 49cc lol

[@wilfredlinares9755]

Who build your transmission or did you buy it from a transmission company

[@BenCarano]

I bought it from Kingsmotorbikes "212cc preditor transmission for a motorized bike"

[@EpicLabs24]

Do you need the trans? You inspired me to make a similar build, but my engine would only fit with the shaft on the bike right side (cylinder pointing forward). I’m figuring I’m going to have a hard time getting the chain from the trans to the wheel.

[@BenCarano]

You definitely need it with a gas engine. You would not with an electric but fuel injected engines don't have instant torque right off the bat so you would need something. They can definitely be finicky to line up sometimes!

[@EpicLabs24]

@@BenCarano Realize the problem is bigger than what I stated earlier. This is my first build so I’m making a lot of mistakes. Anyhow, the way I put the engine in would mean the bike would be stuck in reverse (Didn’t realize that the PTO side spins counter-clockwise). I’m going to have to force the engine in the “right” way, which will probably make me have to lean the cylinder head up a bit. Based on the manual, that shouldn’t be a problem.

[@BenCarano]

@@EpicLabs24 tilting it up a bit won't be too bad. I generally like to keep them pretty level, but I know many people who tilt them and don't have a problem!

[@niteshades_promise]

i wish i could afford a honda engine for my phatmoto. nice. 🍻

[@survivalishardstaystorng]

Nice video thanks

[@paulgibson8846]

Hey I got 160cc or I ordered one they sent me a 210cc do right now I'm in the middle of negotiation with the company. Before I exchange it will a 160cc fit? I got to hope its. Dam it you just said it 160cc won't fit damn it, damn it, damn it 1/2" inch. What if I lifted it up an inch or 2" on to the 45° degree bar? The motor you got cost 3 times more than a 160cc😢

[@BenCarano]

Yah I ordered a 160cc first as well hoping I could fit it, but on this frame I used it was just not possible so I had to go with the 120

[@gordonpoloway7051]

Watching your video now wondering how much the whole build cost....Honda gx120 with transmission

[@BenCarano]

Whole build was about 5k, you could do it cheaper though if you spend less money on the bike parts themselves

[@Jezza_C_WT]

​@@BenCarano Dang, that's a fair whack of change! The quality shows though. Of all the 4 stroke bike builds I've seen on YT I keep coming back to yours for inspiration. I figured I can slap one together for about 1.5k on the cheap. That's using a Micargi steel frame Rover or Huntington bike, a GX clone engine, cargo bike tyres, and all the miscellaneous parts to put it together and get her running. I'd really love to get my hands on a genuine Honda though, but obviously that bumps the price up significantly. Either way, super pumped to start my build! And thanks for the great inspiration 😎👍

[@BenCarano]

@@Jezza_C_WT Thanks!! Good luck on your build!! Also, even if you get a clone honda the mounts are in the same spot so you can always switch it out later! Only thing you'd have to do is get metric hardware to mount it

[@lylesloth1275]

bro can u tell me ur total expenses? i have a 60cc bike and its feel slow af, i wanna make one of this this summer, pls tell me ur expenses thx, total cost for this build

[@BenCarano]

For this exact build, assuming I got everything right the first time, was about $3,800. However if you want to cut costs from that the first thing to do is get cheaper wheels. I spent about $750 on the wheels alone because at the time the only option for ones that were strong enough in my opinion was to custom build them. Now I have found fairly nice pre-made ones that are like $180 for the set.

[@lylesloth1275]

@@BenCarano thank u for this!

[@alfa5502]

@@BenCarano is it fast

[@shawnwright5332]

@@BenCarano how much for the belt transmission and were did you buy it?

[@zoologicalmilitia2241]

What is the shaft size of that injun?

[@BenCarano]

I believe i chose the 3/4" one. there is also an option for 5/8 i think too

[@norcal8718]

Cool video bud. It's good to see the next generation getting into mechanical work and adapting with your own ideas. I want to give you a suggestion if you don't mind, you should probably get rid of that Governor all it does is slow the engine down by keeping it from full throttle. Good luck and be safe 👍🏻

[@BenCarano]

Thanks! Yah I’ll keep the governor as it makes the engine last a lot longer and I have plenty of power anyway, appreciate it though!

[@estelallen]

Slip the clutch over it will line up better you can run it either way

[@chucklanman3315]

If you want more power, you can remove that governor.

[@BenCarano]

I know, I didn’t want to with this build

[@prateekbhardwaj9943]

part 2???

[@BenCarano]

all the videos were out a year ago. Go to my channel and they will all be there

[@DavidKing-wk1ws]

No you must install a dodge viper v12 on a bicycle :) Actually this should help me with a honda gx100 build :)

[@BenCarano]

Lol that would be crazy fast

[@paulgibson8846]

The dimensions for a 160cc is 12" the dimension for a 120cc is 11.7" , 100cc 12", 210 cc 12" Most all Hondas are 12" length except for 1, GX 50cc -7.8 inches is the only candidate for a common standard 26" bike that is somewhere in the 2HP screw the freak frame bike.😮😅😢😂

[@BenCarano]

yah finding parts that fit together can definitely be a pain! I think they make different size frames now though! My videos here have done well and a lot of other companies have taken some of my suggestions to create more options so if I built this bike again there are a lot more frame options out there now then there were back then

[@EuthanasiaSUPREME]

You should use nail polish

[@BenCarano]

😂 That would be great! Although it weakens my nails and I need them as strong as possible for guitar

[@EuthanasiaSUPREME]

​@@BenCarano That's some dedication right there

[@Bennyfinklestienfurtrapper]

The governor works excellent on a Honda engine and of coarse it doesn't move unless it's running the governor works by spinning and throwing weights out and hits the gov arm which properly adjusts the carb. Honda small engine are the very best in the world that's why every single other motor is a clone of their design . I come her to get tops and hints and now I am running away from this channel due to the complete nonsense that's been spoken . I am a Honda warranty tech along with Briggs makita Hitachi multiple other brands for 10 years now and I have never seen a better motor then Honda nor have I seen the gov arm move without running the engine which are centrifugal and are controlled by rpmthe faster the motor spins the further the weights are thrown out the more the arm moves that why when u have a engine that hunts u can sit and watch the gov arm surge back and forth