Centrifugal Clutch vs CVT Torque Converter 

Great video. Very informative. Just got done building my 66cc BT with the same frame. These are fun little hobbies.

For the belt: that system is super common (in Europe) for all scooters. That belt usually last, if in a closed system like yours, 40 to 80k Kilometers (50k miles). That stuff is super strong

You did a great job on explaining the operation of the components. 👍🏼👍🏼👍🏼

Excellent job of presenting the details and considerations! I learned a lot! Thanks!

I like how much you put into this video but I also think you need to try that centrifugal clutch with better gear ratio... I feel like what was happening was you weren’t getting enough rpm to consistently engage the clutch... I think you should tinker with ratios and see if you can get it to work better

This footage and info is fantastic, Well done... And thanks for having no annoying back ground music, Cheers

Loved the video I bought a death row torque converter after watching this video for my next motorized bike build it bolted right up to my 3 1/2 hp Briggs & Stratton

Ben this was awesome I've been wanting to try the same type of engine on a bike love this kind of grassroots hobbyist video.

Great explanations and experience. Thanks!

damun... thanks .. that was reallly informative.. i was so stuck in wondering how the torque converter worked..

I’m building my own go kart at the moment, so this is a big help

Bought a minibike to putter around the yard, mostly. The original centrifugal clutch worked well but had that on-off characteristic to it. Not jerky, but when you're only wanting to go less than 10mph around the yard it's super annoying needing to modulate speed with constant on/off throttle adjustments. That alone convinced me to switch to a torque converter. Well, that and the fact that the jackshaft's axle was defective and disintegrated its woodruff key with less than 10 hrs on the bike, rendering the bike motionless. I'd also read you're supposed to regularly oil the outside of a centrifugal clutch where it bolts on, which wasn't going to happen much. I like the inherent simplicity of centrifugal clutch setup, just not for my bike.

Thanks have been having same problem with centrifugal clutch switching to torque converter

Thanks for the through explanation 😁

Thanks for the help, brother. 😃👍🏼

THANK YOU FOR YOUR VIDEO I HAVE THE KART AND ENGINE BUT I DID NOT WHAT CLUTCH TO GET ❤😊

Thanks for the explanation

Put the central field clutch on the other way. So that the sprocket is in toward the motor and the clutches on the outside. It will save them bearings

Have u ever thought of doing a finger nail clipper comparison?😁 u have a real gift with teaching. Great vid.. 👍

Great video, bro! I thought I was the only one who felt the awful shake of that centrifugal clutch from a dead start. I will be ordering a torque converter soon.

Great job.

Thanks for the information 👍

Centrifugal are best at wide open throttle. Which is why slow start. They much faster at wot. Torque converter is better for stop and go. It’s like the NA AND TURBO versions of cars. Naturally aspirated is fine for beating on your car and turbo is for speed. Nice video

Good video and description

Lesgo bro nice explaination lovin it

nice video budy!

thank you, best review of the torque converter that I have seen ... thank you 🙏🏻

Good to know! Thanks

You're right about the clutch it has ruff starts & alot of jerkiness when I switch to the torque converter im getting better gas mileage & a smoother ride

Centrifugal clutch + cvt = PERFECTION

VERY good video

Hi bengamin I enjoy watching your videos

I wonder if there is a specific torque converter i could get and just put on? Was thinking of getting a gx160 clone... Also ive been seeing a upright mount for those motors, are you familiar with those, and what are your opinions about those mounts?

Thanks homie

Guitar player. Pick hand with built in finger picks

Did you use the set screws so it sets it in place and doesn’t move? Also didn’t look like your chain was straight and definitely was grinding on the centrifugal clutch. I could be wrong but that’s just what I noticed

7:1 ratio is the best I found out so far for 100kmh top speed on a 50cc kids quad 208cc engine swap with centrifugal clutch($35-$75). and buddy had the cvt($350-$400) and he has take off but no top end speed ghe tops out at 75kmh. and I just fly on by onb my 11occ kids quad engine swapped to a 420cc centrifugal clutch. sound like he needs to cut the spring 4 links shorter or gear ratio is to low. and it's trying to stall it. if you are lazy like me. throw a little bit of oil on it and go. it's stop the choppy till the oil dries up. which should take several days or 3 hrs of hard riding. and his chain was to tight!!!!!!!!

Thinking about using a duromax xp7hpe electric start 4 stroke on a bicycle project. Thinking about using a similar torque converter. Wondering about the gear alignment. Where did that torque converter come from? Most ive found come as is. Just wondering in case i have a similar alignment issue and need it customized.

I just sawr a 2:1 3spd plus reverse transmission for the 270-301 Was ur pulley and cvt faster than the cvt clutch

Is it the same for a chain torque converter?

Clutches have been used successfully on mini bikes and go karts for decades. The reason you were getting clutch chatter is your gearing. And you are lucky that you didn't buy an expensive clutch because it would also chatter due to your gearing. For a clutch to work properly on a tall tire bicycle you would need at least 9/1 gearing or more. The torque converter works better because in low the ratio starts at 2.7/1. Say you had 10 tooth with a 40 tooth sprocket. This would equal a 10.8/1 numeric ratio. Much better with your tall tire. The same sprocket count with a clutch would be terrible. The gearing is just way off. The torque converter you have is not made specifically for a Predator. It is universal and can be used on many engines that have a 3/4" PTO. And they have had much more power put on them than a stock 212 without breaking. It's all about gearing.

I can replace the belt without taking off any pulleys . is this normal?

Any thoughts on a stock Phatmoto (fat/4" tires) with a stock 79cc four stroke? How much more weight does a torque converter add? I have to lift my bike over obstacles and into vehicles at times, and at 70 lbs I am thinking about mass increases carefully. Not sure if they have anything for my bike yet, new to all this. Thanks to anyone who knows...

Can I use a bike detailer handlebar index shifter as a cruise control? On my throttle cable

Could you put a torque converter on a 49cc 4 stroke?

Which offers better mpg?

cool man

I call them a 1 spd powerglide

My clutch has been working for 30 year my dad gave me his mini bike and I am still riding it

Same problem with my supernatural by Helio. Rear rim snapped at 500 miles. Any suggestions on how to go with a rear wheel rebuild?

That CVT clutch snowmobiles been using that for years I need one for my 2-stroke 80cc motor kit for my mountain bike you know any company that makes one

The crappy Chinese clutch you tried is actually a good idea. If you ever try it again take the snap ring to separate the two sections and apply high impact high heat expensive good grease and it will work. I’m going to try to put needle bearings it. We’ll see?

Hello Ben, I am looking to buy the same torque converter and in your video you mentioned you bought the customized torque converter at "Motorized Bicycle". Would you mind sharing the link to the company?

Honda GX 100. Is there a CVT that fits that engine? Thanks

You need a bully disk clutch. We use them on race Karts

i really wanted to use the cvt, but here on brazil the price of the whole system is the same price of the stationary motor

Is it possible to build a CVT torque converter that doesn't use a belt or any computers, and looks just like a normal centrifugal clutch on the outside? I'm basically trying to build a chain-drive race car with an automatic "3-speed" on the front (technically more than 3), driving a manual 8-speed on the back. And the automatic portion is meant to be in disguise (the rules say you must have a manual 8-speed transmission, but they don't say anything about having two transmissions.) My motivation for deceptive engineering is to be competitive against established outfits in a situation where my resources are very tight, and to be very innovative in spite of those limitations (and unnecessarily strict technical regulations.)

that is happened to me also that clutch make a lot noise after second used day so i got crazy because i though is the crack shack but now i know is the clutch

Trataré de hacer esa conversión en mi motocicleta,con el embrague de motoneta.

splendid explanation... keep it burning dude. i would love to team up!

Link for the torque converter with the sprocket behind the plate? Can't find it. Looked for it on my own, no luck. I'm actually building 79 cc predator

Good narrator, New to the 4-stroke how is a #35 chain compared to a 415 or 420? Can I pull the sprocket off a 2-stroke motor and put it on a 79 cc Predator, I guess keeping in mind it's metric to machine SAE threads any problems anticipated? I think the 79 cc is a 5/8" shaft compared to a 2-stroke mm very close conversion what would I use if there is slack plumbers tape?

I ride Mopeds, what's the difference between a CVT torque converter and a CVT transmission? They look very similar, but CVT transmission is way longer I think... Seems like it's same mechanically

First reaction seeing the long fingernails on one hand - He plays guitar. Non-musicians just don't understand this.

Can you tell me where you bought the torque converter an have customized thank you

Nice video!! But can i put the converter on a smaller engine ? 49cc 4 stroke Thanks

My centrifugal clutch does not make that noise and it hooks up great, but the torque converters are nice.

hey just saw your video pretty cool dude. keep it up.

Quick question? On my cvt vs clutch, my clutch will let me roll the bike easily without the motor on. The cvt will not let me roll the bike easily without the motor on. Is your bike the same? As in the ease of pushing it around with the cvt? Thanks!

Where did you get your motor mount?

I honestly think you were having a bound up situation somewhere with the clutch set up. A good experience with a clutch and you will be sold.

Do you have a link for the cvt with the sprocket behind the plate?

Cant find a cvt with a backside sprocket. What brand is this one.

07:24 now you know why bikers wear boots.. so no laces/threads get caught up in the belts/chains/pulleys and ripped your clothes/leg into the pulleys/chains/wheels etc. Very good explanation btw.

Honestly the clutch makes it easier for the motor to start whit out heavy load. if you have a string to pull for engien to start.

Hi Ben, viewer from Europe here. I want to start a similar project using the torque converter but i've seen that there are 2 types of converters- 1" 10T 40/41 and 12T 35 Chain and 3/4" 10T 40/41 and 12T 35 Chain but don't know which one to choose so can you tell me what those numbers mean so I don"t have to buy the wrong one since I'm going to order it straight from china. Great video explaining the pros and cons btw.

Basically

Put a 14hp motor with a centrifugal clutch on a gocart and just about burnt out the clutch. Put a 7hp with a CVT on the same gocart and it works great. Another way to get an ideal gear ratio is to go with a jack shaft

good

What do I need to get the gear to the other side of the case a longer shaft I don't think the on I orderd is like that.

Hey do you still have this bike? How's the 212 treat you?

what crankshaft diameter do u have ? 3/4 inch?

YOU SHOULD GO W/ THE GREEN SPRING

Nice Work Benjamin - very useful video although I'm thinking I'll go with a centrifugal clutch as I'm making an inboard motor for a tiny yacht and thinking the benefit of the torque convertor is really where there is a load on the engine?

clutch price ? Nepal

The nylon nut works just put on upside down

What company did you go through to get your torque converter in this shaft

Could you post a link of the cvt kit you bought and also the extended driven shaft. I'm going to switch over but I can't find an extended shaft.

wonder if that would work with a 79cc predator

Hi, may I ask where you got the front bolt-on motor mount?

I googled cvt clutch for 80cc motor and it just shows up with the centrifugal clutch

Dude could you please send me the torque converter, wheel sprocket & chain you used? I am literally doing the same thing right now I just bought a predator 212 and I have everything else I need but those parts!

Get the wide crank pedal kit.if ur pedal are hitting the engine!!!

Hey mate I’m building a atv motor bike motor.. in getting a 6.5 hp motor with a 19mm shaft.. is that 3/4 ?? Buying stuff off eBay I am.. tor convers ... before I order it I want to check with u first.. cheers Chris

Which reaches more speed?

I just put one on my race kart it didn’t line up so I spent 3 days cutting grinding and adding on all kinds of metal 😂

I thought John mulaney got into go karts for a minute

i am trying to find a solution to my problem - i've built electric gokart and CVT would be awesome if i could get engagement at 0 RPM. Gokart is 12kw peak so thats like 17hp. with long gearing it doesnt have good acceleration im trying to research the matter but nobody does that with electric motors where you dont have to idle the motor

That jitter happens when you have the clutch on the drive shaft backwards.

Wait so is there any reason to use one over the other?