@@danielbockmann883 about 50kph

Hi, just a cheap ebay/Aliexpress tool holder 16mm. And Mitsubishi tungsten carbide cutters (the square type, that you can rotate to use all 4 edges as they wear out). Cheers

@dannyboy768 possibly not adjusted to peak performance with tyre wear in the video? These need constant tweaking to keep running well.

@miguelisobell4070 yes, pocket bike sprocket. I used longer bolts that hold the wheel halves together, with spacers to hold the sprocket on. Same as front brake.

Yes

SKF

Search for vespas for sale

Yes, pumper carb. That way it can suck fuel to the motor without having to mount the tank higher than the carburetor

Make sure the hole in the manifold lines up with the carburetor. Plus it needs a hole into the cases. The pulse pumps the fuel when running

​@@kimjon3774what does hole in the case mean

@anasdarwisy8491 it needs a hole drilled, to line up with the port in the manifold/carburetor. This provides the pulse required to pump fuel. The pulse activates a diaphragm pump (hence the name "pumper carburetor").

@@kimjon3774 thx bro

​@@kimjon3774if you don't mind,could you share with us the carb setup and the manifold❤

Good spotting. I ported it to work that way. I machined the reed cage and flipped it 180. Much better flow, as its now getting opened with the flow, not against it.

Sorry, I sold all of mine a few months ago. Really regret that decision, but onwards and upwards

Stock reed, but turned 180° around. Machined the reed stop to sit down a little bit to clear the cranshaft. Carbon fiber petals

Lol, it was my way of sharing videos with mates who refuse to use messenger or whatsapp

Probably not, but these cag motors are very cheap to purchase and plenty of performance parts available.

I got a junk pocket bike ripped the motor off, tore it down and rebuilt it and it smokes my buddy’s 460. My piston on it is 54mm. Custom made pipe. I have it on a XPED. I got rid of the gearbox/transmission it had with pocket bike and put spindle on. It definitely flys down the road I was impressed for getting the pocket bike for free and had a extra rolling frame on standby.

Do you have a KZbin link for it? It sounds wild!!

I'm going to post a video on Monday, if I'm waiting for the hebo racing 70 exhaust

If you swap the carburetor fir a pumper carb, you can successfully feed from a tank lower down. Most carbs have same bolt pattern, so i added a 15mm ebay carb to mine.

Chain is T8f from memory

Yes, could do. Ive got a few of them. Where are you based?

Its a water cooled pocket bike motor, 6.5hp. I welded a mounting bracket to a 110cc Chinese quad bike axle. Ive made a few of these and this is by far the easiest way to build them

Its the standard axle, nothing custom. To mount the sprocket I turned some spacers on my lathe (×4). But you could cut some pipe of appropriate size to achieve the same thing. Add longer bolts that hold the wheel hubs together, these bolt the sprocket, spacers and hubs together.

Yes, Buell Firebolt XB9R

T8F

Sorry, I don't remember the size, but its on the bigger side of the available range.

@@kimjon3774 no worries..thanks brotha 👊🏻

From memory its around 10:1 ratio, but not 100% sure and goes about 50kph

Just cheap (chrome) ones off ebay.

I used an offcut of 150mm pipe as that circulat bracket to bolt them to. It was the most compact way of mounting them that i could think of.

Cheap ebay ones

@@kimjon3774 Thank you, I do appreciate it. Wasn't able to hear the full Dixie tune, but from what I can hear it sounds great

Funny, small world

@@kimjon3774 I mean...not really. I had subscribed to you

G23LH

Yes, that's correct. I ported it, changed the duration times of exhaust and inlets. Plus bigger carb. This was my first ride, no brakes, badly tuned carburetor. It's dialed in now and running smooth now

22cc zenoah motor

@@kimjon3774 I still love this project man great job

I made it, but abandoned the idea later on. It increased case capacity too much.

@@kimjon3774 Couldn't you add reed and case stuffers?

@@rabbitfootedkitty1339 yes, absolutely. But I started to think that the juice wasn't worth the squeeze on this one...

@@kimjon3774 Doesn’t like the Honda Dio reed valve fit on there too? Bolt pattern and spacing looks similar. I’m interested in these pocket bike motors because they’re on the cheap pocket bikes, which I’ve had 2, and in the primal raminator. It’s extremely interesting to me to see the RC guys talk about the engine when it originated from pocket bikes lol. The case reed seems like a fundamentally bad design because the air fuel mixture has to go through the entire crank to get to the transfers, but they’re cheap and me and others it seems like still have hope of improving them, so we try. I think they’re also on garden and landscaping equipment sold in China, where the gas tank is above the engine, then someone was like hey let’s put this in a tiny motorcycle.

@@rabbitfootedkitty1339 absolutely, I totally understand where you're coming from. That's why I started playing around with them too. I've built about 6 of these using combination of ideas. I learned a lit off the pocket bike plannet website/forum and applied those ideas to my motors. I always thought the petals on the factory reeds look backwards to me. So that was my first attempt at modification. Then this reed block was the second - however it was very crude and I messed up my case volume ratios. It could be a winner...I just never proceeded with it afterwards

Geo bigfoot, so motor on other side

It's a geo bigfoot

Hi. Yes, but its not going to be that much better as a straight bolt on part. There's a bit of work to get it dialed in. If you want the best performance out of it, you're going to have to port match the transfers, flow the cases and set the port timing by either spacing or removing material from the base, then set the squish band by doing something similar up yhe top. It sounds technical, but its not really that hard to do. Just a matter of putting a timing wheel on it and seeing where things are at.

@@kimjon3774 Yea im familiar with porting the case im just trying to achieve 6.5 hp with the ported block + carbon reed. do you think its possible?

@@dallas749 probably not. I've got a polini 39cc pocket bike that's rated at 6.5hp (factory motor, no work done by me) and it's a lot quicker than my motors I've made based off these cag 49cc engines. I'd only be guessing, but I'd say mine would be 3 - 4hp tops? But that's just a guess.

@@kimjon3774 thank you thats good to know, im building a jetsurf and need 6.5+ hp with an engine lower than 20cm high i might have to bolt two together. Are the polini more expensive?

@@dallas749 yeah, polini is newer style transfers. These Chinese motors are basically like weedwacker style...not high performance.

Pumper carb, think its 15mm?

​@@kimjon3774quiero saber lo mismo, cómo adaptaste ese carburador a ese motor? Ya que el que traen de fabrica es otro tipo de carburador, no traen el de membranas

Pumper carb, 15mm

Hi, its a 49cc cag engine. Commonly found on kids quad bikes or motorbikes. I've done a lot of work to it, balanced full circle crankshaft, 5 transfer ports, windowed piston, higher compression, pumper carburetor etc. It goes great!!