Vortex velocity stack

[Wevil Kenevil]

I've been wanting to build or design something that will legitimately be an upgrade for motorized bicycles and leave my mark on the motorized bicycle world and I think I may have come up with it!

Thanks to my friend's dad (Don) and his position within the company, I am being allowed to use an AI design cad program that Aerojet and JPL laboratories uses to design rocket skirtings and velocity nozzles.( It's the same one that Elon musk uses...) To design a velocity stack that swirls the air causing a vortices to help the flow of air enter the carburetor easier and faster.

Now before you start jumping all over me and telling me that velocity stacks don't work on two stroke engines... I'm here to tell you they do!

We just have to run a few more tests and I will post my findings. I'm going to have the design laid out in a 3D printed vector so I will be able to post it and share it with everyone.

I'm so excited I can barely wait.

This is going to be great. Fingers crossed. It should be ready in a week or so...

 

[wrench]

Yup, you also can make V stacks outta different shaped and sized water bottles until you find what works best

KISS

 

[Wevil Kenevil]

I've been trying to learn just the basic functions of this CAD program you need a freaking PhD just to run it!

At this rate it would be easier for me to just draw it on paper... Hmmm.

 

[Venice Motor Bikes]

Motorized Bicycle Velocity Stack 49cc 66cc 80cc Black Fits 60mm Air Filter | eBay

Motorized Bicycle Velocity Stack 49cc 66cc 80cc. This part will fit a 60mm Performance air filter. This velocity stack fits on all standard motorized bike carburetors. Also known as a bell mouth, Velocity stacks boost performance by creating a laminar flow of the air that goes into the carburetor.

www.ebay.com

ScooterX Performance Air Filter & Velocity Stack for Scooter Go Kart Pocket Bike | eBay

This performance filter and velocity stack fits the following ScooterX models This will fit any 33cc-52cc Huasheng Chinese gas scooter engine. We will be happy to take care of the issue. We are on the west coast so the closer you are to the west coast the faster your item will arrive.

www.ebay.com

 

[Wevil Kenevil]

This is what I've been able to design so far. I know it's not super detailed or anything but this cad program is a lot harder than I ever imagined I'm surprised that I gotten this far. .

 

[Wevil Kenevil]

Motorized Bicycle Velocity Stack 49cc 66cc 80cc Black Fits 60mm Air Filter | eBay

Motorized Bicycle Velocity Stack 49cc 66cc 80cc. This part will fit a 60mm Performance air filter. This velocity stack fits on all standard motorized bike carburetors. Also known as a bell mouth, Velocity stacks boost performance by creating a laminar flow of the air that goes into the carburetor.

www.ebay.com

ScooterX Performance Air Filter & Velocity Stack for Scooter Go Kart Pocket Bike | eBay

This performance filter and velocity stack fits the following ScooterX models This will fit any 33cc-52cc Huasheng Chinese gas scooter engine. We will be happy to take care of the issue. We are on the west coast so the closer you are to the west coast the faster your item will arrive.

www.ebay.com

Exactly but with some built-in sort of aerodynamicity to cause the air to swirl as it enters the throat of the carburetor so is to give it a tornado effect.

 

[Wevil Kenevil]

I'm going to have a friend print out a velocity stack with those fins and see how that plays. Kind of like the picture but more aligned and honed in.

And I definitely have an idea for the air filters. The spiked intakes for a motorcycle velocity stack if you look at the inside of them they've got this little cone pointing down to the throat of the carburetor and what that does is that causes of vortex and to be drawn around that cone and it supercharges the air current.

I don't see why that can't be implemented in a air filter on one of these motorbikes. It would make a lot of sense because you're just drawing from a flat bottom cylinder then a cone delineator. I'll try to find that diagram and show you what I'm talking about.

What I'm talking about would just be a small piece of plastic in the upper part of the air filter. The first one is the spiked air filter and how it looks inside and the second one is basically what the other one would look like just with a shorter and fatter delineator. I guarantee you this would cure a lot of air flow problems and cause the bike to run smoother. And you would have the benefit of the filter.

 

[Wevil Kenevil]

And to be honest with you guys it's easier to print this out on a 3D printer then it is to try to even use that CAD program.

That cad program has fluid dynamics and aerodynamicity tests and all that kind of stuff built into it...

But it's easier just to build it and do it by hand than to try to learn all of that and remember what does what..

And the setup on it is just incredible having to set all the parameters for an 80cc motorized bicycle with a 42 mm piston and a blah blah blah this and blah blah blah that and blah blah blah and you got to describe everything around it for it to even understand. It's for building rocketry and it's just too complicated. All your measurements and spatial orientation must be precise.

 

[Wevil Kenevil]

This is what you can 3d print and epoxy it inside of your air filter as to allow the air to enter your carburetor easier. No matter what your upgrades. You will definitely have to adjust your jets. I brought mine down by three and it seemed to work best

I was going to go with a Fibonacci spiral or the Archimedes fan blade but that's a huge rabbit hole to go down. I don't have the materials or the test equipment for it these both have a coefficient of about 145%.

I was thinking of inverting this cone into the shape of a velocity stack and see how that worked out but I haven't had the opportunity to invert it but that's coming up next.

I've discovered the difference between volume and vortex when dealing with carburetors. Volume isn't always necessarily good it's not the amount that enters it's the way that it enters that makes the difference. By causing it to inhale in a vortex has more effect of pushing out the old exhaust and scavenging what's left.

USing this basically stuffs your air filter with something that is more aerodynamic than just sucking into an air filter.

The second picture is a cone modification for a ym 16mm carb that I made that seem to work a little bit too good. I didn't have a jet that small. If you look at it close you can see the fins on the inside.

 

[Wevil Kenevil]

Another idea... It's difficult to get vectors off images that aren't cad'ed and the "image to cad programs don't draw it right.

Something interesting I found out, architects going to school do not go to school to mainly learn angles and stress points they go to learn the cad programs... Like really? That is just freaking ignorant.

 

[Wevil Kenevil]

This but with this style body to fit the carburetor more evenly instead of being offset. Now I just have to merge the two.

Yes I'm plagiarizing the two but as long as I change it by 10%, I'm clear of copyright so just save me a bunch of time I just have to vector the two together which changes it more than 10% so it's all good.

Moral of the story is CAD is bad mm kay kids!

 

[Wevil Kenevil]

This is what I need to incorporate into it. Even if it just set over the top of the velocity stack the small amount of pressure that is created there would be enough to trigger the vortices.