DIY Crazy Cart with Plans 

That one in the back? It's the handbrake and without it it wouldnt drift smoothly

When the wheels are 90⁰ they can spin freely which makes you drift. When they are in a 20⁰ or 30⁰ angle they cant spin freely so you can drive normally like a normal cart

If you have a mechanism for triggering the cordless drill it could work, but I think you will preform better by using a motor and a controller like in my design.

Hey cbarber, that summarized the problems I encountered in this build. I further recommend to mount the motor more center-aligned to the steering axis to lessen the inertia. What also is very crucial is to ensure, that the castor wheels are orthogonal to the floor when the lever is pulled up the whole way, otherwise you wont go always in the drift mode, especially at low speeds.

@@ttschabos Hey would you be interested in selling me this first draft?

You are right, somehow the length is missing for the parts of the chassis itself. I will update that next.

When would that be, I am trying to make one and I need some dimensions, for the steering, what did you use to attach to the chassis so it can spin.

Also how high is that triangle thing at the front for the steering

Hi, here you go: www.mediafire.com/file/0esc4vn227614o7/Chassis.PDF/file

There's a one or two I've seen on here. One brushless and another with 6.5hp engine

Thx, the cart goes around 18 km/h with this 350W motor. What do you mean by autonomy?

Ye, 1000W are more than enough for such a cart, since at higher speed this thing loses control very fast and so is better to use for slower speeds and agile movements.

Hey for the triangle thing at the front what distance did you put them apart from each other

You can use the hoverboard motor

@@thecrazerkid2146 will 200w be enough?

@@damirrimad1823 yeah but depending on how much you weigh the original crazy cart has a 250w motor so you should be good with 200w

Yes

Hi, this download link should contain most things you need: s000.tinyupload.com/?file_id=38707419086079766122 (Download by clicking on "Additional.zip" in light green)

@@ttschabos could i get it too the original link dosent work

The cart can turn directly around the fronwheel, so a 180° turn is possible. I spent around 200$ for all the material. What I can recommend after the build is to use a frontwheel with more grip and to lower the seat, such that you cannot fall off so quickly.

Applied Engineering Thank you for replying. I really appreciate. Thank you for the video too. I've been wanting one but don't want to pay $700. How fast is your car? I know it depends on the motor but what speeds do you get.

The car makes about 18 km/h with the 350w motor. There are plenty of available motors with motor controllers on aliexpress up to 2kW. What I really recommend for higher power motors is a mechanical brake.

Applied Engineering oh ok. What type of battery did you use and how long does it last?

I used Kung Long WP12-12, they last for around 1h, but they are not really made for cyclic usage, so I LiPo would maybe fit better here.

Because at higher speeds you sometimes need a brake and it makes also the whole cart more easy to handle

I used two Kung Long WP 14-12SE-F2, but you can actually take any battery with enough power and 24V.

I use an electrical brake, which shorts the motor over a power resistor to dissipate the energy. This only works for high speeds, since the braking power is quadratic in the EMF voltage, which is proportional to the angular speed of the motor. I would recommend a mechanical brake, which could directly be mounted on the front wheel, which would make you way more versatile at low speeds.

Applied Engineering wow im impressed that how fast you reply😂 I've been looking for a diy crazy cart video bcs they looks hella fun but the price is unacceptable, can you give me the total of the parts? also include the price of a brake kit

Applied Engineering also i try to find the motor on aliexpress but all of them have a gear set attached to them, would they work the same?

:D I was just in front of the computer. You can buy everything on aliexpress for around 150$-200$, but the steel you need to buy at your local metal store. For the wheel you can use for example this rim here, where you can attach a sprocket and a braking disk: www.aliexpress.com/item/New-Aluminium-10inch-Rear-Scooter-Wheel-Rim-Aluminium-Rear-Wheel-Hub-10inch-for-Scooter-Tire-Scooter/32368040957.html?spm=a2g0s.9042311.0.0.JR2E9m The motor is a my1016 (without z at the end -> no gearbox), which is available with different sprockets on aliexpress.

Hi, here is the link to the new chassis plans: www.mediafire.com/file/0esc4vn227614o7/Chassis.PDF/file

for the angles did you use degrees becasue the angles don't make sense to me

Yes, in degrees. Well, it is eactly like this, 20°+2*35° = 90°, and that twice gives the 180° for the triangular part.

Sorry and also for triangular part how long is the cross section at the top(how wide is it)

Around 200$, but it depends mostly on how cheap you can buy the steel.

350W