So I’ve been wanting to make a Go-kart for like…well since Mario kart probably. By the way, the guy in that link just *wrecks* it….Anyways, so while deciding a new project, I had the choice between a laser cutter and the gokart.

I guess you’ve figured out already what I decided to build.

So, like the last project, a person should write down the kind of things they want to do, or rather, what they want the machine to do, So here it goes:

- Go fast
- ….

Ok. maybe thats a little short. How about we think of some limitations I’ll artificially put on the machine

- It should be small. Almost uncomfortably
- It should be fast, no less than 60 Km/h
- Under 1000 euros
- others

Well, ok that’s not so bad. There some other things I’d like to throw in there, A power governer, one that a person actually has to manually switch in order to go to super speed mode (60km/h +), an LCD speedometre, and maybe a battery charger display.

A friend of mine and I talked about it to today just to see approximately what a person would need for motor size (in KW),

We can use the Energy conservation law and namely the right side of it;

T_1+U_1 = T_2+U_2

T=\frac{1}{2}mv^{2}+ mg\Delta\mathrm{x} Delta X in height above the ground. Which is in our idealized system 0.

I weigh about *ahmmmm*…80Kg and the machine itself will weigh a max of 30Kg (we wanna go fast) so in total 110Kg

I wanna go 80Km/h for max speed.

So we get

T=\frac{110Kg}{2} \times (\frac{80000\mathrm{m}}{3600\mathrm{s}})^{2} Which is equal to about 27 KJ. I want to get to about 80km/h within 5 seconds. So to find out how many Watts we need, we can use the Power equation:

Approx Watts required: P = \frac{T}{t}\approx\frac{27KJ}{5\mathrm{s}}\approx5.4KW

So people can see what happened;

Alright. So in an ideal frictionless world. I’m looking for either a single motor at 5.4KW, or two motors half of that each (which I’ll ideally be doing)

Thats a nice start.

e^{\sqrt{2}}

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