Esk8 Engineering Presentation

General Discussion
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@ZackoryCramer @e.board_solutions

I linked the presentation so far if you want to take a look. It is in edit in the original post.

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I don’t have acces, I would be interesting to have a good presentation others could use aswell :slight_smile:

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Fixed. I would be happy to upload the presentation when it is completely finished, the more publicity the better!

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You should try explain the electronics with the water analogy. Easier for younglings to understand

Battery = bottle of water. High discharge = 1 litre bottle with big cap, low discharge = wine bottle

Current = amount of water passing through Voltage = water pressure Resistance = tight neck or pipe restricting water flow Switch = valve

Motor = water wheel, more pressure (voltage) = more speed. More water (current) = more torque. Low kv = big water wheel, high kv = small water wheel

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Voltage, I push that. Resistor, I hold that. Current, I flow that.

:wink:

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13

I fully Disagree with what you’ve said about scooters being safe and longboards Unstable. Here is something me and @Deckoz wrote up about the scooters and longboards,

hjhj
hjhj1205×660 129 KB

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This is so true. Also the difference between skateboarders and longboarders. Helmets aren’t even a question when it comes to longboarding

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15

That does make a lot of sense actually. I will change that. Are scooters more stable than long boards though? There really isn’t much opportunity for speed wobble in a scooter as far as I can tell.

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I like that idea. I explained how the motor works using a cat chasing its tail.

Tail=magnetic fields created by stator coils Head=magnets in rotor

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If you let go of the scooter handles your wheel will make you fly off somewhere, And if you fall from standing position Like holding scooter handles you will have a bigger impact on the ground. these are just some things that are easy to explain. Don’t want to get into the whole topic of how longboard trucks are stable across 4 wheels speed wobbles only occur when riding loose etc.

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And why write “smaller wheels=less torque required” I mean Lower gearing, lower motor KV = more Torque, It seems like a desperate attempt to seem smart,

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Its not a desperate attempt, the rest is explained later. That was one of the main factors in the decision before even starting research on motors and all that, so I thought it necessary to put it there. I changed the electric vehicles slide to match more with what you are saying.

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cool dude, Like your build its just like mine just I got 9s higher amperage cells. oh and 25mph+ more like 23mph ( if you use the keda 190kv.).what 8s lipos will you use? If there like 20c then you’ll get voltage sag uphill.

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i’ll ask some of my friends (high schoolers) for questions and i’ll share

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Thanks! I plan to use Li-Ion cells (10s?p) in the future, and larger wheels for more speed. I use 20c right now. Not many hills in my area, so I opted for the cheaper option right now. DEFINITELY gonna upgrade in the future for that reason.

I plan to do a full build log at some point, just need to get my new vesc… shorted the phase wires…

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23

Sounds good! Thanks!

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Thank you for making it easier for a 36 yr old man to understand! :expressionless:

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Can anyone provide a simple explanation as to how a vesc, or any esc works?

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The DRV or whatever drive chip outputs waves into the 3 phase wires of the motor syncing up the electromagnetic forcefields from the stator with the magnets in the rotor. More on that here:

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Anytime. I’m your #1 source of 15 year old wisdom

1 Like