Electric Skateboard Calculator | ESK8 Calculator - What size, Motor, Battery, Wheel, Belt to use?

General Discussion
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21

What size is your screen?

22

Yes, its just to calculate max current and torque of the motor :slight_smile:

23

Will change it, I always used my top voltage :slight_smile:

3 Likes
24

Can you send me PM with some pictures what are you trying to type?

25

Ahm, I added it to be steps of 10kv as it usually the case will change it :slight_smile:

1 Like
26

If you would like to share the formulas I would implement it, after quick search I didn’t found anything online.

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27

I will open up after I have done basics which I want to implement. Also I will fix how units work. I have done this in 3h evening so don’t expect much from first iteration :smiley:

28

well there weren’t any calculators which would calculate more than one motor :slight_smile: I added avg. consumption per motor as you only have access to one vesc usually to get info about consumption you enter that and I multiple by motor configuration.

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29

Great job. Thanks loads for the calc btw.

30

Haha thanks no worries :slight_smile: calc.esk8.today was my homepage basically :smiley:

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31

I can put them individually later

here is my old spread sheet that has them, sorry but they are kind of a mess, the new one is much better but doesn’t have this peak grade part since it’s build in the graph, maybe there is something you can use

Old one:

https://drive.google.com/file/d/0B64MF1WJuj0yQUdTcEpSNGJzLVk/view?usp=sharing

New one:

https://drive.google.com/file/d/15gsz0LiEjiuLc3wVriNmjd10ry1jlA7j/view?usp=sharing

1 Like
32

If you need any help I would be glad to. I’m profiting from your work afterall.

1 Like
33

Can the average 63km/h be realistic with 190kv 16/38 on 12s with 97mm wheels?

34

Was it average weighted speed?

35

image

old calc

image

36

13inch? 10char

37

Wow, Nice work!!! :+1: :+1: :+1: I like that site and always used it.

1 Like
38

@Gustdd here you go made it public :slight_smile: https://github.com/aurimasniekis/esk8_calc

@Pedrodemio @Maxid added avg Wh and max Wh :slight_smile:

@Bor.inc fixed the the issue with smaller screens now should be better

@pat.speed added total torque :slight_smile:

Next is to make shareable urls :slight_smile:

http://calc.3dservisas.eu

2 Likes
39

Added some features:

  • Browser history now after each change you can go back to previous and see difference.
  • Now you can share your calculation result with all inputs preserved by copying url

For e.g. this is my build:

https://calc.3dservisas.eu/?Nc6xDsIwDATQf_HMkDRtKawBMSFFqkR36FAkokTqWPHv-M50e3acszd5xkXO8nnXIgdZ46iFb8ikbKmoCs45FhdUvjNjprE-c7yyIiMAmOztX03jP66mtL8zKnQkmj1pQeBrsc3kVXkK5ANbW7QzBnBu5uEDe6nALak62gU5lv3YeVpJpM23u3qgJpzIAS5z8v0B

40

This is the torque after reduction, right? Afaik torque in vehicles are measured at the engine shaft, not wheel axle. Still impressive though