1487Views5Replies

# Motorized rollerskates, how do i calculate which dc motor to use? Some better than others? Answered

I'm going to try and fulfill one of my childhood dreams; making a pair of electrically powered rollerskates.
However i'll need your help if i am to succeed!

I have decent knowledge of soldering and the electronic circuit wont really be a problem - i'll wire everything to an arduino duemilanove

So here's my questions:

1. I'll need a motor, is there a specific motor type that is best suited for the purpose?

numbers:
speed range: 0-20km/h (~12mph)

Something like this, but in rollerskate format: http://www.skateelectric.com/index.php?option=com_content&task=view&id=38&Itemid=45

If anyone could point me in the right direction in regards to motor type and motor calculation i'd be really really grateful.

I know that voltage is equal to velocity and amperage is equal to torque - and that torque is used as force to drive the wheels under pressure/friction.

I've done quite a lot of research already, but i always hit a dead end, nothing here on instructables seem to cover the topic regarding dc engines - and no, i'm not insane enough to power a pair of rollerskates with an angle grinder - i want to have fun, not carve up the pavement and break bones (or spontaniously combust)

I'll do an instructable on this if i get it working, all i need is help with the motor, i'll do the speed regulating myself and all that jazz.

Tags:

## 5 Replies

airecrist (author)2010-01-26

if only they made hub motors that small...then it'd not only work well but look nicer

lemonie (author)2009-05-19

Someone did do this with electric-drills didn't they?
Do you know what I'm thinking I remember?

L

Eirinn (author)2009-05-20

I'm afraid i'm quite puzzled as to knowing if i know the thing you're remembering.

Although i did do an alternative search based on your answer and found this:
https://www.instructables.com/id/Electric-Mountain-Board/

An electric scooter motor seems a bit overkill for rollerskates though, maybe something smaller? Or maybe you remember the thing you think i know that you remember? :D

lemonie (author)2009-05-20

Couldn't find it. If I remember where it is I'll let you know. L

Eirinn (author)2009-05-20

Actually the motor isn't that big...it might just work, plus if i use two they'll have to work half as hard - i'll see if i can draw up some viable diagrams.