E-Bike/E-vehicle calculator

By Jerome, November 6, 2009 8:58 am

I have been searching the web for all kind of interesting stuff and found many good things.

Lately I have been following thread of this forum

http://endless-sphere.com/forums/index.php

This forum is a gold mine for people studying and making electric vehicule.

When searching, I found this thread
http://endless-sphere.com/forums/viewtopic.php?f=2&t=6892

and here is the specific post to download the software.
http://endless-sphere.com/forums/viewtopic.php?f=2&t=6892&start=75#p119810

scooter_printscreen

You can also make some graph  that can be useful.

scooter_graph_printscreen

You can enter all your info about vehicule to get some pretty good result. It give a good idea on the speed you can achieve. I am still skeptic about the distance I can go with the scooter compare to what the simulator told me. That is something I will be testing when I get my new motor.

Member swbluto is the creator of the simulator you just saw. He is also making a electric scooter.

You can follow the thread here: http://endless-sphere.com/forums/viewtopic.php?f=12&t=7638

Motor connections

By Jerome, October 27, 2009 5:27 pm

When I first installed the motor, I really wanted to test it. I did not have a motor controller so I when to see the guys from www.vamudes.com to borrow one of there 60Amp ESC controller. They did not have “gold bullet connectors” they had normal terminal connector.

making_connectors 001

I had to remove the “gold connectors” from the motor to change them with blue terminal connectors.

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You don’t want to cut those wires, each individual wire strand is covered with thin insulation. The insulation of each tip was remove. So if you cut the wire, you will need to remove the insulation. I recommend high power soldering iron , this  will melt the insulation. I use to take a open flame to burn the insulation… not good, the wire was black and was hard to solder.

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The connectors are now crimp to the wire.

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I was now ready to test my super scooter.

As we speak,  I have my controller and I soldered back the originals gold connectors.

Maker faire 2009 push scooter

By Jerome, October 19, 2009 8:50 am

When I was at the Maker faire 2009, I saw this neat scooter modification. I was able to ride it. It was awesome, the front wheel make the entire ride smooth and very stable. The ride was amazing!

It is so great, that I took picture just in case I wanted to build one :) Then I realise that I could make one using the same electric motor I have :)

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Back in Québec, I was able to find a razor push scooter for 1.50$ and a kid bike for 1$ at garage sell! The wheel on the kid bike is around 12 inch and I was planning to make it using a small wheel. I still want something portable if I enter a city bus or something like that.

I was also able to find a electric scooter for 18$.E100_electric_scooter_ 001

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I bought that scooter for parts. I wanted the wheels, batteries and other stuff. The scooter was working. I was going around 10km/h ( 6mph). I little to slow.

EVPlasmaman scooter

By Jerome, October 12, 2009 12:47 pm

When I was at the Maker faire 2009, I saw this guy pass me with a electric scooter. I remember seen that scooter on the internet, his personnal website http://blog.evplasmaman.com/.

I yelled  ” hey man” and he stop and we start talking. His name is Jos :)

He use a 3000W ( 4HP ) AXI 5345/18 GOLD LINE brushless motor.MAKER_FAIRE_2009_ 113

He also use Lithium Iron phosphate (LiFePO4 ) battery

The setup use 48 A123 cells.  4 cells in parallel and then 12 sets of those in series to make ~42Volts.

Is top speed is 20Mph. He also has a 3:1 planetary gear box. It turn out to be 4:1 with the ratio of the chain.

MAKER_FAIRE_2009_ 114

The gear box is from Matex gears.

You can find more picture here http://photo.gangus.com/v/Jos/scooter/ and on his personnal blog http://blog.evplasmaman.com/.

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My main power switch

By Jerome, October 3, 2009 2:37 pm

I just got this nice little cut off switch. The problem I had, is not having a nice and asthetic way to power my scooter. I had some dean connectors coming out of a hole and connected those wire together. No really nice seeing wire coming out. A member of the VamUdeS told me where I could find this neat little device: http://www.rctoys.com/rc-toys-and-parts/MPI-ARMING-SWITCH/RC-PARTS-CONNECTORS-WIRING.html They use that cut off to remove power to the main motor on there plane. A very safe way to know that you motor will go turn on, when you are checking under the hood. I use this device because I could not find a normal switch that could handle 40Amp and + of power without melting.

The “real” name is Battery Arming Switch ( Safely Arm and Disarm your RC ) Product number is MAXX 6970. This will be the main “switch” to power the entire scooter. The concept is very simple, you have a little loop of wire on the end of a connector. When you plug it in the other end, it close the electric path and current can now flow to the controller and motor.

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The only draw back of this cut off it the wire gauge is only 14AWG. It will work but one day I will probably need to go with 10AWG to make sure the wire will not get hot, meaning lossing precious energy in heat.

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