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.
I had to remove the “gold connectors” from the motor to change them with blue terminal connectors.
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.
The connectors are now crimp to the wire.
I was now ready to test my super scooter.
As we speak, I have my controller and I soldered back the originals gold connectors.
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
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$.
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.
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.
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.
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/.
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.
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.
I got my charger and my lithium battery from china. The charger is really high quality and very simple to use. It also balance each individual cell to make sure they will last longer and prevent damaging the entire pack.
This is the review I left on hobbyking.com site
I really love this charger. The concept of KISS ( Keep It Simple Stupid ) is 100% there with that product!
The build quality is very good, all aluminium. Charging is sort of very simple and stupid proof. It was a 5Amp car fuse on the back. It has rubber feet on the bottom. Some solid silkscreen/sticker on top. It is bullet proof!
When you plug a 3 cell into the charger, 3 RED led will glow and then after it is finish, it will turn to GREEN.
If there is a bad cell, the specific LED will flash from RED to GREEN.
You can charge battery using what they call “parallel” charging. So you charge your 3 cell with only 2 wire at 11.8V instead of 3 time 3.7V.
You need special plug to do that.
The fans does make noise. It is not that bad but it makes noise.
The only thing that I don’t like is the 12V car adapter. I don’t want to cut it and will need to make my own socket.
After charging my 4 cell battery. I had
my other battery was
I highly recommend this charger!
The battery had good reviews so I bought them and they where really cheap. These are 14.8V 5Amp battery. When charge, they go up to 16V. I will put 2 in series to get around 33.5V fully charged.
I had to solder some dean connectors on them since they came with 4mm gold bullet connector and I don’t use them in my scooter.
The connectors on the left are the deans connectors. I even took the time to put red and black heatshrink.