Posts tagged: scooter

Making a shim for the motor shaft

By Jerome, July 8, 2009 12:13 pm

When I inserted the pulley on the motor shaft, there was some little side mouvement. It was not extremely major but I found this simple solution that could of fix this problem fast and it was free.

This sort of slack was due to me machining of the motor shaft. The “D” slot ( D-bore) was the problem.

The solution was to make a shim to go between the shaft and the belt pulley to prevent the mouvement.

motor_shim_shaft_ 001

The coke can makes perfect shim. It measure 0.0035″ ( 0.09mm)

motor_shim_shaft_ 002Very easy to cut and make the shape you want.

motor_shim_shaft_ 004

Making a triangle helps to insert the shim under the belt pulley.

motor_shim_shaft_ 005

motor_shim_shaft_ 006

With this solution, I was able to remove the slack in the belt pulley and the shaft. After a couple of hours on the scooter, I saw the shim disintegrated or simply not there when I remove the pulley from the shaft. It does work for a certain amount of time. The shim took the same colours has the shaft and was extremelly hard to see.

The first time I did not see it and the second time I removed the pulley from the shaft,  it was there but hard to see.

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My electric scooter

By Jerome, June 25, 2009 2:02 pm

Here is my project about my electric scooter.

I was always interested to build a electric moving thing. In may 2009, I when in France to see familly and one of my dad and my mom best friend. His son had this electric scooter that he was not using anymore and he did not have the battery. I told him that I wanted to modify one to make it go real fast. He then gave it to me for FREE! :)

A big thanks to Paulo!

I will explain how I modify this scooter and all my experimentation about it.

Can’t wait to ride it!

Jerome

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Motor weight

By Jerome, June 9, 2009 1:38 pm

Here is the weight between motors.

electric_scooter_2009_-0081

The brushless motor weight only 406grams compare to the 1Kg of the original motor.

electric_scooter_2009_-010

It is hard to believe that a motor half the weight is 14 time more powerfull. Time will tell…

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About the motors

By Jerome, June 9, 2009 1:35 pm

electric_scooter_2009_-0051

Here are my motors, the big one is the original motor. It is a 100W 24V DC.

The other small motor is a 1440W brushless motor. The maximum voltage is 36V.
1hp = 746W
so this 1440W motor = to 1.93hp

1440W divided by 746W = 1.93hp

I will round it to 2hp :P

DC motor are easy to control. You plug it to a battery and it turns. Brushless motor need a special controller that send a specific pattern to the motor.
I will post about that later on.

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The specifications

By Jerome, June 9, 2009 1:20 pm

Here is my project about my electric scooter.

I was always interested to build a electric moving thing. In may 2009, I when in France to see familly and one of my dad and my mom best friend. His son had this electric scooter that he was not using anymore and he did not have the battery. I told him that I wanted to modify one to make it go real fast. He then gave it to me for FREE! :)

A big thanks to Paulo!

I will explain how I modify this scooter and all my experimentation about it.

Can’t wait to ride it!

Jerome

Here is the picture of the weight of that scooter

electric_scooter_2009_-011

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