e-bike earthing

6 replies [Last post]
mygrumpy
Offline
Joined: 02/26/2008
Points: 10

Hi All.Just turned my mountain bike into electric.i mounted the battery pack on plastic sliders then on to a alloy rack.pluged it all in turned the key nothing.put on the ground pluged it in,it worked,how do i get around this.thanks for any help. John

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
chas_stevenson
chas_stevenson's picture
Offline
Joined: 12/06/2006
Points: 1309
Re: e-bike earthing

Do you have the batteries connected to the frame? If so remove that connection, a frame connection on an e-bike is not needed, you may have a short if a positive wire is touching the frame somewhere. Other than that without more information on the motor, controller, and other parts I am at a loose to your problem.

Grandpa Chas S.

mygrumpy
Offline
Joined: 02/26/2008
Points: 10
Re: e-bike earthing

Hi. No the batteries are not connected to the frame. they are in a box, which slides on to a plastic holder.which bolts onto a alloy rack.the electrics are off a E-Zee bike which broke the seat tube. John

chas_stevenson
chas_stevenson's picture
Offline
Joined: 12/06/2006
Points: 1309
Re: e-bike earthing

Maybe I am missing something here. When the batteries are on the bike it will not drive the motor and when removed and placed on the ground with wires connected to the batteries the motor runs? Is this right?

Chas S.

mygrumpy
Offline
Joined: 02/26/2008
Points: 10
Re: e-bike earthing

Hi.Yes

chas_stevenson
chas_stevenson's picture
Offline
Joined: 12/06/2006
Points: 1309
Re: e-bike earthing

I would be checking the wiring on the bike there is a bad connection or you are shorting the battery pack. Place a meter on the battery output and turn on the main power switch, if the voltage drops rapidly you have a short.

Grandpa Chas S.

mygrumpy
Offline
Joined: 02/26/2008
Points: 10
Re: e-bike earthing

Hi. Thanks for your help Chas. john

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
High Voltage: The Fast Track to Plug In the Auto Industry A behind-the-scenes look at the robustly competitive race to dominate the market for electric cars.
Customize This