Complete newbe questions

[RC Extreme Power]

I decided to take the plunge into electric bikes and change my chopper bike to electric power.

Bought this system, Probably should have bought the 36 volt system.
http://www.yescomusa.com/product.php?pr ... 728&page=1

Also bought the head light system here.
http://www.yescomusa.com/product.php?pr ... 184&page=1

Problem is it comes with no wiring instructions, I have got most of it worked out except for the head light, The connector coming from the head light has 3 wires and the only connector on the controller that matches the one from the headlight only has two wires.

Hoping that someone that has used this system can lead me in the right direction.

Also
What is the difference in a sensor motor and none sensor motor. Is hall sensor the same thing.

Can you reverse rotation by changing two of the power wires to the motor like we do with RC airplane out runner motors on a sensor and none sensor motor.

What do you mean when you say E brakes. ??

Thanks
Milton

[dogman]

I don't know about the headlight. Quite possibly it doesn't match your controller wiring in any way. The battery indicator would of course need a + and - wire to work. Presumably the light itself works on your 36v pack voltage as well, so I can't guess what the third wire does. Maybe popping it apart if it can be, will at least give you a clue which wires go to which part.

Brushless motors have three phase wires, as you likely know. Then a sensored one has five more thin wires to hall sensors in the stator. Sensorless runs without the halls to help the motor stay in synch, so a sensorless motor will have no wires or halls. A motor with sensors can run on a sensorless controller, just don't connect the halls. Some controllers now come so they can work either way. If a hall sensor stops working, the motor still runs in sensorless mode.

Among the combinations of phase orders possible, one should run good forward, and another backwards. Swapping two can reverse the motor. Particularly easy to reverse a sensorless motor, since there is no need to also swap halls wires.

Ebrakes have a reed switch in the handles, so that when you pull a brake lever, the controller is powered off. I tend to consider them pointless myself. But on bikes with brushed motors, they have a good reason to be. A brushed controller often fails in the full thottle position.

[RC Extreme Power]

Thanks for the reply.

So I can really sound stupid, if a motor will run without the sensors with a none sensor control. What is the reason or advantage of running a motor with sensors. ???

I have several year experience with RC plane three phase motors and they do not use sensors, But you can not have long power leads from the speed controller to the motor or you will fry the speed controller.

Hooked up the light to the connector with two wires and the power indicator and the light works but the key will not turn off power like I thought it would.

Do all of the controllers power up and stay on until you unhook the battery.

So the way it is now if I am riding the bike and stop for a hour or so do I need to disconnect the battery.

Thanks again
Milton
milton@rcextremepower.net

[dogman]

Ahhh, a keyswitch. I did not see that.

Many controllers have a big red wire that runs the full power to the controller. A second small red wire also connects to the battery to switch it on. If your controller has such a wire, you can connect that wire to the switch. You may or may not have to connect the battery to the red wire of the headlight directly depending on how it is designed.

The advantage of sensored controllers is a more positive synch of the motor. Generally a smoother start up, particularly when stopped on a slope. Some sensorless controllers have had issues with losing synch when really running high power levels. An RC motor on a prop will start up and pretty much run a steady speed. An ebike, particularly a higher powered one is getting whacked back and forth, on off on off.

[RC Extreme Power]

Thanks for the info.

Milton