icecube57 said:
I wish the key switch could activate the wheel lock on infenions but that requires the controller to be on and wasting power..
If you are willing to take the chance that the relays might chatter on heavy vibration, and potentially short the controller while under load
then you could wire a set of NC relays up across the phases so that when the coils are not powered they short the phases. Then run the coils from the keyswitch power, so that when it's on the relays are off and the wheel is unlocked.
When you turn off the key, the relay coils turn off, letting the NC contacts short the phases together.
One thing you'd want to do is make some sort of time delay that doesnt' enable the controller until after the relay has powered on and let go the phases.
I think putting a fuse in line with each phase wire that goes to the relay would be a good idea--a fast blow at something like oh, 10A or less, so that it blows if the controller accidentally somehow powers on while the relays are still shorting the coils, so that the relay becomes disconnected from the phases and doesn't blow up the controller.
yohojomojo1212 said:
does anyone know how to bypass my electric scooters voltage controller and just hook up the throttle to the motor and battery? i already have the attery and motor hooked to an on/off switch but when i turn it on it is instantly at full throttle. so i would like to add a throttle to the connections. i dont have the controller thats why i am doing it this way.
If you don't want to use an electronic controller, there are a number of mechanical controllers you could build, but most require some machining of parts, and are typically quite large and bulky if they are to carry significant current (like for a scooter motor).
WIthout some sort of controller, your throttle cannot be used to vary the voltage to the motor from the battery.
There are very large potentiometers (or rheostats) that are intended for stage light dimming, and you could use one of those if you can find one. The one I have here is about 20lbs or so, and around the diameter of a small plate or large saucer, and a couple of inches thick. It'll do up to 1500W, so you might find one smaller for a smaller wattage, but it probably will still weigh as much as your batteries and motor, and maybe parts of your scooter.
I definitely recommend just getting a small brushed controller as mentioned in a post above, as that's easiest and probably cheapest. If you are handy with electronics, you can even build one fairly easily; there are a number of schematics around the web for them. If you already have the parts around, it coudl be cheaper than buying one, but if you have never made one before it's possible you may go thru a few FETs and things before it's up and running. (I did.)
