White wire succses story!!!!

[creamed_Emu]

white wire problem solved

Hey guys, just read about your troubles. i put together a rectifier and cap and measured the output. 7 to 12vdc Any load kills the spark. Seems the positive half cycle charges the CDI module and the negative half triggers it. any loading on the negative disrupts the CDI, so im using a single diode to load the positive half of the cycle, charging a 6v 4Ah battery, running a 1w led lamp, charging My nokia. No trouble starting, no negative effects when riding. The setup has been running for 100km now with no problems. Hope this helps

Ben.

 

[ZnsaneRyder]

Ben, that helps a lot and answers some of our questions! If you are charging a 6V battery, that's nice to know that there's enough power to do that!

 

[nadroj]

Hey guys, just read about your troubles. i put together a rectifier and cap and measured the output. 7 to 12vdc Any load kills the spark. Seems the positive half cycle charges the CDI module and the negative half triggers it. any loading on the negative disrupts the CDI, so im using a single diode to load the positive half of the cycle, charging a 6v 4Ah battery, running a 1w led lamp, charging My nokia. No trouble starting, no negative effects when riding. The setup has been running for 100km now with no problems. Hope this helps

Ben.

any more info on this, do you have to ground the neg on the battery to the motor. what is the part number of the diode?

 

[heathyoung]

A normal power diode - IN4001/IN4007 would be fine.

 

[creamed_Emu]

any power diode that can handle at least an amp will do, as heathyoung said. Earth the battery's negative somewhere to the motor. Wrap the diodes around a small screwdriver or coathanger to give it little spirals for stress relief against vibration. Hope this helps, ben

 

[nadroj]

yes that helps, did you make a bridge rectifier? I was thinking that may be the best way to go to help keep the battery better charged

 

[creamed_Emu]

a bridge would load down the negative too much to give a reliable spark. Im working on a circuit to modify the spark timing, and noticed the cdi shunts all power greater than approx 2v on the negative cycle. This can be avoided with a few components allowing you to extract every last watt from that white wire. Ill post my progress as it happens or PM me if you'd like to help out. Ben.

 

[impression]

could i trouble you for a mspaint diagram of the wiring ?

i'm keen to go with the following

White > Battery > light

and also put a solar panel in aswell to charge the battery during daylight hours and have the white wire charge the battery when the bike runs.

I got White > light going, but the bike won't start, i guess it's putting too much strain on it, this is why i want it to 'drip' charge a 6v battery aswell as the solar to help that way i'd have enough juice in the battery for the ride home when it's dark

 

[duivendyk]

BSA, do you have a multimeter (volt/amp/ohm?.

 

[BSA]

BSA, do you have a multimeter (volt/amp/ohm?.

yup read about 4.5 volts at idle ad 6volts if you give it some gas.

BSA