Alternator Upgrade
After the battery upgrade it was now time for an alternator upgrade. Only a battery upgrade wasn't enough, a bigger battery needs a bigger alternator for proper charging.
An alternator suplies alternating current which is converted to direct current by a rectifier and puts out between 12 and 15 volt.
AC = Alternating current = WikiPedia
DC = Direct current = WikiPedia
An alternator suplies alternating current which is converted to direct current by a rectifier and puts out between 12 and 15 volt.
AC = Alternating current = WikiPedia
DC = Direct current = WikiPedia
The original one is an 8 pole stator, 1 fase alternator and delivers 114 watt at 5000 rpm. The new one is a 12 pole stator, 3 fase alternator from a Kymco New Sento 50i and delivers 150 watt at 5000 rpm. No changes have to be made to install the alternator.
The original wiring is made for a 1 fase alternator ande rectifier. The white wire give full power to the rectifier. The yellow wire doesn't use the full power of the alternator. It suplies enough power for the lights, but not to mutch to brake them. All lights on the Yager GT work on AC directly from the alternator, only the brake light is connected to DC.
The new alternator has 3 wires, 3 yellow - 3 fases. The rectifier has 5 wires, 3 yellow - 3 fases, 1 green - ground and 1 red - to the + on the battery.
This means I have to add 3 yellow wires to the wire harness to connect the alternator to the rectifier, connect the green from the rectifier to the ground and the red from the rectifier to the red of the original wire harnes
The original wiring is made for a 1 fase alternator ande rectifier. The white wire give full power to the rectifier. The yellow wire doesn't use the full power of the alternator. It suplies enough power for the lights, but not to mutch to brake them. All lights on the Yager GT work on AC directly from the alternator, only the brake light is connected to DC.
The new alternator has 3 wires, 3 yellow - 3 fases. The rectifier has 5 wires, 3 yellow - 3 fases, 1 green - ground and 1 red - to the + on the battery.
This means I have to add 3 yellow wires to the wire harness to connect the alternator to the rectifier, connect the green from the rectifier to the ground and the red from the rectifier to the red of the original wire harnes
The lights
With the original alternator the lights work directly from a stator of the alternator, this is not possible with the 12 pole stator. If you would connect your lights to one of the yellow wires from the alternator you would destroy your bulbs.
The lights are now directly connected to the battery by a relay. The relay is activated when the ignition key/comb sw is turned to on.
The lights are now directly connected to the battery by a relay. The relay is activated when the ignition key/comb sw is turned to on.
