Bike auto electrician wanted - Christchurch

[ODB]

So my wee Honda CG125 keeps popping its headlight from over revving (AC - 6V system)

I know that these are notorious for doing this - it even blows the 12V bulbs I put in!

Wanting to find someone who can sort out a bit of a solution for this problem.

Any recommendations for a local auto electrician who is good with bikes? i have rang a few places and no one does bikes it seems!

[gammaguy]

Put a new battery in it after replacing all the blown bulbs with the correct ones

Then check your charge rate

If still too high...then it will be your regulator rectifier

[ODB]

Its my understanding that this bike runs 2 seperate electrical systems:

1. DC via regulator/rectifier

2. AC - headlight only with surplus voltage going into frame

FWIW my first port of call was for a new battery - all other electrics run fine apart from the headlight. Was thinking worst case scenario an auto sparky could put in a zenner diode or something and run excess current off but its beyond my expertise!

[HenryDorsetCase]

Its my understanding that this bike runs 2 seperate electrical systems:

1. DC via regulator/rectifier

2. AC - headlight only with surplus voltage going into frame

FWIW my first port of call was for a new battery - all other electrics run fine apart from the headlight. Was thinking worst case scenario an auto sparky could put in a zenner diode or something and run excess current off but its beyond my expertise!

Not so much. your bike produces alternating current because it has a (wait for it) alternator on the end of the crank. the output of that is converted by the rectifier into a Direct curret which is REGULATED to say 14.4V. Those two things make up your reg/rec. That nominal 12V dc (or 6 in your case) is then reticulated round your bike to the various electrickery bits that need it: the headlight is a large current draw (50W @12V implies four and a bit amps.... so if it gets more than it needs then it responds by going bang. In effect it is the fuse in the system. So check the alternator, check the reg/rec, check the battery, scheck connecctions and such and take it from there.

Rodger from Road and Race 3828410 helped me out with some electrical issues with my VFR: top bloke, great service and reasonable prices......

[neels]

Does it have the strange arrangement where there is an extra coil switched in on the alternator when then headlight is on to provide some extra volts?

I had a problem on one of my bikes with this setup that had an intermittent connection to the headlight bulb. When it disconnected the voltage bounced up enough without the extra load and popped all the other bulbs as well as the headlight when it reconnected itself.

[ODB]

Nah doesnt appear to be an intermittant connection problem.

clearly blows in response to over enthusiastic revving.

TBH if I think about it then I can control it as such - just a pain in the ass

[HenryDorsetCase]

Nah doesnt appear to be an intermittant connection problem.

clearly blows in response to over enthusiastic revving.

thus implying a faulty reg/rec..... old hondas are famous for this.

[ODB]

Yep checked regulator tonight - appears that one of the two pins has sheared off and stuck in the plug.

Probably getting no connection or intermittent connection.

Am trying to track down a plug and unit and will solder the two wires and hopefully it's all good