I am continuing to fool with the charging system. I found that the red wire connection at the 3-way plug to the rectifier was intermittent. I was checking voltage at the rectifier output and the battery and it was different. I found by tweaking the plug it would change. Nothing I did seemed to solve this so I finally jumpered the red wire around the plug to solved the problem.
In the process I may have toasted my stator. Does anyone know what the OHM reading is between the brown and yellow wire and the brown and pink wire. Some information I have read indicates that pink side stator coils were wired with different gauge wire resulting in different OHM readings. Check with stator unplugged.
Thanks - Don (Cadman)
More alternator infoFrom what I have read then the resistance is between 0.7 - 1.2 Ohms. As you say there is a difference in the wire size & number of turns (4 coils in the smaller wire & 2 in the larger wire). This doesn't make a massive difference to the resistance though.
Another check worth doing ius continuity to ground to see if the insulation is breaking / broken down. Also could check the AC voltage output with the engine running. I'm in the throws of rewinding my stator to suit a modern 3 phase combined reg/rec as I want to dispense with the coil switching setup of the standard system & thus minimise the wiring. Once I've completed this I'll post some detail on here as when I asked the question nobody answered which would suggest that either people don't know or can't be bothered / don't want to answer - not sure which. Stew I have a second used stator on the way (from a CL77 - fairly sure it is the same)- I have done all the checks that you can do and everything seems okay but still not getting enough AC voltage from the pink wire. Seriously considering a stator rewire. Would probably rewire with same wire on all coils then look for a regulator/ rectifier to use rather then the current system. I have a local fellow that rewinds automotive stuff and I think he would help with a rewire.
Much like you I find little info about this on websites. Have talked to several guys from the "Honda Twins" site. They have used the solid state regulator/rectifier from a stationary Onan engine and it seems to work okay. Resistance I am getting is about 1.9 OHMS from the pink/brown and about .9 from the brown/yellow sire. Open to ground. Charging systems are fairly universal so bits from anywhere should work, just the vibes on bikes can shake things to bits!
Might be worth checking your rotor as they can lose magnetism over time which will of course affect the output of the Alternator. This will be made worse if anybody has tryed to heat it to remove it from the engine..... I've got a mid '80s honda reg rec (came from a CX500 I think) as it was free & looks to be in quite good condition. Wire arrived for the rewind today so I just need to make the former now & wind the 6 coils... Stew
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