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Post by re5martin on Apr 8, 2012 5:40:06 GMT -5
HI guys, hope everyone is enjoying the damp Easter weekend, been in the shed today messing with the old re5m . i have recently fitted a new rectifier from RR but the wires to and from the rectifier and the live feed from the battery are still getting extremely hot but if i turn the headlight on all goes cool , should i presume overcharging ? would a duff regulator or generator be the cause  martin. |
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gerryggg
2nd Gear
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Posts: 225
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Post by gerryggg on Apr 8, 2012 7:21:22 GMT -5
Hot wires from the charging system are pretty common on Japanese charging systems. If I recall correctly, the regulator on the RE5 is adjustable. You might want to check the charging voltage and amperage and try adjusting the regulator. If the wires cool when the load is increased (i.e. the lights are turned on) it might be a simple case of too much charging when the load is light and an adjustment might do it.
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Post by mike500 on Apr 8, 2012 12:05:53 GMT -5
a duff regulator can cause overheating of the wires it wont be the gen as a rule you should have about 13.2 v at battery when running
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Post by re5martin on Apr 10, 2012 12:38:42 GMT -5
thanks for the imput, i did not get back to the shed this weekend but hopefully this coming weekend so will check the voltage and pull apart the regulator to see what can be adjusted.
martin
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Post by wayne on Apr 16, 2012 18:29:44 GMT -5
Here is an old post from the old board from Werner. I cannot vouch for it's integrity but came across it and it may help:
The rectifier is a 3 phase diode bridge that takes the
3 phase AC from the alternator and forms it into DC.
The altenator has 3 yellow leads out, one for each
phase, into the diode bridge.
The bridge creates DC out between its red lead and
ground.
If the red lead is getting overheated, there is too
much load on the system from the bike.
If a yellow lead is getting overheated, most likely
one of the 6 diodes in the rectifier has gone bad.
If a wire is over heating at AT a connector, the
contact in that connector is suspect.
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Post by bdalameda on Apr 16, 2012 21:30:30 GMT -5
It is fairly normal for the yellow wires to get warm. If things are getting hot then start looking at connections inside the plugs - melted plugs are pretty common and have caused quite a few RR failures. A quick check for the alternator is to run the engine at a fast idle with the three yellow leads disconnected from the RR and check the AC voltage between each combination of two yellow wires. The voltage should always be equal between any pair of yellow wires. If one combination of two yellow wires is reading much lower this indicates that one of the alternator windings is bad. Since you will be reading unregulated AC output directly from the alternator don't be surprised at readings as high as 90 volts AC. There is a voltage spec for AC output at a particular RPM but it really is not that important - what is most important is having balanced output between any two leads.
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martin.
