The DVR2 regulator unit is usually set to max 14.2-14.3V output. If the output charge voltage is measured above that with a seperate voltmeter that is known to be accurate then its either the regulator is toast or the wiring in the dynamo itself is wrong ie is there a link accidently shorting where the regulator sits in the field circuit.
It doesn't matter what the battery is as the output of the regulator is set by the regulator and not the battery.
Did you rewire the dynamo connections correctly when you fitted the DVR2 regulator as they connect differently to a JG. I seem to remember the JG regulator fits between the field winding and earth with the top of the field permantly connected to D. Where as the DVR2 sits between the top of the field and D and the bottom of the field is permanently connected to earth.
I used to build my own electronic dynamo regulators but now use the DVR2 which I have being running for approx 10 years on several bikes without a single problem. I'm just a satisfied customer.
Simon
It doesn't matter what the battery is as the output of the regulator is set by the regulator and not the battery.
Did you rewire the dynamo connections correctly when you fitted the DVR2 regulator as they connect differently to a JG. I seem to remember the JG regulator fits between the field winding and earth with the top of the field permantly connected to D. Where as the DVR2 sits between the top of the field and D and the bottom of the field is permanently connected to earth.
I used to build my own electronic dynamo regulators but now use the DVR2 which I have being running for approx 10 years on several bikes without a single problem. I'm just a satisfied customer.
Simon