Hello again,
I realize that I asked this question before in 2004 but actually never got an answer (I did get very good answers to all my other questions).
In 2004 I installed a rectifier on my 1982 Johnson 25HP outboard to charge my battery. I used that engine to commute to work every day, mostly idle speed, and it worked very well.
The engine has been stored for two years now and I recently put it back into service again. It needed a new fuel pump and a complete rewiring a carburator overhaul but I love the way these old engines never seem to fail you.
When re-wiring the engine I checked the voltages coming out of the rectifier and noticed that when I rev the engine the (dc) voltage shoots up to 18 volts (no load, just volt meter attached). I have the battery directly attached to this rectifier and this doesn't seem good. The use of this engine will be changing now. I will be using it at high RPM for most of the time and low RPM coming into the lock, and to my home.
My question is, do I need a voltage regulator on top of the rectifier to properly charge the battery (12 volts, 80 amp, used for lights, water pump and charging my VHF etc...)?
Thanx in advance!
I realize that I asked this question before in 2004 but actually never got an answer (I did get very good answers to all my other questions).
In 2004 I installed a rectifier on my 1982 Johnson 25HP outboard to charge my battery. I used that engine to commute to work every day, mostly idle speed, and it worked very well.
The engine has been stored for two years now and I recently put it back into service again. It needed a new fuel pump and a complete rewiring a carburator overhaul but I love the way these old engines never seem to fail you.
When re-wiring the engine I checked the voltages coming out of the rectifier and noticed that when I rev the engine the (dc) voltage shoots up to 18 volts (no load, just volt meter attached). I have the battery directly attached to this rectifier and this doesn't seem good. The use of this engine will be changing now. I will be using it at high RPM for most of the time and low RPM coming into the lock, and to my home.
My question is, do I need a voltage regulator on top of the rectifier to properly charge the battery (12 volts, 80 amp, used for lights, water pump and charging my VHF etc...)?
Thanx in advance!
