73 Evinrude 125 overcharging

[hootey135]

I have an Evinrude starflight 125 outboard that is showing 16 volts when at idle, and the meter pegs when at full throttle. I recently charged the battery. It reads 11 volts on a voltmeter when boat is off. I have read that this is normal, but my new humminbird fish finder doesnt like it. Any suggestions?

 

[DJ]

Re: 73 Evinrude 125 overcharging

hootey,<br /><br />That engine has an "unregulated" system.<br /><br />There is no way around it except to have a constant load on the electrical system (leave something on) or a resistor in-line to your electronics.

 

[hootey135]

Re: 73 Evinrude 125 overcharging

Thanks a bunch. Would an automotive regulator work? Which electronics should I regulate?

 

[Jerry M.]

Re: 73 Evinrude 125 overcharging

Hootey, My Merc does a similiar trick at full power. 14V at idle and 16V at full power.. However, I put a portable V-meter which I know is accurate, on the clip coming from the rectfier, and it shows 14.5V at full power. My dash V-meter is off a volt or two. The manual for Merc's say don't trust the dash meter, test the volts with a seperate meter. Mine is also not regulated by the way.<br /><br />Jerry

 

[G DANE]

Re: 73 Evinrude 125 overcharging

I dont know by you, but here ist able to get an automotive low current voltage regulator for dash gauges for cars. Cheap, and keeps current at 13,2 V - solved my problem on old boat, temp gauge showing constant overheat after 20-30 min wot - motor NOT overheated. I think it was from a Ford.

 

[hootey135]

Re: 73 Evinrude 125 overcharging

I checked the voltage with my multimeter to make sure the dash guage was alright, and the results were identicle. I just want to make sure I wont foul up the ignition, or motor in any way. If not, I will get a regulator and keep or boating. Thanks 4 replys guys. Much appreciated.