1990 US Marine Power Force 90 - RadioShack Rectifier (1 of 3)
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There are many problems with that, first of all most marine batteries sold nowadays are sealed. If you apply more than 16V DC charging voltage, they will degrade quickly and potentially can leave you stranded. If you install a regulator instead of rectifier, it will limit maximum output voltage to 14.4 V DC regardless of your engine speed. This will ensure long lasting battery life and will eliminate overvoltage problems with you accessories while under way.
grindkore 2 years ago
Shortly after making this video I have replaced the rectifier with a generic voltage regulator from a snowmobile motor. The problem with rectifiers is that they are unregulated. At high RPMs your stator can generate over 20V DC once the battery is fully charged, this will cook your battery very quick.
grindkore 2 years ago
Ok I went to radio shack and got a new rectifier and got it put on and you were right my tach reads where it should now. I'm taking her to the lake in the morning. Thanks again for the great videos and help!
duncan1482 2 years ago
It may fix some of the problems, however blown rectifier will affect tachometer signal more than anything. You may be getting false reading on your tach due to AC signal from your stator being grounded by a blown rectifier.
grindkore 2 years ago
Great vidoe! I have a 1989 125 Force and I have tried everything to try and get more rpms out of it but the best I can get is about 3500. I wonder now if this may be my problem as well. So did that fix your motor? What kind of rpms are you getting now? Thanks
duncan1482 2 years ago