Assume you have h36 with Limbach and not HK36 with rotax. 50 yrs, ago kiwis would insulate their say BOSCH RE55 regulator and have a, small resistor between the frame of car and regulator and this, was for cold winter months as then batteries could take more charge when cold. The kiwi would have a summer switch which would earth out regulator and thus more normal voltages.
Thus maybe your present regulator is not grounding out on frame correctly (resistive) or if old black box bin it. Remember your oil pressure switch and a relay controls the field winding. The replacement RE55 is bullet proof but remember to the connections right and in form of a T which is readily available connector from electrical/motor shop. Battery and field must be correct. A friend changed an old falke Limbach from original mechanical R55 to RE55 and got connections wrong and destroyed the regulator. If you have a HK36 then it may have a, ducatti regulator which is not much better than a bridge recterfier. They can heat up and go over voltage. There are after market ones much better. A quality rectifier keeps bolts between 13.8 V and 14.2 and then battery will last 5+years. Crook regulator 2 years if you are lucky. Have a read of Rotax regulator on the net. Ian McPhee 0428847642 On Sun, 3 Sep. 2023, 10:25 am Tom Preisser, <[email protected]> wrote: > While flying today I noticed that my voltage would go up from the normal > 14.3 to 14.6 volts to an occasional 15.3 volts. I am wondering if > anyone has any ideas or opinions as to what I should be looking for ? Loose > connectors ? Overheating ? Replacement types ? > What will happen if the regulator fails in flight ? Fire ? Avionics ? > > Thanks in advance for ANY advice, > Slacko >
