thanks Ian, i have an h36, s.n.3506, with a motorola solid state voltage regulator. wiggled my spade connectors (field, relay, battery positive) this morning and saw no reading above 14.6 v. during todays' flight. Bought a replacement as insurance if my unit misbehaves again. Twenty US dollars. So maybe it was my Davtron voltmeter/oat sensor giving a spurious result (?). Dunno, but I'll take a spanner to hand tomorrow, loosen the unit, and clean the connection to ground . You are a rare and precious individual in your grasp of electronics - I wish you were here... wait, sorry, I wouldn't wish that on any good soul.🙂 Cheers
On Sun, Sep 3, 2023 at 10:09 PM Ian Mc Phee <[email protected]> wrote: > 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 >> >
