Mailing List flyrotary@lancaironline.net Message #3930
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Alternator wires
Date: Fri, 17 Oct 2003 23:00:06 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
So basically you hooked both wires to 12V - right? 
 
Yep, but with the diode that's shown in the drawing.
 
Are you using a contactor and crowbar setup to diconnect the B lead in case of overvoltage? 
 
Nope.  Modern alternators are reliable enough for me.  I'm also not so sure that the alternator can produce voltages high enough to hurt anything, except maybe the battery, eventually.  When I first hooked mine up, I put a switch in the circuit, thinking I could shut off the alternator.  All I managed to do was cause several different variations of unregulated voltage.  It never went over about 18V, which is well within the range of what most 12V items can tolerate. 
 
Jusr curious - why not use the alternator warning since it's there. 
 
I figured someone would ask that :-)  I didn't want to mount another warning light, since I plan to have the (say it with me <g>) EM-2 watching the voltage.    
 
Rusty
 
 
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster