Mailing List flyrotary@lancaironline.net Message #21843
From: Ian Beadle <ianb@ozzienet.net>
Subject: Re: [FlyRotary] Re: Hot Alternator???
Date: Sat, 14 May 2005 21:14:09 +0800
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
 
----- Original Message -----
Sent: Saturday, May 14, 2005 11:51 AM
Subject: [FlyRotary] Re: Hot Alternator???

For those of you in the know, is it normal for an alternator to seep current and get warm when the field coil is powered up?  Is this something I need to fix?  If so, should I cancel my trip?  I think it has probably been going on for a long time but...

Dave Leonard

 
I've noticed the same thing Dave.  I was surprised how warm it got, but I knew it was flowing current, so I figured it was normal, and didn't really investigate.   In other words, have a good trip :-)
 
Rusty
 
Dave
The field current is controlled by the regulator, which is usually internal. The regulator will only allow field current if the armature is spinning and bat. below about 14 volts. A small amount of current is allowed at start up via the little red light to give initial voltage.
In short get the regulator checked.
 
Ian Beadle.




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