Mailing List flyrotary@lancaironline.net Message #52465
From: Kelly Troyer <keltro@att.net>
Subject: Re: Permanent Magnet Alternators
Date: Tue, 5 Oct 2010 15:39:00 -0700 (PDT)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Lynn,
   Any idea what amp output would be for your motor used as an alternator after diode array
and regulated to 12-14 volts ??.............
 

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo




From: "Lehanover@aol.com" <Lehanover@aol.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, October 5, 2010 4:50:00 PM
Subject: [FlyRotary] Re: Permanent Magnet Alternators

In a message dated 10/5/2010 4:47:46 P.M. Eastern Daylight Time, echristley@nc.rr.com writes:
Lynn, do you have any documentation stating a max RPM?

--
In the tech data the KV rating times the voltage applied gives you the prop RPM per volt. Usually 11.7 or 22 volts from Lipo batteries.
 
Virtually unlimited RPM as an alternator, as no copper is moving at all. No brushes to wear out or sparking.
 
For example a 670KV motor with 11.7 volts and a medium size prop about an 11" by 6" will turn up 7,839 RPM. You can hover a 5 pound 60" wingspan plane with that. They don't even get hot. Mine was $28.50.
 
Lynn E. Hanover
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