---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 12/25/11: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:18 PM - Relays (Bill Nelson) 2. 09:16 PM - Re: Relays (Bob Meyers) ________________________________ Message 1 _____________________________________ Time: 08:18:01 PM PST US Subject: AeroElectric-List: Relays From: Bill Nelson What is the difference between a battery relay and a starter relay? I have a Rans S12S and the circuit diagram for the Rotax 912ULS engine shows both. But I just got the plane and it only has what I think is a starter relay with the rotary starter switch and a simple SPST master switch. Do I need to add the battery relay? Bill Sent from my iPad ________________________________ Message 2 _____________________________________ Time: 09:16:05 PM PST US Subject: Re: AeroElectric-List: Relays From: Bob Meyers Among other things, a battery contactor is designed for continuous duty and typically draws about 3/4 of an amp when energized. A starter contactor is designed for intermittent duty and draws about 5 amps when energized. Bob Meyers Flying my Sonex N982SX - Building log at http://n982sx.com Sent from my iPad On Dec 25, 2011, at 10:13 PM, Bill Nelson wrote: > > What is the difference between a battery relay and a starter relay? I have a Rans S12S and the circuit diagram for the Rotax 912ULS engine shows both. But I just got the plane and it only has what I think is a starter relay with the rotary starter switch and a simple SPST master switch. Do I need to add the battery relay? > Bill > > Sent from my iPad > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.