REFLECTOR: Using the starter supply(+) wire as a charge wire

[Terry Miles]

Thanks,Jim.  Sorry.  In a earlier post about this I mentioned, there will be
an 60a ANL current limiter between the B lead and the wire run back to
starter lug.

Terry

 

  _____  

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Jim Agnew
Sent: Saturday, January 27, 2007 3:44 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Using the starter supply(+) wire as a charge wire

 

You can do this however remember that the starter cable is like a welding
cable and without any circuit breaker protection so a short will cause a
fire!  That is the reason for the starter relay to minimize the length of
the unprotected wire.  You normally have a CB in the alternator power lead.

 

Jim


 

James F. Agnew
Jim_Agnew_2 at Yahoo.Com
Tampa, FL
Velocity 173 Elite Aircraft Completed & Flying 

 

----- Original Message ----
From: Al Gietzen <ALVentures at cox.net>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Saturday, January 27, 2007 12:34:00 PM
Subject: Re: REFLECTOR: Using the starter supply(+) wire as a charge wire

I talked w/ Skytec starters today.  On their web site they talk about an
alternative wiring scheme that eliminates the normal firewall starter
contactor which is required on certified span cans.  I can wire my starter
button directly to the coil/contactor that is bolted to the Skytec starter
instead doing the conventional route of contactor in the nose that then
ports juice to the Skytec contactor and its starter motor.

 

Terry;

 

I don't know about the Skytec, but typically the solenoid/contactor on the
starter takes a significant current, and has a very large in-rush current.
I think you'd would want a switch rated to 30-40 A; with spike suppression,
for reliability.  I used a automotive 40 A relay for the job (also with a
TVS) so I could use a light duty push button up front.

 

Al

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