First large scale aircraft
09-13-2005, 03:27 PM
#1
Junior Member
Thread Starter
My Feedback: (1)
Join Date: Aug 2004
Location: lilesville, NC, AMERICAN SAMOA (USA)
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
First large scale aircraft
I am ready to fly my first large scale aircraft( 31.5% Lanier Staudacher S-600 Zenoah GT-80) I have a Hitec Prizm 7X radio and PCM receiver. I intend to use 1650ma and 1200ma 4.8v battery packs each running through a switch with the second plugged into channel 7. I am doing this in case a battery or switch were to fail.I've heard of battery savers but I think this is the simpler way. Any ideas on this subject would be appreciated. Thanks!
09-13-2005, 06:00 PM
#2
My Feedback: (25)
Join Date: Jan 2002
Location: Cabot,
AR
Posts: 2,406
Likes: 0
Received 0 Likes
on
0 Posts
RE: First large scale aircraft
You might want to match the capacities... generally the larger pack will have lower internal impedance and will take most of the in-flight load (since the voltage will stay up under load), then during low demand phases (on the ground, etc) the smaller pack will try to recharge the bigger one... we're not talking huge currents, but it's current and battery wear you don't need. If you run similarly sized packs then thhey should drain evenly.
09-13-2005, 07:26 PM
#3
Senior Member
Join Date: Jan 2002
Location: Calgary, AB, CANADA
Posts: 400
Likes: 0
Received 0 Likes
on
0 Posts
RE: First large scale aircraft
Sorry, but there is no need to match the capacity of the packs. You **MUST** have the same number of cells, but that's it. I have used vastly different sized packs, and had no problems at all. What you'll find is that if you have 50% capacity left in one pack, you'll also have 50% capacity left in the other pack. This means that if you fly the 1650 pack down to where it has 825 left, the 1200 will have about 600 left in it. You should have no problems at all with this system.
HTH
Jim
HTH
Jim
