Help, Battery Data

Bill Greenwood · **Posted:** Wed Dec 12, 2007 2:16 pm

Can anyone who is a computer whiz(most everyone compared to me) tell me the weight of battery: Globe model GC 12-550, use to be made by Johnson Controls in Milwaukee, since sold the co. ? Also the power rating? THANKS, it is for C G calculation, see annual under maintenance.PM me if you'd like. Thanks guys, you got it !!!

Old SAR pilot · **Posted:** Wed Dec 12, 2007 5:32 pm

Bill,

Might try this address/number. All I could find so far...

Johnson Controls Inc Globe Battery Div
1550 Kimberly Ave, Fullerton, CA 92831, (714) 871-7740

Also this site - dunno if it'll help (it's specs for a replacement bty):

http://www.apexbattery.com/johnson-cont ... eries.html

Bill Greenwood · **Posted:** Wed Dec 12, 2007 5:40 pm

Got the info from Sully and Old Sar. Thanks very much. As I suspected the new battery is 12 lbs heavier than the GC one that was in there when we weighed the plane to compute CG, so we will have to make some adjustments, 12 lbs in a 7000 lbs plane may not sound like much, but when it is far aft behind the rear seat it makes a difference.

retroaviation · **Posted:** Wed Dec 12, 2007 5:59 pm

Bill Greenwood wrote:

Got the info from Sully and Old Sar. Thanks very much. As I suspected the new battery is 12 lbs heavier than the GC one that was in there when we weighed the plane to compute CG, so we will have to make some adjustments, 12 lbs in a 7000 lbs plane may not sound like much, but when it is far aft behind the rear seat it makes a difference.

But don't you also have lead in the tail that can be removed to make up for that? I don't know why, but I thought for sure your airplane had some ballast installed in it at some point in it's life and that it was still there. Maybe I'm thinking of the wrong airplane.

Gary

bipe215 · **Posted:** Wed Dec 12, 2007 7:19 pm

Does this mean the 185# limit in the rear seat is going to be lower?

Steve G

Bill Greenwood · **Posted:** Wed Dec 12, 2007 7:27 pm

Darn Gary, you are pretty smart for a radial guy. Yes, there is one weight plate in the tail, so Tim can machine that down. Thanks for the help, guys I had searched the internet to no avail since that model seemed discontinued.

Warbird Information Exchange

Help, Battery Data

Who is online