REFLECTOR: battery

[Randy Wharton]

Hi, Grigore,

Until you get close to flying, any old 12 volt battery will do the job. When
I was working on my speed brake, I was using the 12 volt battery out of my
riding lawn mower. When I start getting more electrical load wired up, I'll
just get an Autozone (cheap) battery to use until I get ready to buy the one
I plan to fly with which will cost more.

And yes, switching the red and black wires will reverse the speed brake
actuator. The double pole, double throw switch accomplishes the same thing
once you get it all wired up. And you'll find that the actuator has built-in
cutoff switches at each end of its travel, so it's possible to install the
system without using a micro-switch to switch off the actuator in the closed
position. I have photos and explanations of how I did mine on my website:
http://clik.to/velocity

Randy

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Grigore Rosu
Sent: Wednesday, February 01, 2006 7:41 PM
To: reflector at tvbf.org
Subject: REFLECTOR: battery

Hi,

I am a new builder of a SEFG (fast-built) and I have already finished the 
speed brake and the control system (most of it in the head start program). 
Now I'd like to try the speed brake actuator as well as the trim (the one 
in the fin of the keel).  Therefore, it looks like I need to buy a 
battery.  Which one to buy?  Are there any suggested batteries for 
experiments during building?  I guess building will take several years, so 
I may want to buy another battery anyway for the final installation ...

Also, I see that the trim has only two wires going out, a black and a 
red one.  Should I just swap the + and - to get the two different rotation 
directions?  And since I am at the silly questions, should I get a 6V or a 
12V battery?

Thank you,
Grigore
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