REFLECTOR: Batteries

[Terry Miles]

I am going to tack on to what Jim has said here.  I have a pair of 925s that
is run to isolated buses for pre-flight and start up ground ops.  I then
switch to parallel ops when the alternator is on line.  I have the batts
over on their side and worry about the bolts getting loose w/ vibration.
The metal is very soft so you can't honk down on the torque with abandon,
and there is not a lot of working space to fit a wrench.  

 

Ditto too on planning for access for ground charging, and for relative ease
of removal/replacement out the top hatch as Jim points out.  As everyone has
pointed out the 925 has plenty of power, but remember if you use the lighter
skytec starter you have to get something like 10v back to the starter coil
so it can do it's thing and port all that juice to the starter itself.  I
have had trouble in that department.  

Terry

 

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Jim Agnew
Sent: Monday, July 20, 2009 18:45
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Batteries

 

OK Brooke here we go,

 

Start with the top terminal battery and bolts for really reliable
connections and it  is easist to get at the terminals if you need to hook up
a charger or anything else. 

 

I have a metal cased battery and by the use of a thin putty-knife you can
separate the steel case from the battery (the battery people recommend this)
drill some holes in the bottom and countersink for some SS flat head machine
screws and bolt the case to the battery tray (4-6 # 10 machine screws will
do nicely) and you have a very strong battery box that you can drop the
battery in or replace it. You can either buy a battery hold down at an
automotive store or make your own.

 

I like to place the terminals closest to the hull to keep them as far away
as I can from anything that might come loose and short. I also prefer the
positive terminal closest to the canard bulkhead if possible so I have the
lead to the Master solenoid is as short as possible.

 

Remember if you use the steel battery box that you must have enough space to
get the battery in with the upper fuselage in place. It also has to go thru
you access hatch so check carefully.

 

Jim

 

 


 

James F. Agnew

Jim_Agnew_2 at Yahoo.Com

Tampa, FL

Velocity 173 Elite Aircraft Completed & Flying

 

 

  _____  

From: Brooke Wolf <bwolf1 at tds.net>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Monday, July 20, 2009 5:52:20 PM
Subject: REFLECTOR: Batteries

I was contemplating installing the battery tray on my XLRG-5.  Like
everything else, one thought leads to another and pretty soon I am thinking
about the entire electrical system and still not getting anything done!
Well, I know 2 things for sure....I'm going to need a battery and a place to
put it.  I've got the battery tray so why not order the battery so I can
make sure it all fits together.  That is where I need the help of the
collective.

 

I like the Odyssey 925.  I talked to Scott Swing today and Velocity likes
the Odyssey 925.  So, an Odyssey 925 is what it is going to be!  There are a
variety of 925's.  See http://www.odysseybatteries.com/battery/pc925lmj.htm.
My question is which one is best?  Terminals up or on the side?  Negative
terminal forward or aft?  SAE or M6 bolt terminal? Metal jacket or not?
What kind of hold down is best?  Lots of questions.  I am hoping somebody
who has already gone through this will be able to shed some light on the
battery installation so I don't have to later say, "Well I  should have...."
>:)

 

Any help would be appreciated!  Thanks.

 

Brooke

 

BTW, I am also installing Composite Design's Landing Gear Control (Gold Box)
System.

 

 

 

 

 

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