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Negative Battery Cable Connection
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n223rv(at)wolflakeairport
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PostPosted: Thu Jan 05, 2006 6:40 pm    Post subject: Negative Battery Cable Connection Reply with quote


Where is everyone connecting the negative battery cable on the -10? I thought about running it up to one of the bolts that bolt the front longeron to the rear longeron just aft of the baggage area.  I was hoping to attach it to a longeron that runs to the firewall like in the Harmon Rocket, but there is not one that runs that far do to the door cut outs on each side.
 
Thanks
-Mike


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GenGrumpy(at)AOL.COM
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PostPosted: Thu Jan 05, 2006 7:05 pm    Post subject: Negative Battery Cable Connection Reply with quote


I'm running #2 cable from battery to engine and will also connect ground at battery to frame behind baggage compartment.
 
Suggested by my panel builder.
 
Grumpy
#40404
engine en route and waiting on panel


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jwt(at)roadmapscoaching.c
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PostPosted: Thu Jan 05, 2006 8:37 pm    Post subject: Negative Battery Cable Connection Reply with quote


I am also running #2 to the firewall and engine.
 


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Tim(at)MyRV10.com
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PostPosted: Thu Jan 05, 2006 8:56 pm    Post subject: Negative Battery Cable Connection Reply with quote


I ran #2 from battery to firewall, then through a 48 tab ground
block from B & C, then from the opposite side of the firewall
to the engine using B&C's heaviest braid wire.
Tim Olson -- RV-10 #40170
Current section: Panel Wiring
DO NOT ARCHIVE
Mike Kraus wrote:
Quote:
Where is everyone connecting the negative battery cable on the -10? I
thought about running it up to one of the bolts that bolt the front
longeron to the rear longeron just aft of the baggage area. I was
hoping to attach it to a longeron that runs to the firewall like in the
Harmon Rocket, but there is not one that runs that far do to the door
cut outs on each side.

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bob.condrey(at)baesystems
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PostPosted: Fri Jan 06, 2006 6:54 am    Post subject: Negative Battery Cable Connection Reply with quote


I also used the AeroElectric scheme: a #2 wire from the battery to a firewall mounted ground tab block and brass bolt, then heavy braid to the engine crankcase ground.
 
Bob #40105
 


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jwt(at)roadmapscoaching.c
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PostPosted: Fri Jan 06, 2006 7:01 am    Post subject: Negative Battery Cable Connection Reply with quote


Tim,
Where exactly did you place your ground block? Did you put one on the
firewall side as well? What did you use for the penetration of the #2
battery wire through the firewall? Did you run this through the location
Vans recommends in there wiring instructions?
I know, a lot of questions - but that's what you get when you are the sage.
John Testement
jwt(at)roadmapscoaching.com
40321
Working on QB fuse


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rick.conti(at)boeing.com
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PostPosted: Fri Jan 06, 2006 7:26 am    Post subject: Negative Battery Cable Connection Reply with quote


I decided not to use the airframe as a return.  Since all parts are primed and the riveted “connection” is a painted surface to an unpainted surface, electrically, it’s not a good connection.  I bought the power board from Blue Mountain and both battery cables run forward to the board.
 
Thank You
Rick Conti
office: 703-414-6141
   cell: 571-215-6134


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Randy(at)abros.com
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PostPosted: Fri Jan 06, 2006 9:06 am    Post subject: Negative Battery Cable Connection Reply with quote


I am a rebel. I ran #4 positive to the starter and #4 ground to the
mounting bolt for the battery box. Seems to work fine. Randy


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Tim(at)MyRV10.com
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PostPosted: Fri Jan 06, 2006 9:09 am    Post subject: Negative Battery Cable Connection Reply with quote


I put mine on the inside of the firewall, in that
small upper curved-top cubby area on the slanted part
of the firewall, on the pilots side. It fit good there
and was wasted space otherwise. I would have centered it more,
but I have my lightspeed box in the center area, and my
WSI weather in the other center area on the Right.
I did not place any ground tabs on the engine side. There's
really almost nothing there to ground with fast-ons.
I ran the #2 positive wire just the way van's recommended.
I know, the snap bushings are cheesy, and should be improved
on. But it is what it is.
Tim Olson -- RV-10 #40170
John Testement wrote:


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Tdawson(at)avidyne.com
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PostPosted: Fri Jan 06, 2006 9:13 am    Post subject: Negative Battery Cable Connection Reply with quote


Glad to hear it, Randy, since that's what we're doing, albeit with a #2
wire . . .
Reminder that "Aero-Electric" seems to have been written with a
composite mindset in a lot of cases . . .
TDT
40025
Do not archive


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jesse(at)itecusa.org
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PostPosted: Fri Jan 06, 2006 9:20 am    Post subject: Negative Battery Cable Connection Reply with quote


We did the same routing. We used Van's harness, so whatever wire came with
that is what we used.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
Fax: 815-377-3694


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rvbuilder(at)sausen.net
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PostPosted: Fri Jan 06, 2006 10:08 am    Post subject: Negative Battery Cable Connection Reply with quote


 #4 would probably be fine unless you spend a lot of time in the frozen tundra.  Might be pushing it then.  I, as Tim did, will be putting in #2 for that exact reason.  It gets mighty cold in WI from time to time.  If I never left the warmer climates I wouldn't bother.


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Tim(at)MyRV10.com
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PostPosted: Fri Jan 06, 2006 10:31 am    Post subject: Negative Battery Cable Connection Reply with quote


That's exactly my reasoning too. Up here when it's only zero degrees
out, you need all the help you can get. The difference between #2 and
#4 in weight isn't significant enough for me to want to bother. I
can see why #4 is a motivator for some though.
As for the grounding through the airframe, that's just fine, but,
one major help in eliminating electrical gremlins is to use a
single point ground and eliminate ground loops. Although
success might be plenty possible without running a ground
all the way to the firewall, about the LAST thing I ever would
want to do is try to run a #2 ground up to the firewall
AFTER I built the plane, if I found problems with my EFIS,
AHRS, Radios, and stuff like that. I'd kick my own butt
so hard for not doing it up front. So that's why. I
just want to take all precautions for the most reliable
system I can..even if it does weigh 6 lbs more. (or whatever)
Re-wiring a plane is much harder than doing it the first time.
BTW: I'm also taking extra care building my harnesses for some
items.
Tim Olson -- RV-10 #40170
DO NOT ARCHIVE
RV Builder (Michael Sausen) wrote:
Quote:
#4 would probably be fine unless you spend a lot of time in the frozen
tundra. Might be pushing it then. I, as Tim did, will be putting in #2
for that exact reason. It gets mighty cold in WI from time to time. If
I never left the warmer climates I wouldn't bother.

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Randy(at)abros.com
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PostPosted: Fri Jan 06, 2006 11:55 am    Post subject: Negative Battery Cable Connection Reply with quote


Well that is it! No way am I going to come and see you when it is ZERO
DEG. I don't want you guy's out there hand propping me when it is that
cold. Randy


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johncleary(at)mangertonns
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PostPosted: Wed Jan 11, 2006 7:27 am    Post subject: Negative Battery Cable Connection Reply with quote


Rick,
 
I am interested in using this board also. Where did you decide to mount it? Do you have any photos? Are you able to share your wiring diagram? What voltage system did you go for?
 
Thank you,
John Cleary
 
 


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rick.conti(at)boeing.com
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PostPosted: Wed Jan 11, 2006 7:47 am    Post subject: Negative Battery Cable Connection Reply with quote


The board is mounted on a wood base w/stand-offs on the right side of the panel.  Sorry, no photos.  I am using a 24v system.  The board is the newer version.
 
If you order CH Products control grips, you will NOT need the model with the relays in the control grip.  The relays are available on the power board.
 
Thank You
Rick Conti
office: 703-414-6141
   cell: 571-215-6134


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johncleary(at)mangertonns
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PostPosted: Wed Jan 11, 2006 8:13 am    Post subject: Negative Battery Cable Connection Reply with quote


Rick,
 
Thank you.
 
Did you mount it on the rear of the panel itself or on something behind the panel?
 
Cheers,
John
 


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Tdawson(at)avidyne.com
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PostPosted: Wed Jan 11, 2006 8:26 am    Post subject: Negative Battery Cable Connection Reply with quote


YES!!  At least one other person using 24 volts!  Hooray for us!
 
Like others, we have two Odyssey batteries, but they are wired in series . . .
 
(Plus two little ones up front that are also in series . . .)
 
TDT
40025
 


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rick.conti(at)boeing.com
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PostPosted: Wed Jan 11, 2006 8:28 am    Post subject: Negative Battery Cable Connection Reply with quote


It’s mounted on a thin sheet of wood and the wood is mounted on stand-offs on the sub-panel.
 
Jeremy – do you have photos the power board mounting?
 
Thank You
Rick Conti
office: 703-414-6141
   cell: 571-215-6134


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Kellym



Joined: 10 Jan 2006
Posts: 1700
Location: Sun Lakes AZ

PostPosted: Wed Jan 11, 2006 9:11 am    Post subject: Negative Battery Cable Connection Reply with quote


I'm curious what the perceived benefits of 24volts are. On a small plane,
I don't see a significant wt. advantage. Most 24V accessories I perceive
to be more expensive..maybe I'm wrong. Just trying to understand why I
should consider 24V.
Tim Dawson-Townsend said:
Quote:
YES!! At least one other person using 24 volts! Hooray for us!
Like others, we have two Odyssey batteries, but they are wired in series
. . .
(Plus two little ones up front that are also in series . . .)
TDT
40025


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