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Negative Battery Cable Connection
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n223rv(at)wolflakeairport
Guest

Posted: Thu Jan 05, 2006 6:40 pm Post subject: Negative Battery Cable Connection



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

GenGrumpy(at)AOL.COM
Guest

Posted: Thu Jan 05, 2006 7:05 pm Post subject: Negative Battery Cable Connection



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

jwt(at)roadmapscoaching.c
Guest

Posted: Thu Jan 05, 2006 8:37 pm Post subject: Negative Battery Cable Connection



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

Tim(at)MyRV10.com
Guest

Posted: Thu Jan 05, 2006 8:56 pm Post subject: Negative Battery Cable Connection



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
Guest

Posted: Fri Jan 06, 2006 6:54 am Post subject: Negative Battery Cable Connection



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

jwt(at)roadmapscoaching.c
Guest

Posted: Fri Jan 06, 2006 7:01 am Post subject: Negative Battery Cable Connection



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

rick.conti(at)boeing.com
Guest

Posted: Fri Jan 06, 2006 7:26 am Post subject: Negative Battery Cable Connection



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

Randy(at)abros.com
Guest

Posted: Fri Jan 06, 2006 9:06 am Post subject: Negative Battery Cable Connection



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

Tim(at)MyRV10.com
Guest

Posted: Fri Jan 06, 2006 9:09 am Post subject: Negative Battery Cable Connection



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:

Tdawson(at)avidyne.com
Guest

Posted: Fri Jan 06, 2006 9:13 am Post subject: Negative Battery Cable Connection



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

jesse(at)itecusa.org
Guest

Posted: Fri Jan 06, 2006 9:20 am Post subject: Negative Battery Cable Connection



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

rvbuilder(at)sausen.net
Guest

Posted: Fri Jan 06, 2006 10:08 am Post subject: Negative Battery Cable Connection



 #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.

Tim(at)MyRV10.com
Guest

Posted: Fri Jan 06, 2006 10:31 am Post subject: Negative Battery Cable Connection



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
Guest

Posted: Fri Jan 06, 2006 11:55 am Post subject: Negative Battery Cable Connection



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

johncleary(at)mangertonns
Guest

Posted: Wed Jan 11, 2006 7:27 am Post subject: Negative Battery Cable Connection



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

rick.conti(at)boeing.com
Guest

Posted: Wed Jan 11, 2006 7:47 am Post subject: Negative Battery Cable Connection



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

johncleary(at)mangertonns
Guest

Posted: Wed Jan 11, 2006 8:13 am Post subject: Negative Battery Cable Connection



Rick,

 

Thank you.

 

Did you mount it on the rear of the panel itself or on something behind the panel?

 

Cheers,

John

Tdawson(at)avidyne.com
Guest

Posted: Wed Jan 11, 2006 8:26 am Post subject: Negative Battery Cable Connection



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

rick.conti(at)boeing.com
Guest

Posted: Wed Jan 11, 2006 8:28 am Post subject: Negative Battery Cable Connection



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

Kellym

Joined: 10 Jan 2006
Posts: 1706
Location: Sun Lakes AZ

Posted: Wed Jan 11, 2006 9:11 am Post subject: Negative Battery Cable Connection



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

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

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