Lotus Elan

battery cable

PostPost by: rdssdi » Sun Sep 03, 2006 6:55 pm

I thought 2/0 would be safe as the long run from the solenoid to the rear
mounted battery.

What was the gauge of the original battery cable?

Bob
1969 Elan +2
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PostPost by: dougweall » Sun Sep 03, 2006 8:29 pm

Guys,

I knew I would put the cat among the pigeons by replying to this thread, but I will try and explain myself a bit more.
Martin suggests that my engine earth path is virtually none existant. Well imagine my earth strap instead of engine to chassis is engine (starter motor bolt) to battery.
The wire back to the battery is the same size as the power supply you all have to the starter motor.
I do not have a solenoid due to the self contained Brise starter motor, the wiring to the solenoid has been extended down to the starter.
Even if I did have a solenoid the engine to battery wire would still work. All I am saying is that I am not using the chassis as you all do for a conventional earth path.
Bob I do not have the size of wire to hand, but I will try and find out.

Doug.

Message Received: Sep 03 2006, 07:56 PM
From: ***@***.***
To: ***@***.***
Cc:
Subject: Re: [LotusElan.net] battery cable

I thought 2/0 would be safe as the long run from the solenoid to the rear
mounted battery.

What was the gauge of the original battery cable?

Bob
1969 Elan +2





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PostPost by: "C.D.S." » Sun Sep 03, 2006 8:33 pm

Hello Bob,

Im using a 1 gauge cable for the solenoid to the battery. I couldn't
fit anything else into the grommet through the firewall. I used a
marine spec wire, that had an inner sleeve in it to make it more
flexible.

The car came with a 4 gauge battery cable, but who knows if it came
from the factory in this way.

I have a hex battery crimper. I asked your location as I live in Los
Angeles.

Here is a good link on soldering battery terminals;

<<http://www.aeroelectric.com/articles/big_term.pdf>>

Here is a link for car stereo ref. but the info on length vs. gauge
is good;

<<http://www.crutchfieldadvisor.com/ISEO-rgbtcspd/learningcenter/car/
cable_gauge_chart.html>>


Regards


Carl











On Sep 3, 18 Heisei, at 11:52 AM, ***@***.***e:

I thought 2/0 would be safe as the long run from the solenoid to
the rear
mounted battery.

What was the gauge of the original battery cable?

Bob
1969 Elan +2





"C.D.S."
 

PostPost by: M100 » Sun Sep 03, 2006 9:12 pm

On Sun, 3 Sep 2006 22:24:25 +0200 (CEST), ***@***.***
wrote:

I knew I would put the cat among the pigeons by replying to this thread, but I will try and explain myself a bit more.
Martin suggests that my engine earth path is virtually none existant. Well imagine my earth strap instead of engine to chassis is engine (starter motor bolt) to battery.
The wire back to the battery is the same size as the power supply you all have to the starter motor.

Ahh *that* arrangement is alright. It does add weight though. :)

--
Martin
72/45


--
Martin
72 Sprint DHC
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PostPost by: "Andres B. Sta. Mari » Mon Sep 04, 2006 2:03 am

Pegasus will cut and fit terminals on cables for you. You just have to give them the measurements you need. They can fit rubber covers on the ends also and use red cables (if you wish) for the positive leads.
"Andres B. Sta. Mari
 

PostPost by: dougweall » Mon Sep 04, 2006 6:44 am

I have gone on a strict diet to compensate.
Doug.





Message Received: Sep 03 2006, 10:12 PM
From: "Martin Evans"
To: ***@***.***
Cc:
Subject: Re: [LotusElan.net] battery cable

> On Sun, 3 Sep 2006 22:24:25 +0200 (CEST), ***@***.***
wrote:

>I knew I would put the cat among the pigeons by replying to this thread, but I will try and explain myself a bit more.
>Martin suggests that my engine earth path is virtually none existant. Well imagine my earth strap instead of engine to chassis is engine (starter motor bolt) to battery.
>The wire back to the battery is the same size as the power supply you all have to the starter motor.

Ahh *that* arrangement is alright. It does add weight though. :)

--
Martin
72/45

--

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PostPost by: Rob_LaMoreaux » Mon Sep 04, 2006 1:53 pm

I used a 4 gauge (5.2mm/135Amp) wire from the star ground in the bottom of
the boot to the engine block, as well as the hot wire to the starter
solenoid.

The 10 gauge (2.5mm/15-55amp) daisy chain ground to all the chassis is fine,
but it would be better to run one 10 gauge wire for each of the chassis
ground points. Since then a surge on one system will not effect another
system and your headlights won't dim as mush when the wipers or windows go.

The 00 gauge (9.25mm) wire proposed for the block to battery ground is much
more then adequate, since in this application it would be rated at 283 Amp
which is much more than the starter will draw.

I ran the main power feed through the original path down the left side of
the car and the engine block to battery ground wire down the right side of
the car and bolted it to the block. The 10 Gauge ground wires I ran with the
original harness path. I had to replace all of the ground wires in the
bottom of the boot since they were rather oxidized and there was no way the
would provide a good ground. I then coated the boot star ground with
dielectric grease to prevent water intrusion and new corrosion.

6 years later I have not had any ground related problems and the only power
related problems I have had were a pulled out bullet connector due to poor
harness routing on my part and carbon buildup on the regulator contacts. The
new engine has an alternator so the regulator issue should be gone.


Rob LaMoreaux
Ann Arbor, MI USA
(734)-971-5583
Cell (734)-604-9280
Email: ***@***.***
Too many Hobbies.... Too Little Time
1969 Lotus Elan....It's not a restoration, it's a never-ending adventure.
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