New Ground to Bus
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48538
Printed Date: March-06-2025 at 8:14am
Topic: New Ground to Bus
Posted By: td_in_nc
Subject: New Ground to Bus
Date Posted: April-11-2020 at 9:55pm
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Trying to deal with a some Perfectpass issues and one of the things recommended is a good ground. If a ran a new ground from the bus to the motor with 6 gauge wire would that be acceptable? I saw some post which said run a new ground from bus to battery, but I think running directly from bus to engine ground would be better, am I missing something? Thanks |
Replies:
Posted By: Far north downunder
Date Posted: April-11-2020 at 10:17pm
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Most people are running the new ground to the engine, not sure what is better. If the issue is not fixed you may need to upgrade the positive feed from the engine to the dash. I just upgraded the feeds from the ignition breakers to the key, and ground to the engine and it fixed my PP issues. 6 gauge should be fine, most people are using 8 gauge for the ground upgrade. ------------- 1994 SNOB |
Posted By: KENO
Date Posted: April-12-2020 at 8:19am
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Seems to me that it doesn't make any difference whether you go to the engine or the battery with your new ground wire. One way might use a longer wire than the other One way might be easier to run the wire and attach it. Sounds like a personal preference type of thing. Why do you think it's better going to the engine? |
Posted By: 8122pbrainard
Date Posted: April-12-2020 at 9:55am
Very good question. Is closer to the alternator better or closer to the battery. Cast iron isn't the best conductor of electricity. As a compromise, I'd go to the same spot on the engine block where the negative battery cable is connected. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
KENO wrote:Posted By: KENO
Date Posted: April-12-2020 at 10:28am
I think I answered my own question  Here's a semi long read in the link below that would suggest the block is best And...........the original ground point for the dash is the block when you follow that black wire backwards from the dash. https://www.w8ji.com/negative_lead_to_battery.htm" rel="nofollow - link |
Posted By: td_in_nc
Date Posted: April-12-2020 at 10:49am
| Thanks everyone - I ran it back to block where the ground for the battery was connected - I figured it was less connections to the place the battery grounds, It may be bad logic but it is done now. I will check out the link. |
Posted By: td_in_nc
Date Posted: April-12-2020 at 11:01am
| After reading the article, I now have another question, should I remove the original ground from the busfuse bar, All I did was add in the new ground, now I am wondering if I should have removed the original ground wires which were there, before adding the new ground. |
Posted By: 8122pbrainard
Date Posted: April-12-2020 at 11:25am
Tom, You are fine as is. The extra wire doesn't create a ground loop. (see the article). In wiring, it's very common to run multiple conductors when amps are high and it's not feasible to run one large conductor. Many times it's even easier to run multiple. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: td_in_nc
Date Posted: April-12-2020 at 11:28am
| Thanks Pete - You nailed my concern about the ground loop. |
Posted By: tryathlete
Date Posted: April-12-2020 at 1:13pm
| And I thought a ground loop was bad tail dragger landing! |
Posted By: Jonny Quest
Date Posted: April-12-2020 at 1:33pm
A ground loop on landing is an ugly thing! ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: td_in_nc
Date Posted: April-12-2020 at 5:43pm
| Okay I looked it up and I cannot find out what ground loop means related to skiing. Someone has to explain.... |
Posted By: tryathlete
Date Posted: April-12-2020 at 5:58pm
In case of sarcasm, my apologies. A ground loop as it relates to flying a plane is essentially wipe out when you swap ends with a tail wheel airplane when landing. It can be a minor embarrassment all the way to a nasty crash. I flew a Turbo Beaver floatplane that subsequently (a few years later) was water-looped but fortunately the engine did not ingest water. It was much cheaper to repair as a result. That was a very cool plane. It still is. |