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-   -   another v3 gone (https://www.rc-monster.com/forum/showthread.php?t=16265)

TexasSP 11.04.2008 11:56 PM

I never said anything about your bullets or the 1515, just your poor wiring. An electrician's hand book is simply a guide for AC electrical type systems, not electronics as is used in our applications. No Electronics Engineer would suggest you wire like you have. You have over 60 possible points of failure in your wiring/battery setup alone. When running this high a load 2 packs is the maximum you really want to parallel.

Why not ask Patrick or one of the castle techs what they think?

emaxxnitro 11.05.2008 12:05 AM

Quote:

Originally Posted by TexasSP (Post 229344)
I never said anything about your bullets or the 1515, just your poor wiring. An electrician's hand book is simply a guide for AC electrical type systems, not electronics as is used in our applications. No Electronics Engineer would suggest you wire like you have. You have over 60 possible points of failure in your wiring/battery setup alone. When running this high a load 2 packs is the maximum you really want to parallel.

Why not ask Patrick or one of the castle techs what they think?

so i need #6? this is the minimum lengths that will fit. where can i get #6 awg wire for rc use? not being sarcastic

emaxxnitro 11.05.2008 12:12 AM

or will this be better http://www.robotmarketplace.com/products/0C-WI8Gr.html
hoov! thers mine
http://i183.photobucket.com/albums/x...n/102_1716.jpg
:lol: hope you did not poke your lipo on your sway bar :(:

plaviblue 11.05.2008 12:16 AM

I still have 2 to put through their paces but I think my motor is dead. Does anyone have a 1521 1y for sale???

BrianG 11.05.2008 12:20 AM

The size wire gauge you use depends on the current draw and the length. If 10 feet of 10GA is good for 50A, 1 foot of the same gauge will be good for higher amperage. Any of those electronics books will tell you that, but probably not as simply. It's about how many ohms of resistance per unit of length. We are dealing with lengths usually under 6" in a typical setup, so that isn't a huge concern.

What I would watch out for is the number of connections you have. Deans are touted as having as much contact resistance as the same length of wire, which is probably true, when brand new. But connectors get dirty and worn over time (Deans, bullets, Powerpoles, whatever) and plugging/unplugging wears on them. The resistance goes up and so does voltage drop and the current capacity goes down. Not to mention all those possible points of failure.

6GA wire with the flexibility of Deans/noodle wire will be hard to come by. I think the biggest I've seen like that is 10GA. If you really think it's a problem, you could always double-up on 12GA on each connection, but it becomes rather clunky and messy.

No, the best/easiest way to handle this would be to use either 12 or 10GA and keep the lengths as short as possible. This might mean you have to rearrange things a little, but it's worth it IMO.

emaxxnitro 11.05.2008 12:26 AM

Quote:

Originally Posted by BrianG (Post 229358)
The size wire gauge you use depends on the current draw and the length. If 10 feet of 10GA is good for 50A, 1 foot of the same gauge will be good for higher amperage. Any of those electronics books will tell you that, but probably not as simply. It's about how many ohms of resistance per unit of length. We are dealing with lengths usually under 6" in a typical setup, so that isn't a huge concern.

What I would watch out for is the number of connections you have. Deans are touted as having as much contact resistance as the same length of wire, which is probably true, when brand new. But connectors get dirty and worn over time (Deans, bullets, Powerpoles, whatever) and plugging/unplugging wears on them. The resistance goes up and so does voltage drop and the current capacity goes down. Not to mention all those possible points of failure.

6GA wire with the flexibility of Deans/noodle wire will be hard to come by. I think the biggest I've seen like that is 10GA. If you really think it's a problem, you could always double-up on 12GA on each connection, but it becomes rather clunky and messy.

No, the best/easiest way to handle this would be to use either 12 or 10GA and keep the lengths as short as possible. This might mean you have to rearrange things a little, but it's worth it IMO.

finaly someone who sees it my way! we will se how it goes

Pdelcast 11.05.2008 06:50 PM

Quote:

Originally Posted by BrianG (Post 229358)
The size wire gauge you use depends on the current draw and the length. If 10 feet of 10GA is good for 50A, 1 foot of the same gauge will be good for higher amperage. Any of those electronics books will tell you that, but probably not as simply. It's about how many ohms of resistance per unit of length. We are dealing with lengths usually under 6" in a typical setup, so that isn't a huge concern.

What I would watch out for is the number of connections you have. Deans are touted as having as much contact resistance as the same length of wire, which is probably true, when brand new. But connectors get dirty and worn over time (Deans, bullets, Powerpoles, whatever) and plugging/unplugging wears on them. The resistance goes up and so does voltage drop and the current capacity goes down. Not to mention all those possible points of failure.

6GA wire with the flexibility of Deans/noodle wire will be hard to come by. I think the biggest I've seen like that is 10GA. If you really think it's a problem, you could always double-up on 12GA on each connection, but it becomes rather clunky and messy.

No, the best/easiest way to handle this would be to use either 12 or 10GA and keep the lengths as short as possible. This might mean you have to rearrange things a little, but it's worth it IMO.

Gotta watch inductance too. That's actually just as bad for an ESC as resistance in the wiring harness.

Long wires BAD. Short wires GOOD. :party:

BrianG 11.05.2008 06:52 PM

Yeah, there is that... :oops:

emaxxnitro 11.05.2008 07:20 PM

ok so as soon as i get my replacement i will try to shead some wire...in about 2weeks

BlackedOutREVO 11.05.2008 07:27 PM

Or get rid of all those crap amps batts away. And just buy some real packs. There will be so many points of that wire job to go wrong. And the car will be a mess.

I just cant see that set up working so well, and have all those wires everywhere would drive me nuts

emaxxnitro 11.05.2008 07:32 PM

cramp amps? i have had no problems with my batterys! i like to see my friends face when i pull off the body to reveal a rat race of wires!

brushlessboy16 11.05.2008 07:43 PM

Or why not just reassemble them into 6s packs to cut down on the extra wire

emaxxnitro 11.05.2008 07:58 PM

Quote:

Originally Posted by brushlessboy16 (Post 229601)
Or why not just reassemble them into 6s packs to cut down on the extra wire

because i run the packs in other cars

Semi Pro 11.05.2008 08:22 PM

Quote:

Originally Posted by hoovhartid (Post 229343)
so your running 6 lipos in one vehicle?
....do you have any pics?

all I picture is this;
http://i87.photobucket.com/albums/k1...m/IMG_1363.jpg

http://i87.photobucket.com/albums/k1...m/IMG_1364.jpg


:lol: just messin with ya! :whistle:

that made my day:lol:

CRTIM 11.05.2008 08:25 PM

I Just Spit Mt. Dew All Over My Lap ...that Was Funny Right There ...thanks


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