deans vs. traxxas
#77
Not to add fuel to the flames, but seriously, let's do some calculation in a modern RC system (Circa 2008/2009 not 1985).
Suppose you are running a low-end LiPo that have capability of 15C continuous, where C is a conservative 3000mAH
P = V * I = I^2 * R = (3*15)^2 * 0.00012 = 0.243W
So in this really conservative system, the connection point, which is insulated, is trying to dissipate nearly a quarter watt.
Let's take an extreme example, let's say you have a fairly decent pack, something rated at 20C continuous, where C is 5000mAH this time.
P = 1.2W
Remember that you are trying to dissipate 1.2W in a tiny little area with insulation. The connector will eventually get warm.
Well, suppose the Tamiya connectors was a magnitude worse (in which most cases is true compared to the high end stuff like Traxxas and Deans). 0.0012 Ohms instead of 0.00012.
You just bumped up the 1.2W Traxxas connection by a factor of 10 and you get 12.0W. That's quite a bit of power! Your connector will definitely burn up.
While I agree with you Trix that 0.00012 seems small, in modern RC systems, there is an INSANE amount of current being pulled, especially when these hot LiPos are being mated with a hot Brushless system.
Also, all wires are fuses, it can only carry so much power across it before it breaks down and pops... You want to be as far away from that condition as possible, far away on the other side of the extreme.
This is just a case-study of the connector with a PERFECT connection (first time connect). From then on, the performance will degrade due to oxidation and degraded mating due to mechanical stress of mating and unmating after a zillion times. You would want something that's as far over to the curve as possible, even if it sounds extreme because that 0.00012 rating is when it's brand new and connected once on some test bench somewhere...
Also, soldering is NOT "zero resistance." The resistance of solder is measurable...
Suppose you are running a low-end LiPo that have capability of 15C continuous, where C is a conservative 3000mAH
P = V * I = I^2 * R = (3*15)^2 * 0.00012 = 0.243W
So in this really conservative system, the connection point, which is insulated, is trying to dissipate nearly a quarter watt.
Let's take an extreme example, let's say you have a fairly decent pack, something rated at 20C continuous, where C is 5000mAH this time.
P = 1.2W
Remember that you are trying to dissipate 1.2W in a tiny little area with insulation. The connector will eventually get warm.
Well, suppose the Tamiya connectors was a magnitude worse (in which most cases is true compared to the high end stuff like Traxxas and Deans). 0.0012 Ohms instead of 0.00012.
You just bumped up the 1.2W Traxxas connection by a factor of 10 and you get 12.0W. That's quite a bit of power! Your connector will definitely burn up.
While I agree with you Trix that 0.00012 seems small, in modern RC systems, there is an INSANE amount of current being pulled, especially when these hot LiPos are being mated with a hot Brushless system.
Also, all wires are fuses, it can only carry so much power across it before it breaks down and pops... You want to be as far away from that condition as possible, far away on the other side of the extreme.
This is just a case-study of the connector with a PERFECT connection (first time connect). From then on, the performance will degrade due to oxidation and degraded mating due to mechanical stress of mating and unmating after a zillion times. You would want something that's as far over to the curve as possible, even if it sounds extreme because that 0.00012 rating is when it's brand new and connected once on some test bench somewhere...
Also, soldering is NOT "zero resistance." The resistance of solder is measurable...
#79
Tech Adept
iTrader: (5)
Joined: Nov 2008
Posts: 104
Personally find nothing wrong with deans... For anything more than stock brushed I understand hard wiring/soldering the motor, but the battery would just be a pain...
#80
I used to do that about 15 years when I used to race oval. I fried a cheapo Futaba ESC when I wired it backwards. To make it worse, the Futaba ESC didn't even come with a on/off switch, those were usually found on racing-grade ESCs at the time like from Novak and Tekins!
But to get back on topic, depending on the size constraint, I really like the Traxxas plugs due to the grips, however, you can make some grips into the deans by taking a dremel and cutting some ribs into it, not deep enough to expose the contacts, but just enough to get a grip on it.
#81
Suspended
Joined: Dec 2008
Posts: 728
From: Houston, Texas

Which Deans Plugs are you talking about, the old 4-pole model that we started using 20 years ago?

Since then Deans new ULTRA plugs have changed significantly - and if you can get one of the new ones to plug in backwards.... LOL
#82
So are you a "pro" or just a pretend/wanna-be pro? 
Which Deans Plugs are you talking about, the old 4-pole model that we started using 20 years ago?
Since then Deans new ULTRA plugs have changed significantly - and if you can get one of the new ones to plug in backwards.... LOL

Which Deans Plugs are you talking about, the old 4-pole model that we started using 20 years ago?

Since then Deans new ULTRA plugs have changed significantly - and if you can get one of the new ones to plug in backwards.... LOL

Started running pan cars in 1988 quit in 1999, the guys I ran with around Tenn, Ky, Va, Ga, Nc, Sc and Fla. if you wanted to be in the hunt 2 things you done, got the wires as short as you could, and hard wired, but then there was no break out classes, you ran for 4 min. and got what you could, but this year at the Oval masters and last years Snow birds most of the top guys still hard wired
#83
Suspended
Joined: Dec 2008
Posts: 728
From: Houston, Texas
Pro , depends on what you think a pro is, deans didnt come out 20 years ago more like 17 or 18.
Started running pan cars in 1988 quit in 1999, the guys I ran with around Tenn, Ky, Va, Ga, Nc, Sc and Fla. if you wanted to be in the hunt 2 things you done, got the wires as short as you could, and hard wired, but then there was no break out classes, you ran for 4 min. and got what you could, but this year at the Oval masters and last years Snow birds most of the top guys still hard wired
Started running pan cars in 1988 quit in 1999, the guys I ran with around Tenn, Ky, Va, Ga, Nc, Sc and Fla. if you wanted to be in the hunt 2 things you done, got the wires as short as you could, and hard wired, but then there was no break out classes, you ran for 4 min. and got what you could, but this year at the Oval masters and last years Snow birds most of the top guys still hard wired
but we had Deans Plugs in Florida at least by the time I started running seriously in 1986but we're not talking about the top guys at the Snowbirds, something like 95-99% or RCers don't race and have a better chance of going to the moon than becoming a top-rated racer or making the A at the Oval Masters or worry about the miniscule difference between hard-wiring or using Dean's Plugs.
#84
don't know how far in the back woods you are
but we had Deans Plugs in Florida at least by the time I started running seriously in 1986
but we're not talking about the top guys at the Snowbirds, something like 95-99% or RCers don't race and have a better chance of going to the moon than becoming a top-rated racer or making the A at the Oval Masters or worry about the miniscule difference between hard-wiring or using Dean's Plugs.
but we had Deans Plugs in Florida at least by the time I started running seriously in 1986but we're not talking about the top guys at the Snowbirds, something like 95-99% or RCers don't race and have a better chance of going to the moon than becoming a top-rated racer or making the A at the Oval Masters or worry about the miniscule difference between hard-wiring or using Dean's Plugs.
Not back in the woods, started racing in Knoxville Tenn. raced with a man you may know, Buddy Wolfe
#85
for those who are interested in the traxxas connectors you can find them here
http://www.promatchracing.com/products.php?cat=15&pg=2
http://www.promatchracing.com/products.php?cat=15&pg=2




