connector questions

[tlandauer]

Hi,
I am sorry to visit an old subject ( althought with a twist, I hope). After reading a great deal on this topic, i am convinced now that 5.5mm is the way to go, and much have heen said between the ESC and the motor. We will just say that the batteries have been taken care of. My question is that I have a Leopard 4082 -2200kv in my MG and I am putting a new Seaking 180 in it, I did not have a choice with the kv ( would have prefered a bit lower), anyway, the motor wires are not 10 ga., 12 Ga i think and it came with 4mm plugs. If I were to put 5.5mm I have to cut them because I don't want to desolder them and then having issues with old solder not being compatible with the one i am using. Well, then the wires will be so short that i have to lengthen them on the ESC side since i don't think I can take the wires out from the motor. Anyway you look at it i am making more of a messy situation out of the electrical current path, should I just leave the 4mm plugs alone and not worry about them?

[Steven Vaccaro]

Desolder the 4mm and put 5.5mm. Do not cut the motor wire. It will not be easy to solder those wires.

[tlandauer]

Thanks, Steven, Will try to just do that. I want to know why these motors come with such thin wires. doesn't the maker know how much current is going thru?

[Fluid]

I want to know why these motors come with such thin wires. doesn't the maker know how much current is going thru?

The motor maker has designed these car motors to carry a maximum of between 80 and 120 amps, and the existing wires are "just" able to carry that much current. Using minimum wire sizing keeps the motor's cost down - and so many posters here on OSE have praised the Leopard motors to the moon for their low cost. If you want a better motor you'll have to pay for it. Sorry, but you get what you pay for, and only you can decide how much of a compromise you are willing to accept for "the low cost".

FWWI, ranked in increasing quality and performance: Leopard - Castle/Neu - Neu.



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[tlandauer]

Hi,
Thanks so much for the enlightenment! I was wondering where they could save money, over looked the wire size! Question is for this thin wire what is the benefit to put 5.5mm plug, if the wire could only carry so much current then a big plug would just be like putting adult sized shoes on small children, right? am I crazy or there is some point to this analogy.
I am learn so much from you guys and thanks again!
Tim

[Fluid]

It is well worth using the larger plugs, even on light wire. I even use the 5.5s on the thinner wires sticking out of the Aquacraft and ProBoat "limited" motors. They stay cooler and are not a limiting factor in overall resistance. Even on the thin wire, the cheap 4mm plugs the Chinese use are over-taxed at 80+ amps. I use the 5.5s on everything but my Schulze-controlled boats and my 10S and SAW boats. For those I use 8mms on the battery ends.


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[iamandrew]

im using the hobbyking polymax 5.5 bullets on my 4S turnigy batteries which i think have 10 gauge wire
You get a really good fit with bullets compared to things like deans plugs.

[tlandauer]

Thanks, I now have a better understanding of the issue, appreciate your patience with me.
Tim

[Steven Vaccaro]

The motor maker has designed these car motors to carry a maximum of between 80 and 120 amps, and the existing wires are "just" able to carry that much current. Using minimum wire sizing keeps the motor's cost down - and so many posters here on OSE have praised the Leopard motors to the moon for their low cost. If you want a better motor you'll have to pay for it. Sorry, but you get what you pay for, and only you can decide how much of a compromise you are willing to accept for "the low cost". FWWI, ranked in increasing quality and performance: Leopard - Castle/Neu - Neu. .

. How did you rate the wire at 120 amps Jay? My P mono is pulling an average of 160 without issue.