Electrical question

[secrtwpn1]

Would it be acceptable to have a Tamiya connecter on one end of a wire and at the other end a Deans connector?

Thanks for everyones patience!!!!

Farlan

[crueby]

As long as the plugs you are connecting to are those and you are not overloading the current ratings, makes no difference. A number of times I've also made short adapters so I could use same battery in a car and a boat.

[chips]

Radio Control Boat Modeler Magazine (no longer published) had an article in the Summer 2006 issue. The article was titled "Reduce resistance, Increase performance". The author, Frank Breau, compared the standard Tamiya plug, bullet motor plug, Anderson/Sermos Power Pole plug, Dean's Ultra Plug, and 8 inches of 14 gage wire. He attached 14 gage wire to male and female plugs. After the matching plugs were mated, the wires were trimmed so the overall length was 8 inches. He then recorded the resistance with a digital multimeter.

The results were:
8 inches of 14 gage wire - 0.4 Ohm
Dean's Ultra Plug - 0.4 Ohm
Anderson/Sermos - 0.6 Ohm
Bullet motor plug - 0.8 Ohm
Tamiya plug - 1.3 Ohms

It would be interesting to see how some other plugs measure up: EC3 or EC5; Traxxas plug; XT60.

[salmon]

Very Interesting!

[JWLaRue]

I’m not sure that I need to care about fractions of an Ohm for our purposes......? Would be interested to understand why.

-Jeff

[vasily]

Tamiya plugs are widely reviled in fast electric boat and RC car forums. They are rated at 10 amps continuous (and even that is suspect) and overheat and fail if over-stressed. Deans (Ultra) plugs are rated higher. Normal Deans plugs are low current RC signal connectors.
Besides heat failure, an extra ohm of resistance at 12 volts leads to a loss of 12 watts of power in heat and thus battery drain.
If your not worried about current, then either will do. .

[JWLaRue]

Agree....it's a possible issue for high current draw, but based on my experience with R/C subs (both large and small) high current draw isn't an issue.

-Jeff

[aeroengineer1]

Power lost through resistance is R * I^2. It may seem small, but when I am sizing MOSFETs my projects, anything over a few hundred milliohms is not tolerable to me. A 1Ohm resistor with 1A of current leads to 1W of power being lost in heat. If you were to double that current draw to 2A, the power lost goes to 4W. At 10A it is 100W lost to heat. The heat loss is one thing, but the drain on the battery is another.

This is not to say that it is an issue, just providing perspective to what it does, and that it does not take a lot of current to add up to a pretty hefty drain on the battery. One last thought is that to measure small resistances usually takes more than a multimeter to get an accurate value. Here is an example of how to do it. There are other ways to do this as well.