> Yesterday I went to get new wire for my TAO3-F and they were out of
> the 12 guage wire (Big races coming up, so everything is hard to get)
> all the store had was 14 guage.
Lemme guess. You went to your LHS to get the real nice ultra-flexy
sillicone insulated wire that costs way too much that you're always
running out of?
> My question is this... How is this going to affect my car? I have a
> Midnight 2 Pro and a Cyclone and a good matched set of 2000s.
You'll go slower. Not much, not noticably, but slower.
> I am not very techie, but the salesperson said something about
> increased resistance but less weight. I know the second part is good,
> but what about the first?
Well, more resistance is bad, more weight is bad. Let's just look some of
this stuff up in this here handy pocket refrence.
Your car probably has about 1 foot of positive, and 1 foot of negative
wire (I'm over-estimating, so the difference is even more pronounced). So
12 gague wire would give you a total of 0.00324 ohms of resistance in the
wire alone, and 14 gague wire would give you 0.00516 ohms of resistance in
the wire alone. That's not a whole heck of a lot. Let's say your motor
draws 20 amperes (it'll do that when accelerating) -- that's about 0.1
volt drop through your wires for the 14 gague wire and about 0.05 volt
drop for the 12 gague wire. In short, the 14 gague wire is definately
adequate, but will theoretically cause your car to be slower because of
increased electrical resistance. Now let's look at weight. The 12 gague
wire (without insulation -- that's not in this handbook) will weigh
0.0396 lb for the two feet, and the 14 gague wire will weigh 0.0248 lb for
the two feet. That's 0.6336 oz for the 12 gague wire and 0.3968 oz for
the 14 gague wire.
So using 14 gague wire will get you a net savings of 0.2368 oz. and will
cost you 0.00192 ohms resistance. I don't know which is more significant
(I could try to calculate how much power it takes to accelerate 0.2368 oz.
and compare that with the power difference between the wires) but as you
can see, the difference is very small. Just assume the insulation weighs
about the same as the wire (that's probably close) and you can see that
it's a small difference in weight and a small difference in resistance.
Better yet, you'll psych everyone else there out using such inferior wire,
and they'll be impressed with your vastly superior driving capabilities
necessary to cover up such an extreme deficet.
TTTTT OO M M The sixth sick shiek's sixth sheep's sick. |~~~|
T O O M M M So if it is in or if it is on it is as it is, *
T OO M M be it in or on. `-'