Wiring AA help...
 

So I am trying to wire 2 AA batteries into my Xmod. I am not using ANY of the AAA batteries, just 2 AA batts. So I bought one of those 2 AA battery holders from RatShack and wired the red wire to the red wire on the Xmod and the same with the black. But I turn it on and only can get the steering to work. The motor will not turn. Ive tried several different motors and I know it is not the motor. How am I wiring this wrong?

I have 4 2000mAH RatShack rechargeables right now and am going to see how just 2 of them do. Here is a pic of it wired right now(dont pay attention to all of the dirt and grime!)

whoops :P

Ok I wired up 4 AA batteries and it worked. But I only want 2 AA batts, so how should I wire that?

Heh I wired up the 4 AA batts and took it for a spin using the Red stage 2 motor and was a tad disappointed. I am used to using the white stage 2 motor, but some of the wires came loose and I couldnt find my soldering iron. I have a larger capacitor, but am I supposed to replace the smaller tan capaictor on the motor?

Anyone know why my car feels slower? I havent takend it outside(just ran it around my kitchen) but I couldnt get the tires loose at all. These batts are 2000mAh a piece compared to the 700mAh AAAs I was using.

The reason why its slower is because a AA has the same voltage as a AAA, so all your doing is adding weight.

Makes sense, but would a larger capacitor be able to take advantage of the larger mAh?

The only thing your doing by adding the AA's is increasing the run time. The weight is going to slow you down. The capacitor is for the voltage.

Capacitors are normally used (in this case) to clean up voltage. They insure that voltage to the motor (among other things) remains relatively constant and stable. I believe they also reduce the amount of noise the motor throws back into the system.

I didn't do very well in Microelectronics in school...one of the reasons I went digital instead of analog ;) So I may be completely off-base! :eek:

4 Duracells: 6V=dont need the 6 cell mod!
4 rechargables:4.8V
6 rechargeables:6V/AKA 6 cell mod
6 Duracells: 9V= too much Volts!

so if I put rechargables in my car instead of duracell's
then my car will be slower???

no because rechargeables can put out more current than alkalines so it makes up for the lost voltage by dumping out more current and believe me, once you go rechargeables, you wont' go back to alkalines

That is EXACTLY what I encountered! My car would barely run on carpte, till I got IC3's. now it hauls !!!

how about putting in one 9v batt.?

9v
 

hey i think that 9v is too much voltage

The stock FET(s?) are only good up to 8.4V.

Where'd you hear that?

Here, somewhere.

I think neurokinetik found out that bit of handy dandy news. Hes right though, there was a guy on here with a supra, who hooked up 9V and smoked his circuits.