I took out my Multimeter and got interesting results...

[Namuna]

First, the reason I pulled out the Multimeter was to find out once and for all if my suspicions had any merit...That the electronics in the ZipZaps sent less juice to the Motor than a Bit.

I found some INTERESTING numbers...

How I tested:
Before testing the cars, I put them on their chargers for one charge cycle (45 seconds). Then using a Digital MultiMeter (DMM)*, I removed the Motor from the chassis and attached the leads from the DMM to the contacts for the Motor.

On the Bit:
With a NiMH battery (1.2v @ 100mAH): Pumps out 1.36v @ 275mA
With the stock NiCad Battery: 1.34v @ 250mA

ZipZaps:
With the stock NiMH battery (1.2v @ 100mAH): pumps out 1.30v @ 77mA & 115mA**

Atomic Zcar:
With a Bit NiCad battery: pumps out 1.33v @ 110mA

Well, looks like my suspicions were right! The ZipZaps (and the Zcar, clone) sends considerably less juice to the Motor vs. a Bit! Definitely something to think about!

Oh, something else worthy of noting (especially for any DIY Chargers out there)...The Bit Charger CRANKS out 1.5volts @ 1.5A (it actually spiked to 2.2A when I first put the leads on, but then quickly dropped to 1.5A where it leveled off) to the car while charging!!!!

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* The DMM has an accuracy rating of +/- 0.3% for the voltage and +/- 0.8% for the current.

** Whether I got a shotty ZipZap or they inherently have faulty electronics...Sometimes I'd get readings in the high 70s, sometimes I'd get readings in the 110-120. With the Bit and Zcar, I got near solid readings, so there's definitely something up with the ZipZap(s).