Moding a Walmart "ride-on"?? (battery powered trucks for little kids)

[Papa]

I am certain my sons Tonka power wheels has dual 540 Mabuchi brushed motors. It receives power from a single 6 volt cell, and it looks like a mechanical speed control. Each wheel is driven and geared individualy.

For experimental puposes, wiring in a second six volt cell in series may give you an inexpensive boost in power. Although, I am uncertain if the Speed control could manage the added voltage.

For Example: The neighbor kid has a Harley Power wheels it has two 6volts and one 540 can. It is faster in speed runs. However, that thing will wheelie from a start at full wood in first gear. My kid has to wear his bike helmet. The other day they roped the two together for a pull off. The Tonka beat the Harley. Of course my kid is about 20 lbs. heavier and was able to put the power to the sidewalk with a little more authority. The other boys wheels just spun.
:L:

I'll take another peak at the both after school today, in the name of science of course.