[brodieb666]

I have two, 6v, single motor, single gb ride-ons that I was thinking of adding a second battery and a turbo boost switch to.
One is a PW Lightning Mcqueen with the gearbox in the center of the rear axle, powering both wheels.
The second is a black quad (make and model unknown), with the gearbox attached to the right side wheel.

I've seen other posts were people were advised not to make a single motor vehicle 12v, but if the 12v is only active via a turbo switch, the wear on the gearbox should be greatly reduced, right?
Thoughts? Anything I'm overlooking?

[Suburbancharlie77]

Would be better served adding a motor/gearbox!
That one wheel will most likely spin.

[taz11]

The two wheel drive one.....just add the battery. The other one, I would recommend another gearbox, they tend to torque to one side with only one.

[brodieb666]

Looking at the quad, it looks like adding a second ghat and motor would require a lot of cutting. I wonder if it would still have structural integrity. This is the quad:

has anyone done something similar?

Would the non- driven wheel have the part necessary to attach the gearboc to?

[Suburbancharlie77]

No clue what that is, so without some info, that's going to be a "your on your own".
With details, could check for a direct fit gearbox.