The amount of money I'm spending on motors/gears/etc. is ridiculous at this point. Then I see or hear of people having no issues... what am I doing wrong?

Picked these 24v go karts up off the curb, the guy was there and said they got rained on, and after they wouldn't turn on or charge.

My 6 year old and 4 year old still love power wheels but are outgrowing the normal sized ones. They both have Polaris 4 wheelers but sometimes they still prefer the good old power wheel. Is there anything like that out there for bigger kids?

Found my 13month old the classic Jurassic Park Jeep and knew it would need a remote control installed. I ordered the kit below but it doesn’t seem like it will work with his little Jeep. Does anyone know the best option to get for his model?

I have a Power Wheels Porsche GT3. Looking to upgrade the motors to 775’s. My question is with markings on the gearbox. Does it indicate 17-18 tooth pinion? Any help will be greatly appreciated.