Okay, Im pretty new to the whole electric scene, and have been seeing a lot about changing the gearing of the spur and pinion. I have a few questions about this:
1. What does this change in regards to speed, control, etc.?
2. How do I do this and is it easy to do?
3. How does it come stock? (3903)
4. What is the best (if there is) set up for just bashing around in the backyard type thing?