[sdcantrell56]

This is one of the reasons why I have gravitated toward 8wd is the redundancy of the chain. Unless 2 chains break on each side of my drivetrain, there will always be at least one center wheel plus its outer wheel powered. Also once again this drivetrain was designed for a game with climbing obstacles. I did not design it to drastically increase traction over a 6wd although I believe the traction would be increased by a very small amount given the use of roughtop. Also I like the use of 8wd because there will be less rock than a 6wd. Finally, treadwear will be reduced. These advantages in my mind outweigh the disadvantage of slightly more complexity and about a 2.5lb weight gain.

If the game is a perfectly flat field than chances are very good that we will go with a 6wd version of this wooden drivetrain.