Originally Posted by niznai

Juan

The outdrives don't affect much how quickly you can spin up the diff, but the metal gears inside do. The aluminium ones are nice but you need to use the plastic blades with them. If I was running in mod I wouldn't use those on the front diff (if you run one).

Either way, I think Tamiya cheaped out and took too much material off the ends to allow the pin to be inserted. They should have cut only a narrow channel for the pin rather than take off half the outdrive tail which weakened them unnecessarily. Maybe it doesn't make any difference in the big scheme of things, but I'm just sayin'.