SparX (FRC #1126) have used three and four speed automatic shifting transmissions in previous years with great success. We found that, with the right programming, they automation can be highly successful and give the drive team one less thing to worry about. See the links below for details:
2005: Three Speed Automatic
Robot /
Transmission
2006: Three Speed Automatic
Robot Video / Transmission Similar to 2005
2007: Four Speed Automatic
Robot /
Transmission