If you're using a good old 50mah wall wart charger you might want to go to 14 or 15 hours charge. The nicads self-discharge anout 1 or 2% per day, so one day idle won't appreciablly cut your time.

Visit Red Scholefield's site for the definitive scoop on charging. I follow his ideas and charge all mine for 1 hour every day on a 12 outlet powerstrip set to a wall timer; or 15 hours after a day's flying.

[link=http://www.rcbatteryclinic.com/]R/C Battery Clinic (click me)[/link]