hi
i use fubata 3010 with a 6 volt battery give you 90 oz ,i been looking into the tactic servo now being sold by tower hobby under hobbico it looks like and atfer rescearhing it some i think it is made by fubata they are a little more power in each servo line and are cheaper in price the servo arms are junk but the fubata arms fit if your like me you have a lot of fubata arm laying around ,i have a couple that i am going to try them on my second chipmunk on the ailerons and elevoter my frist one is flying now with 3004 and tactic standard have a litte more power we"ll see i still have to cover #2