The 225's are LOUSY servos. I have two of the 225MG's and they center lousy and hold lousy. You would be much better off with a standard futaba 3004, forget the specs the 3004's have more holding power.

Personally, for a strong, light, cheap servo I'd use a Hitec 5475 digital for $35 or the plain old hitec 475 for only $18.

Trust me, the 225's are junk [:'(]