RE: Hitec 645
You destroyed that servo because you didnt use a servo saver. What you bolted onto it was an arm linkage, not a servo saver. These servos are tough, but can't withstand a plus 10 pound truck smacking into something. They need that spring in the servo saver to save the gears that you tore up. The correct servo saver can be found in your spare parts bag. It has a "24" on the back of it. [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDLC8&P=ML]This thing has what you are lookin for, the round part that has the teeth on it to go onto your servo.[/link] When you get your new servo in from the bay, make sure you use this part so you dont strip it out again.