I have tested many different servos on the T-Rex 250, including JR, Hitec, Align and Futaba. However, I was finally able to test the DS3500G within the past couple of days and I am very impressed. So far, this is my #1 choice for the tail of the 250, nothing comes close to this servo when it comes to holding power, feel and precision. I can do all kinds of pirouetting maneuvers with ease, even 4 point pirouetting loops, tail reversals and more. If I can do it with my 700, I can do it with the 250! I will try to release some video with it again soon.
Here are the specs on this servo:
Type: Digital
Torque: 27 oz/in
Speed: .07 sec/60 degrees
Dimensions (WxLxH): .58 x 1.05 x 1.3 in
Weight: .9 oz
Also, this servo coupled with the Spartan DS-760 gyro provides unbelievable performance for the T-Rex 250. I have added a configuration file as well for the Spartan gyro and this servo. The file can be downloaded here. More help with setting up your Spartan gyro can be found here.
