Kevinkal,

There is an even better servo set up for your Pacer. EMAX makes a 5.5 gram digital metal gear servo that weighs only 5.5 grams and makes 18 ounce-inches of torque on 6 volts... way more than enough for your Pacer. I flew a Mach None on three channels and a Tee Dee .051 about 40 years ago using three small Ace servos I built from a kit (larger and heavier than the EMAX). It's performance was absolutely fantastic with rudder allowing snap rolls and knife edge flight. The Pacer and Mach None flight characteristics and performance are practically identical. Definitely worthwhile going 3-channel and adding the rudder. Three servos at 5.5 grams each (16.5 grams) weigh less than two 9 gram servos. These EMAX servos are tiny and will easily fit three servos in the fuselage (Dimensions: 0.79x0.35x0.91 in). At only $10 each, they won't break the bank. Check out the EMAX ES9052MD servo here:
https://www.altitudehobbies.com/coll...-digital-servo