I find that most modern servos will tolerate a 6.6 LiFe battery just fine. If you don't want to mess with the slightly more complex charging regimen of a LiFe, NiMh batteries are still a viable choice. At six volts the S3152 produces about twice as much torque as the servos that were in common use when the Tiporare was designed. With a pattern plane you aren't banging huge barndoor surfaces around as with a 3-D plane. I'm sure that there is a "perfect" servo for the Tiporare out there somewhere but the short answer is that the S3152 is a way better servo than was available at the time the plane was designed. It would be fine.