JR 4721
Iv'e been using this servo (2) for past year in my planes plus ARF roo I bought @ Superman 00.. 128oz if I remember correctly.
Duall ball bearinged and coreless motor. My roo uses 1/16" up elevons for trim @ most. It is 17lbs dry with AMT Mercury for power... The dual setup is all the safety margin you need....I've seen many of digital servo powered giant scale AND helis, destroyed because the owners were not concious of the rapid discharge curve they impose on battery packs.
IMHO this model is a trainer, K.I.S.S. , the weakest link has got to be the squashed rudder fins. any slop that sets up a high speed ocillation would surely put this model in the ground versus digital servo selection over premiums......02