Have purchased 10 of these servos. Using them in a Lanier Stinger Giant scale plane approximately 30 lbs. AUW with DLE 55cc gas engine for power. Handled the job with no problems. Using Lipo battery regulated to 6VDC. Same setup on Aerobeez 30cc Yak 55M with DLE 30 cc Gas engine. I fly them fairly easy. I give the controls to my friend to " wring it out". No failures. No they aren't digitals, but they're getting the job done for me. No more paying twice the price for "name brand" servos for half the torque of these.