I'm thinking of putting twin aileron servos in my Goldberg Cub so I can try flaperon mix on landing.

Using two standard-size servos seems like overkill and a lot of weight when the load is split over the two servos. But I've never heard of anyone trusting S3101/Hitec HS-81 mini/micro type servos in gas-powered aileron service, even on a sedate model like a .60-size Cub. Most of the references to mini's are regarding electrics and park flyers.

What's people's experience with servo sizes? Are gas fliers just stuck in a standard-size rut, or are mini servos to weak to drive an gassie's aileron?