Originally Posted by screamin' eagle
The little collars are plenty to hold the wing on. I have accidentally flown a few wingerons/pitcherons without the collars (forgot 'em) and there were no incidents, even with high-speed rolls.
As far as servos go, I'd go with at least 50-75 oz in per servo. Doesn't have to be digital although that helps! The cheapest and best way to increase torque is to run a 6 volt battery pack. Helps your servo speed too!