RE: Scale factor and wind velocity
i think the best thing you can do if you really want to fly on a windy day is move the CG forward. this will allow you fly with a lot more authority. i had a World Models Zen 50 pattern plane with a tower hobbies 75 that would easily slice through heavy winds that ground just about everyone else. it doesn't solve all the problems but does make for much more pleasureable flying in less than pleasant winds.