I don't think it's really necessary because "the bird fly very well", looks stable and smooth on commands. If you are an experiente RC pilot and bought the suggested system (engine, propeller, battery...) you will not have problems.
After the initial expense for the body, do you think you would have to have replacement parts" on hand" ? Like "bring extra wing and tail parts into the field to insure a successful flight assignment?
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I don't think it's really necessary because "the bird fly very well", looks stable and smooth on commands. If you are an experiente RC pilot and bought the suggested system (engine, propeller, battery...) you will not have problems.
After the initial expense for the body, do you think you would have to have replacement parts" on hand" ? Like "bring extra wing and tail parts into the field to insure a successful flight assignment?