Originally Posted by
yoshgixxer
"400" or "450" size dosnt signify blade length like the "600" or "700" its signifies 600mm blades or 700mm blades (690-710 actually) it means brushless motor size, they can use a 400-450 size motor
And since there is no brushless motor size naming convention standard, I still don't know why they didn't call the blade 400, a 450, since the blade uses what e-flight calls a 420 motor as opposed to what align calls their 430 in the t-rex. E-flight could have just as easily named their motor 426 and rounded up.