has anyone put a trex 450 head on their blade 400 and if so is it relatively simple? by simple i mean is the shaft the same diameter, just a straight swap with a bit of shortening maybe, or is it a little more involved. if you have done it what did you do and how much does it improve the old 400
now, please dont start by telling me its not worth upgrading the 400, as its just for a bit of fun. i know the trex is a better heli, but as everyone sells of their 450 fb heads quite cheap these days in the relentles quest for fbl then i thought why not give it a go.
now, please dont start by telling me its not worth upgrading the 400, as its just for a bit of fun. i know the trex is a better heli, but as everyone sells of their 450 fb heads quite cheap these days in the relentles quest for fbl then i thought why not give it a go.

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