So, my radio had a failed potentiometer and started changing collective whenever it wanted. Pretty scary but luckily, it was only a scare. Had it fixed under warranty and I'm finally back to flying. After my normal pre-flight inspection, I put a few flights in today and decided to give the model a deeper inspection at days end. I found a few things.
First, is it normal to have some up and down movement in the main blade grips? e.g., if I apply upward pressure to the bottom of the blades, the grips move up and fall back down with gravity. It's not the spindle or the dampers moving and there is no in-and-out play. It appears to be the tolerance in the thrust bearings and grips and is pretty equal movement on both. Normal?
Second, Did I put the wrong set screw in the tail hub? I found the pitch link hitting it at full travel. I removed it to recheck it's set correctly. It is. I don't think it was binding but I did back the servo travel off just a few clicks. I originally looked at the gap of the slider and hub when setting travel but found the set screw to be the limiting factor.
Lastly, I think this is just my bearing torque mentality, but I found my washout bearings and belt tensioner bearings a little loose. When I built the model, I didn't really crank those down and just let the loctite do the work. They were tight before the maiden. Anyway, I ended up reassembling those parts and gave the screws my normal torque. I'm sure it won't affect bearing performance as the screws just capture the inner races.
HOWEVER, the outer bearings still move a bit in the washout arms. Anyone else laterally wiggle there and experience movement?
