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Thought you may be interested in my experiences. I'm late 50's, and although I've flown control line (wassat?) for years, I'm new to radio. I had a small contra-rotating jobby, and once I had mastered it, was absolutely hooked.
After a lot of soul-searching, and some superb advice I got Aerofly Pro Sim for my mac, and a Trex 450 Pro combo with DX7. Built it with no problems, practised on the sim, got help to program the radio (thanks Mitch), and off I went. I was amazed at how twitchy it was, and spent quite a lot of time adjusting the exponential and rates until I could do all the normal hovering stuff... BUT it was still twitchy. After a bit of a mishap trying to master nose-in, I had to change the tail bevel drive gears. Whilst I was at it, I remembered that I read somewhere here about heavier blades giving more stability. I had some spare new 325 Carbon rotor blades (HS1162), and realised they weigh over 60g as opposed to the default blades 40g. Put them on, and it now hovers like it's on rails!... there is of course a downside; having more mass, they also have more gyroscopic couple, and hence turning in the hover, whilst with a very small amount of aileron on for breeze, means the unexpected twist is greater than before. Still, I'm learning to master that.
Incidentally, why is it that I can turn left in the hover perfectly well, but turning right makes my brain hurt, doctor?!
Hope this may help someone else.
N
After a lot of soul-searching, and some superb advice I got Aerofly Pro Sim for my mac, and a Trex 450 Pro combo with DX7. Built it with no problems, practised on the sim, got help to program the radio (thanks Mitch), and off I went. I was amazed at how twitchy it was, and spent quite a lot of time adjusting the exponential and rates until I could do all the normal hovering stuff... BUT it was still twitchy. After a bit of a mishap trying to master nose-in, I had to change the tail bevel drive gears. Whilst I was at it, I remembered that I read somewhere here about heavier blades giving more stability. I had some spare new 325 Carbon rotor blades (HS1162), and realised they weigh over 60g as opposed to the default blades 40g. Put them on, and it now hovers like it's on rails!... there is of course a downside; having more mass, they also have more gyroscopic couple, and hence turning in the hover, whilst with a very small amount of aileron on for breeze, means the unexpected twist is greater than before. Still, I'm learning to master that.
Incidentally, why is it that I can turn left in the hover perfectly well, but turning right makes my brain hurt, doctor?!
Hope this may help someone else.
N
and a platinum star 
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