Futura57
Senior Heliman
Location: UK
| It's a Century 4 bladed head. One of the older designs I think. I bought it with the blades second-hand a couple of years back. You can see it on this link page...
CenturyUK Multi Heads
The head fitted perfectly and bolted on with no issues about the location of the bolt hole or any slop in the fit on the mast.
I am not using any gyros or mixers on the head at all. I have not attempted any 3D, and don't intend to. She only has a slight nose up tendendency in foward flight, which you quickly get used to, and otherwise is very much like a 2 blade flybar head to fly. Very responsive. Also, with 4 blades you need to drop the pitch range right down. The blades are carbon and feel quite heavy, though I haven't weighed them. I have futaba 9206 and 2 x 9202 servos for the swash (all I had spare).
Instead of using a conventional blade follower with a single link, I am using a home made arrangement. I will let the picture tell the story.
I cannot take the credit for this because I got the idea from CopterDoctor a while back. It's a fantastically slop free way of doing things if you ask me. I can't remember what heli the mixer arms are from. The Plywood piece will soon be replaced with a turned metal item. The anti-rotation guide has been tilted back a little to clear the links.
The scale project I refer to is a Eurocopter Tiger which I designed in balsa wood over 2 years back. For various reasons it was put on hold, but now it's on the move again. If you look in my gallery you will see me holding the fuselage almost complete outside my front door. You will also see a wooden framed contraption with bits of Century Hawk mechanics. This was test flown long ago with the raised tail rotor position, which has been faultless. This is incorporated into the balsa fuselage design.
That's about all I can think of to say for now.
My apologies to those who have seen this before.
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Hardware eventually fails - Software eventually works! |
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LOL
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