...by the way...(anyone) has sugggestions for a friction system? im about to work on the collective, and i need a design that allows me to raise and lower the collective at any given height with out it having it flop down when i let go....plus i really do not want any stress on the pivot point of the collective, so ideally, the friction system will have to be pulled and pushed by the collective handle...but i am opened to any ideas....
I'm not sure what type of design you were going for but here's what I did to mine....
First, I used an extension damper to give it some hydraulic resistence, as I raised it. (I originally thought that was going to be enough to hold it.......not!
It held it somewhat but the handle was still a little too heavy and it would slowly start to fall. So, I added a couple of springs, on the tail end to hold it.
They're not strong enough to lift the arm but strong enough to supplement the damper's holding ability.
Here's an overview I put together awhile back. (Collective Overview)
There are some closeup pics in there that may give you some ideas?
Since that overview was made, I've reduced the length of the arm by 5 inches, created a zippered/velcroed leather boot to cover the guts, and wired it all up.
Also, since these pics were taken I changed the out the cheap red "Shack" pushbutton I had on the faceplate and re-mapped some of the buttons.
(You can see that better, on the pics I posted earlier of the MISC panel.)
Hope that helps!
And nice work BTW!!!