Originally Posted by
flyingagin
2 things
Is it ok if the lead outs do not go past the wings. They end right about at the ends of the , maybe a little less once termintated. I can always make another set. I have the cable in a drawer.
Whether the lead outs go past the wings or not isn't an issue - whether they clear the guide with full elevator deflection is the issue. I'm super conservative with "clearances" - I believe in getting all I can get. If I were building this plane I'd be making sure that there's no way the leadouts come closer than 1" to the outside of the guide. I'm assuming your guide will be part of the outside (left) wing strut. With full elevator deflection I'd want the leadout no closer than 1" to that strut.
2nd issue. The lead out terminations at the bell crank are hitting the fuse. Cant move or revers the bc. I can make shorter terminations but they will still hit. I may just make the holes bigger,that is the simplest. That coupled with some sort of guides
Ken
Hokay, got an opportunity here, and you know you've got 2 choices - either of which are good. If your aim is simply "movement and control" you can/will simply make the holes bigger. No problem. Guides wouldn't really be all that necessary, you just CA the edge of the fuse side where the hole is.
HOWEVER, is your aim is to get your movement & control maximized AND keep your appearance as clean as possible, you're going to need to re-design your belcrank so it doesn't hit the sides anymore. It might look something like this:
Forgive the crudity of the drawing - took about 3 minutes using MS Paint, but I think you get the idea. I had to do this same thing many years ago when I was building my Skylarks. The belcranks kept beating up the first rib inside the wings and they'd eventually jam when the slot they were creating got big enough. I just built my own belcranks (thus keeping the near 90 degree elevator deflection that I like with the Skylark) and went with that. Only thing you have to do with a design like this is to make sure you bend the crank up a bit on the "up" side so the rod to the elevators doesn't get hung up on it when you deflect for down elevator.
Of course, you're making the belcrank out of carbon sheet which probably doesn't bend real well, so you'll have to cant the whole mount a few degrees instead, which will give you a "low" leadout and a "high" leadout, but I don't think that's really much of an issue either.
Just some ideas.